| A00 | Amar Opening | | | | |
| A00 | Amar Opening | Paris Gambit | | | |
| A00 | Amar Opening | Paris Gambit | Gent Gambit | | |
| A00 | Amsterdam Attack | | | | |
| A00 | Anderssen's Opening | | | | |
| A00 | Anderssen's Opening | Polish Gambit | | | |
| A00 | Barnes Opening | | | | |
| A00 | Barnes Opening | Fool's Mate | | | |
| A00 | Barnes Opening | Gedult Gambit | | | |
| A00 | Barnes Opening | Gedult Gambit | | | |
| A00 | Barnes Opening | Hammerschlag | | | |
| A00 | Clemenz Opening | | | | |
| A00 | Clemenz Opening | Spike Lee Gambit | | | |
| A00 | Creepy Crawly Formation | Classical Defense | | | |
| A00 | Formation | Hippopotamus Attack | | | |
| A00 | Formation | Shy Attack | | | |
| A00 | Global Opening | | | | |
| A00 | Grob Opening | | | | |
| A00 | Grob Opening | Alessi Gambit | | | |
| A00 | Grob Opening | Double Grob | | | |
| A00 | Grob Opening | Double Grob | Coca-Cola Gambit | | |
| A00 | Grob Opening | Grob Gambit | | | |
| A00 | Grob Opening | Grob Gambit Declined | | | |
| A00 | Grob Opening | Grob Gambit | Basman Gambit | | |
| A00 | Grob Opening | Grob Gambit | Fritz Gambit | | |
| A00 | Grob Opening | Grob Gambit | Fritz Gambit | Romford Countergambit | |
| A00 | Grob Opening | Grob Gambit | Keres Gambit | | |
| A00 | Grob Opening | Grob Gambit | Richter-Grob Gambit | | |
| A00 | Grob Opening | Keene Defense | | | |
| A00 | Grob Opening | Keene Defense | Main Line | | |
| A00 | Grob Opening | London Defense | | | |
| A00 | Grob Opening | Romford Countergambit | | | |
| A00 | Grob Opening | Spike Attack | | | |
| A00 | Grob Opening | Spike | Hurst Attack | | |
| A00 | Grob Opening | Zilbermints Gambit | | | |
| A00 | Grob Opening | Zilbermints Gambit | Schiller Defense | | |
| A00 | Grob Opening | Zilbermints Gambit | Zilbermints-Hartlaub Gambit | | |
| A00 | Hungarian Opening | | | | |
| A00 | Hungarian Opening | Asten Gambit | | | |
| A00 | Hungarian Opening | Burk Gambit | | | |
| A00 | Hungarian Opening | Bücker Gambit | | | |
| A00 | Hungarian Opening | Catalan Formation | | | |
| A00 | Hungarian Opening | Dutch Defense | | | |
| A00 | Hungarian Opening | Indian Defense | | | |
| A00 | Hungarian Opening | Myers Defense | | | |
| A00 | Hungarian Opening | Pachman Gambit | | | |
| A00 | Hungarian Opening | Paris Gambit | | | |
| A00 | Hungarian Opening | Reversed Alekhine | | | |
| A00 | Hungarian Opening | Reversed Brooklyn Defense | Brooklyn Benko Gambit | | |
| A00 | Hungarian Opening | Reversed Modern Defense | | | |
| A00 | Hungarian Opening | Reversed Norwegian Defense | | | |
| A00 | Hungarian Opening | Sicilian Invitation | | | |
| A00 | Hungarian Opening | Slav Formation | | | |
| A00 | Hungarian Opening | Symmetrical Variation | | | |
| A00 | Hungarian Opening | Van Kuijk Gambit | | | |
| A00 | Hungarian Opening | Winterberg Gambit | | | |
| A00 | Kádas Opening | | | | |
| A00 | Kádas Opening | Beginner's Trap | | | |
| A00 | Kádas Opening | Koola-Koola Variation | | | |
| A00 | Kádas Opening | Kádas Gambit | | | |
| A00 | Kádas Opening | Kádas Gambit | | | |
| A00 | Kádas Opening | Kádas Gambit | | | |
| A00 | Kádas Opening | Myers Variation | | | |
| A00 | Kádas Opening | Schneider Gambit | | | |
| A00 | Kádas Opening | Steinbok Gambit | | | |
| A00 | Lasker Simul Special | | | | |
| A00 | Mieses Opening | | | | |
| A00 | Mieses Opening | Myers Spike Attack | | | |
| A00 | Mieses Opening | Reversed Rat | | | |
| A00 | Mieses Opening | Venezolana Variation | | | |
| A00 | Polish Opening | | | | |
| A00 | Polish Opening | Baltic Defense | | | |
| A00 | Polish Opening | Birmingham Gambit | | | |
| A00 | Polish Opening | Bugayev Advance Variation | | | |
| A00 | Polish Opening | Bugayev Attack | | | |
| A00 | Polish Opening | Czech Defense | | | |
| A00 | Polish Opening | Dutch Defense | | | |
| A00 | Polish Opening | German Defense | | | |
| A00 | Polish Opening | Grigorian Variation | | | |
| A00 | Polish Opening | Karniewski Variation | | | |
| A00 | Polish Opening | King's Indian Variation | | | |
| A00 | Polish Opening | King's Indian Variation | Schiffler Attack | | |
| A00 | Polish Opening | King's Indian Variation | Sokolsky Attack | | |
| A00 | Polish Opening | Myers Variation | | | |
| A00 | Polish Opening | Outflank Variation | | | |
| A00 | Polish Opening | Queen's Indian Variation | | | |
| A00 | Polish Opening | Queenside Defense | | | |
| A00 | Polish Opening | Rooks Swap Line | | | |
| A00 | Polish Opening | Schiffler-Sokolsky Variation | | | |
| A00 | Polish Opening | Schuehler Gambit | | | |
| A00 | Polish Opening | Symmetrical Variation | | | |
| A00 | Polish Opening | Tartakower Gambit | | | |
| A00 | Polish Opening | Wolferts Gambit | | | |
| A00 | Saragossa Opening | | | | |
| A00 | Sodium Attack | | | | |
| A00 | Sodium Attack | Celadon Variation | | | |
| A00 | Sodium Attack | Chenoboskion Variation | | | |
| A00 | Sodium Attack | Durkin Gambit | | | |
| A00 | Valencia Opening | | | | |
| A00 | Van Geet Opening | | | | |
| A00 | Van Geet Opening | Battambang Variation | | | |
| A00 | Van Geet Opening | Billockus-Johansen Gambit | | | |
| A00 | Van Geet Opening | Damhaug Gambit | | | |
| A00 | Van Geet Opening | Dougherty Gambit | | | |
| A00 | Van Geet Opening | Dunst-Perrenet Gambit | | | |
| A00 | Van Geet Opening | Düsseldorf Gambit | | | |
| A00 | Van Geet Opening | Gladbacher Gambit | | | |
| A00 | Van Geet Opening | Hector Gambit | | | |
| A00 | Van Geet Opening | Hergert Gambit | | | |
| A00 | Van Geet Opening | Hulsemann Gambit | | | |
| A00 | Van Geet Opening | Jendrossek Gambit | | | |
| A00 | Van Geet Opening | Kluever Gambit | | | |
| A00 | Van Geet Opening | Laroche Gambit | | | |
| A00 | Van Geet Opening | Liebig Gambit | | | |
| A00 | Van Geet Opening | Melleby Gambit | | | |
| A00 | Van Geet Opening | Myers Attack | | | |
| A00 | Van Geet Opening | Napoleon Attack | | | |
| A00 | Van Geet Opening | Novosibirsk Variation | | | |
| A00 | Van Geet Opening | Nowokunski Gambit | | | |
| A00 | Van Geet Opening | Pfeiffer Gambit | | | |
| A00 | Van Geet Opening | Pfeiffer Gambit | Sleipnir Countergambit | | |
| A00 | Van Geet Opening | Reversed Nimzowitsch | | | |
| A00 | Van Geet Opening | Reversed Scandinavian | | | |
| A00 | Van Geet Opening | Sicilian Two Knights | | | |
| A00 | Van Geet Opening | Sleipnir Gambit | | | |
| A00 | Van Geet Opening | Twyble Attack | | | |
| A00 | Van Geet Opening | Tübingen Gambit | | | |
| A00 | Van Geet Opening | Venezolana Variation | | | |
| A00 | Van Geet Opening | Warsteiner Gambit | | | |
| A00 | Van't Kruijs Opening | | | | |
| A00 | Van't Kruijs Opening | Bouncing Bishop Variation | | | |
| A00 | Van't Kruijs Opening | Keoni-Hiva Gambit | Akahi Variation | | |
| A00 | Van't Kruijs Opening | Keoni-Hiva Gambit | Alua Variation | | |
| A00 | Van't Kruijs Opening | Keoni-Hiva Gambit | Ekolu Variation | | |
| A00 | Ware Opening | | | | |
| A00 | Ware Opening | Cologne Gambit | | | |
| A00 | Ware Opening | Crab Variation | | | |
| A00 | Ware Opening | Meadow Hay Trap | | | |
| A00 | Ware Opening | Symmetric Variation | | | |
| A00 | Ware Opening | Ware Gambit | | | |
| A00 | Ware Opening | Wing Gambit | | | |
| A01 | Nimzo-Larsen Attack | | | | |
| A01 | Nimzo-Larsen Attack | Classical Variation | | | |
| A01 | Nimzo-Larsen Attack | Dutch Variation | | | |
| A01 | Nimzo-Larsen Attack | English Variation | | | |
| A01 | Nimzo-Larsen Attack | Graz Attack | | | |
| A01 | Nimzo-Larsen Attack | Indian Variation | | | |
| A01 | Nimzo-Larsen Attack | Modern Variation | | | |
| A01 | Nimzo-Larsen Attack | Modern Variation | | | |
| A01 | Nimzo-Larsen Attack | Modern Variation | | | |
| A01 | Nimzo-Larsen Attack | Modern Variation | | | |
| A01 | Nimzo-Larsen Attack | Pachman Gambit | | | |
| A01 | Nimzo-Larsen Attack | Polish Variation | | | |
| A01 | Nimzo-Larsen Attack | Ringelbach Gambit | | | |
| A01 | Nimzo-Larsen Attack | Spike Variation | | | |
| A01 | Nimzo-Larsen Attack | Symmetrical Variation | | | |
| A02 | Bird Opening | | | | |
| A02 | Bird Opening | Batavo-Polish Attack | | | |
| A02 | Bird Opening | Double Duck Formation | | | |
| A02 | Bird Opening | From's Gambit | | | |
| A02 | Bird Opening | From's Gambit | Bahr Gambit | | |
| A02 | Bird Opening | From's Gambit | Langheld Gambit | | |
| A02 | Bird Opening | From's Gambit | Lasker Variation | | |
| A02 | Bird Opening | From's Gambit | Lipke Variation | | |
| A02 | Bird Opening | Hobbs Gambit | | | |
| A02 | Bird Opening | Hobbs-Zilbermints Gambit | | | |
| A02 | Bird Opening | Horsefly Defense | | | |
| A02 | Bird Opening | Lasker Gambit | | | |
| A02 | Bird Opening | Mujannah | | | |
| A02 | Bird Opening | Myers Defense | | | |
| A02 | Bird Opening | Platz Gambit | | | |
| A02 | Bird Opening | Schlechter Gambit | | | |
| A02 | Bird Opening | Siegener Gambit | | | |
| A02 | Bird Opening | Swiss Gambit | | | |
| A02 | Bird Opening | Wagner-Zwitersch Gambit | | | |
| A03 | Bird Opening | Dutch Variation | | | |
| A03 | Bird Opening | Dutch Variation | Dudweiler Gambit | | |
| A03 | Bird Opening | Lasker Variation | | | |
| A03 | Bird Opening | Sturm Gambit | | | |
| A03 | Bird Opening | Thomas Gambit | | | |
| A03 | Bird Opening | Williams Gambit | | | |
| A03 | Bird Opening | Williams Gambit | | | |
| A03 | Bird Opening | Williams-Zilbermints Gambit | | | |
| A04 | Colle System | Rhamphorhynchus Variation | | | |
| A04 | Modern Defense | Semi-Averbakh Variation | Polish Variation | | |
| A04 | Modern Defense | Semi-Averbakh Variation | Pterodactyl Variation | | |
| A04 | Modern Defense | Semi-Averbakh Variation | Pterodactyl Variation Accepted | | |
| A04 | Zukertort Defense | Kingside Variation | | | |
| A04 | Zukertort Defense | Sicilian Knight Variation | | | |
| A04 | Zukertort Opening | | | | |
| A04 | Zukertort Opening | Arctic Defense | | | |
| A04 | Zukertort Opening | Arctic Defense | Drunken Knight Variation | | |
| A04 | Zukertort Opening | Basman Defense | | | |
| A04 | Zukertort Opening | Black Mustang Defense | | | |
| A04 | Zukertort Opening | Drunken Cavalry Variation | | | |
| A04 | Zukertort Opening | Dutch Variation | | | |
| A04 | Zukertort Opening | Herrstrom Gambit | | | |
| A04 | Zukertort Opening | Kingside Fianchetto | | | |
| A04 | Zukertort Opening | Lisitsyn Gambit | | | |
| A04 | Zukertort Opening | Lisitsyn Gambit Deferred | | | |
| A04 | Zukertort Opening | Pirc Invitation | | | |
| A04 | Zukertort Opening | Polish Defense | | | |
| A04 | Zukertort Opening | Queen's Gambit Invitation | | | |
| A04 | Zukertort Opening | Queenside Fianchetto Variation | | | |
| A04 | Zukertort Opening | Ross Gambit | | | |
| A04 | Zukertort Opening | Shabalov Gambit | | | |
| A04 | Zukertort Opening | Sicilian Invitation | | | |
| A04 | Zukertort Opening | Slav Invitation | | | |
| A04 | Zukertort Opening | Speelsmet Gambit | | | |
| A04 | Zukertort Opening | St. George Defense | | | |
| A04 | Zukertort Opening | The Walrus | | | |
| A04 | Zukertort Opening | Vos Gambit | | | |
| A04 | Zukertort Opening | Wade Defense | | | |
| A04 | Zukertort Opening | Ware Defense | | | |
| A05 | King's Indian Attack | | | | |
| A05 | King's Indian Attack | Smyslov Variation | | | |
| A05 | King's Indian Attack | Spassky Variation | | | |
| A05 | King's Indian Attack | Symmetrical Defense | | | |
| A05 | King's Indian Attack | Wahls Defense | | | |
| A05 | Polish Opening | Zukertort System | | | |
| A05 | Zukertort Opening | | | | |
| A05 | Zukertort Opening | | | | |
| A05 | Zukertort Opening | Double Fianchetto Attack | | | |
| A05 | Zukertort Opening | Lemberger Gambit | | | |
| A05 | Zukertort Opening | Myers Polish Attack | | | |
| A05 | Zukertort Opening | Nimzo-Larsen Variation | | | |
| A05 | Zukertort Opening | Quiet System | | | |
| A06 | Nimzo-Larsen Attack | Classical Variation | | | |
| A06 | Nimzo-Larsen Attack | Norfolk Gambit | | | |
| A06 | Nimzo-Larsen Attack | Norfolk Gambit | | | |
| A06 | Zukertort Opening | | | | |
| A06 | Zukertort Opening | Ampel Variation | | | |
| A06 | Zukertort Opening | Old Indian Attack | | | |
| A06 | Zukertort Opening | Pachman Gambit | | | |
| A06 | Zukertort Opening | Regina-Nu Gambit | | | |
| A06 | Zukertort Opening | Reversed Mexican Defense | | | |
| A06 | Zukertort Opening | Santasiere's Folly | | | |
| A06 | Zukertort Opening | Tennison Gambit | | | |
| A06 | Zukertort Opening | Tennison Gambit | Brigg's Trap | | |
| A06 | Zukertort Opening | The Potato | | | |
| A07 | Hungarian Opening | Wiedenhagen-Beta Gambit | | | |
| A07 | King's Indian Attack | | | | |
| A07 | King's Indian Attack | Double Fianchetto | | | |
| A07 | King's Indian Attack | Keres Variation | | | |
| A07 | King's Indian Attack | Keres Variation | | | |
| A07 | King's Indian Attack | Omega-Delta Gambit | | | |
| A07 | King's Indian Attack | Pachman System | | | |
| A07 | King's Indian Attack | Sicilian Variation | | | |
| A07 | King's Indian Attack | Yugoslav Variation | | | |
| A08 | King's Indian Attack | French Variation | | | |
| A08 | King's Indian Attack | Sicilian Variation | | | |
| A08 | King's Indian Attack | Sicilian Variation | | | |
| A08 | King's Indian Attack | Sicilian Variation | | | |
| A08 | Zukertort Opening | Reversed Grünfeld | | | |
| A08 | Zukertort Opening | Reversed Grünfeld | | | |
| A08 | Zukertort Opening | Reversed Grünfeld | | | |
| A08 | Zukertort Opening | Reversed Grünfeld | | | |
| A09 | Réti Opening | | | | |
| A09 | Réti Opening | Advance Variation | | | |
| A09 | Réti Opening | Advance Variation | Michel Gambit | | |
| A09 | Réti Opening | Penguin Variation | | | |
| A09 | Réti Opening | Reversed Blumenfeld Gambit | | | |
| A09 | Réti Opening | Réti Accepted | | | |
| A09 | Réti Opening | Réti Gambit | Keres Variation | | |
| A09 | Réti Opening | Zilbermints Gambit | | | |
| A10 | English Opening | | | | |
| A10 | English Opening | Achilles-Omega Gambit | | | |
| A10 | English Opening | Adorjan Defense | | | |
| A10 | English Opening | Anglo-Dutch Defense | | | |
| A10 | English Opening | Anglo-Dutch Defense | Hickmann Gambit | | |
| A10 | English Opening | Anglo-Dutch Variation | Chabanon Gambit | | |
| A10 | English Opening | Anglo-Dutch Variation | Ferenc Gambit | | |
| A10 | English Opening | Anglo-Lithuanian Variation | | | |
| A10 | English Opening | Anglo-Scandinavian Defense | | | |
| A10 | English Opening | Anglo-Scandinavian Defense | Löhn Gambit | | |
| A10 | English Opening | Anglo-Scandinavian Defense | Malvinas Variation | | |
| A10 | English Opening | Anglo-Scandinavian Defense | Schulz Gambit | | |
| A10 | English Opening | Great Snake Variation | | | |
| A10 | English Opening | Jaenisch Gambit | | | |
| A10 | English Opening | King's English Variation | Botvinnik System | Prickly Pawn Pass System | |
| A10 | English Opening | Myers Defense | | | |
| A10 | English Opening | Myers Gambit | | | |
| A10 | English Opening | Porcupine Variation | | | |
| A10 | English Opening | Wade Gambit | | | |
| A10 | English Opening | Zilbermints Gambit | | | |
| A11 | English Opening | Caro-Kann Defensive System | | | |
| A12 | Réti Opening | Anglo-Slav Variation | Bled Variation | | |
| A12 | Réti Opening | Anglo-Slav Variation | Bogoljubow Variation | | |
| A12 | Réti Opening | Anglo-Slav Variation | Bogoljubow Variation | | |
| A12 | Réti Opening | Anglo-Slav Variation | Bogoljubow Variation | | |
| A12 | Réti Opening | Anglo-Slav Variation | Capablanca Variation | | |
| A12 | Réti Opening | Anglo-Slav Variation | London Defensive System | | |
| A12 | Réti Opening | Anglo-Slav Variation | New York System | | |
| A12 | Réti Opening | Anglo-Slav Variation | Torre System | | |
| A13 | English Opening | Agincourt Defense | | | |
| A13 | English Opening | Agincourt Defense | | | |
| A13 | English Opening | Agincourt Defense | | | |
| A13 | English Opening | Agincourt Defense | Bogoljubow Defense | | |
| A13 | English Opening | Agincourt Defense | Catalan Defense | | |
| A13 | English Opening | Agincourt Defense | Catalan Defense | | |
| A13 | English Opening | Agincourt Defense | Catalan Defense Accepted | | |
| A13 | English Opening | Agincourt Defense | Catalan Defense | Semi-Slav Defense | |
| A13 | English Opening | Agincourt Defense | Kurajica Defense | | |
| A13 | English Opening | Agincourt Defense | Tarrasch Defense | | |
| A13 | English Opening | Agincourt Defense | Wimpy System | | |
| A13 | English Opening | Neo-Catalan | | | |
| A13 | English Opening | Neo-Catalan Declined | | | |
| A13 | English Opening | Romanishin Gambit | | | |
| A14 | English Opening | Agincourt Defense | Keres Defense | | |
| A14 | English Opening | Agincourt Defense | Neo-Catalan Declined | | |
| A14 | Réti Opening | Anglo-Slav Variation | Bogoljubow Variation | Stonewall Line | |
| A15 | English Opening | Anglo-Indian Defense | | | |
| A15 | English Opening | Anglo-Indian Defense | Anti-Anti-Grünfeld | | |
| A15 | English Opening | Anglo-Indian Defense | Grünfeld Formation | | |
| A15 | English Opening | Anglo-Indian Defense | King's Indian Formation | | |
| A15 | English Opening | Anglo-Indian Defense | King's Indian Formation | Double Fianchetto | |
| A15 | English Opening | Anglo-Indian Defense | King's Knight Variation | | |
| A15 | English Opening | Anglo-Indian Defense | Old Indian Formation | | |
| A15 | English Opening | Anglo-Indian Defense | Queen's Indian Formation | | |
| A15 | English Opening | Anglo-Indian Defense | Queen's Indian Formation | | |
| A15 | English Opening | Anglo-Indian Defense | Romanishin Variation | | |
| A15 | English Opening | Anglo-Indian Defense | Scandinavian Defense | | |
| A15 | English Opening | Anglo-Indian Defense | Scandinavian Defense | Exchange Variation | |
| A15 | English Opening | Anglo-Indian Defense | Slav Formation | | |
| A15 | English Orangutan | | | | |
| A16 | English Opening | Anglo-Grünfeld Defense | | | |
| A16 | English Opening | Anglo-Grünfeld Defense | Korchnoi Variation | | |
| A16 | English Opening | Anglo-Indian Defense | Anglo-Grünfeld Variation | | |
| A16 | English Opening | Anglo-Indian Defense | Anglo-Grünfeld Variation | | |
| A16 | English Opening | Anglo-Indian Defense | Anglo-Grünfeld Variation | | |
| A16 | English Opening | Anglo-Indian Defense | Anglo-Grünfeld Variation | | |
| A16 | English Opening | Anglo-Indian Defense | Queen's Knight Variation | | |
| A17 | English Opening | Anglo-Indian Defense | Hedgehog System | | |
| A17 | English Opening | Anglo-Indian Defense | Nimzo-English | | |
| A17 | English Opening | Anglo-Indian Defense | Queen's Indian Formation | | |
| A17 | English Opening | Anglo-Indian Defense | Queen's Indian Variation | | |
| A17 | English Opening | Anglo-Indian Defense | Zvjaginsev-Krasenkow Attack | | |
| A18 | English Opening | Mikenas-Carls Variation | | | |
| A18 | English Opening | Mikenas-Carls Variation | | | |
| A18 | English Opening | Mikenas-Carls Variation | | | |
| A19 | English Opening | Anglo-Indian Defense | Flohr-Mikenas-Carls Variation | Nei Gambit | |
| A19 | English Opening | Mikenas-Carls | Sicilian | | |
| A20 | English Opening | Drill Variation | | | |
| A20 | English Opening | King's English Variation | | | |
| A20 | English Opening | King's English Variation | Kahiko-Hula Gambit | | |
| A20 | English Opening | King's English Variation | Nimzowitsch Variation | | |
| A20 | English Opening | King's English Variation | Nimzowitsch-Flohr Variation | | |
| A21 | English Opening | King's English Variation | | | |
| A21 | English Opening | King's English Variation | Keres Defense | | |
| A21 | English Opening | King's English Variation | Kramnik-Shirov Counterattack | | |
| A21 | English Opening | King's English Variation | Reversed Sicilian | | |
| A21 | English Opening | King's English Variation | Smyslov Defense | | |
| A21 | English Opening | King's English Variation | Troger Defense | | |
| A22 | English Opening | Carls-Bremen System | | | |
| A22 | English Opening | King's English Variation | Adhiban Gambit | | |
| A22 | English Opening | King's English Variation | Bellon Gambit | | |
| A22 | English Opening | King's English Variation | Two Knights Variation | | |
| A22 | English Opening | King's English Variation | Two Knights Variation | Reversed Dragon | |
| A34 | English Opening | Symmetrical Variation | Three Knights Variation | | |
| A22 | English Opening | King's English Variation | Two Knights Variation | Smyslov System | |
| A22 | English Opening | King's English | Erbenheimer Gambit | | |
| A22 | English Opening | King's English | Mazedonisch | | |
| A23 | English Opening | King's English Variation | Two Knights Variation | Keres Variation | |
| A23 | English Opening | King's English Variation | Two Knights Variation | Keres Variation | |
| A24 | English Opening | King's English Variation | Two Knights Variation | Fianchetto Line | |
| A25 | English Opening | Closed | Taimanov Variation | | |
| A25 | English Opening | Closed | Taimanov Variation | | |
| A25 | English Opening | King's English Variation | Bremen-Hort Variation | | |
| A25 | English Opening | King's English Variation | Closed System | | |
| A25 | English Opening | King's English Variation | Hungarian Attack | | |
| A25 | English Opening | King's English Variation | Reversed Closed Sicilian | | |
| A25 | English Opening | King's English Variation | Taimanov Variation | | |
| A26 | English Opening | King's English Variation | Botvinnik System | | |
| A26 | English Opening | King's English Variation | Closed System | Full Symmetry | |
| A27 | English Opening | King's English Variation | Three Knights System | | |
| A28 | English Opening | Four Knights System | Nimzowitsch Variation | | |
| A28 | English Opening | King's English Variation | Four Knights Variation | | |
| A28 | English Opening | King's English Variation | Four Knights Variation | | |
| A28 | English Opening | King's English Variation | Four Knights Variation | Bradley Beach Variation | |
| A28 | English Opening | King's English Variation | Four Knights Variation | Flexible Line | |
| A28 | English Opening | King's English Variation | Four Knights Variation | Korchnoi Line | |
| A28 | English Opening | King's English Variation | Four Knights Variation | Quiet Line | |
| A28 | English Opening | King's English Variation | Four Knights Variation | Quiet Line | |
| A28 | English Opening | King's English Variation | Four Knights Variation | Quiet Line | |
| A29 | English Opening | King's English Variation | Four Knights Variation | Fianchetto Line | |
| A29 | English Opening | King's English Variation | Four Knights Variation | Fianchetto Line | |
| A29 | English Opening | King's English Variation | Four Knights Variation | Fianchetto Line | |
| A29 | English Opening | King's English Variation | Four Knights Variation | Fianchetto Line | |
| A29 | English Opening | King's English Variation | Four Knights Variation | Fianchetto Line | Delayed .. Nc6 |
| A29 | English Opening | King's English Variation | Four Knights Variation | Fianchetto Line | with Bc5 |
| A29 | English Opening | King's English Variation | Four Knights Variation | Fianchetto Line | with Nb6 |
| A30 | English Opening | Symmetrical Variation | | | |
| A30 | English Opening | Symmetrical Variation | | | |
| A30 | English Opening | Symmetrical Variation | Hedgehog Defense | | |
| A30 | English Opening | Symmetrical Variation | Napolitano Gambit | | |
| A30 | English Opening | Symmetrical | Hedgehog | Flexible Formation | |
| A30 | English Opening | Wing Gambit | | | |
| A31 | English Opening | Symmetrical Variation | Anti-Benoni Variation | | |
| A32 | English Opening | Symmetrical Variation | Anti-Benoni Variation | Spielmann Defense | |
| A33 | English Opening | Symmetrical Variation | Anti-Benoni Variation | Geller Variation | |
| A33 | English Opening | Symmetrical Variation | Anti-Benoni Variation | Spielmann Defense | |
| A34 | English Opening | Symmetrical Variation | Fianchetto Variation | | |
| A34 | English Opening | Symmetrical Variation | Normal Variation | | |
| A34 | English Opening | Symmetrical Variation | Rubinstein Variation | | |
| A40 | Englund Gambit Declined | Reversed French | | | |
| A35 | English Opening | Symmetrical Variation | Four Knights Variation | | |
| A35 | English Opening | Symmetrical Variation | Two Knights Variation | | |
| A36 | English Opening | Symmetrical Variation | Botvinnik System | | |
| A36 | English Opening | Symmetrical Variation | Botvinnik System Reversed | with e3 | |
| A36 | English Opening | Symmetrical Variation | Two Knights | Fianchetto Variation | |
| A36 | English Opening | Symmetrical Variation | Ultra-Symmetrical Variation | | |
| A37 | English Opening | Symmetrical Variation | Botvinnik System Reversed | with Nf3 | |
| A37 | English Opening | Symmetrical Variation | Three Knights | Fianchetto Variation | |
| A38 | English Opening | Symmetrical Variation | Double Fianchetto | | |
| A38 | English Opening | Symmetrical Variation | Duchamp Variation | | |
| A38 | English Opening | Symmetrical Variation | Full Symmetry Line | | |
| A39 | English Opening | Symmetrical Variation | Mecking Variation | | |
| A40 | Australian Defense | | | | |
| A40 | Benoni Defense | Franco-Sicilian Hybrid | | | |
| A40 | Borg Defense | Borg Gambit | | | |
| A40 | Colle System | Pterodactyl Variation | | | |
| A40 | Colle System | Siroccopteryx Variation | | | |
| A40 | English Defense | | | | |
| A40 | English Defense | | | | |
| A40 | English Defense | Eastbourne Gambit | | | |
| A40 | English Defense | Hartlaub Gambit Accepted | | | |
| A40 | English Defense | Hartlaub Gambit Declined | | | |
| A40 | English Defense | Perrin Variation | | | |
| A40 | English Defense | Poli Gambit | | | |
| A40 | Englund Gambit | | | | |
| A40 | Englund Gambit Declined | | | | |
| A40 | Englund Gambit Declined | Diemer Counterattack | | | |
| A40 | Englund Gambit Declined | Reversed Alekhine | | | |
| A40 | Englund Gambit Declined | Reversed Brooklyn | | | |
| A40 | Englund Gambit Declined | Reversed Krebs | | | |
| A40 | Englund Gambit Declined | Reversed Mokele Mbembe | | | |
| A40 | Englund Gambit | Felbecker Gambit | | | |
| A40 | Englund Gambit | Hartlaub-Charlick Gambit | | | |
| A40 | Englund Gambit | Main Line | | | |
| A40 | Englund Gambit | Mosquito Gambit | | | |
| A40 | Englund Gambit | Soller Gambit | | | |
| A40 | Englund Gambit | Soller Gambit Deferred | | | |
| A40 | Englund Gambit | Stockholm Variation | | | |
| A40 | Englund Gambit | Zilbermints Gambit | | | |
| A40 | Horwitz Defense | | | | |
| A40 | Horwitz Defense | Zilbermints Gambit | | | |
| A40 | Kangaroo Defense | | | | |
| A40 | Kangaroo Defense | Keres Defense | Transpositional Variation | | |
| A40 | Mikenas Defense | | | | |
| A40 | Mikenas Defense | Cannstatter Variation | | | |
| A40 | Mikenas Defense | Lithuanian Variation | | | |
| A40 | Mikenas Defense | Pozarek Gambit | | | |
| A40 | Modern Defense | Beefeater Variation | | | |
| A40 | Modern Defense | Lizard Defense | Pirc-Diemer Gambit | | |
| A40 | Montevideo Defense | | | | |
| A40 | Polish Defense | | | | |
| A40 | Polish Defense | Spassky Gambit Accepted | | | |
| A40 | Pterodactyl Defense | Central | Benoni Beefeater Pterodactyl | | |
| A40 | Pterodactyl Defense | Central | Benoni Pterodactyl | | |
| A40 | Pterodactyl Defense | Fianchetto | Queen Benoni Pterodactyl | | |
| A40 | Pterodactyl Defense | Fianchetto | Queen Pteranodon | | |
| A40 | Pterodactyl Defense | Fianchetto | Queen Pterodactyl | | |
| A40 | Pterodactyl Defense | Queen Pterodactyl | Quiet Line | | |
| A40 | Queen's Pawn Game | | | | |
| A40 | Queen's Pawn Game | Anglo-Slav Opening | | | |
| A40 | Queen's Pawn Game | Modern Defense | | | |
| A40 | Slav Indian | Kudischewitsch Gambit | | | |
| A40 | Zaire Defense | | | | |
| A41 | Modern Defense | | | | |
| A41 | Modern Defense | Neo-Modern Defense | | | |
| A41 | Old Indian Defense | | | | |
| A41 | Queen's Pawn Game | | | | |
| A41 | Rat Defense | English Rat | | | |
| A41 | Rat Defense | English Rat | Lisbon Gambit | | |
| A41 | Rat Defense | English Rat | Pounds Gambit | | |
| A41 | Robatsch Defense | | | | |
| A41 | Wade Defense | | | | |
| A41 | Zukertort Opening | Wade Defense | Chigorin Plan | | |
| A42 | Modern Defense | Averbakh System | | | |
| A42 | Modern Defense | Averbakh Variation | Pseudo-Sämisch | | |
| A42 | Modern Defense | Kotov Variation | | | |
| A42 | Modern Defense | Randspringer Variation | | | |
| A42 | Pterodactyl Defense | | | | |
| A42 | Pterodactyl Defense | Central | Bogolubovia | | |
| A43 | Benoni Defense | Benoni Gambit Accepted | | | |
| A43 | Benoni Defense | Benoni Gambit | Schlenker Defense | | |
| A43 | Benoni Defense | Benoni-Indian Defense | | | |
| A43 | Benoni Defense | Benoni-Indian Defense | Kingside Move Order | | |
| A43 | Benoni Defense | Benoni-Staunton Gambit | | | |
| A43 | Benoni Defense | Cormorant Gambit | | | |
| A43 | Benoni Defense | French Benoni | | | |
| A43 | Benoni Defense | Hawk Variation | | | |
| A43 | Benoni Defense | Old Benoni | | | |
| A43 | Benoni Defense | Old Benoni | | | |
| A43 | Benoni Defense | Old Benoni | | | |
| A43 | Benoni Defense | Old Benoni | Mujannah Formation | | |
| A43 | Benoni Defense | Old Benoni | Schmid Variation | | |
| A43 | Benoni Defense | Snail Variation | | | |
| A43 | Benoni Defense | Woozle | | | |
| A43 | Benoni Defense | Zilbermints-Benoni Gambit | | | |
| A43 | Benoni Defense | Zilbermints-Benoni Gambit | | | |
| A45 | Trompowsky Attack | Poisoned Pawn Variation | | | |
| A43 | Benoni Defense | Zilbermints-Benoni Gambit | Tamarkin Countergambit | | |
| A43 | Indian Defense | Pseudo-Benko | | | |
| A43 | Queen's Pawn Game | Liedmann Gambit | | | |
| A44 | Benoni Defense | Old Benoni | | | |
| A44 | Benoni Defense | Semi-Benoni | | | |
| A45 | Amazon Attack | Siberian Attack | | | |
| A45 | Canard Opening | | | | |
| A45 | Indian Defense | | | | |
| A45 | Indian Defense | Gedult Attack | Gedult Attack | | |
| A45 | Indian Defense | Gibbins-Weidenhagen Gambit | | | |
| A45 | Indian Defense | Gibbins-Weidenhagen Gambit Accepted | | | |
| A45 | Indian Defense | Gibbins-Weidenhagen Gambit | Maltese Falcon | | |
| A45 | Indian Defense | Gibbins-Weidenhagen Gambit | Oshima Defense | | |
| A45 | Indian Defense | Gibbins-Weidenhagen Gambit | Stummer Gambit | | |
| A45 | Indian Defense | Lazard Gambit | | | |
| A45 | Indian Defense | Maddigan Gambit | | | |
| A45 | Indian Defense | Omega Gambit | | | |
| A45 | Indian Defense | Omega Gambit | Arafat Gambit | | |
| A45 | Indian Defense | Paleface Attack | Blackmar-Diemer Gambit Deferred | | |
| A45 | Indian Defense | Pawn Push Variation | | | |
| A45 | Indian Defense | Reversed Chigorin Defense | | | |
| A45 | Indian Defense | Tartakower Attack | | | |
| A45 | Paleface Attack | | | | |
| A45 | Queen's Pawn Game | Chigorin Variation | | | |
| A45 | Queen's Pawn Game | Veresov | Richter Attack | | |
| A45 | Trompowsky Attack | | | | |
| A45 | Trompowsky Attack | Borg Variation | | | |
| A45 | Trompowsky Attack | Classical Defense | | | |
| A45 | Trompowsky Attack | Classical Defense | Big Center Variation | | |
| A45 | Trompowsky Attack | Edge Variation | | | |
| A45 | Trompowsky Attack | Edge Variation | Hergert Gambit | | |
| A45 | Trompowsky Attack | Edge Variation | Hergert Gambit | | |
| A50 | Indian Defense | Medusa Gambit | | | |
| A45 | Trompowsky Attack | Raptor Variation | | | |
| A45 | Trompowsky Attack | Raptor Variation | Hergert Gambit | | |
| A46 | Döry Defense | | | | |
| A46 | Indian Defense | Czech-Indian | | | |
| A46 | Indian Defense | Knights Variation | | | |
| A46 | Indian Defense | Knights Variation | Alburt-Miles Variation | | |
| A46 | Indian Defense | London System | | | |
| A46 | Indian Defense | Polish Variation | | | |
| A46 | Indian Defense | Spielmann-Indian | | | |
| A46 | Indian Defense | Wade-Tartakower Defense | | | |
| A46 | Queen's Pawn Game | Torre Attack | Breyer Variation | | |
| A46 | Queen's Pawn Game | Veresov Attack | Classical Defense | | |
| A46 | Torre Attack | Classical Defense | | | |
| A46 | Torre Attack | Classical Defense | Nimzowitsch Variation | | |
| A46 | Torre Attack | Classical Defense | Petrosian Gambit | | |
| A46 | Torre Attack | Wagner Gambit | | | |
| A46 | Yusupov-Rubinstein System | | | | |
| A47 | Indian Defense | Schnepper Gambit | | | |
| A47 | Marienbad System | | | | |
| A47 | Marienbad System | Berg Variation | | | |
| A47 | Pseudo Queen's Indian Defense | | | | |
| A48 | East Indian Defense | | | | |
| A48 | Indian Defense | Colle System | King's Indian Variation | | |
| A48 | London System | | | | |
| A48 | Queen's Pawn Game | Barry Attack | | | |
| A48 | Queen's Pawn Game | Barry Attack | | | |
| A48 | Queen's Pawn Game | Barry Attack | Grünfeld Variation | | |
| A48 | Queen's Pawn Game | Barry Attack | Tarzan Attack | | |
| A48 | Queen's Pawn Game | Torre Attack | Grünfeld Variation | Main Line | |
| A48 | Torre Attack | Fianchetto Defense | | | |
| A48 | Torre Attack | Fianchetto Defense | Euwe Variation | | |
| A49 | Indian Defense | Przepiorka Variation | | | |
| A50 | Indian Defense | Normal Variation | | | |
| A50 | Indian Defense | Pyrenees Gambit | | | |
| A50 | Mexican Defense | | | | |
| A50 | Mexican Defense | Horsefly Gambit | | | |
| A50 | Queen's Indian Accelerated | | | | |
| A50 | Slav Indian | | | | |
| A51 | Indian Defense | Budapest Defense | | | |
| A51 | Indian Defense | Budapest Defense | Fajarowicz Defense | Bonsdorf Variation | |
| A51 | Indian Defense | Budapest Defense | Fajarowicz Variation | | |
| A51 | Indian Defense | Budapest Defense | Fajarowicz-Steiner Variation | | |
| A52 | Indian Defense | Budapest Defense | | | |
| A52 | Indian Defense | Budapest Defense | Adler Variation | | |
| A52 | Indian Defense | Budapest Defense | Alekhine Variation | | |
| A52 | Indian Defense | Budapest Defense | Alekhine Variation | Abonyi Variation | |
| A52 | Indian Defense | Budapest Defense | Alekhine Variation | Tartakower Defense | |
| A52 | Indian Defense | Budapest Defense | Rubinstein Variation | | |
| A53 | Old Indian Defense | | | | |
| A53 | Old Indian Defense | Aged Gibbon Gambit | | | |
| A53 | Old Indian Defense | Czech Variation | with Nc3 | | |
| A53 | Old Indian Defense | Czech Variation | with Nf3 | | |
| A53 | Old Indian Defense | Janowski Variation | | | |
| A53 | Old Indian Defense | Janowski Variation | Fianchetto Variation | | |
| A53 | Old Indian Defense | Janowski Variation | Grinberg Gambit | | |
| A53 | Old Indian Defense | Janowski Variation | Main Line | | |
| A54 | Old Indian Defense | Duz-Khotimirsky Variation | | | |
| A54 | Old Indian Defense | Tartakower-Indian | | | |
| A54 | Old Indian Defense | Two Knights Variation | | | |
| A54 | Old Indian Defense | Ukrainian Variation | | | |
| A55 | Old Indian Defense | Normal Variation | | | |
| A56 | Benoni Defense | | | | |
| A56 | Benoni Defense | Czech Benoni Defense | | | |
| A56 | Benoni Defense | Hromádka System | | | |
| A56 | Benoni Defense | King's Indian System | | | |
| A56 | Benoni Defense | Weenink Variation | | | |
| A56 | Grünfeld Defense | Three Knights Variation | Burille Variation | Reversed Tarrasch | |
| A56 | Vulture Defense | | | | |
| A57 | Benko Gambit | | | | |
| A57 | Benko Gambit Accepted | | | | |
| A57 | Benko Gambit Accepted | Dlugy Variation | | | |
| A57 | Benko Gambit Accepted | Modern Variation | | | |
| A57 | Benko Gambit Accepted | Pawn Return Variation | | | |
| A57 | Benko Gambit Declined | Bishop Attack | | | |
| A57 | Benko Gambit Declined | Hjørring Countergambit | | | |
| A57 | Benko Gambit Declined | Main Line | | | |
| A57 | Benko Gambit Declined | Pseudo-Sämisch | | | |
| A57 | Benko Gambit Declined | Quiet Line | | | |
| A57 | Benko Gambit Declined | Sosonko Variation | | | |
| A57 | Benko Gambit | Mutkin Countergambit | | | |
| A57 | Benko Gambit | Nescafe Frappe Attack | | | |
| A57 | Benko Gambit | Zaitsev System | | | |
| A57 | Benko Gambit | Zaitsev Variation | Nescafe Frappe Attack | | |
| A58 | Benko Gambit Accepted | Central Storming Variation | | | |
| A58 | Benko Gambit Accepted | Fianchetto Variation | | | |
| A58 | Benko Gambit Accepted | Fully Accepted Variation | | | |
| A58 | Benko Gambit | Fianchetto Variation | | | |
| A58 | Benko Gambit | Nd2 Variation | | | |
| A59 | Benko Gambit | | | | |
| A59 | Benko Gambit Accepted | King Walk Variation | | | |
| A59 | Benko Gambit Accepted | Yugoslav | | | |
| A59 | Benko Gambit Accepted | Yugoslav | | | |
| A60 | Benoni Defense | Modern Variation | | | |
| A60 | Benoni Defense | Modern Variation | Snake Variation | | |
| A61 | Benoni Defense | | | | |
| A61 | Benoni Defense | Fianchetto Variation | | | |
| A61 | Benoni Defense | Knight's Tour Variation | | | |
| A61 | Benoni Defense | Uhlmann Variation | | | |
| A62 | Benoni Defense | Fianchetto Variation | | | |
| A63 | Benoni Defense | Fianchetto Variation | Hastings Defense | | |
| A64 | Benoni Defense | Fianchetto Variation | Hastings Defense | Main Line | |
| A65 | Benoni Defense | King's Pawn Line | | | |
| A66 | Benoni Defense | Mikenas Variation | | | |
| A66 | Benoni Defense | Pawn Storm Variation | | | |
| A67 | Benoni Defense | Taimanov Variation | | | |
| A68 | Benoni Defense | Four Pawns Attack | | | |
| A69 | Benoni Defense | Four Pawns Attack | Main Line | | |
| A70 | Benoni Defense | Classical Variation | | | |
| A70 | Benoni Defense | Classical Variation | New York Variation | | |
| A70 | Benoni Defense | Classical Variation | Traditional Variation | | |
| A71 | Benoni Defense | Classical Variation | Averbakh-Grivas Attack | | |
| A72 | Benoni Defense | Classical Variation | | | |
| A73 | Benoni Defense | Classical Variation | Main Line | | |
| A74 | Benoni Defense | Classical Variation | Full Line | | |
| A75 | Benoni Defense | Classical Variation | Argentine Counterattack | | |
| A76 | Benoni Defense | Classical Variation | Czerniak Defense | | |
| A77 | Benoni Defense | Classical Variation | Czerniak Defense | Tal Line | |
| A78 | Benoni Defense | Classical Variation | Czerniak Defense | | |
| A79 | Benoni Defense | Classical Variation | Czerniak Defense | | |
| A80 | Dutch Defense | | | | |
| A80 | Dutch Defense | Alapin Variation | | | |
| A80 | Dutch Defense | Hevendehl Gambit | | | |
| A80 | Dutch Defense | Hopton Attack | | | |
| A80 | Dutch Defense | Janzen-Korchnoi Gambit | | | |
| A80 | Dutch Defense | Kingfisher Gambit | | | |
| A80 | Dutch Defense | Korchnoi Attack | | | |
| A80 | Dutch Defense | Krejcik Gambit | | | |
| A80 | Dutch Defense | Krejcik Gambit | Tate Gambit | | |
| A80 | Dutch Defense | Manhattan Gambit | Anti-Classical Line | | |
| A80 | Dutch Defense | Manhattan Gambit | Anti-Leningrad | | |
| A80 | Dutch Defense | Manhattan Gambit | Anti-Modern | | |
| A80 | Dutch Defense | Manhattan Gambit | Anti-Stonewall | | |
| A80 | Dutch Defense | Omega-Isis Gambit | | | |
| A80 | Dutch Defense | Raphael Variation | | | |
| A80 | Dutch Defense | Senechaud Gambit | | | |
| A80 | Dutch Defense | Spielmann Gambit | | | |
| A80 | Queen's Pawn Game | Veresov Attack | Dutch System | | |
| A81 | Dutch Defense | Blackburne Variation | | | |
| A81 | Dutch Defense | Fianchetto Attack | | | |
| A81 | Dutch Defense | Leningrad Variation | Carlsbad Variation | | |
| A81 | Dutch Defense | Leningrad | Basman System | | |
| A81 | Dutch Defense | Semi-Leningrad Variation | | | |
| A82 | Dutch Defense | Blackmar's Second Gambit | | | |
| A82 | Dutch Defense | Staunton Gambit | | | |
| A82 | Dutch Defense | Staunton Gambit Accepted | | | |
| A82 | Dutch Defense | Staunton Gambit | American Attack | | |
| A82 | Dutch Defense | Staunton Gambit | Tartakower Variation | | |
| A82 | Rat Defense | Balogh Defense | | | |
| A83 | Dutch Defense | Staunton Gambit | | | |
| A83 | Dutch Defense | Staunton Gambit | Alekhine Variation | | |
| B33 | Sicilian Defense | Open | | | |
| A83 | Dutch Defense | Staunton Gambit | Chigorin Variation | | |
| A83 | Dutch Defense | Staunton Gambit | Lasker Variation | | |
| A83 | Dutch Defense | Staunton Gambit | Nimzowitsch Variation | | |
| A84 | Dutch Defense | | | | |
| A84 | Dutch Defense | Bellon Gambit | | | |
| A84 | Dutch Defense | Bladel Variation | | | |
| A84 | Dutch Defense | Classical Variation | | | |
| A84 | Dutch Defense | Krause Variation | | | |
| A84 | Dutch Defense | Normal Variation | | | |
| A84 | Dutch Defense | Rubinstein Variation | | | |
| A85 | Dutch Defense | Queen's Knight Variation | | | |
| A86 | Dutch Defense | Fianchetto Variation | | | |
| A86 | Dutch Defense | Hort-Antoshin System | | | |
| A86 | Dutch Defense | Leningrad Variation | | | |
| A87 | Dutch Defense | Leningrad Variation | | | |
| A88 | Dutch Defense | Leningrad Variation | Warsaw Variation | | |
| A89 | Dutch Defense | Leningrad Variation | Matulovic Variation | | |
| A90 | Dutch Defense | Classical Variation | | | |
| A90 | Dutch Defense | Classical Variation | | | |
| A90 | Dutch Defense | Nimzo-Dutch Variation | | | |
| A90 | Dutch Defense | Nimzo-Dutch Variation | Alekhine Variation | | |
| A90 | Dutch Defense | Stonewall Variation | Modern Variation | | |
| A91 | Dutch Defense | Classical Variation | | | |
| A91 | Dutch Defense | Classical Variation | Blackburne Attack | | |
| A92 | Dutch Defense | Alekhine Variation | | | |
| A92 | Dutch Defense | Classical Variation | | | |
| A92 | Dutch Defense | Stonewall Variation | | | |
| A92 | Dutch Defense | Stonewall Variation | | | |
| A93 | Dutch Defense | Stonewall Variation | Botvinnik Variation | | |
| A94 | Dutch Defense | Stonewall Variation | | | |
| A95 | Dutch Defense | Stonewall Variation | | | |
| A95 | Dutch Defense | Stonewall Variation | Chekhover Variation | | |
| A96 | Dutch Defense | Classical Variation | | | |
| A96 | Dutch Defense | Classical Variation | Buenos Aires Variation | | |
| A96 | Dutch Defense | Classical Variation | Huisl Variation | | |
| A97 | Dutch Defense | Classical Variation | Ilyin-Zhenevsky Variation | | |
| A97 | Dutch Defense | Classical Variation | Ilyin-Zhenevsky Variation | Winter Variation | |
| A98 | Dutch Defense | Classical Variation | Ilyin-Zhenevsky Variation | Alatortsev-Lisitsyn Line | |
| A99 | Dutch Defense | Classical Variation | Ilyin-Zhenevsky Variation | Modern Main Line | |
| B00 | Barnes Defense | | | | |
| B00 | Borg Defense | | | | |
| B00 | Borg Defense | Borg Gambit | | | |
| B00 | Borg Defense | Troon Gambit | | | |
| B00 | Borg Defense | Zilbermints Gambit | | | |
| B00 | Carr Defense | | | | |
| B00 | Carr Defense | Zilbermints Gambit | | | |
| B00 | Duras Gambit | | | | |
| B00 | Fried Fox Defense | | | | |
| B00 | Goldsmith Defense | | | | |
| B00 | Goldsmith Defense | Picklepuss Defense | | | |
| B00 | Guatemala Defense | | | | |
| B00 | Hippopotamus Defense | | | | |
| B00 | Hippopotamus Defense | | | | |
| B00 | King's Pawn Game | | | | |
| B00 | Lemming Defense | | | | |
| B00 | Lion Defense | Lion's Jaw | | | |
| B00 | Nimzowitsch Defense | | | | |
| B00 | Nimzowitsch Defense | | | | |
| B00 | Nimzowitsch Defense | Breyer Variation | | | |
| B00 | Nimzowitsch Defense | Colorado Countergambit | | | |
| B00 | Nimzowitsch Defense | Colorado Countergambit Accepted | | | |
| B00 | Nimzowitsch Defense | Declined Variation | | | |
| B00 | Nimzowitsch Defense | El Columpio Defense | | | |
| B00 | Nimzowitsch Defense | El Columpio Defense | El Columpio Gambit | | |
| B00 | Nimzowitsch Defense | El Columpio Defense | Exchange Variation | | |
| B00 | Nimzowitsch Defense | El Columpio Defense | Pin Variation | | |
| B00 | Nimzowitsch Defense | Franco-Nimzowitsch Variation | | | |
| B00 | Nimzowitsch Defense | French Connection | | | |
| B00 | Nimzowitsch Defense | Hornung Gambit | | | |
| B00 | Nimzowitsch Defense | Kennedy Variation | | | |
| B00 | Nimzowitsch Defense | Kennedy Variation | Bielefelder Gambit | | |
| B00 | Nimzowitsch Defense | Kennedy Variation | Hammer Gambit | | |
| B00 | Nimzowitsch Defense | Kennedy Variation | Herford Gambit | | |
| B00 | Nimzowitsch Defense | Kennedy Variation | Keres Attack | | |
| B00 | Nimzowitsch Defense | Kennedy Variation | Linksspringer Variation | | |
| B00 | Nimzowitsch Defense | Kennedy Variation | Main Line | | |
| B00 | Nimzowitsch Defense | Kennedy Variation | Paulsen Attack | | |
| B00 | Nimzowitsch Defense | Kennedy Variation | Riemann Defense | | |
| B00 | Nimzowitsch Defense | Kennedy Variation | de Smet Gambit | | |
| B00 | Nimzowitsch Defense | Mikenas Variation | | | |
| B00 | Nimzowitsch Defense | Neo-Mongoloid Defense | | | |
| B00 | Nimzowitsch Defense | Pirc Connection | | | |
| B00 | Nimzowitsch Defense | Pseudo-Spanish Variation | | | |
| B00 | Nimzowitsch Defense | Scandinavian Variation | | | |
| B00 | Nimzowitsch Defense | Scandinavian Variation | Aachen Gambit | | |
| B00 | Nimzowitsch Defense | Scandinavian Variation | Advance Variation | | |
| B00 | Nimzowitsch Defense | Scandinavian Variation | Bogoljubow Variation | | |
| B00 | Nimzowitsch Defense | Scandinavian Variation | Bogoljubow Variation | | |
| B00 | Nimzowitsch Defense | Scandinavian Variation | Bogoljubow Variation | Brandics Gambit | |
| B00 | Nimzowitsch Defense | Scandinavian Variation | Bogoljubow Variation | Erben Gambit | |
| B00 | Nimzowitsch Defense | Scandinavian Variation | Bogoljubow Variation | Heinola-Deppe Gambit | |
| B00 | Nimzowitsch Defense | Scandinavian Variation | Bogoljubow Variation | Nimzowitsch Gambit | |
| B00 | Nimzowitsch Defense | Scandinavian Variation | Bogoljubow Variation | Richter Gambit | |
| B00 | Nimzowitsch Defense | Scandinavian Variation | Bogoljubow Variation | Vehre Variation | |
| B00 | Nimzowitsch Defense | Scandinavian Variation | Exchange Variation | | |
| B00 | Nimzowitsch Defense | Scandinavian Variation | Exchange Variation | Marshall Gambit | |
| B00 | Nimzowitsch Defense | Wheeler Gambit | | | |
| B00 | Nimzowitsch Defense | Williams Variation | | | |
| B00 | Nimzowitsch Defense | Woodchuck Variation | | | |
| B00 | Owen Defense | | | | |
| B00 | Owen Defense | Hekili-Loa Gambit | | | |
| B00 | Owen Defense | Matovinsky Gambit | | | |
| B00 | Owen Defense | Naselwaus Gambit | | | |
| B00 | Owen Defense | Smith Gambit | | | |
| B00 | Owen Defense | Unicorn Variation | | | |
| B00 | Owen Defense | Wind Gambit | | | |
| B00 | Pirc Defense | | | | |
| B00 | Pirc Defense | | | | |
| B00 | Pirc Defense | | | | |
| B00 | Pirc Defense | Roscher Gambit | | | |
| B00 | Rat Defense | Antal Defense | | | |
| B00 | Rat Defense | Fuller Gambit | | | |
| B00 | Rat Defense | Harmonist | | | |
| B00 | Rat Defense | Petruccioli Attack | | | |
| B00 | Rat Defense | Spike Attack | | | |
| B00 | St. George Defense | | | | |
| B00 | St. George Defense | Polish Variation | | | |
| B00 | St. George Defense | San Jorge Variation | | | |
| B00 | St. George Defense | Zilbermints Gambit | | | |
| B00 | Van Geet Opening | Berlin Gambit | | | |
| B00 | Ware Defense | | | | |
| B00 | Ware Defense | Snagglepuss Defense | | | |
| B01 | Scandinavian Defense | | | | |
| B01 | Scandinavian Defense | | | | |
| B01 | Scandinavian Defense | Anderssen Counterattack | | | |
| B01 | Scandinavian Defense | Anderssen Counterattack | Collijn Variation | | |
| B01 | Scandinavian Defense | Anderssen Counterattack | Goteborg System | | |
| B01 | Scandinavian Defense | Anderssen Counterattack | Orthodox Attack | | |
| B01 | Scandinavian Defense | Blackburne Gambit | | | |
| B01 | Scandinavian Defense | Blackburne-Kloosterboer Gambit | | | |
| B01 | Scandinavian Defense | Boehnke Gambit | | | |
| B01 | Scandinavian Defense | Bronstein Variation | | | |
| B01 | Scandinavian Defense | Classical Variation | | | |
| B01 | Scandinavian Defense | Grünfeld Variation | | | |
| B01 | Scandinavian Defense | Gubinsky-Melts Defense | | | |
| B01 | Scandinavian Defense | Icelandic-Palme Gambit | | | |
| B01 | Scandinavian Defense | Kiel Variation | | | |
| B01 | Scandinavian Defense | Kloosterboer Gambit | | | |
| B01 | Scandinavian Defense | Kádas Gambit | | | |
| B01 | Scandinavian Defense | Lasker Variation | | | |
| B01 | Scandinavian Defense | Main Line | | | |
| B01 | Scandinavian Defense | Main Line | Leonhardt Gambit | | |
| B01 | Scandinavian Defense | Main Line | Mieses Variation | | |
| B01 | Scandinavian Defense | Marshall Variation | | | |
| B01 | Scandinavian Defense | Mieses-Kotroc Variation | | | |
| B01 | Scandinavian Defense | Modern Variation | | | |
| B01 | Scandinavian Defense | Modern Variation | | | |
| B01 | Scandinavian Defense | Modern Variation | Gipslis Variation | | |
| B01 | Scandinavian Defense | Modern Variation | Wing Gambit | | |
| B01 | Scandinavian Defense | Panov Transfer | | | |
| B01 | Scandinavian Defense | Portuguese Gambit | | | |
| B01 | Scandinavian Defense | Portuguese Gambit | Banker Variation | | |
| B01 | Scandinavian Defense | Portuguese Gambit | Classical Variation | | |
| B01 | Scandinavian Defense | Portuguese Gambit | Correspondence Refutation | | |
| B01 | Scandinavian Defense | Portuguese Gambit | Elbow Variation | | |
| B01 | Scandinavian Defense | Portuguese Gambit | Jadoul Variation | | |
| B01 | Scandinavian Defense | Portuguese Gambit | Lusophobe Variation | | |
| B01 | Scandinavian Defense | Portuguese Gambit | Melbourne Shuffle Variation | | |
| B01 | Scandinavian Defense | Portuguese Gambit | Wuss Variation | | |
| B01 | Scandinavian Defense | Richter Variation | | | |
| B01 | Scandinavian Defense | Richter Variation | | | |
| B01 | Scandinavian Defense | Schiller-Pytel Variation | | | |
| B01 | Scandinavian Defense | Schiller-Pytel Variation | Modern Variation | | |
| B01 | Scandinavian Defense | Valencian Variation | | | |
| B01 | Scandinavian Defense | Valencian Variation | Ilundain Variation | | |
| B01 | Scandinavian Defense | Valencian Variation | Main Line | | |
| B01 | Scandinavian Defense | Zilbermints Gambit | | | |
| B01 | Van Geet Opening | Grünfeld Defense | | | |
| B02 | Alekhine Defense | | | | |
| B02 | Alekhine Defense | Brooklyn Variation | | | |
| B02 | Alekhine Defense | Brooklyn Variation | Everglades Variation | | |
| B02 | Alekhine Defense | Buckley Attack | | | |
| B02 | Alekhine Defense | Hunt Variation | Lasker Simul Gambit | | |
| B02 | Alekhine Defense | Hunt Variation | Matsukevich Gambit | | |
| B02 | Alekhine Defense | Hunt Variation | Mikenas Gambit | | |
| B02 | Alekhine Defense | Kmoch Variation | | | |
| B02 | Alekhine Defense | Krejcik Variation | | | |
| B02 | Alekhine Defense | Krejcik Variation | Krejcik Gambit | | |
| B02 | Alekhine Defense | Maróczy Variation | | | |
| B02 | Alekhine Defense | Mokele Mbembe | | | |
| B02 | Alekhine Defense | Mokele Mbembe | Modern Line | | |
| B02 | Alekhine Defense | Mokele Mbembe | Vavra Defense | | |
| B02 | Alekhine Defense | Normal Variation | | | |
| B02 | Alekhine Defense | Scandinavian Variation | | | |
| B02 | Alekhine Defense | Scandinavian Variation | Geschev Gambit | | |
| B02 | Alekhine Defense | Scandinavian Variation | Myers Gambit | | |
| B02 | Alekhine Defense | Spielmann Gambit | | | |
| B02 | Alekhine Defense | Steiner Variation | | | |
| B02 | Alekhine Defense | Sämisch Attack | | | |
| B02 | Alekhine Defense | The Squirrel | | | |
| B02 | Alekhine Defense | Two Pawns Attack | | | |
| B02 | Alekhine Defense | Two Pawns Attack | Lasker Variation | | |
| B02 | Alekhine Defense | Two Pawns Attack | Mikenas Variation | | |
| B02 | Alekhine Defense | Two Pawns Attack | Tate Variation | | |
| B02 | Alekhine Defense | Welling Variation | | | |
| B03 | Alekhine Defense | | | | |
| B03 | Alekhine Defense | | | | |
| B03 | Alekhine Defense | | | | |
| B03 | Alekhine Defense | Balogh Variation | | | |
| B03 | Alekhine Defense | Exchange Variation | | | |
| B03 | Alekhine Defense | Exchange Variation | Karpov Variation | | |
| B03 | Alekhine Defense | Exchange Variation | Voronezh Variation | | |
| B03 | Alekhine Defense | Four Pawns Attack | | | |
| B03 | Alekhine Defense | Four Pawns Attack | Cambridge Gambit | | |
| B03 | Alekhine Defense | Four Pawns Attack | Fianchetto Variation | | |
| B03 | Alekhine Defense | Four Pawns Attack | Ilyin-Zhenevsky Variation | | |
| B03 | Alekhine Defense | Four Pawns Attack | Korchnoi Variation | | |
| B03 | Alekhine Defense | Four Pawns Attack | Main Line | | |
| B03 | Alekhine Defense | Four Pawns Attack | Tartakower Variation | | |
| B06 | Pterodactyl Defense | Western | Siroccopteryx | | |
| B03 | Alekhine Defense | Four Pawns Attack | Trifunovic Variation | | |
| B03 | Alekhine Defense | Hunt Variation | | | |
| B03 | Alekhine Defense | Modern Variation | Alekhine Gambit | | |
| B03 | Alekhine Defense | O'Sullivan Gambit | | | |
| B04 | Alekhine Defense | Modern Variation | | | |
| B04 | Alekhine Defense | Modern Variation | Alburt Variation | | |
| B04 | Alekhine Defense | Modern Variation | Keres Variation | | |
| B04 | Alekhine Defense | Modern Variation | Larsen Variation | | |
| B04 | Alekhine Defense | Modern Variation | Larsen-Haakert Variation | | |
| B04 | Alekhine Defense | Modern Variation | Schmid Variation | | |
| B05 | Alekhine Defense | Modern Variation | Alekhine Variation | | |
| B05 | Alekhine Defense | Modern Variation | Flohr Variation | | |
| B05 | Alekhine Defense | Modern Variation | Main Line | | |
| B05 | Alekhine Defense | Modern Variation | Panov Variation | | |
| B05 | Alekhine Defense | Modern Variation | Vitolins Attack | | |
| B06 | Modern Defense | | | | |
| B06 | Modern Defense | | | | |
| B06 | Modern Defense | Anti-Modern | | | |
| B06 | Modern Defense | Bishop Attack | | | |
| B06 | Modern Defense | Bishop Attack | Bücker Gambit | | |
| B06 | Modern Defense | Bishop Attack | Monkey's Bum | | |
| B06 | Modern Defense | Dunworthy Variation | | | |
| B06 | Modern Defense | Fianchetto Gambit | | | |
| B06 | Modern Defense | Gurgenidze Defense | | | |
| B06 | Modern Defense | Lizard Defense | Mittenberger Gambit | | |
| B06 | Modern Defense | Masur Gambit | | | |
| B06 | Modern Defense | Modern Pterodactyl | | | |
| B06 | Modern Defense | Mongredien Defense | with Nc3 | | |
| B06 | Modern Defense | Mongredien Defense | with Nf3 | | |
| B06 | Modern Defense | Norwegian Defense | | | |
| B06 | Modern Defense | Norwegian Defense | Norwegian Gambit | | |
| B06 | Modern Defense | Pseudo-Austrian Attack | | | |
| B06 | Modern Defense | Semi-Averbakh Variation | Pterodactyl Variation Declined | | |
| B06 | Modern Defense | Standard Defense | | | |
| B06 | Modern Defense | Standard Line | | | |
| B06 | Modern Defense | Three Pawns Attack | | | |
| B06 | Modern Defense | Two Knights Variation | | | |
| B06 | Modern Defense | Two Knights Variation | Suttles Variation | | |
| B06 | Modern Defense | Two Knights Variation | Suttles Variation | Tal Gambit | |
| B06 | Modern Defense | Westermann Gambit | | | |
| B06 | Modern Defense | Wind Gambit | | | |
| B06 | Pterodactyl Defense | Austrian | Austriadactylus Western | | |
| B06 | Pterodactyl Defense | Austrian | Grand Prix Pterodactyl | | |
| B06 | Pterodactyl Defense | Austrian | Pteranodon | | |
| B06 | Pterodactyl Defense | Central | Anhanguera | | |
| B06 | Pterodactyl Defense | Central | Benoni Quetzalcoatlus | | |
| B06 | Pterodactyl Defense | Central | Quetzalcoatlus Gambit | | |
| B06 | Pterodactyl Defense | Eastern | Anhanguera | | |
| B06 | Pterodactyl Defense | Eastern | Benoni | | |
| B06 | Pterodactyl Defense | Eastern | Benoni Pteranodon | | |
| B06 | Pterodactyl Defense | Eastern | Benoni Pterodactyl | | |
| B06 | Pterodactyl Defense | Eastern | Pteranodon | | |
| B06 | Pterodactyl Defense | Eastern | Pterodactyl | | |
| B06 | Pterodactyl Defense | Eastern | Rhamphorhynchus | | |
| B06 | Pterodactyl Defense | Fianchetto | King Pterodactyl | | |
| B06 | Pterodactyl Defense | Fianchetto | Rhamphorhynchus | | |
| B06 | Pterodactyl Defense | Sicilian | Quetzalcoatlus | | |
| B06 | Pterodactyl Defense | Sicilian | Siroccopteryx | | |
| B06 | Pterodactyl Defense | Western | Anhanguera | | |
| B06 | Rat Defense | Accelerated Gurgenidze | | | |
| B07 | Czech Defense | | | | |
| B07 | King's Pawn Game | Maróczy Defense | | | |
| B07 | Lion Defense | Anti-Philidor | | | |
| B07 | Lion Defense | Anti-Philidor | Lion's Cave | | |
| B07 | Lion Defense | Anti-Philidor | Lion's Cave | Lion Claw Gambit | |
| B07 | Lion Defense | Bayonet Attack | | | |
| B07 | Modern Defense | Geller's System | | | |
| B07 | Pirc Defense | | | | |
| B07 | Pirc Defense | 150 Attack | | | |
| B07 | Pirc Defense | 150 Attack | Inner Doll Defense | | |
| B07 | Pirc Defense | 150 Attack | Sveshnikov-Jansa Attack | | |
| B07 | Pirc Defense | Bayonet Attack | | | |
| B07 | Pirc Defense | Byrne Variation | | | |
| B07 | Pirc Defense | Chinese Variation | | | |
| B07 | Pirc Defense | Kholmov System | | | |
| B07 | Pirc Defense | Sveshnikov System | | | |
| B08 | Pirc Defense | Classical Variation | | | |
| B08 | Pirc Defense | Classical Variation | | | |
| B08 | Pirc Defense | Classical Variation | Quiet System | | |
| B08 | Pirc Defense | Classical Variation | Quiet System | Chigorin Line | |
| B08 | Pirc Defense | Classical Variation | Quiet System | Czech Defense | |
| B08 | Pirc Defense | Classical Variation | Quiet System | Parma Defense | |
| B08 | Pirc Defense | Classical Variation | Schlechter Variation | | |
| B09 | Pirc Defense | Austrian Attack | | | |
| B09 | Pirc Defense | Austrian Attack | | | |
| B09 | Pirc Defense | Austrian Attack | Dragon Formation | | |
| B09 | Pirc Defense | Austrian Attack | Kurajica Variation | | |
| B09 | Pirc Defense | Austrian Attack | Ljubojevic Variation | | |
| B09 | Pirc Defense | Austrian Attack | Unzicker Attack | | |
| B09 | Pirc Defense | Austrian Attack | Unzicker Attack | Bronstein Variation | |
| B09 | Pirc Defense | Austrian Attack | Weiss Variation | | |
| B10 | Caro-Kann Defense | | | | |
| B10 | Caro-Kann Defense | | | | |
| B10 | Caro-Kann Defense | | | | |
| B10 | Caro-Kann Defense | Accelerated Panov Attack | | | |
| B10 | Caro-Kann Defense | Accelerated Panov Attack | | | |
| B10 | Caro-Kann Defense | Accelerated Panov Attack | Modern Variation | | |
| B10 | Caro-Kann Defense | Accelerated Panov Attack | Open Variation | | |
| B10 | Caro-Kann Defense | Accelerated Panov Attack | Pseudo-Scandinavian | | |
| B10 | Caro-Kann Defense | Accelerated Panov Attack | Van Weersel Attack | | |
| B10 | Caro-Kann Defense | Apocalypse Attack | | | |
| B10 | Caro-Kann Defense | Breyer Variation | | | |
| B10 | Caro-Kann Defense | Breyer Variation | Stein Attack | | |
| B10 | Caro-Kann Defense | Endgame Offer | | | |
| B10 | Caro-Kann Defense | Endgame Variation | | | |
| B10 | Caro-Kann Defense | Euwe Attack | | | |
| B10 | Caro-Kann Defense | Goldman Variation | | | |
| B10 | Caro-Kann Defense | Hector Gambit | | | |
| B10 | Caro-Kann Defense | Hillbilly Attack | | | |
| B10 | Caro-Kann Defense | Hillbilly Attack | Schaeffer Gambit | | |
| B10 | Caro-Kann Defense | Labahn Attack | | | |
| B10 | Caro-Kann Defense | Labahn Attack | Double Gambit | | |
| B10 | Caro-Kann Defense | Labahn Attack | Polish Variation | | |
| B10 | Caro-Kann Defense | Scorpion-Horus Gambit | | | |
| B10 | Caro-Kann Defense | Spike Variation | | | |
| B10 | Caro-Kann Defense | Spike Variation | Scorpion-Grob Gambit | | |
| B10 | Caro-Kann Defense | St. Patrick's Attack | | | |
| B10 | Caro-Kann Defense | Toikkanen Gambit | | | |
| B10 | Caro-Kann Defense | Two Knights Attack | | | |
| B11 | Caro-Kann Defense | Two Knights Attack | Mindeno Variation | | |
| B11 | Caro-Kann Defense | Two Knights Attack | Mindeno Variation | Exchange Line | |
| B11 | Caro-Kann Defense | Two Knights Attack | Mindeno Variation | Retreat Line | |
| B12 | Caro-Kann Defense | | | | |
| B12 | Caro-Kann Defense | | | | |
| B12 | Caro-Kann Defense | Advance Variation | | | |
| B12 | Caro-Kann Defense | Advance Variation | Bayonet Attack | | |
| B12 | Caro-Kann Defense | Advance Variation | Botvinnik-Carls Defense | | |
| B12 | Caro-Kann Defense | Advance Variation | Bronstein Variation | | |
| B12 | Caro-Kann Defense | Advance Variation | Prins Attack | | |
| B12 | Caro-Kann Defense | Advance Variation | Short Variation | | |
| B12 | Caro-Kann Defense | Advance Variation | Tal Variation | | |
| B12 | Caro-Kann Defense | Advance Variation | Van der Wiel Attack | | |
| B12 | Caro-Kann Defense | Advance Variation | Van der Wiel Attack | | |
| B12 | Caro-Kann Defense | Advance Variation | Van der Wiel Attack | Dreyev Defense | |
| B12 | Caro-Kann Defense | Advance | Short Variation | | |
| B12 | Caro-Kann Defense | De Bruycker Defense | | | |
| B12 | Caro-Kann Defense | De Bruycker Defense | | | |
| B12 | Caro-Kann Defense | Edinburgh Variation | | | |
| B12 | Caro-Kann Defense | Maróczy Variation | | | |
| B12 | Caro-Kann Defense | Maróczy Variation | Maróczy Gambit | | |
| B12 | Caro-Kann Defense | Masi Variation | | | |
| B12 | Caro-Kann Defense | Massachusetts Defense | | | |
| B12 | Caro-Kann Defense | Mieses Attack | Landau Gambit | | |
| B12 | Caro-Kann Defense | Mieses Gambit | | | |
| B12 | Caro-Kann Defense | Modern Variation | | | |
| B12 | Caro-Kann Defense | Ulysses Gambit | | | |
| B13 | Caro-Kann Defense | Exchange Variation | | | |
| B13 | Caro-Kann Defense | Exchange Variation | | | |
| B13 | Caro-Kann Defense | Exchange Variation | Bulla Attack | | |
| B13 | Caro-Kann Defense | Exchange Variation | Rubinstein Variation | | |
| B13 | Caro-Kann Defense | Panov Attack | | | |
| B13 | Caro-Kann Defense | Panov Attack | | | |
| B13 | Caro-Kann Defense | Panov Attack | Gunderam Attack | | |
| B13 | Caro-Kann Defense | Panov Attack | Modern Defense | | |
| B13 | Caro-Kann Defense | Panov Attack | Modern Defense | Carlsbad Line | |
| B13 | Caro-Kann Defense | Panov Attack | Modern Defense | Czerniak Line | |
| B13 | Caro-Kann Defense | Panov Attack | Modern Defense | Mieses Line | |
| B13 | Caro-Kann Defense | Panov Attack | Modern Defense | Reifir-Spielmann Line | |
| B13 | Caro-Kann Defense | Panov-Botvinnik | Herzog Defense | | |
| B14 | Caro-Kann Defense | Panov Attack | | | |
| B14 | Caro-Kann Defense | Panov Attack | Fianchetto Defense | | |
| B14 | Caro-Kann Defense | Panov Attack | Fianchetto Defense | Fianchetto Gambit | |
| B14 | Caro-Kann Defense | Panov Attack | Main Line | | |
| B15 | Caro-Kann Defense | | | | |
| B15 | Caro-Kann Defense | | | | |
| B15 | Caro-Kann Defense | Alekhine Gambit | | | |
| B15 | Caro-Kann Defense | Alien Gambit | | | |
| B15 | Caro-Kann Defense | Campomanes Attack | | | |
| B15 | Caro-Kann Defense | Forgacs Variation | | | |
| B15 | Caro-Kann Defense | Gurgenidze Counterattack | | | |
| B15 | Caro-Kann Defense | Gurgenidze System | | | |
| B15 | Caro-Kann Defense | Main Line | | | |
| B15 | Caro-Kann Defense | Rasa-Studier Gambit | | | |
| B15 | Caro-Kann Defense | Tartakower Variation | | | |
| B15 | Caro-Kann Defense | von Hennig Gambit | | | |
| B16 | Caro-Kann Defense | Bronstein-Larsen Variation | | | |
| B16 | Caro-Kann Defense | Finnish Variation | | | |
| B17 | Caro-Kann Defense | Karpov Variation | | | |
| B17 | Caro-Kann Defense | Karpov Variation | Modern Main Line | | |
| B17 | Caro-Kann Defense | Karpov Variation | Modern Variation | | |
| B17 | Caro-Kann Defense | Karpov Variation | Modern Variation | Ivanchuk Defense | |
| B17 | Caro-Kann Defense | Karpov Variation | Modern Variation | Kasparov Attack | |
| B17 | Caro-Kann Defense | Karpov Variation | Smyslov Variation | | |
| B17 | Caro-Kann Defense | Karpov Variation | Smyslov Variation | Main Line | |
| B17 | Caro-Kann Defense | Karpov Variation | Tiviakov-Fischer Attack | | |
| B18 | Caro-Kann Defense | Classical Variation | | | |
| B18 | Caro-Kann Defense | Classical Variation | Flohr Variation | | |
| B18 | Caro-Kann Defense | Classical Variation | Main Line | | |
| B18 | Caro-Kann Defense | Classical Variation | Maróczy Attack | | |
| B19 | Caro-Kann Defense | Classical Variation | | | |
| B19 | Caro-Kann Defense | Classical Variation | Lobron System | | |
| B19 | Caro-Kann Defense | Classical Variation | Seirawan Variation | | |
| B19 | Caro-Kann Defense | Classical Variation | Spassky Variation | | |
| B20 | Sicilian Defense | | | | |
| B20 | Sicilian Defense | Amazon Attack | | | |
| B20 | Sicilian Defense | Big Clamp Formation | | | |
| B20 | Sicilian Defense | Bowdler Attack | | | |
| B20 | Sicilian Defense | Brick Variation | | | |
| B20 | Sicilian Defense | Euwe Attack | Prins Gambit | | |
| B20 | Sicilian Defense | Gloria Variation | | | |
| B20 | Sicilian Defense | Grob Variation | | | |
| B20 | Sicilian Defense | Keres Variation | | | |
| B20 | Sicilian Defense | King David's Opening | | | |
| B20 | Sicilian Defense | Kronberger Variation | | | |
| B20 | Sicilian Defense | Kronberger Variation | Nemeth Gambit | | |
| B20 | Sicilian Defense | Lasker-Dunne Attack | | | |
| B20 | Sicilian Defense | Mengarini Variation | | | |
| B20 | Sicilian Defense | Myers Attack | with a4 | | |
| B20 | Sicilian Defense | Myers Attack | with h4 | | |
| B20 | Sicilian Defense | Snyder Variation | | | |
| B20 | Sicilian Defense | Snyder Variation | Queen Fianchetto Variation | | |
| B20 | Sicilian Defense | Staunton-Cochrane Variation | | | |
| B20 | Sicilian Defense | Wing Gambit | | | |
| B20 | Sicilian Defense | Wing Gambit | Abrahams Variation | | |
| B20 | Sicilian Defense | Wing Gambit | Carlsbad Variation | | |
| B20 | Sicilian Defense | Wing Gambit | Marienbad Variation | | |
| B20 | Sicilian Defense | Wing Gambit | Marshall Variation | | |
| B20 | Sicilian Defense | Wing Gambit | Nanu Gambit | | |
| B20 | Sicilian Defense | Wing Gambit | Romanian Defense | | |
| B20 | Sicilian Defense | Wing Gambit | Santasiere Variation | | |
| B21 | Bird Opening | Dutch Variation | Batavo Gambit | | |
| B21 | Sicilian Defense | Coles Sicilian Gambit | | | |
| B21 | Sicilian Defense | Halasz Gambit | | | |
| B21 | Sicilian Defense | McDonnell Attack | | | |
| B21 | Sicilian Defense | McDonnell Attack | Tal Gambit | | |
| B21 | Sicilian Defense | Morphy Gambit | | | |
| B21 | Sicilian Defense | Morphy Gambit | Andreaschek Gambit | | |
| B21 | Sicilian Defense | Smith-Morra Gambit | | | |
| B21 | Sicilian Defense | Smith-Morra Gambit | | | |
| B21 | Sicilian Defense | Smith-Morra Gambit Accepted | | | |
| B21 | Sicilian Defense | Smith-Morra Gambit Accepted | Chicago Defense | | |
| B21 | Sicilian Defense | Smith-Morra Gambit Accepted | Classical Formation | | |
| B21 | Sicilian Defense | Smith-Morra Gambit Accepted | Fianchetto Defense | | |
| B21 | Sicilian Defense | Smith-Morra Gambit Accepted | Finegold Defense | | |
| B21 | Sicilian Defense | Smith-Morra Gambit Accepted | Kan Formation | | |
| B21 | Sicilian Defense | Smith-Morra Gambit Accepted | Larsen Defense | | |
| B21 | Sicilian Defense | Smith-Morra Gambit Accepted | Morphy Defense | | |
| B21 | Sicilian Defense | Smith-Morra Gambit Accepted | Morphy Defense Deferred | | |
| B21 | Sicilian Defense | Smith-Morra Gambit Accepted | Paulsen Formation | | |
| B21 | Sicilian Defense | Smith-Morra Gambit Accepted | Pin Defense | | |
| B21 | Sicilian Defense | Smith-Morra Gambit Accepted | Scheveningen Formation | | |
| B21 | Sicilian Defense | Smith-Morra Gambit Accepted | Siberian Variation | | |
| B21 | Sicilian Defense | Smith-Morra Gambit Accepted | Siberian Variation | Siberian Trap | |
| B21 | Sicilian Defense | Smith-Morra Gambit Accepted | Sozin Formation | | |
| B21 | Sicilian Defense | Smith-Morra Gambit Accepted | Taimanov Formation | | |
| B21 | Sicilian Defense | Smith-Morra Gambit Declined | Alapin Formation | | |
| B21 | Sicilian Defense | Smith-Morra Gambit Declined | Center Formation | | |
| B21 | Sicilian Defense | Smith-Morra Gambit Declined | Dubois Variation | | |
| B21 | Sicilian Defense | Smith-Morra Gambit Declined | Push Variation | | |
| B21 | Sicilian Defense | Smith-Morra Gambit Declined | Scandinavian Formation | | |
| B21 | Sicilian Defense | Smith-Morra Gambit Declined | Wing Formation | | |
| B21 | Sicilian Defense | Smith-Morra Gambit | Chicago Defense | | |
| B21 | Sicilian Defense | Smith-Morra Gambit | Danish Variation | | |
| B22 | Sicilian Defense | Alapin Variation | | | |
| B22 | Sicilian Defense | Alapin Variation | Barmen Defense | | |
| B22 | Sicilian Defense | Alapin Variation | Barmen Defense | Central Exchange | |
| B22 | Sicilian Defense | Alapin Variation | Barmen Defense | Endgame Variation | |
| B22 | Sicilian Defense | Alapin Variation | Barmen Defense | Milner-Barry Attack | |
| B22 | Sicilian Defense | Alapin Variation | Barmen Defense | Modern Line | |
| B22 | Sicilian Defense | Alapin Variation | Smith-Morra Declined | | |
| B22 | Sicilian Defense | Alapin Variation | Stoltz Attack | | |
| B22 | Sicilian Defense | Alapin Variation | Stoltz Attack | Ivanchuk Line | |
| B22 | Sicilian Defense | Heidenfeld Variation | | | |
| B23 | Sicilian Defense | Closed | | | |
| B23 | Sicilian Defense | Closed | | | |
| B23 | Sicilian Defense | Closed | | | |
| B23 | Sicilian Defense | Closed | Chameleon Variation | | |
| B23 | Sicilian Defense | Closed | Grob Attack | | |
| B23 | Sicilian Defense | Closed | Korchnoi Defense | | |
| B23 | Sicilian Defense | Closed | Traditional | | |
| B23 | Sicilian Defense | Grand Prix Attack | | | |
| B23 | Sicilian Defense | Grand Prix Attack | Schofman Variation | | |
| B24 | Sicilian Defense | Closed | | | |
| B24 | Sicilian Defense | Closed | | | |
| B24 | Sicilian Defense | Closed | Fianchetto Variation | | |
| B24 | Sicilian Defense | Closed | Smyslov Variation | | |
| B25 | Sicilian Defense | Closed | | | |
| B25 | Sicilian Defense | Closed | | | |
| B25 | Sicilian Defense | Closed | Botvinnik Defense | Edge Variation | |
| B25 | Sicilian Defense | Closed | Botvinnik Defense | with Nge2 | |
| B25 | Sicilian Defense | Closed | Botvinnik Defense | with f4 | |
| B26 | Sicilian Defense | Closed | | | |
| B27 | Modern Defense | Pterodactyl Variation | | | |
| B27 | Pterodactyl Defense | Sicilian | Anhanguera | | |
| B27 | Pterodactyl Defense | Sicilian | Benoni Gambit | | |
| B27 | Pterodactyl Defense | Sicilian | Pteranodon | | |
| B27 | Pterodactyl Defense | Sicilian | Rhamphorhynchus | | |
| B27 | Pterodactyl Defense | Sicilian | Unpin | | |
| B27 | Pterodactyl Defense | Western | Pterodactyl | | |
| B27 | Pterodactyl Defense | Western | Rhamphorhynchus | | |
| B27 | Sicilian Defense | | | | |
| B27 | Sicilian Defense | Acton Extension | | | |
| B27 | Sicilian Defense | Brussels Gambit | | | |
| B27 | Sicilian Defense | Bücker Variation | | | |
| B27 | Sicilian Defense | Double-Dutch Gambit | | | |
| B27 | Sicilian Defense | Frederico Variation | | | |
| B27 | Sicilian Defense | Hyperaccelerated Dragon | | | |
| B27 | Sicilian Defense | Hyperaccelerated Fianchetto | | | |
| B27 | Sicilian Defense | Hyperaccelerated Pterodactyl | | | |
| B27 | Sicilian Defense | Hyperaccelerated Pterodactyl | Exchange Variation | | |
| B27 | Sicilian Defense | Jalalabad Variation | | | |
| B27 | Sicilian Defense | Katalimov Variation | | | |
| B27 | Sicilian Defense | Mongoose Variation | | | |
| B27 | Sicilian Defense | Polish Gambit | | | |
| B27 | Sicilian Defense | Quinteros Variation | | | |
| B28 | Sicilian Defense | O'Kelly Variation | | | |
| B28 | Sicilian Defense | O'Kelly Variation | Aronin System | | |
| B28 | Sicilian Defense | O'Kelly Variation | Kieseritzky System | | |
| B28 | Sicilian Defense | O'Kelly Variation | Maróczy Bind | | |
| B28 | Sicilian Defense | O'Kelly Variation | Maróczy Bind | Paulsen Line | |
| B28 | Sicilian Defense | O'Kelly Variation | Maróczy Bind | Robatsch Line | |
| B28 | Sicilian Defense | O'Kelly Variation | Normal System | | |
| B28 | Sicilian Defense | O'Kelly Variation | Normal System | Cortlever Gambit | |
| B28 | Sicilian Defense | O'Kelly Variation | Normal System | Smith-Morra Line | |
| B28 | Sicilian Defense | O'Kelly Variation | Normal System | Taimanov Line | |
| B28 | Sicilian Defense | O'Kelly Variation | Normal System | Zagorovsky Line | |
| B28 | Sicilian Defense | O'Kelly Variation | Quiet System | | |
| B28 | Sicilian Defense | O'Kelly Variation | Réti System | | |
| B28 | Sicilian Defense | O'Kelly Variation | Venice System | | |
| B28 | Sicilian Defense | O'Kelly Variation | Venice System | Barcza Line | |
| B28 | Sicilian Defense | O'Kelly Variation | Venice System | Gambit Line | |
| B28 | Sicilian Defense | O'Kelly Variation | Venice System | Ljubojevic Line | |
| B28 | Sicilian Defense | O'Kelly Variation | Venice System | Steiner Line | |
| B28 | Sicilian Defense | O'Kelly Variation | Wing Gambit | | |
| B28 | Sicilian Defense | O'Kelly Variation | Yerevan System | | |
| B29 | Sicilian Defense | Nimzowitsch Variation | | | |
| B29 | Sicilian Defense | Nimzowitsch Variation | Advance Variation | | |
| B29 | Sicilian Defense | Nimzowitsch Variation | Closed Variation | | |
| B29 | Sicilian Defense | Nimzowitsch Variation | Exchange Variation | | |
| B29 | Sicilian Defense | Nimzowitsch Variation | Main Line | | |
| B30 | Sicilian Defense | Closed | Anti-Sveshnikov Variation | Kharlov-Kramnik Line | |
| B30 | Sicilian Defense | Closed | Anti-Sveshnikov Variation | with Nf6 | |
| B30 | Sicilian Defense | Closed | Anti-Sveshnikov Variation | with d6 | |
| B30 | Sicilian Defense | Nyezhmetdinov-Rossolimo Attack | | | |
| B30 | Sicilian Defense | Nyezhmetdinov-Rossolimo Attack | San Francisco Gambit | | |
| B30 | Sicilian Defense | Old Sicilian | | | |
| B30 | Sicilian Defense | Portsmouth Gambit | | | |
| B30 | Sicilian Defense | Rossolimo Variation | Brooklyn Retreat Defense | | |
| B31 | Sicilian Defense | Nyezhmetdinov-Rossolimo Attack | Fianchetto Variation | | |
| B31 | Sicilian Defense | Nyezhmetdinov-Rossolimo Attack | Fianchetto Variation | Gufeld Gambit | |
| B31 | Sicilian Defense | Nyezhmetdinov-Rossolimo Attack | Fianchetto Variation | Lutikov Gambit | |
| C02 | French Defense | Advance Variation | | | |
| B31 | Sicilian Defense | Nyezhmetdinov-Rossolimo Attack | Fianchetto Variation | Totsky Attack | |
| B31 | Sicilian Defense | Nyezhmetdinov-Rossolimo Attack | Gurgenidze Variation | | |
| B32 | Sicilian Defense | Accelerated Dragon | | | |
| B32 | Sicilian Defense | Flohr Variation | | | |
| B32 | Sicilian Defense | Franco-Sicilian Variation | | | |
| B32 | Sicilian Defense | Godiva Variation | | | |
| B32 | Sicilian Defense | Kalashnikov Variation | | | |
| B32 | Sicilian Defense | Löwenthal Variation | | | |
| B32 | Sicilian Defense | Nimzo-American Variation | | | |
| B32 | Sicilian Defense | O'Kelly Variation | Maróczy Bind | Geller Line | |
| B32 | Sicilian Defense | Open | | | |
| B32 | Sicilian Defense | Open | | | |
| B32 | Sicilian Defense | Open | | | |
| B33 | Sicilian Defense | Four Knights Variation | Cobra Variation | | |
| B33 | Sicilian Defense | Lasker-Pelikan Variation | | | |
| B33 | Sicilian Defense | Lasker-Pelikan Variation | Bird Variation | | |
| B33 | Sicilian Defense | Lasker-Pelikan Variation | Exchange Variation | | |
| B33 | Sicilian Defense | Lasker-Pelikan Variation | Retreat Variation | | |
| B33 | Sicilian Defense | Lasker-Pelikan Variation | Schlechter Variation | | |
| B33 | Sicilian Defense | Lasker-Pelikan Variation | Sveshnikov Variation | | |
| B33 | Sicilian Defense | Lasker-Pelikan Variation | Sveshnikov Variation | | |
| B33 | Sicilian Defense | Lasker-Pelikan Variation | Sveshnikov Variation | Chelyabinsk Variation | |
| B33 | Sicilian Defense | Lasker-Pelikan Variation | Sveshnikov Variation | Novosibirsk Variation | |
| B33 | Sicilian Defense | Lasker-Pelikan Variation | Sveshnikov Variation | Peresypkin's Sacrifice | |
| B95 | Sicilian Defense | Najdorf Variation | | | |
| B34 | Sicilian Defense | Accelerated Dragon | Exchange Variation | | |
| B34 | Sicilian Defense | Accelerated Dragon | Modern Variation | | |
| B35 | Sicilian Defense | Accelerated Dragon | Modern Bc4 Variation | | |
| B35 | Sicilian Defense | Dragon Variation | Modern Bc4 Variation | | |
| B36 | Sicilian Defense | Accelerated Dragon | Maróczy Bind | | |
| B36 | Sicilian Defense | Accelerated Dragon | Maróczy Bind | Gurgenidze Variation | |
| B37 | Sicilian Defense | Accelerated Dragon | Maróczy Bind | | |
| B37 | Sicilian Defense | Accelerated Dragon | Simagin Variation | | |
| B38 | Sicilian Defense | Accelerated Dragon | Maróczy Bind | | |
| B39 | Sicilian Defense | Accelerated Dragon | Maróczy Bind | Breyer Variation | |
| B40 | Sicilian Defense | Alapin Variation | Sherzer Variation | | |
| B40 | Sicilian Defense | Delayed Alapin Variation | with e6 | | |
| B40 | Sicilian Defense | Drazic Variation | | | |
| B40 | Sicilian Defense | Four Knights Variation | | | |
| B40 | Sicilian Defense | Four Knights Variation | Exchange Variation | | |
| B40 | Sicilian Defense | French Variation | | | |
| B40 | Sicilian Defense | French Variation | Normal | | |
| B40 | Sicilian Defense | French Variation | Open | | |
| B40 | Sicilian Defense | French Variation | Westerinen Attack | | |
| B40 | Sicilian Defense | Gaw-Paw Variation | | | |
| B40 | Sicilian Defense | Kan Variation | Wing Attack | Fianchetto Variation | |
| B40 | Sicilian Defense | Kramnik Variation | | | |
| B40 | Sicilian Defense | Kveinis Variation | | | |
| B40 | Sicilian Defense | Marshall Counterattack | | | |
| B40 | Sicilian Defense | Paulsen-Basman Defense | | | |
| B40 | Sicilian Defense | Pin Variation | | | |
| B40 | Sicilian Defense | Pin Variation | Jaffe Variation | | |
| B40 | Sicilian Defense | Pin Variation | Koch Variation | | |
| B40 | Sicilian Defense | Smith-Morra Gambit Deferred | | | |
| B40 | Sicilian Defense | Wing Gambit Deferred | | | |
| B41 | Sicilian Defense | Kan Variation | | | |
| B41 | Sicilian Defense | Kan Variation | Maróczy Bind | Bronstein Variation | |
| B41 | Sicilian Defense | Kan Variation | Maróczy Bind | Bronstein Variation | |
| B41 | Sicilian Defense | Kan Variation | Maróczy Bind | Hedgehog Variation | |
| B41 | Sicilian Defense | Kan Variation | Maróczy Bind | Réti Variation | |
| B42 | Sicilian Defense | Kan Variation | Gipslis Variation | | |
| B42 | Sicilian Defense | Kan Variation | Modern Variation | | |
| B42 | Sicilian Defense | Kan Variation | Polugaevsky Variation | | |
| B42 | Sicilian Defense | Kan Variation | Swiss Cheese Variation | | |
| B43 | Sicilian Defense | Kan Variation | Knight Variation | | |
| B43 | Sicilian Defense | Kan Variation | Wing Attack | | |
| B43 | Sicilian Defense | Kan Variation | Wing Attack | Christiansen's Dream | |
| B43 | Sicilian Defense | Kan Variation | Wing Attack | Spraggett Attack | |
| B44 | Sicilian Defense | Taimanov Variation | | | |
| B44 | Sicilian Defense | Taimanov Variation | Gary Gambit | | |
| B44 | Sicilian Defense | Taimanov Variation | Modern Line | | |
| B44 | Sicilian Defense | Taimanov Variation | Szén Variation | | |
| B45 | Sicilian Defense | Taimanov Variation | American Attack | | |
| B45 | Sicilian Defense | Taimanov Variation | Normal Variation | | |
| B46 | Sicilian Defense | Taimanov Variation | | | |
| B47 | Sicilian Defense | Taimanov Variation | Bastrikov Variation | | |
| B47 | Sicilian Defense | Taimanov Variation | Bastrikov Variation | Ponomariov Gambit | |
| B48 | Sicilian Defense | Taimanov Variation | Bastrikov Variation | English Attack | |
| B49 | Sicilian Defense | Taimanov Variation | Bastrikov Variation | | |
| B50 | Sicilian Defense | | | | |
| B50 | Sicilian Defense | | | | |
| B50 | Sicilian Defense | Delayed Alapin Variation | Basman-Palatnik Double Gambit | | |
| B50 | Sicilian Defense | Delayed Alapin Variation | Basman-Palatnik Gambit | | |
| B50 | Sicilian Defense | Delayed Alapin Variation | with d6 | | |
| B50 | Sicilian Defense | Kopec System | | | |
| B50 | Sicilian Defense | Kotov Gambit | | | |
| B50 | Sicilian Defense | Modern Variations | | | |
| B50 | Sicilian Defense | Modern Variations | Anti-Qxd4 Move Order | | |
| B50 | Sicilian Defense | Modern Variations | Anti-Qxd4 Move Order Accepted | | |
| B50 | Sicilian Defense | Modern Variations | Tartakower | | |
| B50 | Sicilian Defense | Wing Gambit | Deferred Variation | | |
| B51 | Sicilian Defense | Moscow Variation | | | |
| B51 | Sicilian Defense | Moscow Variation | Dorfman Gambit | | |
| B51 | Sicilian Defense | Moscow Variation | Moscow Gambit | | |
| B52 | Sicilian Defense | Moscow Variation | Haag Gambit | | |
| B52 | Sicilian Defense | Moscow Variation | Main Line | | |
| B52 | Sicilian Defense | Moscow Variation | Sokolsky Variation | | |
| B53 | Sicilian Defense | Chekhover Variation | | | |
| B53 | Sicilian Defense | Chekhover Variation | Zaitsev Defense | | |
| B54 | Sicilian Defense | Dragon Variation | Accelerated Dragon | | |
| B54 | Sicilian Defense | Modern Variations | Ginsberg Gambit | | |
| B54 | Sicilian Defense | Modern Variations | Main Line | | |
| B54 | Sicilian Defense | Prins Variation | | | |
| B55 | Sicilian Defense | Prins Variation | Venice Attack | | |
| B56 | Sicilian Defense | Classical Variation | | | |
| B56 | Sicilian Defense | Classical Variation | Fianchetto Variation | | |
| B56 | Sicilian Defense | Kupreichik Variation | | | |
| B56 | Sicilian Defense | Spielmann Variation | | | |
| B56 | Sicilian Defense | Venice Attack | | | |
| B56 | Sicilian Defense | Yates Variation | | | |
| B57 | Sicilian Defense | Classical Variation | Anti-Sozin Variation | | |
| B57 | Sicilian Defense | Classical Variation | Sozin Attack | | |
| B57 | Sicilian Defense | Magnus Smith Trap | | | |
| B58 | Sicilian Defense | Boleslavsky Variation | | | |
| B58 | Sicilian Defense | Boleslavsky Variation | Louma Variation | | |
| B58 | Sicilian Defense | Classical Variation | | | |
| B58 | Sicilian Defense | Classical Variation | Dragon Transfer | | |
| B59 | Sicilian Defense | Boleslavsky Variation | | | |
| B60 | Sicilian Defense | Richter-Rauzer Variation | | | |
| B60 | Sicilian Defense | Richter-Rauzer Variation | Dragon Variation | | |
| B60 | Sicilian Defense | Richter-Rauzer Variation | Modern Variation | | |
| B61 | Sicilian Defense | Richter-Rauzer Variation | Modern Variation | | |
| B62 | Sicilian Defense | Richter-Rauzer Variation | | | |
| B62 | Sicilian Defense | Richter-Rauzer Variation | | | |
| B62 | Sicilian Defense | Richter-Rauzer Variation | Exchange Variation | | |
| B62 | Sicilian Defense | Richter-Rauzer Variation | Podebrady Variation | | |
| B62 | Sicilian Defense | Richter-Rauzer Variation | Vitolins Variation | | |
| B63 | Sicilian Defense | Richter-Rauzer Variation | Classical Variation | | |
| B63 | Sicilian Defense | Richter-Rauzer Variation | Classical Variation | Kantscher Line | |
| B63 | Sicilian Defense | Richter-Rauzer Variation | Ivanov Variation | | |
| B63 | Sicilian Defense | Richter-Rauzer Variation | Traditional Variation | | |
| B64 | Sicilian Defense | Richter-Rauzer Variation | Classical Variation | | |
| B64 | Sicilian Defense | Richter-Rauzer Variation | Classical Variation | | |
| B65 | Sicilian Defense | Richter-Rauzer Variation | Classical Variation | | |
| B65 | Sicilian Defense | Richter-Rauzer Variation | Rauzer Attack | | |
| B66 | Sicilian Defense | Richter-Rauzer Variation | Neo-Modern Variation | Early Deviations | |
| B67 | Sicilian Defense | Richter-Rauzer Variation | Neo-Modern Variation | | |
| B68 | Sicilian Defense | Richter-Rauzer Variation | Neo-Modern Variation | | |
| B69 | Sicilian Defense | Richter-Rauzer Variation | Neo-Modern Variation | Nyezhmetdinov Attack | |
| B70 | Sicilian Defense | Dragon Variation | | | |
| B70 | Sicilian Defense | Dragon Variation | Classical Variation | | |
| B70 | Sicilian Defense | Dragon Variation | Fianchetto Variation | | |
| B71 | Sicilian Defense | Dragon Variation | Levenfish Variation | | |
| B71 | Sicilian Defense | Dragon Variation | Levenfish Variation | Main Line | |
| B72 | Sicilian Defense | Dragon Variation | | | |
| B72 | Sicilian Defense | Dragon Variation | Classical Variation | | |
| B72 | Sicilian Defense | Dragon Variation | Classical Variation | | |
| B72 | Sicilian Defense | Dragon Variation | Classical Variation | | |
| B72 | Sicilian Defense | Dragon Variation | Classical Variation | Amsterdam Variation | |
| B72 | Sicilian Defense | Dragon Variation | Classical Variation | Grigoriev Variation | |
| B73 | Sicilian Defense | Dragon Variation | Classical Variation | | |
| B73 | Sicilian Defense | Dragon Variation | Classical Variation | Battery Variation | |
| B73 | Sicilian Defense | Dragon Variation | Classical Variation | Zollner Gambit | |
| B74 | Sicilian Defense | Dragon Variation | Classical Variation | Alekhine Line | |
| B74 | Sicilian Defense | Dragon Variation | Classical Variation | Bernard Defense | |
| B74 | Sicilian Defense | Dragon Variation | Classical Variation | Maróczy Line | |
| B74 | Sicilian Defense | Dragon Variation | Classical Variation | Normal Line | |
| B74 | Sicilian Defense | Dragon Variation | Classical Variation | Spielmann Variation | |
| B74 | Sicilian Defense | Dragon Variation | Classical Variation | Stockholm Attack | |
| B74 | Sicilian Defense | Dragon Variation | Classical Variation | Tartakower Line | |
| B75 | Sicilian Defense | Dragon Variation | Yugoslav Attack | Belezky Line | |
| B75 | Sicilian Defense | Dragon Variation | Yugoslav Attack | Early Deviations | |
| B76 | Sicilian Defense | Dragon Variation | Yugoslav Attack | | |
| B76 | Sicilian Defense | Dragon Variation | Yugoslav Attack | | |
| B76 | Sicilian Defense | Dragon Variation | Yugoslav Attack | Modern Line | |
| B76 | Sicilian Defense | Dragon Variation | Yugoslav Attack | Panov Variation | |
| B77 | Sicilian Defense | Dragon Variation | Yugoslav Attack | | |
| B77 | Sicilian Defense | Dragon Variation | Yugoslav Attack | Byrne Variation | |
| B77 | Sicilian Defense | Dragon Variation | Yugoslav Attack | Czerniak Variation | |
| B77 | Sicilian Defense | Dragon Variation | Yugoslav Attack | Main Line | |
| B77 | Sicilian Defense | Dragon Variation | Yugoslav Attack | Sosonko Variation | |
| B78 | Sicilian Defense | Dragon Variation | Yugoslav Attack | | |
| B78 | Sicilian Defense | Dragon Variation | Yugoslav Attack | Old Line | |
| B79 | Sicilian Defense | Dragon Variation | Yugoslav Attack | | |
| B79 | Sicilian Defense | Dragon Variation | Yugoslav Attack | Soltis Variation | |
| B80 | Sicilian Defense | Scheveningen Variation | | | |
| B80 | Sicilian Defense | Scheveningen Variation | English Attack | with Qd2 | |
| B80 | Sicilian Defense | Scheveningen Variation | Fianchetto Variation | | |
| B80 | Sicilian Defense | Scheveningen Variation | Vitolins Variation | | |
| B81 | Sicilian Defense | Scheveningen Variation | Keres Attack | | |
| B82 | Sicilian Defense | Scheveningen Variation | Matanovic Attack | | |
| B82 | Sicilian Defense | Scheveningen Variation | Tal Variation | | |
| B83 | Sicilian Defense | Scheveningen Variation | Classical Variation | | |
| B83 | Sicilian Defense | Scheveningen Variation | Modern Variation | | |
| B83 | Sicilian Defense | Scheveningen Variation | Modern Variation | | |
| B83 | Sicilian Defense | Scheveningen Variation | Modern Variation | | |
| B84 | Sicilian Defense | Najdorf Variation | Scheveningen Variation | | |
| B84 | Sicilian Defense | Scheveningen Variation | Classical Variation | | |
| B84 | Sicilian Defense | Scheveningen Variation | Classical Variation | | |
| B85 | Sicilian Defense | Scheveningen Variation | Classical Main Line | | |
| B85 | Sicilian Defense | Scheveningen Variation | Classical Variation | Paulsen Variation | |
| B85 | Sicilian Defense | Scheveningen Variation | Classical Variation | Paulsen Variation | |
| B85 | Sicilian Defense | Scheveningen Variation | Classical Variation | Paulsen Variation | |
| B86 | Sicilian Defense | Sozin Attack | | | |
| B87 | Sicilian Defense | Sozin Attack | Flank Variation | | |
| B88 | Sicilian Defense | Sozin Attack | Fischer Variation | | |
| B88 | Sicilian Defense | Sozin Attack | Leonhardt Variation | | |
| B89 | Sicilian Defense | Sozin Attack | Main Line | | |
| B89 | Sicilian Defense | Sozin Attack | Main Line | Sherbakov Variation | |
| B89 | Sicilian Defense | Velimirovic Attack | | | |
| B90 | Sicilian Defense | Najdorf Variation | | | |
| B90 | Sicilian Defense | Najdorf Variation | Adams Attack | | |
| B90 | Sicilian Defense | Najdorf Variation | Dekker Gambit | | |
| B90 | Sicilian Defense | Najdorf Variation | English Attack | | |
| B90 | Sicilian Defense | Najdorf Variation | English Attack | Anti-English | |
| B90 | Sicilian Defense | Najdorf Variation | Freak Attack | | |
| B90 | Sicilian Defense | Najdorf Variation | Lipnitsky Attack | | |
| B90 | Sicilian Defense | Scheveningen Variation | Delayed Keres Attack | | |
| B90 | Sicilian Defense | Scheveningen Variation | Delayed Keres Attack | Perenyi Gambit | |
| B90 | Sicilian Defense | Scheveningen Variation | English Attack | with f3 | |
| B91 | Sicilian Defense | Najdorf Variation | Zagreb Variation | | |
| B92 | Sicilian Defense | Najdorf Variation | Opocensky Variation | | |
| B92 | Sicilian Defense | Najdorf Variation | Opocensky Variation | | |
| B92 | Sicilian Defense | Najdorf Variation | Opocensky Variation | Modern Line | |
| B92 | Sicilian Defense | Najdorf Variation | Opocensky Variation | Traditional Line | |
| B93 | Sicilian Defense | Najdorf Variation | Amsterdam Variation | | |
| B94 | Sicilian Defense | Najdorf Variation | | | |
| B94 | Sicilian Defense | Najdorf Variation | Ivkov Variation | | |
| B96 | Sicilian Defense | Najdorf Variation | | | |
| B96 | Sicilian Defense | Najdorf Variation | Neo-Classical Defense | | |
| B96 | Sicilian Defense | Najdorf Variation | Polugaevsky Variation | | |
| B96 | Sicilian Defense | Najdorf Variation | Polugaevsky Variation | Simagin Line | |
| B97 | Sicilian Defense | Najdorf Variation | Poisoned Pawn Accepted | | |
| B97 | Sicilian Defense | Najdorf Variation | Poisoned Pawn Variation | | |
| B98 | Sicilian Defense | Najdorf Variation | | | |
| B98 | Sicilian Defense | Najdorf Variation | Browne Variation | | |
| B98 | Sicilian Defense | Najdorf Variation | Goteborg Variation | | |
| B98 | Sicilian Defense | Najdorf Variation | Traditional Line | | |
| B99 | Sicilian Defense | Najdorf Variation | Main Line | | |
| C00 | French Defense | | | | |
| C00 | French Defense | | | | |
| C00 | French Defense | Alapin Gambit | | | |
| C00 | French Defense | Baeuerle Gambit | | | |
| C00 | French Defense | Banzai-Leong Gambit | | | |
| C00 | French Defense | Banzai-Leong Gambit | Pinova Gambit | | |
| C00 | French Defense | Bird Invitation | | | |
| C00 | French Defense | Carlson Gambit | | | |
| C00 | French Defense | Chigorin Variation | | | |
| C00 | French Defense | Diemer-Duhm Gambit | | | |
| C00 | French Defense | Diemer-Duhm Gambit Accepted | | | |
| C00 | French Defense | Franco-Hiva Gambit | | | |
| C00 | French Defense | Franco-Hiva Gambit Accepted | | | |
| C00 | French Defense | Franco-Sicilian Defense | | | |
| C00 | French Defense | Hoffmann Gambit | | | |
| C00 | French Defense | Horwitz Attack | | | |
| C00 | French Defense | Horwitz Attack | Papa-Ticulat Gambit | | |
| C00 | French Defense | King's Indian Attack | | | |
| C00 | French Defense | King's Indian Attack | Franco-Hiva Gambit | | |
| C00 | French Defense | Knight Variation | | | |
| C00 | French Defense | Knight Variation | Franco-Hiva Gambit | | |
| C00 | French Defense | La Bourdonnais Variation | | | |
| C00 | French Defense | La Bourdonnais Variation | Reuter Gambit | | |
| C00 | French Defense | Mediterranean Defense | | | |
| C00 | French Defense | Morphy Gambit | | | |
| C00 | French Defense | Normal Variation | | | |
| C00 | French Defense | Orthoschnapp Gambit | | | |
| C00 | French Defense | Pelikan Variation | | | |
| C00 | French Defense | Perseus Gambit | | | |
| C00 | French Defense | Queen's Knight | | | |
| C00 | French Defense | Reversed Philidor Formation | | | |
| C00 | French Defense | Réti-Spielmann Attack | | | |
| C00 | French Defense | Schlechter Variation | | | |
| C00 | French Defense | St. George Defense | | | |
| C00 | French Defense | St. George Defense | Sanky-George Gambit | | |
| C00 | French Defense | St. George Defense | St. George Gambit | | |
| C00 | French Defense | St. George Defense | Three Pawn Attack | | |
| C00 | French Defense | St. George Defense | Traditional Line | | |
| C00 | French Defense | Steiner Variation | | | |
| C00 | French Defense | Steinitz Attack | | | |
| C00 | French Defense | Two Knights Variation | | | |
| C00 | French Defense | Wing Gambit | | | |
| C00 | Rat Defense | Small Center Defense | | | |
| C01 | French Defense | Exchange Variation | | | |
| C01 | French Defense | Exchange Variation | Bogoljubow Variation | | |
| C01 | French Defense | Exchange Variation | Monte Carlo Variation | | |
| C01 | French Defense | Exchange Variation | Svenonius Variation | | |
| C02 | French Defense | Advance Variation | | | |
| C02 | French Defense | Advance Variation | | | |
| C02 | French Defense | Advance Variation | | | |
| C02 | French Defense | Advance Variation | Euwe Variation | | |
| C02 | French Defense | Advance Variation | Extended Bishop Swap | | |
| C02 | French Defense | Advance Variation | Frenkel Gambit | | |
| C02 | French Defense | Advance Variation | Lputian Variation | | |
| C02 | French Defense | Advance Variation | Main Line | | |
| C02 | French Defense | Advance Variation | Milner-Barry Gambit | | |
| C02 | French Defense | Advance Variation | Milner-Barry Gambit | Sørensen Variation | |
| C02 | French Defense | Advance Variation | Nimzowitsch Attack | | |
| C02 | French Defense | Advance Variation | Nimzowitsch Gambit | | |
| C02 | French Defense | Advance Variation | Nimzowitsch System | | |
| C02 | French Defense | Advance Variation | Paulsen Attack | | |
| C02 | French Defense | Advance Variation | Ruisdonk Gambit | | |
| C02 | French Defense | Advance Variation | Steinitz Variation | | |
| C02 | French Defense | Advance Variation | Wade Variation | | |
| C03 | French Defense | Guimard Variation | Thunderbunny Variation | | |
| C03 | French Defense | Tarrasch Variation | | | |
| C03 | French Defense | Tarrasch Variation | Guimard Defense | | |
| C03 | French Defense | Tarrasch Variation | Haberditz Variation | | |
| C03 | French Defense | Tarrasch Variation | Modern System | | |
| C03 | French Defense | Tarrasch Variation | Morozevich Variation | | |
| C04 | French Defense | Tarrasch Variation | Guimard Defense | Main Line | |
| C05 | French Defense | Tarrasch Variation | Botvinnik Variation | | |
| C05 | French Defense | Tarrasch Variation | Closed Variation | | |
| C05 | French Defense | Tarrasch Variation | Closed Variation | | |
| C05 | French Defense | Tarrasch Variation | Pawn Center Variation | | |
| C06 | French Defense | Tarrasch Variation | Closed Variation | Main Line | |
| C06 | French Defense | Tarrasch Variation | Leningrad Variation | | |
| C07 | French Defense | Tarrasch Variation | Chistyakov Defense | | |
| C07 | French Defense | Tarrasch Variation | Chistyakov Defense | Modern Line | |
| C07 | French Defense | Tarrasch Variation | Eliskases Variation | | |
| C07 | French Defense | Tarrasch Variation | Open System | | |
| C07 | French Defense | Tarrasch Variation | Open System | Euwe-Keres Line | |
| C07 | French Defense | Tarrasch Variation | Open System | Shaposhnikov Gambit | |
| C07 | French Defense | Tarrasch Variation | Open System | Süchting Line | |
| C08 | French Defense | Tarrasch Variation | Open System | | |
| C08 | French Defense | Tarrasch Variation | Open System | Advance Line | |
| C09 | French Defense | Tarrasch Variation | Open System | Main Line | |
| C10 | French Defense | Classical Variation | Svenonius Variation | | |
| C10 | French Defense | Paulsen Variation | | | |
| C10 | French Defense | Rubinstein Variation | | | |
| C10 | French Defense | Rubinstein Variation | Blackburne Defense | | |
| C10 | French Defense | Rubinstein Variation | Capablanca Line | | |
| C10 | French Defense | Rubinstein Variation | Ellis Gambit | | |
| C10 | French Defense | Rubinstein Variation | Fort Knox Variation | | |
| C10 | French Defense | Rubinstein Variation | Kasparov Attack | | |
| C10 | French Defense | Rubinstein Variation | Maric Variation | | |
| C10 | Sicilian Defense | Marshall Gambit | | | |
| C11 | French Defense | Burn Variation | | | |
| C11 | French Defense | Classical Variation | | | |
| C11 | French Defense | Classical Variation | Burn Variation | Main Line | |
| C11 | French Defense | Classical Variation | Burn Variation | Morozevich Line | |
| C11 | French Defense | Classical Variation | Delayed Exchange Variation | | |
| C11 | French Defense | Classical Variation | Steinitz Variation | | |
| C11 | French Defense | Classical Variation | Swiss Variation | | |
| C11 | French Defense | Henneberger Variation | | | |
| C11 | French Defense | Steinitz Variation | | | |
| C11 | French Defense | Steinitz Variation | | | |
| C11 | French Defense | Steinitz Variation | | | |
| C11 | French Defense | Steinitz Variation | | | |
| C11 | French Defense | Steinitz Variation | | | |
| C11 | French Defense | Steinitz Variation | Boleslavsky Variation | | |
| C11 | French Defense | Steinitz Variation | Bradford Attack Variation | | |
| C11 | French Defense | Steinitz Variation | Brodsky-Jones Variation | | |
| C11 | French Defense | Steinitz Variation | Gledhill Attack | | |
| C12 | French Defense | MacCutcheon Variation | | | |
| C12 | French Defense | MacCutcheon Variation | Advance Variation | | |
| C12 | French Defense | MacCutcheon Variation | Bernstein Variation | | |
| C12 | French Defense | MacCutcheon Variation | Bogoljubow Variation | | |
| C12 | French Defense | MacCutcheon Variation | Chigorin Variation | | |
| C12 | French Defense | MacCutcheon Variation | Dr. Olland Variation | | |
| C12 | French Defense | MacCutcheon Variation | Duras Variation | | |
| C12 | French Defense | MacCutcheon Variation | Exchange Variation | | |
| C12 | French Defense | MacCutcheon Variation | Grigoriev Variation | | |
| C12 | French Defense | MacCutcheon Variation | Janowski Variation | | |
| C12 | French Defense | MacCutcheon Variation | Lasker Variation | | |
| C12 | French Defense | MacCutcheon Variation | Lasker Variation | | |
| C12 | French Defense | MacCutcheon Variation | Tartakower Variation | | |
| C13 | French Defense | Alekhine-Chatard Attack | | | |
| C13 | French Defense | Alekhine-Chatard Attack | Albin-Chatard Gambit | | |
| C13 | French Defense | Alekhine-Chatard Attack | Breyer Variation | | |
| C13 | French Defense | Alekhine-Chatard Attack | Maróczy Variation | | |
| C13 | French Defense | Alekhine-Chatard Attack | Spielmann Variation | | |
| C13 | French Defense | Alekhine-Chatard Attack | Teichmann Variation | | |
| C13 | French Defense | Classical Variation | Frankfurt Variation | | |
| C13 | French Defense | Classical Variation | Normal Variation | | |
| C13 | French Defense | Classical Variation | Richter Attack | | |
| C13 | French Defense | Classical Variation | Richter Attack | | |
| C13 | French Defense | Classical Variation | Tartakower Variation | | |
| C13 | French Defense | Classical Variation | Vistaneckis Variation | | |
| C14 | French Defense | Classical Variation | | | |
| C14 | French Defense | Classical Variation | | | |
| C14 | French Defense | Classical Variation | Alapin Variation | | |
| C14 | French Defense | Classical Variation | Pollock Variation | | |
| C14 | French Defense | Classical Variation | Rubinstein Variation | | |
| C14 | French Defense | Classical Variation | Stahlberg Variation | | |
| C14 | French Defense | Classical Variation | Steinitz Variation | | |
| C14 | French Defense | Classical Variation | Tarrasch Variation | | |
| C15 | French Defense | MacCutcheon Variation | Wolf Gambit | | |
| C15 | French Defense | Winawer Variation | | | |
| C15 | French Defense | Winawer Variation | Alekhine Gambit Accepted | | |
| C15 | French Defense | Winawer Variation | Alekhine Gambit | Alatortsev Variation | |
| C20 | King's Pawn Game | Leonardis Variation | | | |
| C15 | French Defense | Winawer Variation | Alekhine Gambit | Kan Variation | |
| C15 | French Defense | Winawer Variation | Alekhine-Maróczy Gambit | | |
| C15 | French Defense | Winawer Variation | Delayed Exchange Variation | | |
| C15 | French Defense | Winawer Variation | Exchange Variation | Canal Attack | |
| C15 | French Defense | Winawer Variation | Fingerslip Variation | | |
| C15 | French Defense | Winawer Variation | Fingerslip Variation | Kunin Double Gambit | |
| C15 | French Defense | Winawer Variation | Fingerslip Variation | Main Line | |
| C15 | French Defense | Winawer Variation | Fingerslip Variation | Schwarz's Line | |
| C15 | French Defense | Winawer Variation | Kondratiyev Variation | | |
| C15 | French Defense | Winawer Variation | Winckelmann-Reimer Gambit | | |
| C16 | French Defense | Winawer Variation | Advance Variation | | |
| C16 | French Defense | Winawer Variation | Petrosian Variation | | |
| C17 | French Defense | Winawer Variation | Advance Variation | | |
| C17 | French Defense | Winawer Variation | Advance Variation | | |
| C17 | French Defense | Winawer Variation | Advance Variation | | |
| C17 | French Defense | Winawer Variation | Advance Variation | Moscow Variation | |
| C17 | French Defense | Winawer Variation | Bogoljubow Variation | | |
| C17 | French Defense | Winawer Variation | Bogoljubow Variation | Icelandic Defense | |
| C17 | French Defense | Winawer Variation | Maróczy-Wallis Variation | | |
| C17 | French Defense | Winawer Variation | Retreat Variation | | |
| C17 | French Defense | Winawer Variation | Retreat Variation | Armenian Line | |
| C18 | French Defense | Winawer Variation | Advance Variation | | |
| C18 | French Defense | Winawer Variation | Classical Variation | | |
| C18 | French Defense | Winawer Variation | Portisch-Hook Variation | | |
| C19 | French Defense | Winawer Variation | Advance Variation | | |
| C19 | French Defense | Winawer Variation | Advance Variation | | |
| C19 | French Defense | Winawer Variation | Poisoned Pawn Variation | | |
| C19 | French Defense | Winawer Variation | Poisoned Pawn Variation | Main Line | |
| C19 | French Defense | Winawer Variation | Poisoned Pawn Variation | Paoli Variation | |
| C19 | French Defense | Winawer Variation | Positional Variation | | |
| C20 | Barnes Opening | Walkerling | | | |
| C20 | Bongcloud Attack | | | | |
| C20 | Center Game | | | | |
| C20 | English Opening | The Whale | | | |
| C20 | King's Pawn Game | | | | |
| C20 | King's Pawn Game | Alapin Opening | | | |
| C20 | King's Pawn Game | Bavarian Gambit | | | |
| C20 | King's Pawn Game | Beyer Gambit | | | |
| C20 | King's Pawn Game | Clam Variation | King's Gambit Reversed | | |
| C20 | King's Pawn Game | Clam Variation | Radisch Gambit | | |
| C20 | King's Pawn Game | King's Head Opening | | | |
| C20 | King's Pawn Game | King's Head Opening | | | |
| D28 | Queen's Gambit Accepted | Classical | Flohr Variation | | |
| D31 | Queen's Gambit Declined | Uhlmann Variation | | | |
| D31 | Semi-Slav Defense | Accelerated Move Order | | | |
| D31 | Semi-Slav Defense | Anti-Noteboom | Stonewall Variation | Portisch Gambit | |
| D31 | Semi-Slav Defense | Gunderam Gambit | | | |
| D31 | Semi-Slav Defense | Marshall Gambit | | | |
| D31 | Semi-Slav Defense | Marshall Gambit | Forgotten Variation | | |
| D31 | Semi-Slav Defense | Marshall Gambit | Main Line | | |
| D31 | Semi-Slav Defense | Marshall Gambit | Tolush Variation | | |
| D31 | Semi-Slav Defense | Noteboom Variation | | | |
| D97 | Grünfeld Defense | Russian Variation | | | |
| C20 | King's Pawn Game | MacLeod Attack | | | |
| C20 | King's Pawn Game | MacLeod Attack | Lasa Gambit | | |
| C20 | King's Pawn Game | MacLeod Attack | Norwalde Gambit | | |
| C20 | King's Pawn Game | Mengarini's Opening | | | |
| C20 | King's Pawn Game | Napoleon Attack | | | |
| C20 | King's Pawn Game | Philidor Gambit | | | |
| C20 | King's Pawn Game | Tortoise Opening | | | |
| C20 | King's Pawn Game | Wayward Queen Attack | | | |
| C20 | King's Pawn Game | Wayward Queen Attack | Kiddie Countergambit | | |
| C20 | King's Pawn Game | Wayward Queen Attack | Mellon Gambit | | |
| C20 | King's Pawn Game | Weber Gambit | | | |
| C20 | King's Pawn Opening | | | | |
| C20 | King's Pawn Opening | Speers | | | |
| C20 | King's Pawn Opening | Van Hooydoon Gambit | | | |
| C20 | Portuguese Opening | | | | |
| C20 | Portuguese Opening | Miguel Gambit | | | |
| C20 | Portuguese Opening | Portuguese Gambit | | | |
| C21 | Center Game | | | | |
| C21 | Center Game Accepted | | | | |
| C21 | Center Game | Halasz-McDonnell Gambit | | | |
| C21 | Center Game | Halasz-McDonnell Gambit | Crocodile Variation | | |
| C21 | Center Game | Kieseritzky Variation | | | |
| C21 | Center Game | Kieseritzky Variation | | | |
| C21 | Center Game | Kieseritzky Variation | | | |
| C21 | Center Game | Lanc-Arnold Gambit | | | |
| C21 | Center Game | Lanc-Arnold Gambit | Schippler Gambit | | |
| C21 | Center Game | Ross Gambit | | | |
| C21 | Center Game | von der Lasa Gambit | | | |
| C21 | Danish Gambit | | | | |
| C21 | Danish Gambit Accepted | | | | |
| C21 | Danish Gambit Accepted | Chigorin Defense | | | |
| C21 | Danish Gambit Accepted | Classical Defense | | | |
| C21 | Danish Gambit Accepted | Copenhagen Defense | | | |
| C21 | Danish Gambit Accepted | Schlechter Defense | | | |
| C21 | Danish Gambit Accepted | Svenonius Defense | | | |
| C21 | Danish Gambit Declined | Sörensen Defense | | | |
| C22 | Center Game | Berger Variation | | | |
| C22 | Center Game | Charousek Variation | | | |
| C22 | Center Game | Hall Variation | | | |
| C22 | Center Game | Kupreichik Variation | | | |
| C22 | Center Game | Normal Variation | | | |
| C22 | Center Game | Paulsen Attack Variation | | | |
| C22 | Center Game | l'Hermet Variation | | | |
| C23 | Bishop's Opening | | | | |
| C23 | Bishop's Opening | Anderssen Gambit | | | |
| C23 | Bishop's Opening | Boi Variation | | | |
| C23 | Bishop's Opening | Calabrese Countergambit | | | |
| C23 | Bishop's Opening | Calabrese Countergambit | Jaenisch Variation | | |
| C23 | Bishop's Opening | Four Pawns Gambit | | | |
| C23 | Bishop's Opening | Khan Gambit | | | |
| C23 | Bishop's Opening | Lewis Countergambit | | | |
| C23 | Bishop's Opening | Lewis Countergambit | | | |
| C23 | Bishop's Opening | Lewis Countergambit | Walker Variation | | |
| C23 | Bishop's Opening | Lewis Gambit | | | |
| C23 | Bishop's Opening | Lisitsyn Variation | | | |
| C23 | Bishop's Opening | Lopez Gambit | | | |
| C23 | Bishop's Opening | Lopez Variation | | | |
| C23 | Bishop's Opening | Lopez Variation | Lopez Gambit | | |
| C23 | Bishop's Opening | McDonnell Gambit | | | |
| C23 | Bishop's Opening | McDonnell Gambit | La Bourdonnais-Denker Gambit | | |
| C23 | Bishop's Opening | McDonnell Gambit | McDonnell Double Gambit | | |
| C23 | Bishop's Opening | Philidor Counterattack | | | |
| C23 | Bishop's Opening | Philidor Variation | | | |
| C23 | Bishop's Opening | Pratt Variation | | | |
| C23 | Bishop's Opening | Stein Gambit | | | |
| C23 | Bishop's Opening | Thorold Gambit | | | |
| C23 | Bishop's Opening | del Rio Variation | | | |
| C24 | Bishop's Opening | Berlin Defense | | | |
| C24 | Bishop's Opening | Berlin Defense | Greco Gambit | | |
| C24 | Bishop's Opening | Kitchener Folly | | | |
| C24 | Bishop's Opening | Krejcik Gambit | | | |
| C24 | Bishop's Opening | Pachman Gambit | | | |
| C24 | Bishop's Opening | Ponziani Gambit | | | |
| C24 | Bishop's Opening | Urusov Gambit | Panov Variation | | |
| C24 | Bishop's Opening | Vienna Hybrid | | | |
| C24 | Bishop's Opening | Warsaw Gambit | | | |
| C25 | Vienna Gambit, with Max Lange Defense | | | | |
| C25 | Vienna Gambit, with Max Lange Defense | Cunningham Defense | | | |
| C25 | Vienna Gambit, with Max Lange Defense | Hamppe-Allgaier Gambit | | | |
| C25 | Vienna Gambit, with Max Lange Defense | Hamppe-Allgaier Gambit | Alapin Variation | | |
| C25 | Vienna Gambit, with Max Lange Defense | Hamppe-Allgaier Gambit | Thorold Variation | | |
| C25 | Vienna Gambit, with Max Lange Defense | Hamppe-Muzio Gambit | | | |
| C25 | Vienna Gambit, with Max Lange Defense | Knight Variation | | | |
| C25 | Vienna Gambit, with Max Lange Defense | Pierce Gambit | | | |
| C25 | Vienna Gambit, with Max Lange Defense | Quelle Gambit | | | |
| C25 | Vienna Gambit, with Max Lange Defense | Steinitz Gambit | | | |
| C25 | Vienna Gambit, with Max Lange Defense | Steinitz Gambit | Fraser-Minckwitz Defense | | |
| C25 | Vienna Gambit, with Max Lange Defense | Steinitz Gambit | Main Line | | |
| C25 | Vienna Gambit, with Max Lange Defense | Steinitz Gambit | Paulsen Defense | | |
| C25 | Vienna Gambit, with Max Lange Defense | Steinitz Gambit | Sörensen Defense | | |
| C27 | Vienna Game | Stanley Variation | Alekhine Variation | | |
| C25 | Vienna Gambit, with Max Lange Defense | Steinitz Gambit | Zukertort Defense | | |
| C25 | Vienna Game | | | | |
| C25 | Vienna Game | Anderssen Defense | | | |
| C25 | Vienna Game | Fyfe Gambit | | | |
| C25 | Vienna Game | Giraffe Attack | | | |
| C25 | Vienna Game | Hamppe-Meitner Variation | | | |
| C25 | Vienna Game | Hamppe-Muzio Gambit | | | |
| C25 | Vienna Game | Hamppe-Muzio | Dubois Variation | | |
| C25 | Vienna Game | Max Lange Defense | | | |
| C25 | Vienna Game | Omaha Gambit | | | |
| C25 | Vienna Game | Paulsen Variation | | | |
| C25 | Vienna Game | Paulsen Variation | | | |
| C25 | Vienna Game | Paulsen Variation | Mariotti Gambit | | |
| C25 | Vienna Game | Philidor Countergambit | | | |
| C25 | Vienna Game | Pierce Gambit | Rushmere Attack | | |
| C25 | Vienna Game | Stanley Variation | Meitner-Mieses Gambit | | |
| C25 | Vienna Game | Zhuravlev Countergambit | | | |
| C26 | Bishop's Opening | Horwitz Gambit | | | |
| C26 | Bishop's Opening | Vienna Hybrid | Spielmann Attack | | |
| C26 | Vienna Game | Falkbeer Variation | | | |
| C26 | Vienna Game | Mengarini Variation | | | |
| C26 | Vienna Game | Mieses Variation | | | |
| C26 | Vienna Game | Mieses Variation | Erben Gambit | | |
| C26 | Vienna Game | Paulsen Variation | Pollock Gambit | | |
| C26 | Vienna Game | Stanley Variation | | | |
| C26 | Vienna Game | Stanley Variation | Eifel Gambit | | |
| C26 | Vienna Game | Stanley Variation | Reversed Spanish | | |
| C27 | Bishop's Opening | Boden-Kieseritzky Gambit | | | |
| C27 | Bishop's Opening | Boden-Kieseritzky Gambit | Lichtenhein Defense | | |
| C27 | Vienna Game | Adams' Gambit | | | |
| C27 | Vienna Game | Frankenstein-Dracula Variation | | | |
| C27 | Vienna Game | Stanley Variation | Frankenstein-Dracula Variation | | |
| C27 | Vienna Game | Stanley Variation | Monster Declined | | |
| C28 | Bishop's Opening | Vienna Hybrid | Hromádka Variation | | |
| C28 | Vienna Game | Stanley Variation | Bronstein Gambit | | |
| C28 | Vienna Game | Stanley Variation | Three Knights Variation | | |
| C29 | Vienna Game | Heyde Variation | | | |
| C29 | Vienna Game | Vienna Gambit | | | |
| C29 | Vienna Game | Vienna Gambit | Bardeleben Variation | | |
| C29 | Vienna Game | Vienna Gambit | Breyer Variation | | |
| C29 | Vienna Game | Vienna Gambit | Kaufmann Variation | | |
| C29 | Vienna Game | Vienna Gambit | Main Line | | |
| C29 | Vienna Game | Vienna Gambit | Modern Variation | | |
| C29 | Vienna Game | Vienna Gambit | Paulsen Attack | | |
| C29 | Vienna Game | Vienna Gambit | Steinitz Variation | | |
| C29 | Vienna Game | Vienna Gambit | Wurzburger Trap | | |
| C30 | King's Gambit | | | | |
| C30 | King's Gambit Declined | Classical Variation | | | |
| C30 | King's Gambit Declined | Classical Variation | | | |
| C30 | King's Gambit Declined | Classical Variation | Euwe Attack | | |
| C30 | King's Gambit Declined | Classical Variation | Rotlewi Countergambit | | |
| C30 | King's Gambit Declined | Classical Variation | Rubinstein Countergambit | | |
| C30 | King's Gambit Declined | Classical | Hanham Variation | | |
| C30 | King's Gambit Declined | Classical | Réti Variation | | |
| C30 | King's Gambit Declined | Classical | Soldatenkov Variation | | |
| C30 | King's Gambit Declined | Classical | Svenonius Variation | | |
| C30 | King's Gambit Declined | Hobbs-Zilbermints Gambit | | | |
| C30 | King's Gambit Declined | Keene Defense | | | |
| D00 | Queen's Pawn Game | Zurich Gambit | | | |
| C30 | King's Gambit Declined | Keene's Defense | | | |
| C30 | King's Gambit Declined | Keene's Defense | | | |
| C30 | King's Gambit Declined | Mafia Defense | | | |
| C30 | King's Gambit Declined | Miles Defense | | | |
| C30 | King's Gambit Declined | Norwalde Variation | | | |
| C30 | King's Gambit Declined | Norwalde Variation | Bücker Gambit | | |
| C30 | King's Gambit Declined | Norwalde Variation | Schubert Variation | | |
| C30 | King's Gambit Declined | Panteldakis Countergambit | | | |
| C30 | King's Gambit Declined | Panteldakis Countergambit | Greco Variation | | |
| C30 | King's Gambit Declined | Panteldakis Countergambit | Pawn Sacrifice Line | | |
| C30 | King's Gambit Declined | Panteldakis Countergambit | Schiller's Defense | | |
| C30 | King's Gambit Declined | Panteldakis Countergambit | Shirazi Line | | |
| C30 | King's Gambit Declined | Panteldakis Countergambit | Symmetrical Variation | | |
| C30 | King's Gambit Declined | Petrov's Defense | | | |
| C30 | King's Gambit Declined | Queen's Knight Defense | | | |
| C30 | King's Gambit Declined | Senechaud Countergambit | | | |
| C30 | King's Gambit Declined | Soller-Zilbermints Gambit | | | |
| C30 | King's Gambit Declined | Zilbermints Double Countergambit | | | |
| C30 | King's Gambit Declined | Zilbermints Double Gambit | | | |
| C31 | King's Gambit Declined | Falkbeer Countergambit | | | |
| C31 | King's Gambit Declined | Falkbeer Countergambit Accepted | | | |
| C31 | King's Gambit Declined | Falkbeer Countergambit | Anderssen Attack | | |
| C31 | King's Gambit Declined | Falkbeer Countergambit | Blackburne Attack | | |
| C31 | King's Gambit Declined | Falkbeer Countergambit | Charousek Gambit | | |
| C31 | King's Gambit Declined | Falkbeer Countergambit | Charousek Gambit | Morphy Defense | |
| C31 | King's Gambit Declined | Falkbeer Countergambit | Hinrichsen Gambit | | |
| C31 | King's Gambit Declined | Falkbeer Countergambit | Miles Gambit | | |
| C31 | King's Gambit Declined | Falkbeer Countergambit | Milner-Barry Variation | | |
| C31 | King's Gambit Declined | Falkbeer Countergambit | Modern Transfer | | |
| C31 | King's Gambit Declined | Falkbeer Countergambit | Nimzowitsch-Marshall Countergambit | | |
| C31 | King's Gambit Declined | Falkbeer Countergambit | Pickler Gambit | | |
| C31 | King's Gambit Declined | Falkbeer Countergambit | Rubinstein Variation | | |
| C31 | King's Gambit Declined | Falkbeer Countergambit | Staunton Line | | |
| C31 | Van Geet Opening | Grünfeld Defense | Steiner Gambit | | |
| C32 | King's Gambit Declined | Falkbeer Countergambit | Alapin Variation | | |
| C32 | King's Gambit Declined | Falkbeer Countergambit | Charousek Gambit | | |
| C32 | King's Gambit Declined | Falkbeer Countergambit | Charousek Gambit Accepted | | |
| C32 | King's Gambit Declined | Falkbeer Countergambit | Charousek Gambit | Keres Variation | |
| C32 | King's Gambit Declined | Falkbeer Countergambit | Charousek Gambit | Main Line | |
| C32 | King's Gambit Declined | Falkbeer Countergambit | Charousek Gambit | Old Line | |
| C32 | King's Gambit Declined | Falkbeer Countergambit | Charousek Variation | | |
| C32 | King's Gambit Declined | Falkbeer Countergambit | Tarrasch Variation | | |
| C33 | King's Gambit Accepted | | | | |
| C33 | King's Gambit Accepted | Basman Gambit | | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Anderssen Defense | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Anderssen Variation | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Bledow Countergambit | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Bledow Variation | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Boden Variation | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Bogoljubow Defense | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Bogoljubow Variation | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Boren-Svenonius Variation | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Bryan Countergambit | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Chigorin's Attack | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Classical Defense | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Classical Defense | Cozio Attack | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Cozio Defense | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Cozio Variation | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | First Jaenisch Variation | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Fraser Variation | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Gianutio Gambit | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Greco Variation | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Grimm Attack | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Kieseritzky Gambit | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Lopez Defense | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Lopez Variation | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Maurian Defense | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | McDonnell Attack | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | McDonnell Attack | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Paulsen Attack | | |
| C33 | King's Gambit Accepted | Bishop's Gambit | Steinitz Defense | | |
| C33 | King's Gambit Accepted | Breyer Gambit | | | |
| C33 | King's Gambit Accepted | Carrera Gambit | | | |
| C33 | King's Gambit Accepted | Dodo Variation | | | |
| C33 | King's Gambit Accepted | Eisenberg Variation | | | |
| C33 | King's Gambit Accepted | Gaga Gambit | | | |
| C33 | King's Gambit Accepted | Lopez-Gianutio Countergambit | Hein Variation | | |
| C33 | King's Gambit Accepted | Mason-Keres Gambit | | | |
| C33 | King's Gambit Accepted | Orsini Gambit | | | |
| C33 | King's Gambit Accepted | Paris Gambit | | | |
| C33 | King's Gambit Accepted | Polerio Gambit | | | |
| C33 | King's Gambit Accepted | Schurig Gambit | with Bb5 | | |
| C33 | King's Gambit Accepted | Schurig Gambit | with Bd3 | | |
| C33 | King's Gambit Accepted | Stamma Gambit | | | |
| C33 | King's Gambit Accepted | Tartakower Gambit | | | |
| C33 | King's Gambit Accepted | Tartakower Gambit | Weiss Defense | | |
| C33 | King's Gambit Accepted | Tumbleweed | | | |
| C34 | King's Gambit Accepted | Becker Defense | | | |
| C34 | King's Gambit Accepted | Bonsch-Osmolovsky Variation | | | |
| C34 | King's Gambit Accepted | Fischer Defense | | | |
| C34 | King's Gambit Accepted | Fischer Defense | Schulder Gambit | | |
| C34 | King's Gambit Accepted | Fischer Defense | Spanish Variation | | |
| C34 | King's Gambit Accepted | Gianutio Countergambit | | | |
| C34 | King's Gambit Accepted | Greco Gambit | | | |
| C34 | King's Gambit Accepted | King's Knight's Gambit | | | |
| C34 | King's Gambit Accepted | King's Knight's Gambit | | | |
| C34 | King's Gambit Accepted | MacLeod Defense | | | |
| C34 | King's Gambit Accepted | Schallopp Defense | | | |
| C34 | King's Gambit Accepted | Schallopp Defense | Tashkent Attack | | |
| C34 | King's Gambit Accepted | Wagenbach Defense | | | |
| C35 | King's Gambit Accepted | Cunningham Defense | | | |
| C35 | King's Gambit Accepted | Cunningham Defense | Bertin Gambit | | |
| C35 | King's Gambit Accepted | Cunningham Defense | Bertin Gambit | | |
| C35 | King's Gambit Accepted | Cunningham Defense | McCormick Defense | | |
| C36 | King's Gambit Accepted | Abbazia Defense | | | |
| C36 | King's Gambit Accepted | Abbazia Defense | Main Line | | |
| C36 | King's Gambit Accepted | Modern Defense | | | |
| C36 | King's Gambit Accepted | Modern Defense | | | |
| C37 | King's Gambit Accepted | Australian Gambit | | | |
| C37 | King's Gambit Accepted | Blachly Gambit | | | |
| C37 | King's Gambit Accepted | Double Muzio Gambit | | | |
| C37 | King's Gambit Accepted | Double Muzio Gambit | Baldwin Gambit | | |
| C37 | King's Gambit Accepted | Double Muzio Gambit | Bello Gambit | | |
| C37 | King's Gambit Accepted | Double Muzio Gambit | Paulsen Defense | | |
| C37 | King's Gambit Accepted | Double Muzio Gambit | Young Gambit | | |
| C37 | King's Gambit Accepted | Ghulam-Kassim Gambit | | | |
| C37 | King's Gambit Accepted | Ghulam-Kassim Gambit | | | |
| C37 | King's Gambit Accepted | King's Knight's Gambit | | | |
| C37 | King's Gambit Accepted | Kotov Gambit | | | |
| C37 | King's Gambit Accepted | Lolli Gambit | | | |
| C37 | King's Gambit Accepted | Lolli Gambit | Young Variation | | |
| C37 | King's Gambit Accepted | McDonnell Gambit | | | |
| C37 | King's Gambit Accepted | Middleton Countergambit | | | |
| C37 | King's Gambit Accepted | Muzio Gambit Accepted | From's Defense | | |
| C37 | King's Gambit Accepted | Muzio Gambit | Brentano Defense | | |
| C37 | King's Gambit Accepted | Muzio Gambit | Holloway Defense | | |
| C37 | King's Gambit Accepted | Muzio Gambit | Kling and Horwitz Counterattack | | |
| C37 | King's Gambit Accepted | Muzio Gambit | Sarratt Defense | | |
| C37 | King's Gambit Accepted | Muzio Gambit | Wild Muzio Gambit | | |
| C37 | King's Gambit Accepted | Quaade Gambit | | | |
| C37 | King's Gambit Accepted | Rosentreter Gambit | | | |
| C37 | King's Gambit Accepted | Rosentreter Gambit | Bird Gambit | | |
| C37 | King's Gambit Accepted | Rosentreter Gambit | Sörensen Gambit | | |
| C37 | King's Gambit Accepted | Rosentreter Gambit | Testa Variation | | |
| C37 | King's Gambit Accepted | Salvio Gambit | | | |
| C37 | King's Gambit Accepted | Salvio Gambit | Anderssen Counterattack | | |
| C37 | King's Gambit Accepted | Salvio Gambit | Cochrane Gambit | | |
| C37 | King's Gambit Accepted | Salvio Gambit | Santa Maria Defense | | |
| C37 | King's Gambit Accepted | Salvio Gambit | Silberschmidt Defense | | |
| C37 | King's Gambit Accepted | Salvio Gambit | Viennese Variation | | |
| C37 | King's Gambit Accepted | Silberschmidt Gambit | | | |
| C37 | King's Gambit Accepted | Sörensen Gambit | | | |
| C38 | King's Gambit Accepted | Greco Gambit | | | |
| C38 | King's Gambit Accepted | Hanstein Gambit | | | |
| C38 | King's Gambit Accepted | Mayet Gambit | | | |
| C38 | King's Gambit Accepted | Philidor Gambit | | | |
| C38 | King's Gambit Accepted | Philidor Gambit | Schultz Variation | | |
| C38 | King's Gambit Accepted | Traditional Variation | | | |
| C39 | King's Gambit Accepted | Allgaier Gambit | | | |
| C39 | King's Gambit Accepted | Allgaier Gambit | Thorold Attack | | |
| C39 | King's Gambit Accepted | Allgaier Gambit | Urusov Attack | | |
| C39 | King's Gambit Accepted | Allgaier | Blackburne Gambit | | |
| C39 | King's Gambit Accepted | Allgaier | Cook Variation | | |
| C39 | King's Gambit Accepted | Allgaier | Horny Defense | | |
| C39 | King's Gambit Accepted | Allgaier | Schlechter Defense | | |
| C39 | King's Gambit Accepted | Allgaier | Urusov Attack | | |
| C39 | King's Gambit Accepted | Kieseritzky Gambit | | | |
| C39 | King's Gambit Accepted | Kieseritzky Gambit | Anderssen Defense | | |
| C39 | King's Gambit Accepted | Kieseritzky Gambit | Anderssen-Cordel Gambit | | |
| C39 | King's Gambit Accepted | Kieseritzky Gambit | Berlin Defense | | |
| C39 | King's Gambit Accepted | Kieseritzky Gambit | Berlin Defense | Rubinstein Variation | |
| C39 | King's Gambit Accepted | Kieseritzky Gambit | Berlin Defense | de Riviere Variation | |
| C39 | King's Gambit Accepted | Kieseritzky Gambit | Brentano Defense | | |
| C39 | King's Gambit Accepted | Kieseritzky Gambit | Brentano Defense | | |
| C39 | King's Gambit Accepted | Kieseritzky Gambit | Brentano Defense | Caro Variation | |
| C39 | King's Gambit Accepted | Kieseritzky Gambit | Cotter Gambit | | |
| C39 | King's Gambit Accepted | Kieseritzky Gambit | Kolisch Defense | | |
| C39 | King's Gambit Accepted | Kieseritzky Gambit | Long Whip | | |
| C39 | King's Gambit Accepted | Kieseritzky Gambit | Neumann Defense | | |
| C39 | King's Gambit Accepted | Kieseritzky Gambit | Paulsen Defense | | |
| C39 | King's Gambit Accepted | Kieseritzky Gambit | Paulsen Defense Deferred | | |
| C39 | King's Gambit Accepted | Kieseritzky Gambit | Rice Gambit | | |
| C39 | King's Gambit Accepted | Kieseritzky Gambit | Rosenthal Defense | | |
| C39 | King's Gambit Accepted | Kieseritzky | Long Whip Defense | Jaenisch Variation | |
| C39 | King's Gambit Accepted | Kieseritzky | Polerio Defense | | |
| C39 | King's Gambit Accepted | Kieseritzky | Rice Gambit | | |
| C39 | King's Gambit Accepted | Kieseritzky | Salvio Defense | Cozio Variation | |
| C39 | King's Gambit Accepted | King's Knight's Gambit | | | |
| C40 | Elephant Gambit | | | | |
| C40 | Elephant Gambit | Maróczy Gambit | | | |
| C40 | Elephant Gambit | Paulsen Countergambit | | | |
| C40 | Elephant Gambit | Wasp Variation | | | |
| C40 | Gunderam Defense | | | | |
| C40 | King's Knight Opening | | | | |
| C40 | King's Pawn Game | Busch-Gass Gambit | | | |
| C40 | King's Pawn Game | Busch-Gass Gambit | Chiodini Gambit | | |
| C40 | King's Pawn Game | Damiano Defense | | | |
| C40 | King's Pawn Game | Damiano Defense | Damiano Gambit | | |
| C40 | King's Pawn Game | Damiano Defense | Damiano Gambit | Chigorin Gambit | |
| C40 | King's Pawn Game | Gunderam Defense | Gunderam Gambit | | |
| C40 | King's Pawn Game | Gunderam Gambit | | | |
| C40 | King's Pawn Game | La Bourdonnais Gambit | | | |
| C40 | King's Pawn Game | McConnell Defense | | | |
| C40 | Latvian Gambit | | | | |
| C40 | Latvian Gambit Accepted | | | | |
| C40 | Latvian Gambit Accepted | Bilguer Variation | | | |
| C40 | Latvian Gambit Accepted | Bronstein Attack | | | |
| C40 | Latvian Gambit Accepted | Bronstein Gambit | | | |
| C40 | Latvian Gambit Accepted | Foltys Variation | | | |
| C40 | Latvian Gambit Accepted | Foltys-Leonhardt Variation | | | |
| C40 | Latvian Gambit Accepted | Leonhardt Variation | | | |
| C40 | Latvian Gambit Accepted | Main Line | | | |
| C40 | Latvian Gambit Accepted | Nimzowitsch Attack | | | |
| C40 | Latvian Gambit | Behting Variation | | | |
| C40 | Latvian Gambit | Corkscrew Countergambit | | | |
| C40 | Latvian Gambit | Corkscrew Gambit | | | |
| C40 | Latvian Gambit | Diepstraten Countergambit | | | |
| C40 | Latvian Gambit | Fraser Defense | | | |
| C40 | Latvian Gambit | Greco Variation | | | |
| C40 | Latvian Gambit | Lobster Gambit | | | |
| C40 | Latvian Gambit | Mason Countergambit | | | |
| C40 | Latvian Gambit | Mayet Attack | | | |
| C40 | Latvian Gambit | Mayet Attack | Morgado Defense | | |
| C40 | Latvian Gambit | Mayet Attack | Poisoned Pawn Variation | | |
| C40 | Latvian Gambit | Mayet Attack | Polerio-Svedenborg Variation | | |
| C40 | Latvian Gambit | Mayet Attack | Strautins Gambit | | |
| C40 | Latvian Gambit | Mlotkowski Variation | | | |
| C40 | Latvian Gambit | Senechaud Gambit | | | |
| C41 | Philidor Defense | | | | |
| C41 | Philidor Defense | | | | |
| C41 | Philidor Defense | | | | |
| C41 | Philidor Defense | | | | |
| C41 | Philidor Defense | Albin-Blackburne Gambit | | | |
| C41 | Philidor Defense | Berger Variation | | | |
| C41 | Philidor Defense | Bird Gambit | | | |
| C41 | Philidor Defense | Boden Variation | | | |
| C41 | Philidor Defense | Exchange Variation | | | |
| C41 | Philidor Defense | Exchange Variation | | | |
| C41 | Philidor Defense | Exchange Variation | | | |
| C41 | Philidor Defense | Hanham Variation | | | |
| C41 | Philidor Defense | Hanham Variation | Delmar Variation | | |
| C41 | Philidor Defense | Hanham Variation | Krause Variation | | |
| C41 | Philidor Defense | Hanham Variation | Schlechter Variation | | |
| C41 | Philidor Defense | Hanham Variation | Sharp Variation | | |
| C41 | Philidor Defense | Hanham Variation | Steiner Variation | | |
| C41 | Philidor Defense | Hanham | Kmoch Variation | | |
| C41 | Philidor Defense | Larsen Variation | | | |
| C41 | Philidor Defense | Lion Variation | | | |
| C41 | Philidor Defense | Lion Variation | Bishop Sacrifice | | |
| C41 | Philidor Defense | Lion Variation | Delayed Bishop Sacrifice | | |
| C41 | Philidor Defense | Lion Variation | Forcing Line | | |
| C41 | Philidor Defense | Lion Variation | Lion's Claw | with Bc4 and h6 | |
| C42 | Petrov's Defense | Paulsen Attack | | | |
| C41 | Philidor Defense | Lion Variation | Lion's Claw | with Be2 and c6 | |
| C41 | Philidor Defense | Lion Variation | Shirov Gambit | | |
| C41 | Philidor Defense | Lion Variation | Sozin Variation | | |
| C41 | Philidor Defense | Lopez Countergambit | | | |
| C41 | Philidor Defense | Lopez Countergambit | Jaenisch Variation | | |
| C41 | Philidor Defense | Morphy Gambit | | | |
| C41 | Philidor Defense | Nimzowitsch Variation | | | |
| C41 | Philidor Defense | Nimzowitsch Variation | | | |
| C41 | Philidor Defense | Nimzowitsch Variation | Klein Variation | | |
| C41 | Philidor Defense | Nimzowitsch Variation | Rellstab Variation | | |
| C41 | Philidor Defense | Nimzowitsch Variation | Sokolsky Variation | | |
| C41 | Philidor Defense | Nimzowitsch | Larobok Variation | | |
| C41 | Philidor Defense | Nimzowitsch | Locock Variation | | |
| C41 | Philidor Defense | Paulsen Attack | | | |
| C41 | Philidor Defense | Philidor Countergambit | | | |
| C41 | Philidor Defense | Philidor Countergambit | Berger Variation | | |
| C41 | Philidor Defense | Philidor Countergambit | Zukertort Variation | | |
| C41 | Philidor Defense | Philidor Countergambit | del Rio Attack | | |
| C41 | Philidor Defense | Philidor Gambit | | | |
| C41 | Philidor Defense | Steinitz Variation | | | |
| C42 | Petrov's Defense | | | | |
| C42 | Petrov's Defense | | | | |
| C42 | Petrov's Defense | | | | |
| C42 | Petrov's Defense | | | | |
| C42 | Petrov's Defense | | | | |
| C42 | Petrov's Defense | Classical Attack | | | |
| C42 | Petrov's Defense | Classical Attack | Berger Variation | | |
| C42 | Petrov's Defense | Classical Attack | Chigorin Variation | | |
| C42 | Petrov's Defense | Stafford Gambit | | | |
| C42 | Petrov's Defense | Classical Attack | Chigorin Variation | Browne Attack | |
| C42 | Petrov's Defense | Classical Attack | Chigorin Variation | Main Line | |
| C42 | Petrov's Defense | Classical Attack | Closed Variation | | |
| C42 | Petrov's Defense | Classical Attack | Jaenisch Variation | | |
| C42 | Petrov's Defense | Classical Attack | Krause Variation | | |
| C42 | Petrov's Defense | Classical Attack | Marshall Trap | | |
| C42 | Petrov's Defense | Classical Attack | Marshall Variation | | |
| C42 | Petrov's Defense | Classical Attack | Marshall Variation | Chinese Gambit | |
| C42 | Petrov's Defense | Classical Attack | Maróczy Variation | | |
| C42 | Petrov's Defense | Classical Attack | Mason Variation | | |
| C42 | Petrov's Defense | Classical Attack | Mason-Showalter Variation | | |
| C42 | Petrov's Defense | Classical Attack | Staunton Variation | | |
| C42 | Petrov's Defense | Classical Attack | Tarrasch Variation | | |
| C42 | Petrov's Defense | Cochrane Gambit | | | |
| C42 | Petrov's Defense | Cochrane Gambit | Bishop Check Line | | |
| C42 | Petrov's Defense | Cochrane Gambit | Center Variation | | |
| C42 | Petrov's Defense | Cozio Attack | | | |
| C42 | Petrov's Defense | Damiano Variation | | | |
| C42 | Petrov's Defense | Damiano Variation | Kholmov Gambit | | |
| C42 | Petrov's Defense | French Attack | | | |
| C42 | Petrov's Defense | Italian Variation | | | |
| C42 | Petrov's Defense | Karklins-Martinovsky Variation | | | |
| C42 | Petrov's Defense | Kaufmann Attack | | | |
| C42 | Petrov's Defense | Millennium Attack | | | |
| C42 | Petrov's Defense | Moody Gambit | | | |
| C42 | Petrov's Defense | Nimzowitsch Attack | | | |
| C42 | Petrov's Defense | Stafford Gambit | | | |
| C42 | Petrov's Defense | Three Knights Game | | | |
| C43 | Bishop's Opening | Urusov Gambit | | | |
| C43 | Bishop's Opening | Urusov Gambit | Keidansky Gambit | | |
| C43 | Petrov's Defense | Modern Attack | | | |
| C43 | Petrov's Defense | Modern Attack | | | |
| C43 | Petrov's Defense | Modern Attack | Bardeleben Variation | | |
| C43 | Petrov's Defense | Modern Attack | Center Attack | | |
| C43 | Petrov's Defense | Modern Attack | Center Variation | | |
| C43 | Petrov's Defense | Modern Attack | Murrey Variation | | |
| C43 | Petrov's Defense | Modern Attack | Steinitz Variation | | |
| C43 | Petrov's Defense | Modern Attack | Symmetrical Variation | | |
| C43 | Petrov's Defense | Modern Attack | Tal Gambit | | |
| C43 | Petrov's Defense | Modern Attack | Trifunovic Variation | | |
| C44 | Dresden Opening | The Goblin | | | |
| C44 | Irish Gambit | | | | |
| C44 | King's Knight Opening | Konstantinopolsky | | | |
| C44 | King's Knight Opening | Normal Variation | | | |
| C44 | King's Pawn Game | Dresden Opening | | | |
| C44 | King's Pawn Game | Pachman Wing Gambit | | | |
| C44 | King's Pawn Game | Schulze-Müller Gambit | | | |
| C44 | King's Pawn Game | Tayler Opening | | | |
| C44 | King's Pawn Game | Tayler Opening | | | |
| C44 | King's Pawn Game | Tayler Opening | Basman Gambit | | |
| C44 | King's Pawn Game | Tayler Opening | Inverted Hanham | | |
| C44 | Latvian Gambit | Clam Gambit | | | |
| C44 | Ponziani Opening | | | | |
| C44 | Ponziani Opening | Caro Gambit | | | |
| C44 | Ponziani Opening | Jaenisch Counterattack | | | |
| C44 | Ponziani Opening | Jaenisch Counterattack | | | |
| C44 | Ponziani Opening | Jaenisch Counterattack | | | |
| C44 | Ponziani Opening | Jaenisch Counterattack | | | |
| C44 | Ponziani Opening | Leonhardt Variation | | | |
| C44 | Ponziani Opening | Neumann Gambit | | | |
| C44 | Ponziani Opening | Ponziani Countergambit | | | |
| C44 | Ponziani Opening | Ponziani Countergambit | Schmidt Attack | | |
| C44 | Ponziani Opening | Romanishin Variation | | | |
| C44 | Ponziani Opening | Réti Variation | | | |
| C44 | Ponziani Opening | Spanish Variation | | | |
| C44 | Ponziani Opening | Spanish Variation | Harrwitz Attack | Nikitin Gambit | |
| C44 | Ponziani Opening | Steinitz Variation | | | |
| C44 | Ponziani Opening | Vukovic Gambit | | | |
| C44 | Scotch Game | | | | |
| C44 | Scotch Game | | | | |
| C44 | Scotch Game | Benima Defense | | | |
| C44 | Scotch Game | Cochrane Variation | | | |
| C44 | Scotch Game | Cochrane-Shumov Defense | | | |
| C44 | Scotch Game | Göring Gambit | | | |
| C44 | Scotch Game | Göring Gambit | Bardeleben Variation | | |
| C44 | Scotch Game | Göring Gambit | Double Pawn Sacrifice | | |
| C44 | Scotch Game | Göring Gambit | Main Line | | |
| C44 | Scotch Game | Hanneken Variation | | | |
| C44 | Scotch Game | Haxo Gambit | | | |
| C44 | Scotch Game | Lolli Variation | | | |
| C44 | Scotch Game | Lolli Variation | | | |
| C44 | Scotch Game | Napoleon Gambit | | | |
| C44 | Scotch Game | Relfsson Gambit | | | |
| C44 | Scotch Game | Scotch Gambit | | | |
| C44 | Scotch Game | Scotch Gambit | Advance Variation | | |
| C44 | Scotch Game | Scotch Gambit | Cochrane-Anderssen Variation | | |
| C44 | Scotch Game | Scotch Gambit | Dubois Réti Defense | | |
| C45 | Scotch Game | Schmidt Variation | | | |
| C44 | Scotch Game | Scotch Gambit | Göring Gambit Declined | | |
| C44 | Scotch Game | Scotch Gambit | Kingside Variation | | |
| C44 | Scotch Game | Scotch Gambit | London Defense | | |
| C44 | Scotch Game | Scotch Gambit | Sarratt Variation | | |
| C44 | Scotch Game | Sea-Cadet Mate | | | |
| C44 | Scotch Game | Vitzthum Attack | | | |
| C45 | Scotch Game | | | | |
| C45 | Scotch Game | | | | |
| C45 | Scotch Game | Alekhine Gambit | | | |
| C45 | Scotch Game | Blumenfeld Attack | | | |
| C45 | Scotch Game | Braune Variation | | | |
| C45 | Scotch Game | Classical Variation | | | |
| C45 | Scotch Game | Classical Variation | Blackburne Attack | | |
| C45 | Scotch Game | Classical Variation | Intermezzo Variation | | |
| C45 | Scotch Game | Classical Variation | Millennium Variation | | |
| C45 | Scotch Game | Fraser Variation | | | |
| C45 | Scotch Game | Ghulam-Kassim Variation | | | |
| C45 | Scotch Game | Gottschall Variation | | | |
| C45 | Scotch Game | Horwitz Attack | | | |
| C45 | Scotch Game | Horwitz Attack | Blackburne Variation | | |
| C45 | Scotch Game | Malaniuk Variation | | | |
| C45 | Scotch Game | Meitner Variation | | | |
| C45 | Scotch Game | Mieses Variation | | | |
| C45 | Scotch Game | Modern Defense | | | |
| C45 | Scotch Game | Paulsen Attack | | | |
| C45 | Scotch Game | Paulsen Variation | | | |
| C45 | Scotch Game | Paulsen | Gunsberg Defense | | |
| C45 | Scotch Game | Potter Variation | | | |
| C45 | Scotch Game | Romanishin Variation | | | |
| C45 | Scotch Game | Rosenthal Variation | | | |
| C45 | Scotch Game | Steinitz Variation | | | |
| C45 | Scotch Game | Steinitz Variation | | | |
| C45 | Scotch Game | Tartakower Variation | | | |
| C46 | Three Knights Opening | | | | |
| C46 | Three Knights Opening | | | | |
| C46 | Three Knights Opening | Schlechter Variation | | | |
| C46 | Three Knights Opening | Steinitz Defense | | | |
| C46 | Three Knights Opening | Steinitz-Rosenthal Variation | | | |
| C46 | Three Knights Opening | Winawer Defense | | | |
| C47 | Four Knights Game | | | | |
| C47 | Four Knights Game | Gunsberg Variation | | | |
| C47 | Four Knights Game | Halloween Gambit | | | |
| C47 | Four Knights Game | Halloween Gambit | Oldtimer Variation | | |
| C47 | Four Knights Game | Halloween Gambit | Plasma Variation | | |
| C47 | Four Knights Game | Italian Variation | | | |
| C47 | Four Knights Game | Italian Variation | Noa Gambit | | |
| C47 | Four Knights Game | Scotch Variation | | | |
| C47 | Four Knights Game | Scotch Variation Accepted | | | |
| C47 | Four Knights Game | Scotch Variation | Belgrade Gambit | | |
| C47 | Four Knights Game | Scotch Variation | Belgrade Gambit | Modern Defense | |
| C47 | Four Knights Game | Scotch Variation | Krause Gambit | | |
| C47 | Four Knights Game | Scotch Variation | Krause Gambit | Leonhardt Defense | |
| C47 | Four Knights Game | Scotch Variation | Oxford Gambit | | |
| C47 | Four Knights Game | Scotch Variation | Schmid Defense | | |
| C48 | Four Knights Game | Spanish Variation | | | |
| C48 | Four Knights Game | Spanish Variation | Bardeleben Variation | | |
| C48 | Four Knights Game | Spanish Variation | Classical Variation | | |
| C48 | Four Knights Game | Spanish Variation | Ranken Variation | | |
| C48 | Four Knights Game | Spanish Variation | Rubinstein Variation | | |
| C48 | Four Knights Game | Spanish Variation | Rubinstein Variation | | |
| C48 | Four Knights Game | Spanish Variation | Rubinstein Variation | | |
| C48 | Four Knights Game | Spanish Variation | Rubinstein Variation Accepted | | |
| C48 | Four Knights Game | Spanish Variation | Rubinstein Variation | Henneberger Variation | |
| C48 | Four Knights Game | Spanish Variation | Rubinstein Variation | Marshall Gambit | |
| C48 | Four Knights Game | Spanish Variation | Rubinstein Variation | Marshall Variation | |
| C48 | Four Knights Game | Spanish Variation | Rubinstein Variation | Maróczy Variation | |
| C48 | Four Knights Game | Spanish Variation | Spielmann Variation | | |
| C49 | Four Knights Game | Spanish Variation | | | |
| C49 | Four Knights Game | Spanish Variation | Alatortsev Variation | | |
| C49 | Four Knights Game | Spanish Variation | Double Spanish | | |
| C49 | Four Knights Game | Spanish Variation | Double Spanish | | |
| C49 | Four Knights Game | Spanish Variation | Gunsberg Counterattack | | |
| C49 | Four Knights Game | Spanish Variation | Janowski Variation | | |
| C49 | Four Knights Game | Spanish Variation | Nimzowitsch Variation | | |
| C49 | Four Knights Game | Spanish Variation | Svenonius Variation | | |
| C49 | Four Knights Game | Spanish Variation | Symmetrical Variation | | |
| C49 | Four Knights Game | Spanish Variation | Symmetrical Variation | | |
| C49 | Four Knights Game | Spanish Variation | Symmetrical Variation | | |
| C49 | Four Knights Game | Spanish Variation | Symmetrical Variation | | |
| C49 | Four Knights Game | Spanish Variation | Symmetrical Variation | Blake Variation | |
| C49 | Four Knights Game | Spanish Variation | Symmetrical Variation | Metger Unpin | |
| C49 | Four Knights Game | Spanish Variation | Symmetrical Variation | Tarrasch Variation | |
| C50 | Four Knights Game | Italian Variation | | | |
| C50 | Italian Game | | | | |
| C50 | Italian Game | Anti-Fried Liver Defense | | | |
| C50 | Italian Game | Blackburne-Kostić Gambit | | | |
| C50 | Italian Game | Classical Variation | Albin Gambit | | |
| C50 | Italian Game | Deutz Gambit | | | |
| C50 | Italian Game | Giuoco Pianissimo | | | |
| C50 | Italian Game | Giuoco Pianissimo | | | |
| C50 | Italian Game | Giuoco Pianissimo | Canal Variation | | |
| C50 | Italian Game | Giuoco Pianissimo | Dubois Variation | | |
| C50 | Italian Game | Giuoco Pianissimo | Italian Four Knights Variation | | |
| C50 | Italian Game | Giuoco Pianissimo | Lucchini Gambit | | |
| C50 | Italian Game | Giuoco Pianissimo | Normal | | |
| C50 | Italian Game | Giuoco Piano | | | |
| C50 | Italian Game | Hungarian Defense | | | |
| C50 | Italian Game | Hungarian Defense | Tartakower Variation | | |
| C50 | Italian Game | Jerome Gambit | | | |
| C50 | Italian Game | Paris Defense | | | |
| C50 | Italian Game | Rosentreter Gambit | | | |
| C50 | Italian Game | Rousseau Gambit | | | |
| C51 | Italian Game | Evans Gambit | | | |
| C51 | Italian Game | Evans Gambit | | | |
| C51 | Italian Game | Evans Gambit Accepted | | | |
| C51 | Italian Game | Evans Gambit Declined | | | |
| C51 | Italian Game | Evans Gambit Declined | | | |
| C51 | Italian Game | Evans Gambit Declined | Cordel Variation | | |
| C51 | Italian Game | Evans Gambit Declined | Hicken Variation | | |
| C51 | Italian Game | Evans Gambit Declined | Hirschbach Variation | | |
| C51 | Italian Game | Evans Gambit Declined | Lange Variation | | |
| C51 | Italian Game | Evans Gambit Declined | Pavlov Variation | | |
| C51 | Italian Game | Evans Gambit Declined | Showalter Variation | | |
| C51 | Italian Game | Evans Gambit Declined | Vasquez Variation | | |
| C51 | Italian Game | Evans Gambit | Anderssen Variation | | |
| C51 | Italian Game | Evans Gambit | Anderssen Variation | Cordel Line | |
| C51 | Italian Game | Evans Gambit | Fontaine Countergambit | | |
| C51 | Italian Game | Evans Gambit | Fraser Attack | | |
| C51 | Italian Game | Evans Gambit | Fraser-Mortimer Attack | | |
| C51 | Italian Game | Evans Gambit | Göring Attack | | |
| C51 | Italian Game | Evans Gambit | Harding Variation | | |
| C51 | Italian Game | Evans Gambit | Hein Countergambit | | |
| C51 | Italian Game | Evans Gambit | Mayet Defense | | |
| C51 | Italian Game | Evans Gambit | McDonnell Defense | | |
| C51 | Italian Game | Evans Gambit | McDonnell Defense | Main Line | |
| C51 | Italian Game | Evans Gambit | Morphy Attack | | |
| C51 | Italian Game | Evans Gambit | Mortimer-Evans Gambit | | |
| C51 | Italian Game | Evans Gambit | Paulsen Variation | | |
| C51 | Italian Game | Evans Gambit | Steinitz Variation | | |
| C51 | Italian Game | Evans Gambit | Stone-Ware Variation | | |
| C51 | Italian Game | Evans Gambit | Ulvestad Variation | | |
| C52 | Italian Game | Evans Gambit | | | |
| C52 | Italian Game | Evans Gambit | Alapin-Steinitz Variation | | |
| C52 | Italian Game | Evans Gambit | Anderssen Defense | | |
| C52 | Italian Game | Evans Gambit | Bronstein Defense | | |
| C52 | Italian Game | Evans Gambit | Compromised Defense | | |
| C52 | Italian Game | Evans Gambit | Compromised Defense | Main Line | |
| C52 | Italian Game | Evans Gambit | Compromised Defense | Potter Variation | |
| C52 | Italian Game | Evans Gambit | Dufresne Defense | | |
| C52 | Italian Game | Evans Gambit | Johner Defense | | |
| C52 | Italian Game | Evans Gambit | Laroche Variation | | |
| C52 | Italian Game | Evans Gambit | Lasker Defense | | |
| C52 | Italian Game | Evans Gambit | Leonhardt Countergambit | | |
| C52 | Italian Game | Evans Gambit | Levenfish Variation | | |
| C52 | Italian Game | Evans Gambit | Main Line | | |
| C52 | Italian Game | Evans Gambit | Mieses Defense | | |
| C52 | Italian Game | Evans Gambit | Pierce Defense | | |
| C52 | Italian Game | Evans Gambit | Richardson Attack | | |
| C52 | Italian Game | Evans Gambit | Sanders-Alapin Variation | | |
| C52 | Italian Game | Evans Gambit | Slow Variation | | |
| C52 | Italian Game | Evans Gambit | Sokolsky Variation | | |
| C52 | Italian Game | Evans Gambit | Tartakower Attack | | |
| C52 | Italian Game | Evans Gambit | Waller Attack | | |
| C53 | Italian Game | Bird's Attack | | | |
| C53 | Italian Game | Classical Variation | | | |
| C53 | Italian Game | Classical Variation | Center Holding Variation | | |
| C53 | Italian Game | Classical Variation | Closed Variation | | |
| C53 | Italian Game | Classical Variation | Eisinger Variation | | |
| D00 | Queen's Pawn Game | Levitsky Attack | Welling Variation | | |
| C53 | Italian Game | Classical Variation | La Bourdonnais Variation | | |
| C53 | Italian Game | Classical Variation | Mestel Variation | | |
| C53 | Italian Game | Classical Variation | Tarrasch Variation | | |
| C54 | Italian Game | Classical Variation | | | |
| C54 | Italian Game | Classical Variation | Center Attack | | |
| C54 | Italian Game | Classical Variation | Ghulam-Kassim Variation | | |
| C54 | Italian Game | Classical Variation | Giuoco Pianissimo | | |
| C54 | Italian Game | Classical Variation | Giuoco Pianissimo | | |
| C54 | Italian Game | Classical Variation | Giuoco Pianissimo | | |
| C54 | Italian Game | Classical Variation | Giuoco Pianissimo | | |
| C54 | Italian Game | Classical Variation | Giuoco Pianissimo | | |
| C54 | Italian Game | Classical Variation | Giuoco Pianissimo | Albin Variation | |
| C54 | Italian Game | Classical Variation | Giuoco Pianissimo | Main Line | |
| C54 | Italian Game | Classical Variation | Giuoco Pianissimo | with a5 | |
| C54 | Italian Game | Classical Variation | Giuoco Pianissimo | with a6 | |
| C54 | Italian Game | Classical Variation | Giuoco Pianissimo | with a6 | |
| C54 | Italian Game | Classical Variation | Giuoco Pianissimo | with d6 | |
| C54 | Italian Game | Classical Variation | Giuoco Pianissimo | with h6 | |
| C54 | Italian Game | Classical Variation | Giuoco Pianissimo | with h6 | |
| C54 | Italian Game | Classical Variation | Greco Gambit | | |
| C54 | Italian Game | Classical Variation | Greco Gambit | Anderssen Variation | |
| C54 | Italian Game | Classical Variation | Greco Gambit | Greco Variation | |
| C54 | Italian Game | Classical Variation | Greco Gambit | Main Line | |
| C57 | Italian Game | Two Knights Defense | Lolli Attack | | |
| C54 | Italian Game | Classical Variation | Greco Gambit | Moeller-Bayonet Attack | |
| C54 | Italian Game | Classical Variation | Greco Gambit | Moeller-Therkatz Attack | |
| C54 | Italian Game | Classical Variation | Greco Gambit | Traditional Line | |
| C54 | Italian Game | Giuoco Piano | Aitken Variation | | |
| C54 | Italian Game | Giuoco Piano | Bernstein Variation | | |
| C54 | Italian Game | Giuoco Piano | Cracow Variation | | |
| C54 | Italian Game | Giuoco Piano | Greco's Attack | | |
| C54 | Italian Game | Giuoco Piano | Holzhausen Attack | | |
| C54 | Italian Game | Giuoco Piano | Krause Variation | | |
| C54 | Italian Game | Giuoco Piano | Rosentreter Variation | | |
| C54 | Italian Game | Giuoco Piano | Steinitz Variation | | |
| C54 | Italian Game | Giuoco Piano | Therkatz-Herzog Variation | | |
| C55 | Italian Game | Two Knights Defense | | | |
| C55 | Italian Game | Two Knights Defense | | | |
| C55 | Italian Game | Two Knights Defense | Modern Bishop's Opening | | |
| C55 | Italian Game | Two Knights Defense | Modern Bishop's Opening | | |
| C56 | Italian Game | Scotch Gambit | | | |
| C56 | Italian Game | Scotch Gambit | Anderssen Attack | | |
| C56 | Italian Game | Scotch Gambit | Anderssen Attack | Main Line | |
| C56 | Italian Game | Scotch Gambit | Canal Variation | | |
| C56 | Italian Game | Scotch Gambit | Double Gambit Accepted | | |
| C56 | Italian Game | Scotch Gambit | Janowski Defense | | |
| C56 | Italian Game | Scotch Gambit | Max Lange Attack | | |
| C56 | Italian Game | Scotch Gambit | Max Lange Attack | | |
| C56 | Italian Game | Scotch Gambit | Max Lange Attack Accepted | | |
| C56 | Italian Game | Scotch Gambit | Max Lange Attack | Long Variation | |
| C56 | Italian Game | Scotch Gambit | Max Lange Attack | Spielmann Defense | |
| C56 | Italian Game | Scotch Gambit | Nakhmanson Gambit | | |
| C56 | Italian Game | Scotch Gambit | Walbrodt-Baird Gambit | | |
| C56 | Italian Game | Scotch Gambit | de Riviere Defense | | |
| C56 | Italian Game | Scotch Invitation Declined | | | |
| C56 | Italian Game | Two Knights Defense | Keidansky Variation | | |
| C56 | Italian Game | Two Knights Defense | Max Lange Attack | | |
| C56 | Italian Game | Two Knights Defense | Max Lange Attack | Berger Variation | |
| C56 | Italian Game | Two Knights Defense | Max Lange Attack | Krause Variation | |
| C56 | Italian Game | Two Knights Defense | Max Lange Attack | Loman Defense | |
| C56 | Italian Game | Two Knights Defense | Max Lange Attack | Rubinstein Variation | |
| C56 | Italian Game | Two Knights Defense | Open Variation | | |
| C56 | Italian Game | Two Knights Defense | Perreux Variation | | |
| C56 | Italian Game | Two Knights Defense | Yurdansky Attack | | |
| C57 | Italian Game | Two Knights Defense | Fegatello Attack | Leonhardt Variation | |
| C57 | Italian Game | Two Knights Defense | Fried Liver Attack | | |
| C57 | Italian Game | Two Knights Defense | Fritz Variation | | |
| C57 | Italian Game | Two Knights Defense | Fritz | Gruber Variation | |
| C57 | Italian Game | Two Knights Defense | Kloss Gambit | | |
| C57 | Italian Game | Two Knights Defense | Knight Attack | | |
| C57 | Italian Game | Two Knights Defense | Knight Attack | Normal Variation | |
| C57 | Italian Game | Two Knights Defense | Pincus Variation | | |
| C57 | Italian Game | Two Knights Defense | Ponziani-Steinitz Gambit | | |
| C57 | Italian Game | Two Knights Defense | Traxler Counterattack | | |
| C57 | Italian Game | Two Knights Defense | Traxler Counterattack | Bishop Sacrifice Line | |
| C57 | Italian Game | Two Knights Defense | Traxler Counterattack | King March Line | |
| C57 | Italian Game | Two Knights Defense | Traxler Counterattack | Knight Sacrifice Line | |
| C57 | Italian Game | Two Knights Defense | Traxler Variation | Trencianske-Teplice Gambit | |
| C57 | Italian Game | Two Knights Defense | Ulvestad Variation | | |
| C57 | Italian Game | Two Knights Defense | Ulvestad Variation | Kurkin Gambit | |
| C58 | Italian Game | Two Knights Defense | | | |
| C58 | Italian Game | Two Knights Defense | Blackburne Variation | | |
| C58 | Italian Game | Two Knights Defense | Colman Variation | | |
| C58 | Italian Game | Two Knights Defense | Maróczy Variation | | |
| C58 | Italian Game | Two Knights Defense | Paoli Variation | | |
| C58 | Italian Game | Two Knights Defense | Polerio Defense | | |
| C58 | Italian Game | Two Knights Defense | Polerio Defense | Bishop Check Line | |
| C58 | Italian Game | Two Knights Defense | Polerio Defense | Bogoljubow Variation | |
| C58 | Italian Game | Two Knights Defense | Polerio Defense | Kieseritzky Variation | |
| C58 | Italian Game | Two Knights Defense | Polerio Defense | Yankovich Variation | |
| C59 | Italian Game | Two Knights Defense | Knorre Variation | | |
| C59 | Italian Game | Two Knights Defense | Polerio Defense | Göring Variation | |
| C59 | Italian Game | Two Knights Defense | Polerio Defense | Suhle Defense | |
| C59 | Italian Game | Two Knights Defense | Steinitz Variation | | |
| C60 | Ruy Lopez | | | | |
| C60 | Ruy Lopez | Alapin Defense | | | |
| C60 | Ruy Lopez | Alapin Defense | Alapin Gambit | | |
| C60 | Ruy Lopez | Brentano Gambit | | | |
| C60 | Ruy Lopez | Bulgarian Variation | | | |
| C60 | Ruy Lopez | Cozio Defense | | | |
| C60 | Ruy Lopez | Cozio Defense | Paulsen Variation | | |
| C60 | Ruy Lopez | Cozio Defense | Tartakower Gambit | | |
| C60 | Ruy Lopez | Fianchetto Defense | | | |
| C60 | Ruy Lopez | Fianchetto Defense | Kevitz Gambit | | |
| C60 | Ruy Lopez | Lucena Variation | | | |
| C60 | Ruy Lopez | Nürnberg Variation | | | |
| C60 | Ruy Lopez | Pollock Defense | | | |
| C60 | Ruy Lopez | Retreat Variation | | | |
| C60 | Ruy Lopez | Rotary-Albany Gambit | | | |
| C60 | Ruy Lopez | Spanish Countergambit | | | |
| C60 | Ruy Lopez | Spanish Countergambit | Harding Countergambit | Fricke Gambit | |
| C60 | Ruy Lopez | Spanish Countergambit | Harding Gambit | | |
| C60 | Ruy Lopez | Vinogradov Variation | | | |
| C61 | Ruy Lopez | Bird Variation | | | |
| C61 | Ruy Lopez | Bird Variation | Paulsen Variation | | |
| C62 | Ruy Lopez | Old Steinitz Defense | Semi-Duras Variation | | |
| C62 | Ruy Lopez | Steinitz Defense | | | |
| C62 | Ruy Lopez | Steinitz Defense | Center Gambit | | |
| C62 | Ruy Lopez | Steinitz Defense | Nimzowitsch Attack | | |
| C63 | Ruy Lopez | Schliemann Defense | | | |
| C63 | Ruy Lopez | Schliemann Defense | Classical Variation | | |
| C63 | Ruy Lopez | Schliemann Defense | Dyckhoff Variation | | |
| C63 | Ruy Lopez | Schliemann Defense | Exchange Variation | | |
| C63 | Ruy Lopez | Schliemann Defense | Jaenisch Gambit Accepted | | |
| C63 | Ruy Lopez | Schliemann Defense | Kostić Defense | | |
| C63 | Ruy Lopez | Schliemann Defense | Möhring Variation | | |
| C63 | Ruy Lopez | Schliemann Defense | Schönemann Attack | | |
| C63 | Ruy Lopez | Schliemann Defense | Tartakower Variation | | |
| C64 | Ruy Lopez | Classical Defense | Benelux Variation | | |
| C64 | Ruy Lopez | Classical Defense | Boden Variation | | |
| C64 | Ruy Lopez | Classical Defense | Zaitsev Variation | | |
| C64 | Ruy Lopez | Classical Variation | | | |
| C64 | Ruy Lopez | Classical Variation | Central Variation | | |
| C64 | Ruy Lopez | Classical Variation | Charousek Variation | | |
| C64 | Ruy Lopez | Classical Variation | Cordel Gambit | | |
| C64 | Ruy Lopez | Classical Variation | Konikowski Gambit | | |
| C64 | Ruy Lopez | Classical Variation | Modern Main Line | | |
| C64 | Ruy Lopez | Classical Variation | Spanish Wing Gambit | | |
| C65 | Ruy Lopez | Berlin Defense | | | |
| C65 | Ruy Lopez | Berlin Defense | | | |
| C65 | Ruy Lopez | Berlin Defense | Anderssen Variation | | |
| C65 | Ruy Lopez | Berlin Defense | Beverwijk Variation | | |
| C65 | Ruy Lopez | Berlin Defense | Duras Variation | | |
| C65 | Ruy Lopez | Berlin Defense | Fishing Pole Variation | | |
| C65 | Ruy Lopez | Berlin Defense | Kaufmann Variation | | |
| C65 | Ruy Lopez | Berlin Defense | Mortimer Trap | | |
| C65 | Ruy Lopez | Berlin Defense | Mortimer Variation | | |
| C65 | Ruy Lopez | Berlin Defense | Nyholm Attack | | |
| C65 | Ruy Lopez | Classical Variation | Zukertort Gambit | | |
| C65 | Ruy Lopez | Halloween Attack | | | |
| C66 | Ruy Lopez | Berlin Defense | Closed Bernstein Variation | | |
| C66 | Ruy Lopez | Berlin Defense | Closed Showalter Variation | | |
| C66 | Ruy Lopez | Berlin Defense | Closed Wolf Variation | | |
| C66 | Ruy Lopez | Berlin Defense | Hedgehog Variation | | |
| C66 | Ruy Lopez | Berlin Defense | Improved Steinitz Defense | | |
| C66 | Ruy Lopez | Berlin Defense | Tarrasch Trap | | |
| C66 | Ruy Lopez | Closed Berlin Defense | Chigorin Variation | | |
| C67 | Ruy Lopez | Berlin Defense | Berlin Wall | | |
| C67 | Ruy Lopez | Berlin Defense | Cordel Variation | | |
| C67 | Ruy Lopez | Berlin Defense | Minckwitz Variation | | |
| C67 | Ruy Lopez | Berlin Defense | Pillsbury Variation | | |
| C67 | Ruy Lopez | Berlin Defense | Rio Gambit Accepted | | |
| C67 | Ruy Lopez | Berlin Defense | Rio de Janeiro Variation | | |
| C67 | Ruy Lopez | Berlin Defense | Rio de Janeiro Variation | | |
| C67 | Ruy Lopez | Berlin Defense | Rosenthal Variation | | |
| C67 | Ruy Lopez | Berlin Defense | Trifunovic Variation | | |
| C67 | Ruy Lopez | Berlin Defense | Winawer Attack | | |
| C67 | Ruy Lopez | Berlin Defense | Zukertort Variation | | |
| C67 | Ruy Lopez | Berlin Defense | l'Hermet Variation | | |
| C67 | Ruy Lopez | Berlin Defense | l'Hermet Variation | Berlin Wall Defense | |
| C67 | Ruy Lopez | Berlin Defense | l'Hermet Variation | Westerinen Line | |
| C67 | Ruy Lopez | Open Berlin Defense | Showalter Variation | | |
| C67 | Ruy Lopez | Open Berlin Defense | l'Hermet Variation | | |
| C68 | Ruy Lopez | Exchange Variation | | | |
| C68 | Ruy Lopez | Exchange Variation | Alekhine Variation | | |
| C68 | Ruy Lopez | Exchange Variation | Keres Variation | | |
| C68 | Ruy Lopez | Exchange Variation | Lutikov Variation | | |
| D00 | Queen's Pawn Game | Levitsky Attack | | | |
| C68 | Ruy Lopez | Exchange Variation | Romanovsky Variation | | |
| C68 | Ruy Lopez | Exchange | Alekhine Variation | | |
| C69 | Ruy Lopez | Exchange Variation | Alapin Gambit | | |
| C69 | Ruy Lopez | Exchange Variation | Bronstein Variation | | |
| C69 | Ruy Lopez | Exchange Variation | Gligoric Variation | | |
| C69 | Ruy Lopez | Exchange Variation | King's Bishop Variation | | |
| C69 | Ruy Lopez | Exchange Variation | Normal Variation | | |
| C70 | Ruy Lopez | Bird's Defense Deferred | | | |
| C70 | Ruy Lopez | Morphy Defense | | | |
| C70 | Ruy Lopez | Morphy Defense | Alapin's Defense Deferred | | |
| C70 | Ruy Lopez | Morphy Defense | Caro Variation | | |
| C70 | Ruy Lopez | Morphy Defense | Classical Defense Deferred | | |
| C70 | Ruy Lopez | Morphy Defense | Cozio Defense | | |
| C70 | Ruy Lopez | Morphy Defense | Fianchetto Defense Deferred | | |
| C70 | Ruy Lopez | Morphy Defense | Graz Variation | | |
| C70 | Ruy Lopez | Morphy Defense | Norwegian Variation | | |
| C70 | Ruy Lopez | Morphy Defense | Norwegian Variation | Nightingale Gambit | |
| C70 | Ruy Lopez | Morphy Defense | Schliemann Defense Deferred | | |
| C70 | Ruy Lopez | Morphy Defense | Schliemann Defense Deferred | Jaenisch Gambit Deferred | |
| C71 | Ruy Lopez | Morphy Defense | Modern Steinitz Defense | | |
| C71 | Ruy Lopez | Morphy Defense | Modern Steinitz Defense | | |
| C71 | Ruy Lopez | Morphy Defense | Modern Steinitz Defense | | |
| C71 | Ruy Lopez | Noah's Ark Trap | | | |
| C72 | Ruy Lopez | Closed | Kecskemet Variation | | |
| C72 | Ruy Lopez | Morphy Defense | Modern Steinitz Defense | | |
| C73 | Ruy Lopez | Morphy Defense | Modern Steinitz Defense | | |
| C73 | Ruy Lopez | Morphy Defense | Modern Steinitz Defense | | |
| C74 | Ruy Lopez | Morphy Defense | Modern Steinitz Defense | | |
| C74 | Ruy Lopez | Morphy Defense | Modern Steinitz Defense | | |
| C74 | Ruy Lopez | Morphy Defense | Modern Steinitz Defense | Siesta Variation | |
| C75 | Ruy Lopez | Morphy Defense | Modern Steinitz Defense | | |
| C75 | Ruy Lopez | Morphy Defense | Modern Steinitz Defense | | |
| C76 | Ruy Lopez | Morphy Defense | Modern Steinitz Defense | Fianchetto Variation | |
| C77 | Ruy Lopez | Morphy Defense | Anderssen Variation | | |
| C77 | Ruy Lopez | Morphy Defense | Bayreuth Variation | | |
| C77 | Ruy Lopez | Morphy Defense | Duras Variation | | |
| C77 | Ruy Lopez | Morphy Defense | Jaffe Gambit | | |
| C77 | Ruy Lopez | Morphy Defense | Mackenzie Variation | | |
| C77 | Ruy Lopez | Morphy Defense | Tarrasch Variation | | |
| C77 | Ruy Lopez | Morphy Defense | Wormald Attack | | |
| C77 | Ruy Lopez | Wormald Attack | Grünfeld Variation | | |
| C78 | Ruy Lopez | Brix Variation | | | |
| C78 | Ruy Lopez | Central Countergambit | | | |
| C78 | Ruy Lopez | Morphy Defense | | | |
| C78 | Ruy Lopez | Morphy Defense | | | |
| C78 | Ruy Lopez | Morphy Defense | Arkhangelsk Variation | | |
| C78 | Ruy Lopez | Morphy Defense | Neo-Arkhangelsk Variation | | |
| C78 | Ruy Lopez | Morphy Defense | Wing Attack | | |
| C78 | Ruy Lopez | Rabinovich Variation | | | |
| C79 | Ruy Lopez | Morphy Defense | Steinitz Deferred | | |
| C79 | Ruy Lopez | Morphy Defense | Steinitz Deferred | | |
| C79 | Ruy Lopez | Steinitz Defense Deferred | Boleslavsky Variation | | |
| C79 | Ruy Lopez | Steinitz Defense Deferred | Lipnitsky Variation | | |
| D00 | Queen's Pawn Game | Mason Attack | | | |
| C80 | Ruy Lopez | Morphy Defense | Tartakower Variation | | |
| C80 | Ruy Lopez | Open | | | |
| C80 | Ruy Lopez | Open | | | |
| C80 | Ruy Lopez | Open | | | |
| C80 | Ruy Lopez | Open | | | |
| C80 | Ruy Lopez | Open | Berger Variation | | |
| C80 | Ruy Lopez | Open | Bernstein Variation | | |
| C80 | Ruy Lopez | Open | Bernstein Variation | Luther Line | |
| C80 | Ruy Lopez | Open | Friess Attack | | |
| C80 | Ruy Lopez | Open | Harksen Gambit | | |
| C80 | Ruy Lopez | Open | Karpov Gambit | | |
| C80 | Ruy Lopez | Open | Knorre Variation | | |
| C80 | Ruy Lopez | Open | Main Line | | |
| C80 | Ruy Lopez | Open | Richter Variation | | |
| C80 | Ruy Lopez | Open | Riga Variation | | |
| C80 | Ruy Lopez | Open | Schlechter Defense | | |
| C80 | Ruy Lopez | Open | Skipworth Gambit | | |
| C80 | Ruy Lopez | Open | Zukertort Variation | | |
| C81 | Ruy Lopez | Open | Howell Attack | | |
| C81 | Ruy Lopez | Open | Howell Attack | | |
| C81 | Ruy Lopez | Open | Howell Attack | Ekstrom Variation | |
| C82 | Ruy Lopez | Open | | | |
| C82 | Ruy Lopez | Open | Berlin Variation | | |
| C82 | Ruy Lopez | Open | Dilworth Variation | | |
| C82 | Ruy Lopez | Open | Italian Variation | | |
| C82 | Ruy Lopez | Open | Motzko Attack | | |
| C82 | Ruy Lopez | Open | Motzko Attack | Nenarokov Variation | |
| C82 | Ruy Lopez | Open | St. Petersburg Variation | | |
| C83 | Ruy Lopez | Open | Breslau Variation | | |
| C83 | Ruy Lopez | Open | Classical Defense | | |
| C83 | Ruy Lopez | Open | Classical Defense | Main Line | |
| C83 | Ruy Lopez | Open | Malkin Variation | | |
| C83 | Ruy Lopez | Open | Tarrasch Trap | | |
| C84 | Ruy Lopez | Closed | | | |
| C84 | Ruy Lopez | Closed | Basque Gambit | | |
| C84 | Ruy Lopez | Closed | Center Attack | | |
| C84 | Ruy Lopez | Closed | Center Attack | Basque Gambit | |
| C84 | Ruy Lopez | Closed | Martinez Variation | | |
| C84 | Ruy Lopez | Closed | Morphy Attack | | |
| C85 | Ruy Lopez | Closed | Delayed Exchange | | |
| C86 | Ruy Lopez | Closed | Worrall Attack | | |
| C86 | Ruy Lopez | Closed | Worrall Attack | Castling Line | |
| C86 | Ruy Lopez | Closed | Worrall Attack | Delayed Castling Line | |
| C87 | Ruy Lopez | Closed | Averbakh Variation | | |
| C88 | Ruy Lopez | Closed | | | |
| C88 | Ruy Lopez | Closed | | | |
| C88 | Ruy Lopez | Closed | Alekhine Gambit | | |
| C88 | Ruy Lopez | Closed | Anti-Marshall | | |
| C88 | Ruy Lopez | Closed | Balla Variation | | |
| C88 | Ruy Lopez | Closed | Leonhardt Variation | | |
| C88 | Ruy Lopez | Closed | Rosen Attack | | |
| C88 | Ruy Lopez | Closed | Trajkovic Counterattack | | |
| C88 | Ruy Lopez | Noah's Ark Trap | | | |
| C89 | Ruy Lopez | Marshall Attack | | | |
| C89 | Ruy Lopez | Marshall Attack | Main Line | | |
| C89 | Ruy Lopez | Marshall Attack | Main Line | Spassky Variation | |
| C89 | Ruy Lopez | Marshall Attack | Modern Main Line | | |
| C89 | Ruy Lopez | Marshall Attack | Modern Variation | | |
| C89 | Ruy Lopez | Marshall Attack | Original Marshall Attack | | |
| C89 | Ruy Lopez | Marshall Attack | Re3 Variation | | |
| C89 | Ruy Lopez | Marshall Attack | Steiner Variation | | |
| C90 | Ruy Lopez | Closed | | | |
| C90 | Ruy Lopez | Closed | Lutikov Variation | | |
| C90 | Ruy Lopez | Closed | Pilnik Variation | | |
| C90 | Ruy Lopez | Closed | Suetin Variation | | |
| C91 | Ruy Lopez | Closed | Bogoljubow Variation | | |
| C91 | Ruy Lopez | Closed | Yates Variation | | |
| C91 | Ruy Lopez | Closed | Yates Variation | Short Attack | |
| C92 | Ruy Lopez | Closed | | | |
| C92 | Ruy Lopez | Closed | Flohr System | | |
| C92 | Ruy Lopez | Closed | Karpov Variation | | |
| C92 | Ruy Lopez | Closed | Kholmov Variation | | |
| C92 | Ruy Lopez | Closed | Smyslov-Breyer-Zaitsev Hybrid | | |
| C92 | Ruy Lopez | Closed | Zaitsev System | | |
| C93 | Ruy Lopez | Closed | Smyslov Defense | | |
| C94 | Ruy Lopez | Closed | Breyer Defense | | |
| C94 | Ruy Lopez | Closed | Breyer Defense | Quiet Variation | |
| C95 | Ruy Lopez | Closed | Breyer | | |
| C95 | Ruy Lopez | Closed | Breyer Defense | | |
| D00 | Queen's Pawn Game | Stonewall Attack | | | |
| C95 | Ruy Lopez | Closed | Breyer Defense | | |
| C95 | Ruy Lopez | Closed | Breyer Defense | Zaitsev Hybrid | |
| C96 | Ruy Lopez | Closed | Borisenko Variation | | |
| C96 | Ruy Lopez | Closed | Chigorin Defense | | |
| C96 | Ruy Lopez | Closed | Chigorin Defense | | |
| C96 | Ruy Lopez | Closed | Chigorin Defense | Gajewski Gambit | |
| C96 | Ruy Lopez | Closed | Keres Defense | | |
| C96 | Ruy Lopez | Closed | Rossolimo Defense | | |
| C97 | Ruy Lopez | Closed | Chigorin Defense | | |
| C97 | Ruy Lopez | Closed | Chigorin Defense | | |
| C97 | Ruy Lopez | Closed | Chigorin | Yugoslav System | |
| C98 | Ruy Lopez | Closed | Chigorin Defense | | |
| C98 | Ruy Lopez | Closed | Chigorin Defense | | |
| C99 | Ruy Lopez | Closed | Chigorin Defense | Panov System | |
| D00 | Amazon Attack | | | | |
| D00 | Blackmar-Diemer Gambit | | | | |
| D00 | Blackmar-Diemer Gambit | | | | |
| D00 | Blackmar-Diemer Gambit Accepted | | | | |
| D00 | Blackmar-Diemer Gambit Accepted | Bogoljubow Defense | | | |
| D00 | Blackmar-Diemer Gambit Accepted | Bogoljubow Defense | Kloss Attack | | |
| D00 | Blackmar-Diemer Gambit Accepted | Bogoljubow Defense | Mad Dog Attack | | |
| D00 | Blackmar-Diemer Gambit Accepted | Bogoljubow Defense | Nimzowitsch Attack | | |
| D00 | Blackmar-Diemer Gambit Accepted | Bogoljubow Defense | Studier Attack | | |
| D00 | Blackmar-Diemer Gambit Accepted | Euwe Defense | | | |
| D00 | Blackmar-Diemer Gambit Accepted | Euwe Defense | Zilbermints Gambit | | |
| D00 | Blackmar-Diemer Gambit Accepted | Gunderam Defense | | | |
| D00 | Blackmar-Diemer Gambit Accepted | Gunderam Defense | Stader Variation | | |
| D00 | Blackmar-Diemer Gambit Accepted | Holwell Defense | | | |
| D00 | Blackmar-Diemer Gambit Accepted | Kaulich Defense | | | |
| D00 | Blackmar-Diemer Gambit Accepted | Pietrowsky Defense | | | |
| D00 | Blackmar-Diemer Gambit Accepted | Ritter Defense | | | |
| D00 | Blackmar-Diemer Gambit Accepted | Ryder Gambit | | | |
| D00 | Blackmar-Diemer Gambit Accepted | Schlutter Defense | | | |
| D00 | Blackmar-Diemer Gambit Accepted | Teichmann Defense | | | |
| D00 | Blackmar-Diemer Gambit Accepted | Teichmann Defense | Ciesielski Variation | | |
| D00 | Blackmar-Diemer Gambit Accepted | Teichmann Defense | Classical Variation | | |
| D00 | Blackmar-Diemer Gambit Accepted | Teichmann Defense | Seidel-Hall Attack | | |
| D00 | Blackmar-Diemer Gambit Accepted | Ziegler Defense | | | |
| D00 | Blackmar-Diemer Gambit Declined | Brombacher Countergambit | | | |
| D00 | Blackmar-Diemer Gambit Declined | Elbert Countergambit | | | |
| D00 | Blackmar-Diemer Gambit Declined | Gedult Defense | | | |
| D00 | Blackmar-Diemer Gambit Declined | Lamb Defense | | | |
| D00 | Blackmar-Diemer Gambit Declined | Langeheinicke Defense | | | |
| D00 | Blackmar-Diemer Gambit Declined | O'Kelly Defense | | | |
| D00 | Blackmar-Diemer Gambit Declined | Vienna Defense | | | |
| D00 | Blackmar-Diemer Gambit Declined | Weinsbach Defense | | | |
| D00 | Blackmar-Diemer Gambit | Blackmar Gambit | | | |
| D00 | Blackmar-Diemer Gambit | Diemer-Rosenberg Attack | | | |
| D00 | Blackmar-Diemer Gambit | Fritz Attack | | | |
| D00 | Blackmar-Diemer Gambit | Lemberger Countergambit | | | |
| D00 | Blackmar-Diemer Gambit | Lemberger Countergambit | Endgame Variation | | |
| D00 | Blackmar-Diemer Gambit | Lemberger Countergambit | Lange Gambit | | |
| D00 | Blackmar-Diemer Gambit | Lemberger Countergambit | Rasmussen Attack | | |
| D00 | Blackmar-Diemer Gambit | Lemberger Countergambit | Sneiders Attack | | |
| D00 | Blackmar-Diemer Gambit | Lemberger Countergambit | Soller Attack | | |
| D00 | Blackmar-Diemer Gambit | Netherlands Variation | | | |
| D00 | Blackmar-Diemer Gambit | Rasa-Studier Gambit | | | |
| D00 | Blackmar-Diemer Gambit | Reversed Albin Countergambit | | | |
| D00 | Blackmar-Diemer Gambit | Zeller Defense | | | |
| D00 | Blackmar-Diemer Gambit | Zeller Defense | Soller Attack | | |
| D00 | Blackmar-Diemer Gambit | von Popiel Gambit | | | |
| D00 | Blackmar-Diemer Gambit | von Popiel Gambit | Zilbermints Variation | | |
| D00 | Queen's Pawn Game | | | | |
| D00 | Queen's Pawn Game | | | | |
| D00 | Queen's Pawn Game | | | | |
| D00 | Queen's Pawn Game | Accelerated London System | | | |
| D00 | Queen's Pawn Game | Accelerated London System | Steinitz Countergambit | | |
| D00 | Queen's Pawn Game | Accelerated London System | Steinitz Countergambit Accepted | | |
| D00 | Queen's Pawn Game | Accelerated London System | Steinitz Countergambit | Morris Countergambit | |
| D00 | Queen's Pawn Game | Accelerated London System | Steinitz Countergambit | Morris Countergambit Accepted | |
| D00 | Queen's Pawn Game | Chigorin Variation | | | |
| D00 | Queen's Pawn Game | Chigorin Variation | | | |
| D00 | Queen's Pawn Game | Chigorin Variation | Alburt Defense | | |
| D00 | Queen's Pawn Game | Chigorin Variation | Anti-Veresov | | |
| D00 | Queen's Pawn Game | Chigorin Variation | Fianchetto Defense | | |
| D00 | Queen's Pawn Game | Chigorin Variation | Irish Gambit | | |
| D00 | Queen's Pawn Game | Chigorin Variation | Shaviliuk Gambit | | |
| D00 | Queen's Pawn Game | Chigorin Variation | Shropshire Defense | | |
| D00 | Queen's Pawn Game | Hübsch Gambit | | | |
| D01 | Rapport-Jobava System | | | | |
| D01 | Rapport-Jobava System | | | | |
| D01 | Rapport-Jobava System | | | | |
| D01 | Rapport-Jobava System, with e6 | | | | |
| D01 | Richter-Veresov Attack | | | | |
| D01 | Richter-Veresov Attack | | | | |
| D01 | Richter-Veresov Attack | Boyce Defense | | | |
| D01 | Richter-Veresov Attack | Malich Gambit | | | |
| D01 | Richter-Veresov Attack | Richter Variation | | | |
| D01 | Richter-Veresov Attack | Two Knights System | | | |
| D01 | Richter-Veresov Attack | Two Knights System | Grünfeld Defense | | |
| D01 | Richter-Veresov Attack | Veresov Variation | | | |
| D02 | London System | Poisoned Pawn Variation | | | |
| D02 | Queen's Gambit Declined | Baltic Defense | Pseudo-Slav | | |
| D02 | Queen's Pawn Game | Anti-Torre | | | |
| D02 | Queen's Pawn Game | Chandler Gambit | | | |
| D02 | Queen's Pawn Game | Chigorin Variation | | | |
| D02 | Queen's Pawn Game | Krause Variation | | | |
| D02 | Queen's Pawn Game | Levitsky Attack | Euwe Variation | Modern Line | |
| D02 | Queen's Pawn Game | London System | | | |
| D02 | Queen's Pawn Game | London System | Pterodactyl Variation | | |
| D02 | Queen's Pawn Game | London System | with e6 | | |
| D02 | Queen's Pawn Game | Symmetrical Variation | | | |
| D02 | Queen's Pawn Game | Symmetrical Variation | Pseudo-Catalan | | |
| D02 | Queen's Pawn Game | Zilbermints Countergambit | | | |
| D02 | Queen's Pawn Game | Zukertort Variation | | | |
| D03 | Queen's Pawn Game | Torre Attack | | | |
| D03 | Queen's Pawn Game | Torre Attack | Gossip Variation | | |
| D03 | Queen's Pawn Game | Torre Attack | Grünfeld Variation | | |
| D04 | Queen's Pawn Game | Colle System | | | |
| D04 | Queen's Pawn Game | Colle System | Anti-Colle | | |
| D04 | Queen's Pawn Game | Colle System | Grünfeld Formation | | |
| D05 | Queen's Pawn Game | Colle System | | | |
| D05 | Queen's Pawn Game | Colle System | | | |
| D05 | Queen's Pawn Game | Colle System | Traditional Colle | | |
| D05 | Queen's Pawn Game | Zukertort Variation | | | |
| D05 | Rubinstein Opening | | | | |
| D05 | Rubinstein Opening | Bogoljubow Defense | | | |
| D05 | Rubinstein Opening | Classical Defense | | | |
| D05 | Rubinstein Opening | Semi-Slav Defense | | | |
| D06 | Queen's Gambit | | | | |
| D06 | Queen's Gambit Declined | Austrian Attack | Salvio Countergambit | | |
| D06 | Queen's Gambit Declined | Austrian Defense | | | |
| D06 | Queen's Gambit Declined | Austrian Defense | Gusev Countergambit | | |
| D06 | Queen's Gambit Declined | Austrian Defense | Haberditz Variation | | |
| D06 | Queen's Gambit Declined | Baltic Defense | | | |
| D06 | Queen's Gambit Declined | Baltic Defense | Argentinian Gambit | | |
| D06 | Queen's Gambit Declined | Baltic Defense | Pseudo-Chigorin | | |
| D06 | Queen's Gambit Declined | Baltic Defense | Queen Attack | | |
| D06 | Queen's Gambit Declined | Baltic Defense | Queen Attack Deferred | | |
| D06 | Queen's Gambit Declined | Marshall Defense | | | |
| D06 | Queen's Gambit Declined | Marshall Defense | Tan Gambit | | |
| D06 | Queen's Gambit Declined | Zilbermints Gambit | | | |
| D07 | Queen's Gambit Declined | Chigorin Defense | | | |
| D07 | Queen's Gambit Declined | Chigorin Defense | | | |
| D07 | Queen's Gambit Declined | Chigorin Defense | | | |
| D07 | Queen's Gambit Declined | Chigorin Defense | Exchange Variation | | |
| D07 | Queen's Gambit Declined | Chigorin Defense | Exchange Variation | Costa's Line | |
| D07 | Queen's Gambit Declined | Chigorin Defense | Janowski Variation | | |
| D07 | Queen's Gambit Declined | Chigorin Defense | Lazard Gambit | | |
| D07 | Queen's Gambit Declined | Chigorin Defense | Main Line | | |
| D07 | Queen's Gambit Declined | Chigorin Defense | Main Line | Alekhine Variation | |
| D07 | Queen's Gambit Declined | Chigorin Defense | Modern Gambit | | |
| D07 | Queen's Gambit Declined | Chigorin Defense | Tartakower Gambit | | |
| D08 | Queen's Gambit Declined | Albin Countergambit | | | |
| D08 | Queen's Gambit Declined | Albin Countergambit | Balogh Variation | | |
| D08 | Queen's Gambit Declined | Albin Countergambit | Janowski Variation | | |
| D08 | Queen's Gambit Declined | Albin Countergambit | Krenosz Variation | | |
| D08 | Queen's Gambit Declined | Albin Countergambit | Lasker Trap | | |
| D08 | Queen's Gambit Declined | Albin Countergambit | Modern Line | | |
| D08 | Queen's Gambit Declined | Albin Countergambit | Normal Line | | |
| D08 | Queen's Gambit Declined | Albin Countergambit | Tartakower Defense | | |
| D09 | Queen's Gambit Declined | Albin Countergambit | Fianchetto Variation | | |
| D09 | Queen's Gambit Declined | Albin Countergambit | Fianchetto Variation | Be6 Line | |
| D09 | Queen's Gambit Declined | Albin Countergambit | Fianchetto Variation | Bf5 Line | |
| D09 | Queen's Gambit Declined | Albin Countergambit | Fianchetto Variation | Bg4 Line | |
| D10 | Slav Defense | | | | |
| D10 | Slav Defense | | | | |
| D10 | Slav Defense | | | | |
| D10 | Slav Defense | Diemer Gambit | | | |
| D10 | Slav Defense | Exchange Variation | | | |
| D10 | Slav Defense | Exchange Variation | Boor Attack | | |
| D10 | Slav Defense | Slav Gambit | Alekhine Attack | | |
| D10 | Slav Defense | Winawer Countergambit | | | |
| D10 | Slav Defense | Winawer Countergambit | Anti-Winawer Gambit | | |
| D11 | Slav Defense | Bonet Gambit | | | |
| D11 | Slav Defense | Breyer Variation | | | |
| D11 | Slav Defense | Modern Line | | | |
| D11 | Slav Defense | Quiet Variation | | | |
| D11 | Slav Defense | Quiet Variation | Pin Defense | | |
| D12 | Slav Defense | Quiet Variation | Amsterdam Variation | | |
| D12 | Slav Defense | Quiet Variation | Landau Variation | | |
| D12 | Slav Defense | Quiet Variation | Schallopp Defense | | |
| D13 | Slav Defense | Exchange Variation | | | |
| D13 | Slav Defense | Exchange Variation | Schallopp Variation | | |
| D14 | Slav Defense | Exchange Variation | Symmetrical Line | | |
| D14 | Slav Defense | Exchange Variation | Trifunovic Variation | | |
| D15 | Slav Defense | Alekhine Variation | | | |
| D15 | Slav Defense | Chebanenko Variation | | | |
| D15 | Slav Defense | Chebanenko Variation | Advance System | | |
| D15 | Slav Defense | Geller Gambit | | | |
| D15 | Slav Defense | Geller Gambit | | | |
| D15 | Slav Defense | Schlechter Variation | | | |
| D15 | Slav Defense | Süchting Variation | | | |
| D15 | Slav Defense | Three Knights Variation | | | |
| D15 | Slav Defense | Two Knights Attack | | | |
| D16 | Slav Defense | Alapin Variation | | | |
| D16 | Slav Defense | Smyslov Variation | | | |
| D16 | Slav Defense | Soultanbeieff Variation | | | |
| D16 | Slav Defense | Steiner Variation | | | |
| D17 | Slav Defense | Czech Variation | | | |
| D17 | Slav Defense | Czech Variation | Bled Attack | | |
| D17 | Slav Defense | Czech Variation | Carlsbad Variation | | |
| D17 | Slav Defense | Czech Variation | Carlsbad Variation | Morozevich Variation | |
| D17 | Slav Defense | Czech Variation | Krause Attack | | |
| D17 | Slav Defense | Czech Variation | Krause Attack | Fazekas Gambit | |
| D17 | Slav Defense | Czech Variation | Wiesbaden Variation | | |
| D17 | Slav Defense | Czech Variation | Wiesbaden Variation | Sharp Line | |
| D18 | Slav Defense | Czech Variation | Classical System | | |
| D18 | Slav Defense | Czech Variation | Lasker Variation | | |
| D19 | Slav Defense | Czech Variation | Classical System | Main Line | |
| D19 | Slav Defense | Czech Variation | Dutch Variation | | |
| D19 | Slav Defense | Czech Variation | Dutch Variation | Sämisch Variation | |
| D20 | Queen's Gambit Accepted | | | | |
| D20 | Queen's Gambit Accepted | Accelerated Mannheim Variation | | | |
| D20 | Queen's Gambit Accepted | Central Variation | Alekhine System | | |
| D20 | Queen's Gambit Accepted | Central Variation | Greco Variation | | |
| D20 | Queen's Gambit Accepted | Central Variation | McDonnell Defense | | |
| D20 | Queen's Gambit Accepted | Central Variation | McDonnell Defense | Somov Gambit | |
| D20 | Queen's Gambit Accepted | Central Variation | Modern Defense | | |
| D20 | Queen's Gambit Accepted | Central Variation | Rubinstein Defense | | |
| D20 | Queen's Gambit Accepted | Central Variation | Rubinstein Defense | Yefimov Gambit | |
| D20 | Queen's Gambit Accepted | Linares Variation | | | |
| D20 | Queen's Gambit Accepted | Old Variation | | | |
| D20 | Queen's Gambit Accepted | Old Variation | Billinger Gambit | | |
| D20 | Queen's Gambit Accepted | Old Variation | Christensen Gambit | | |
| D20 | Queen's Gambit Accepted | Old Variation | Korchnoi Gambit | | |
| D20 | Queen's Gambit Accepted | Old Variation | Novikov Gambit | | |
| D20 | Queen's Gambit Accepted | Saduleto Variation | | | |
| D20 | Queen's Gambit Accepted | Schwartz Defense | | | |
| E08 | Catalan Opening | Closed | | | |
| D21 | Queen's Gambit Accepted | Alekhine Defense | Borisenko-Furman Variation | | |
| D21 | Queen's Gambit Accepted | Godes Variation | | | |
| D21 | Queen's Gambit Accepted | Gunsberg Defense | | | |
| D21 | Queen's Gambit Accepted | Normal Variation | | | |
| D21 | Queen's Gambit Accepted | Rosenthal Variation | | | |
| D21 | Queen's Gambit Accepted | Slav Gambit | | | |
| D22 | Queen's Gambit Accepted | Alekhine Defense | | | |
| D22 | Queen's Gambit Accepted | Alekhine Defense | Alatortsev Variation | | |
| D22 | Queen's Gambit Accepted | Alekhine Defense | Haberditz Variation | | |
| D23 | Queen's Gambit Accepted | | | | |
| D23 | Queen's Gambit Accepted | Mannheim Variation | | | |
| D24 | Queen's Gambit Accepted | Bogoljubow Defense | | | |
| D24 | Queen's Gambit Accepted | Gunsberg Defense | Prianishenmo Gambit | | |
| D24 | Queen's Gambit Accepted | Showalter Variation | | | |
| D25 | Queen's Gambit Accepted | Janowski-Larsen Variation | | | |
| D25 | Queen's Gambit Accepted | Normal Variation | | | |
| D25 | Queen's Gambit Accepted | Smyslov Variation | | | |
| D25 | Queen's Gambit Accepted | Winawer Defense | | | |
| D26 | Queen's Gambit Accepted | Classical Defense | | | |
| D26 | Queen's Gambit Accepted | Classical Defense | Normal Line | | |
| D26 | Queen's Gambit Accepted | Classical Defense | Steinitz Variation | Development Variation | |
| D26 | Queen's Gambit Accepted | Classical Defense | Steinitz Variation | Exchange Variation | |
| D26 | Queen's Gambit Accepted | Classical | Furman Variation | | |
| D26 | Queen's Gambit Accepted | Normal Variation | Traditional System | | |
| D27 | Queen's Gambit Accepted | Classical Defense | Main Line | | |
| D27 | Queen's Gambit Accepted | Classical Defense | Rubinstein Variation | | |
| E08 | Catalan Opening | Closed | | | |
| D27 | Queen's Gambit Accepted | Classical Defense | Russian Gambit | | |
| D27 | Queen's Gambit Accepted | Furman Variation | | | |
| D28 | Queen's Gambit Accepted | Classical Defense | Alekhine System | | |
| D28 | Queen's Gambit Accepted | Classical Defense | Alekhine System | | |
| D29 | Queen's Gambit Accepted | Classical Defense | Alekhine System | Main Line | |
| D29 | Queen's Gambit Accepted | Classical Defense | Alekhine System | Smyslov Variation | |
| D30 | Queen's Gambit Declined | | | | |
| D30 | Queen's Gambit Declined | Capablanca Variation | | | |
| D30 | Queen's Gambit Declined | Capablanca Variation | | | |
| D30 | Queen's Gambit Declined | Semmering Variation | | | |
| D30 | Queen's Gambit Declined | Spielmann Variation | | | |
| D30 | Queen's Gambit Declined | Stonewall Variation | | | |
| D30 | Queen's Gambit Declined | Tarrasch Defense | Pseudo-Tarrasch | | |
| D30 | Queen's Gambit Declined | Tarrasch Defense | Pseudo-Tarrasch Bishop Attack | | |
| D30 | Queen's Gambit Declined | Traditional Variation | | | |
| D30 | Queen's Gambit Declined | Vienna Variation | | | |
| D30 | Semi-Slav Defense | Quiet Variation | | | |
| D30 | Semi-Slav Defense | Quiet Variation | | | |
| D31 | Queen's Gambit Declined | Alapin Variation | | | |
| D31 | Queen's Gambit Declined | Charousek Variation | | | |
| D31 | Queen's Gambit Declined | Charousek Variation | Miladinovic Gambit | | |
| D31 | Queen's Gambit Declined | Janowski Variation | | | |
| D31 | Queen's Gambit Declined | Queen's Knight Variation | | | |
| D31 | Queen's Gambit Declined | Semi-Slav | Abrahams Variation | | |
| D31 | Queen's Gambit Declined | Semi-Slav | Junge Variation | | |
| D31 | Queen's Gambit Declined | Semi-Slav | Koomen Variation | | |
| D31 | Semi-Slav Defense | Noteboom Variation | Abrahams Variation | | |
| D31 | Semi-Slav Defense | Noteboom Variation | Anti-Noteboom Gambit | | |
| D31 | Semi-Slav Defense | Noteboom Variation | Anti-Noteboom Variation | | |
| D31 | Semi-Slav Defense | Noteboom Variation | Anti-Noteboom Variation | Belyavsky Line | |
| D32 | Queen's Gambit Declined | Tarrasch Defense | | | |
| D32 | Tarrasch Defense | | | | |
| D32 | Tarrasch Defense | Grünfeld Gambit | | | |
| D32 | Tarrasch Defense | Marshall Gambit | | | |
| D32 | Tarrasch Defense | Schara Gambit | | | |
| D32 | Tarrasch Defense | Symmetrical Variation | | | |
| D32 | Tarrasch Defense | Tarrasch Gambit | | | |
| D32 | Tarrasch Defense | Two Knights Variation | | | |
| D32 | Tarrasch Defense | von Hennig Gambit | | | |
| D33 | Tarrasch Defense | Dubov Tarrasch | | | |
| D33 | Tarrasch Defense | Prague Variation | | | |
| D33 | Tarrasch Defense | Rubinstein System | | | |
| D33 | Tarrasch Defense | Swedish Variation | | | |
| D33 | Tarrasch Defense | Swedish Variation | Central Break | | |
| D33 | Tarrasch Defense | Wagner Variation | | | |
| D34 | Queen's Gambit Declined | Tarrasch Defense | Stoltz Variation | | |
| D34 | Tarrasch Defense | Classical Variation | | | |
| D34 | Tarrasch Defense | Classical Variation | Advance Variation | | |
| D34 | Tarrasch Defense | Classical Variation | Bogoljubow Variation | | |
| D34 | Tarrasch Defense | Classical Variation | Carlsbad Variation | | |
| D34 | Tarrasch Defense | Classical Variation | Chandler Variation | | |
| D34 | Tarrasch Defense | Classical Variation | Classical Tarrasch Gambit | | |
| D34 | Tarrasch Defense | Classical Variation | Endgame Variation | | |
| D34 | Tarrasch Defense | Classical Variation | Main Line | | |
| D34 | Tarrasch Defense | Classical Variation | Petursson Variation | | |
| D34 | Tarrasch Defense | Classical Variation | Réti Variation | | |
| D34 | Tarrasch Defense | Classical Variation | Spassky Variation | | |
| D34 | Tarrasch Defense | Prague Variation | Main Line | | |
| D35 | Queen's Gambit Declined | Exchange Variation | | | |
| D35 | Queen's Gambit Declined | Exchange Variation | Chameleon Variation | | |
| D35 | Queen's Gambit Declined | Exchange Variation | Positional Variation | | |
| D35 | Queen's Gambit Declined | Exchange Variation | Positional Variation | | |
| D35 | Queen's Gambit Declined | Exchange Variation | Sämisch Variation | | |
| D35 | Queen's Gambit Declined | Harrwitz Attack | | | |
| D35 | Queen's Gambit Declined | Normal Defense | | | |
| D36 | Queen's Gambit Declined | Exchange Variation | Reshevsky Variation | | |
| D37 | Queen's Gambit Declined | Barmen Variation | | | |
| D37 | Queen's Gambit Declined | Harrwitz Attack | | | |
| D37 | Queen's Gambit Declined | Harrwitz Attack | | | |
| D37 | Queen's Gambit Declined | Harrwitz Attack | | | |
| D37 | Queen's Gambit Declined | Harrwitz Attack | Fianchetto Defense | | |
| D37 | Queen's Gambit Declined | Harrwitz Attack | Main Line | | |
| D37 | Queen's Gambit Declined | Harrwitz Attack | Orthodox Defense | | |
| D37 | Queen's Gambit Declined | Harrwitz Attack | Two Knights Defense | | |
| D37 | Queen's Gambit Declined | Harrwitz Attack | Two Knights Defense | Blockade Line | |
| D51 | Queen's Gambit Declined | Manhattan Variation | | | |
| D37 | Queen's Gambit Declined | Knight Defense | Alekhine Gambit | | |
| D37 | Queen's Gambit Declined | Miles Variation | | | |
| D37 | Queen's Gambit Declined | Three Knights Variation | | | |
| D37 | Queen's Gambit Declined | Three Knights | Vienna Variation | | |
| D37 | Queen's Gambit Declined | Vienna Variation | Quiet Variation | | |
| D38 | Queen's Gambit Declined | Ragozin Defense | | | |
| D38 | Queen's Gambit Declined | Ragozin Defense | Alekhine Variation | | |
| D38 | Queen's Gambit Declined | Westphalian Variation | | | |
| D39 | Queen's Gambit Declined | Ragozin Defense | Vienna Variation | | |
| D40 | Queen's Gambit Declined | Semi-Tarrasch Defense | | | |
| D40 | Queen's Gambit Declined | Semi-Tarrasch Defense | Levenfish Variation | | |
| D40 | Queen's Gambit Declined | Semi-Tarrasch Defense | Pillsbury Variation | | |
| D40 | Queen's Gambit Declined | Semi-Tarrasch Defense | Symmetrical Variation | | |
| D41 | Queen's Gambit Declined | Semi-Tarrasch Defense | | | |
| D41 | Queen's Gambit Declined | Semi-Tarrasch Defense | Exchange Variation | | |
| D41 | Queen's Gambit Declined | Semi-Tarrasch Defense | Kmoch Variation | | |
| D41 | Queen's Gambit Declined | Semi-Tarrasch Defense | Pillsbury Variation | | |
| D41 | Queen's Gambit Declined | Semi-Tarrasch Defense | San Sebastian Variation | | |
| D42 | Queen's Gambit Declined | Semi-Tarrasch Defense | Main Line | | |
| D43 | Queen's Gambit Declined | Hastings Variation | | | |
| D43 | Semi-Slav Defense | | | | |
| D43 | Semi-Slav Defense | Anti-Moscow Gambit | | | |
| D44 | Semi-Slav Defense Accepted | | | | |
| D44 | Semi-Slav Defense | Botvinnik Variation | | | |
| D44 | Semi-Slav Defense | Botvinnik Variation | | | |
| D44 | Semi-Slav Defense | Botvinnik Variation | Alatortsev System | | |
| D44 | Semi-Slav Defense | Botvinnik Variation | Ekstrom Variation | | |
| D44 | Semi-Slav Defense | Botvinnik Variation | Lilienthal Variation | | |
| D44 | Semi-Slav Defense | Botvinnik Variation | Szabo Variation | | |
| D45 | Semi-Slav Defense | Accelerated Meran Variation | | | |
| D45 | Semi-Slav Defense | Main Line | | | |
| D45 | Semi-Slav Defense | Normal Variation | | | |
| D45 | Semi-Slav Defense | Rubinstein System | | | |
| D45 | Semi-Slav Defense | Stoltz Variation | | | |
| D45 | Semi-Slav Defense | Stoltz Variation | | | |
| D45 | Semi-Slav Defense | Stoltz Variation | | | |
| D45 | Semi-Slav Defense | Stoltz Variation | | | |
| D45 | Semi-Slav Defense | Stoltz Variation | Center Variation | | |
| D45 | Semi-Slav Defense | Stoltz Variation | Center Variation | Mikhalchishin Line | |
| D45 | Semi-Slav Defense | Stoltz Variation | Shabalov Attack | | |
| D45 | Semi-Slav Defense | Stonewall Defense | | | |
| D46 | Semi-Slav Defense | Bogoljubow Variation | | | |
| D46 | Semi-Slav Defense | Chigorin Defense | | | |
| D46 | Semi-Slav Defense | Chigorin Defense | | | |
| D46 | Semi-Slav Defense | Main Line | | | |
| D46 | Semi-Slav Defense | Main Line | | | |
| D46 | Semi-Slav Defense | Romih Variation | | | |
| D47 | Semi-Slav Defense | Meran Variation | | | |
| D47 | Semi-Slav Defense | Meran Variation | Lundin Variation | | |
| D47 | Semi-Slav Defense | Meran Variation | Wade Variation | | |
| D51 | Queen's Gambit Declined | Modern Variation | Knight Defense | | |
| D47 | Semi-Slav Defense | Meran Variation | Wade Variation | Kaidanov Gambit | |
| D47 | Semi-Slav Defense | Meran Variation | Wade Variation | Larsen Variation | |
| D47 | Semi-Slav Defense | Semi-Meran Variation | | | |
| D48 | Semi-Slav Defense | Meran Variation | | | |
| D48 | Semi-Slav Defense | Meran Variation | | | |
| D48 | Semi-Slav Defense | Meran Variation | Old Variation | | |
| D48 | Semi-Slav Defense | Meran Variation | Pirc Variation | | |
| D48 | Semi-Slav Defense | Meran Variation | Reynolds' Variation | | |
| D49 | Semi-Slav Defense | Meran Variation | Blumenfeld Variation | | |
| D49 | Semi-Slav Defense | Meran Variation | Rabinovich Variation | | |
| D49 | Semi-Slav Defense | Meran Variation | Rellstab Attack | | |
| D49 | Semi-Slav Defense | Meran Variation | Sozin Variation | | |
| D49 | Semi-Slav Defense | Meran Variation | Sozin Variation | | |
| D49 | Semi-Slav Defense | Meran Variation | Stahlberg Variation | | |
| D50 | Queen's Gambit Declined | Been-Koomen Variation | | | |
| D50 | Queen's Gambit Declined | Modern Variation | | | |
| D50 | Queen's Gambit Declined | Pseudo-Tarrasch Variation | | | |
| D50 | Queen's Gambit Declined | Pseudo-Tarrasch Variation | Canal Variation | | |
| D50 | Queen's Gambit Declined | Pseudo-Tarrasch Variation | Primitive Pillsbury Variation | | |
| D50 | Queen's Gambit Declined | Semi-Tarrasch Defense | Krause Variation | | |
| D51 | Queen's Gambit Declined | Alekhine Variation | | | |
| D51 | Queen's Gambit Declined | Capablanca Variation | Anti-Cambridge Springs Variation | | |
| D51 | Queen's Gambit Declined | Modern Variation | Knight Defense | | |
| D51 | Queen's Gambit Declined | Modern Variation | Knight Defense | | |
| D51 | Queen's Gambit Declined | Rochlin Variation | | | |
| D52 | Queen's Gambit Declined | | | | |
| D52 | Queen's Gambit Declined | Cambridge Springs Defense | | | |
| D52 | Queen's Gambit Declined | Cambridge Springs Defense | | | |
| D52 | Queen's Gambit Declined | Cambridge Springs Defense | Argentine Variation | | |
| D52 | Queen's Gambit Declined | Cambridge Springs Defense | Bogoljubow Variation | | |
| D52 | Queen's Gambit Declined | Cambridge Springs Defense | Capablanca Variation | | |
| D52 | Queen's Gambit Declined | Cambridge Springs Defense | Rubinstein Variation | | |
| D52 | Queen's Gambit Declined | Cambridge Springs Defense | Yugoslav Variation | | |
| D53 | Queen's Gambit Declined | | | | |
| D53 | Queen's Gambit Declined | Lasker Defense | | | |
| D53 | Queen's Gambit Declined | Modern Variation | Heral Variation | | |
| D54 | Queen's Gambit Declined | Neo-Orthodox Variation | | | |
| D55 | Queen's Gambit Declined | Anti-Tartakower Variation | | | |
| D55 | Queen's Gambit Declined | Anti-Tartakower Variation | Petrosian Variation | | |
| D55 | Queen's Gambit Declined | Modern Variation | Normal Line | | |
| D55 | Queen's Gambit Declined | Neo-Orthodox Variation | | | |
| D55 | Queen's Gambit Declined | Neo-Orthodox Variation | Main Line | | |
| D55 | Queen's Gambit Declined | Pillsbury Attack | | | |
| D56 | Queen's Gambit Declined | Lasker Defense | | | |
| D56 | Queen's Gambit Declined | Lasker Defense | Russian Variation | | |
| D77 | Neo-Grünfeld Defense | Classical Variation | Modern Defense | | |
| D56 | Queen's Gambit Declined | Lasker Defense | Teichmann Variation | | |
| D57 | Queen's Gambit Declined | Lasker Defense | Bernstein Variation | | |
| D57 | Queen's Gambit Declined | Lasker Defense | Bernstein Variation | Mar del Plata Gambit | |
| D57 | Queen's Gambit Declined | Lasker Defense | Main Line | | |
| D58 | Queen's Gambit Declined | Tartakower Defense | | | |
| D58 | Queen's Gambit Declined | Tartakower Defense | Exchange Variation | | |
| D59 | Queen's Gambit Declined | Tartakower Defense | | | |
| D59 | Queen's Gambit Declined | Tartakower Defense | Makogonov Exchange Variation | | |
| D60 | Queen's Gambit Declined | Orthodox Defense | | | |
| D60 | Queen's Gambit Declined | Orthodox Defense | Botvinnik Variation | | |
| D60 | Queen's Gambit Declined | Orthodox Defense | Rauzer Variation | | |
| D61 | Queen's Gambit Declined | Orthodox Defense | Rubinstein Variation | | |
| D62 | Queen's Gambit Declined | Orthodox Defense | Rubinstein Variation | Flohr Line | |
| D63 | Queen's Gambit Declined | Orthodox Defense | Capablanca Variation | | |
| D63 | Queen's Gambit Declined | Orthodox Defense | Henneberger Variation | | |
| D63 | Queen's Gambit Declined | Orthodox Defense | Main Line | | |
| D63 | Queen's Gambit Declined | Orthodox Defense | Main Line | | |
| D63 | Queen's Gambit Declined | Orthodox Defense | Pillsbury Variation | | |
| D63 | Queen's Gambit Declined | Orthodox Defense | Swiss | Carlsbad Variation | |
| D64 | Queen's Gambit Declined | Orthodox Defense | Rubinstein Attack | | |
| D64 | Queen's Gambit Declined | Orthodox Defense | Rubinstein Attack | | |
| D96 | Grünfeld Defense | Russian Variation | | | |
| D64 | Queen's Gambit Declined | Orthodox Defense | Rubinstein Attack | | |
| D64 | Queen's Gambit Declined | Orthodox Defense | Rubinstein Attack | | |
| D65 | Queen's Gambit Declined | Orthodox Defense | Rubinstein Attack | | |
| D66 | Queen's Gambit Declined | Orthodox Defense | Bd3 Line | | |
| D66 | Queen's Gambit Declined | Orthodox Defense | Fianchetto Variation | | |
| D67 | Queen's Gambit Declined | Orthodox Defense | Alekhine Variation | | |
| D67 | Queen's Gambit Declined | Orthodox Defense | Bd3 Line | | |
| D67 | Queen's Gambit Declined | Orthodox Defense | Capablanca System | | |
| D67 | Queen's Gambit Declined | Orthodox Defense | Janowski Variation | | |
| D67 | Queen's Gambit Declined | Orthodox Defense | Main Line | | |
| D68 | Queen's Gambit Declined | Orthodox Defense | Classical Variation | | |
| D68 | Queen's Gambit Declined | Orthodox Defense | Classical Variation | | |
| D68 | Queen's Gambit Declined | Orthodox Defense | Classical Variation | | |
| D69 | Queen's Gambit Declined | Orthodox Defense | Classical Variation | | |
| D70 | Neo-Grünfeld Defense | Goglidze Attack | | | |
| D70 | Neo-Grünfeld Defense | with Nf3 | | | |
| D70 | Neo-Grünfeld Defense | with g3 | | | |
| D71 | Neo-Grünfeld Defense | Exchange Variation | | | |
| D74 | Neo-Grünfeld Defense | Delayed Exchange Variation | | | |
| D75 | Neo-Grünfeld Defense | Delayed Exchange Variation | | | |
| D75 | Neo-Grünfeld Defense | Delayed Exchange Variation | | | |
| D76 | Neo-Grünfeld Defense | Delayed Exchange Variation | | | |
| D77 | Neo-Grünfeld Defense | Classical Variation | | | |
| D77 | Neo-Grünfeld Defense | Classical Variation | Polgar Variation | | |
| D78 | Neo-Grünfeld Defense | Classical Variation | Original Defense | | |
| D79 | Neo-Grünfeld Defense | Ultra-Delayed Exchange Variation | | | |
| D80 | Grünfeld Defense | | | | |
| D80 | Grünfeld Defense | Gibbon Gambit | | | |
| D80 | Grünfeld Defense | Lundin Variation | | | |
| D80 | Grünfeld Defense | Lutikov Variation | | | |
| D80 | Grünfeld Defense | Lutikov Variation | Murrey Attack | | |
| D80 | Grünfeld Defense | Stockholm Variation | | | |
| D80 | Grünfeld Defense | Zaitsev Gambit | | | |
| D81 | Grünfeld Defense | Russian Variation | Accelerated Variation | | |
| D82 | Grünfeld Defense | Brinckmann Attack | | | |
| D83 | Grünfeld Defense | Brinckmann Attack | Grünfeld Gambit | | |
| D83 | Grünfeld Defense | Brinckmann Attack | Grünfeld Gambit | Botvinnik Variation | |
| D83 | Grünfeld Defense | Brinckmann Attack | Grünfeld Gambit | Capablanca Variation | |
| D83 | Grünfeld Defense | Brinckmann Attack | Reshevsky Gambit | | |
| D84 | Grünfeld Defense | Brinckmann Attack | Grünfeld Gambit Accepted | | |
| D85 | Grünfeld Defense | Exchange Variation | | | |
| D85 | Grünfeld Defense | Exchange Variation | Modern Exchange Variation | | |
| D85 | Grünfeld Defense | Exchange Variation | Modern Exchange Variation | | |
| D85 | Grünfeld Defense | Exchange Variation | Modern Exchange Variation | | |
| D85 | Grünfeld Defense | Exchange Variation | Modern Exchange Variation | Kramnik's Line | |
| D85 | Grünfeld Defense | Exchange Variation | Modern Exchange Variation | Pawn Grab Line | |
| D85 | Grünfeld Defense | Exchange Variation | Nadanian Attack | | |
| D86 | Grünfeld Defense | Exchange Variation | Classical Variation | | |
| D86 | Grünfeld Defense | Exchange Variation | Larsen Variation | | |
| D86 | Grünfeld Defense | Exchange Variation | Larsen Variation | | |
| D86 | Grünfeld Defense | Exchange Variation | Simagin's Improved Variation | | |
| D86 | Grünfeld Defense | Exchange Variation | Simagin's Lesser Variation | | |
| D87 | Grünfeld Defense | Exchange Variation | Seville Variation | | |
| D87 | Grünfeld Defense | Exchange Variation | Spassky Variation | | |
| D88 | Grünfeld Defense | Exchange Variation | Spassky Variation | | |
| D89 | Grünfeld Defense | Exchange Variation | Sokolsky Variation | | |
| D89 | Grünfeld Defense | Exchange Variation | Spassky Variation | | |
| D90 | Grünfeld Defense | Flohr Variation | | | |
| D90 | Grünfeld Defense | Three Knights Variation | | | |
| D90 | Grünfeld Defense | Three Knights Variation | | | |
| D91 | Grünfeld Defense | Three Knights Variation | Petrosian System | | |
| D92 | Grünfeld Defense | Three Knights Variation | Hungarian Attack | | |
| D93 | Grünfeld Defense | Three Knights Variation | Hungarian Variation | | |
| D94 | Grünfeld Defense | Flohr Defense | | | |
| D94 | Grünfeld Defense | Makogonov Variation | | | |
| D94 | Grünfeld Defense | Opocensky Variation | | | |
| D94 | Grünfeld Defense | Smyslov Defense | | | |
| D94 | Grünfeld Defense | Three Knights Variation | Burille Variation | | |
| D94 | Grünfeld Defense | Three Knights Variation | Paris Variation | | |
| D95 | Grünfeld Defense | Botvinnik Variation | | | |
| D95 | Grünfeld Defense | Pachman Variation | | | |
| D95 | Grünfeld Defense | Three Knights Variation | Vienna Variation | | |
| D97 | Grünfeld Defense | Russian Variation | Byrne Variation | | |
| D97 | Grünfeld Defense | Russian Variation | Hungarian Variation | | |
| D97 | Grünfeld Defense | Russian Variation | Levenfish Variation | | |
| D97 | Grünfeld Defense | Russian Variation | Prins Variation | | |
| D97 | Grünfeld Defense | Russian Variation | Szabo Variation | | |
| D98 | Grünfeld Defense | Russian Variation | Keres Variation | | |
| D98 | Grünfeld Defense | Russian Variation | Smyslov Variation | | |
| D99 | Grünfeld Defense | Russian Variation | Smyslov Variation | | |
| D99 | Grünfeld Defense | Russian Variation | Yugoslav Variation | | |
| E00 | Catalan Opening | | | | |
| E00 | Catalan Opening | | | | |
| E00 | Catalan Opening | Hungarian Gambit | | | |
| E00 | Indian Defense | | | | |
| E00 | Indian Defense | Devin Gambit | | | |
| E00 | Indian Defense | Seirawan Attack | | | |
| E01 | Catalan Opening | Closed | | | |
| E02 | Catalan Opening | Open Defense | | | |
| E03 | Catalan Opening | Open Defense | | | |
| E03 | Catalan Opening | Open Defense | Alekhine Variation | | |
| E04 | Catalan Opening | Open Defense | | | |
| E04 | Catalan Opening | Open Defense | Modern Sharp Variation | | |
| E05 | Catalan Opening | Open Defense | Classical Line | | |
| E05 | Catalan Opening | Open Defense | Classical Line | | |
| E06 | Catalan Opening | Closed | | | |
| E06 | Catalan Opening | Closed | | | |
| E06 | Catalan Opening | Closed | | | |
| E07 | Catalan Opening | Closed | | | |
| E07 | Catalan Opening | Closed | Botvinnik Variation | | |
| E08 | Catalan Opening | Closed | | | |
| E08 | Catalan Opening | Closed | | | |
| E08 | Catalan Opening | Closed | | | |
| E08 | Catalan Opening | Closed | Spassky Gambit | | |
| E08 | Catalan Opening | Closed | Zagoryansky Variation | | |
| E09 | Catalan Opening | Closed Variation | Rabinovich Variation | | |
| E09 | Catalan Opening | Closed Variation | Traditional Variation | | |
| E09 | Catalan Opening | Closed | Main Line | | |
| E09 | Catalan Opening | Closed | Main Line | | |
| E09 | Catalan Opening | Closed | Main Line | | |
| E09 | Catalan Opening | Closed | Sokolsky Variation | | |
| E10 | Blumenfeld Countergambit | | | | |
| E10 | Blumenfeld Countergambit Accepted | | | | |
| E10 | Blumenfeld Countergambit | Duz-Khotimirsky Variation | | | |
| E10 | Blumenfeld Countergambit | Spielmann Variation | | | |
| E10 | Indian Defense | Anti-Nimzo-Indian | | | |
| E10 | Indian Defense | Dzindzi-Indian Defense | | | |
| E10 | Indian Defense | Döry Indian | | | |
| E11 | Bogo-Indian Defense | | | | |
| E11 | Bogo-Indian Defense | Exchange Variation | | | |
| E11 | Bogo-Indian Defense | Grünfeld Variation | | | |
| E11 | Bogo-Indian Defense | Haiti Variation | | | |
| E11 | Bogo-Indian Defense | Monticelli Trap | | | |
| E11 | Bogo-Indian Defense | New England Variation | | | |
| E11 | Bogo-Indian Defense | Nimzowitsch Variation | | | |
| E11 | Bogo-Indian Defense | Retreat Variation | | | |
| E11 | Bogo-Indian Defense | Retreat Variation | | | |
| E11 | Bogo-Indian Defense | Retreat Variation | | | |
| E11 | Bogo-Indian Defense | Retreat Variation | | | |
| E11 | Bogo-Indian Defense | Retreat Variation | | | |
| E11 | Bogo-Indian Defense | Retreat Variation | | | |
| E11 | Bogo-Indian Defense | Retreat Variation | | | |
| E11 | Bogo-Indian Defense | Retreat Variation | | | |
| E11 | Bogo-Indian Defense | Vitolins Variation | | | |
| E11 | Bogo-Indian Defense | Wade-Smyslov Variation | | | |
| E12 | Nimzo-Indian Defense | Three Knights Variation | Duchamp Variation | | |
| E12 | Nimzo-Indian Defense | Three Knights Variation | Duchamp Variation | Modern Line | |
| E12 | Queen's Indian Defense | | | | |
| E12 | Queen's Indian Defense | Kasparov Variation | | | |
| E12 | Queen's Indian Defense | Kasparov Variation | Botvinnik Attack | | |
| E12 | Queen's Indian Defense | Kasparov-Petrosian Variation | | | |
| E12 | Queen's Indian Defense | Kasparov-Petrosian Variation | Andersson Variation | | |
| E12 | Queen's Indian Defense | Kasparov-Petrosian Variation | Classical Variation | | |
| E12 | Queen's Indian Defense | Kasparov-Petrosian Variation | Hedgehog Variation | | |
| E12 | Queen's Indian Defense | Kasparov-Petrosian Variation | Kasparov Attack | | |
| E12 | Queen's Indian Defense | Kasparov-Petrosian Variation | Main Line | | |
| E12 | Queen's Indian Defense | Kasparov-Petrosian Variation | Marco Defense | | |
| E12 | Queen's Indian Defense | Kasparov-Petrosian Variation | Modern Variation | | |
| E12 | Queen's Indian Defense | Kasparov-Petrosian Variation | Petrosian Attack | | |
| E12 | Queen's Indian Defense | Kasparov-Petrosian Variation | Polovodin Gambit | | |
| E12 | Queen's Indian Defense | Kasparov-Petrosian Variation | Rashkovsky Attack | | |
| E12 | Queen's Indian Defense | Kasparov-Petrosian Variation | Romanishin Attack | | |
| E12 | Queen's Indian Defense | Miles Variation | | | |
| E12 | Queen's Indian Defense | Petrosian Variation | | | |
| E12 | Queen's Indian Defense | Petrosian Variation | Farago Defense | | |
| E13 | Queen's Indian Defense | Kasparov Variation | | | |
| E14 | Queen's Indian Defense | Averbakh Variation | | | |
| E14 | Queen's Indian Defense | Spassky System | | | |
| E15 | Queen's Indian Defense | Buerger Variation | | | |
| E15 | Queen's Indian Defense | Fianchetto Variation | | | |
| E15 | Queen's Indian Defense | Fianchetto Variation | Check Variation | | |
| E15 | Queen's Indian Defense | Fianchetto Variation | Check Variation | Intermezzo Line | |
| E15 | Queen's Indian Defense | Fianchetto Variation | Check Variation | Modern Line | |
| E15 | Queen's Indian Defense | Fianchetto Variation | Nimzowitsch Variation | | |
| E15 | Queen's Indian Defense | Fianchetto Variation | Nimzowitsch Variation | Nimzowitsch Attack | |
| E15 | Queen's Indian Defense | Fianchetto Variation | Nimzowitsch Variation | Quiet Line | |
| E15 | Queen's Indian Defense | Fianchetto Variation | Nimzowitsch Variation | Timman's Line | |
| E15 | Queen's Indian Defense | Fianchetto Variation | Rubinstein Variation | | |
| E15 | Queen's Indian Defense | Fianchetto Variation | Sämisch Variation | | |
| E15 | Queen's Indian Defense | Fianchetto Variation | Traditional Line | | |
| E16 | Queen's Indian Defense | Capablanca Variation | | | |
| E16 | Queen's Indian Defense | Riumin Variation | | | |
| E16 | Queen's Indian Defense | Yates Variation | | | |
| E17 | Queen's Indian Defense | Anti-Queen's Indian System | | | |
| E17 | Queen's Indian Defense | Classical Variation | | | |
| E17 | Queen's Indian Defense | Classical Variation | Polugaevsky Gambit | | |
| E17 | Queen's Indian Defense | Classical Variation | Taimanov Gambit | | |
| E17 | Queen's Indian Defense | Euwe Variation | | | |
| E17 | Queen's Indian Defense | Fianchetto Variation | Kramnik Variation | | |
| E17 | Queen's Indian Defense | Opocensky Variation | | | |
| E17 | Queen's Indian Defense | Traditional Variation | | | |
| E18 | Queen's Indian Defense | Classical Variation | Tiviakov Defense | | |
| E18 | Queen's Indian Defense | Classical Variation | Traditional Variation | | |
| E18 | Queen's Indian Defense | Classical Variation | Traditional Variation | Nimzowitsch Line | |
| E19 | Queen's Indian Defense | Classical Variation | Traditional Variation | Main Line | |
| E20 | Nimzo-Indian Defense | | | | |
| E20 | Nimzo-Indian Defense | Kmoch Variation | | | |
| E20 | Nimzo-Indian Defense | Mikenas Attack | | | |
| E20 | Nimzo-Indian Defense | Romanishin Variation | | | |
| E20 | Nimzo-Indian Defense | Romanishin Variation | | | |
| E20 | Nimzo-Indian Defense | Romanishin Variation | English Hybrid | | |
| E21 | Nimzo-Indian Defense | Three Knights Variation | | | |
| E21 | Nimzo-Indian Defense | Three Knights Variation | Euwe Variation | | |
| E21 | Nimzo-Indian Defense | Three Knights Variation | Korchnoi Variation | | |
| E21 | Nimzo-Indian Defense | Three Knights Variation | Shocron Gambit | | |
| E22 | Nimzo-Indian Defense | Spielmann Variation | | | |
| E23 | Nimzo-Indian Defense | Spielmann Variation | Carlsbad Variation | | |
| E23 | Nimzo-Indian Defense | Spielmann Variation | Romanovsky Gambit | | |
| E23 | Nimzo-Indian Defense | Spielmann Variation | Stahlberg Variation | | |
| E23 | Nimzo-Indian Defense | Spielmann Variation | Stahlberg Variation | | |
| E24 | Nimzo-Indian Defense | Sämisch Variation | Accelerated | | |
| E70 | King's Indian Defense | Accelerated Averbakh Variation | | | |
| E24 | Nimzo-Indian Defense | Sämisch Variation | Botvinnik Variation | | |
| E25 | Nimzo-Indian Defense | Sämisch Variation | | | |
| E25 | Nimzo-Indian Defense | Sämisch Variation | Keres Variation | | |
| E25 | Nimzo-Indian Defense | Sämisch Variation | Romanovsky Variation | | |
| E26 | Nimzo-Indian Defense | Sämisch Variation | | | |
| E26 | Nimzo-Indian Defense | Sämisch Variation | O'Kelly Variation | | |
| E27 | Nimzo-Indian Defense | Sämisch Variation | | | |
| E28 | Nimzo-Indian Defense | Sämisch Variation | | | |
| E29 | Nimzo-Indian Defense | Sämisch Variation | | | |
| E29 | Nimzo-Indian Defense | Sämisch Variation | Capablanca Variation | | |
| E30 | Nimzo-Indian Defense | Leningrad Variation | | | |
| E30 | Nimzo-Indian Defense | Leningrad Variation | Averbakh Gambit | | |
| E31 | Nimzo-Indian Defense | Leningrad Variation | Benoni Defense | | |
| E32 | Nimzo-Indian Defense | Classical Variation | | | |
| E32 | Nimzo-Indian Defense | Classical Variation | Keres Defense | | |
| E32 | Nimzo-Indian Defense | Classical Variation | Vitolins-Adorjan Gambit | | |
| E33 | Nimzo-Indian Defense | Classical Variation | Milner-Barry Variation | | |
| E33 | Nimzo-Indian Defense | Classical Variation | Zurich Variation | | |
| E34 | Nimzo-Indian Defense | Classical Variation | Belyavsky Gambit | | |
| E34 | Nimzo-Indian Defense | Classical Variation | Noa Variation | | |
| E35 | Nimzo-Indian Defense | Classical Variation | Noa Variation | | |
| E36 | Nimzo-Indian Defense | Classical Variation | Noa Variation | | |
| E36 | Nimzo-Indian Defense | Classical Variation | Noa Variation | Botvinnik Variation | |
| E36 | Nimzo-Indian Defense | Classical Variation | Noa Variation | Main Line | |
| E37 | Nimzo-Indian Defense | Classical Variation | Noa Variation | | |
| E37 | Nimzo-Indian Defense | Classical Variation | Noa Variation | San Remo Variation | |
| E38 | Nimzo-Indian Defense | Classical Variation | Berlin Variation | | |
| E38 | Nimzo-Indian Defense | Classical Variation | Berlin Variation | Steiner Variation | |
| E39 | Nimzo-Indian Defense | Classical Variation | Berlin Variation | Macieja System | |
| E39 | Nimzo-Indian Defense | Classical Variation | Berlin Variation | Pirc Variation | |
| E40 | Nimzo-Indian Defense | Normal Line | | | |
| E40 | Nimzo-Indian Defense | Normal Variation | Taimanov Variation | | |
| E41 | Nimzo-Indian Defense | Hübner Variation | | | |
| E41 | Nimzo-Indian Defense | Hübner Variation | Main Line | | |
| E41 | Nimzo-Indian Defense | Normal Variation | Hübner Deferred | | |
| E42 | Nimzo-Indian Defense | Hübner Variation | Rubinstein Variation | | |
| E42 | Nimzo-Indian Defense | Hübner Variation | Rubinstein Variation | Main Line | |
| E42 | Nimzo-Indian Defense | Hübner Variation | Rubinstein Variation | Sherbakov Attack | |
| E43 | Nimzo-Indian Defense | St. Petersburg Variation | | | |
| E43 | Nimzo-Indian Defense | St. Petersburg Variation | | | |
| E43 | Nimzo-Indian Defense | St. Petersburg Variation | | | |
| E43 | Nimzo-Indian Defense | St. Petersburg Variation | | | |
| E43 | Nimzo-Indian Defense | St. Petersburg Variation | | | |
| E43 | Nimzo-Indian Defense | St. Petersburg Variation | | | |
| E43 | Nimzo-Indian Defense | St. Petersburg Variation | | | |
| E43 | Nimzo-Indian Defense | St. Petersburg Variation | | | |
| E43 | Nimzo-Indian Defense | St. Petersburg Variation | | | |
| E43 | Nimzo-Indian Defense | St. Petersburg Variation | | | |
| E43 | Nimzo-Indian Defense | St. Petersburg Variation | | | |
| E43 | Nimzo-Indian Defense | St. Petersburg Variation | with Ne4 | | |
| E44 | Nimzo-Indian Defense | Fischer Variation | | | |
| E45 | Nimzo-Indian Defense | Normal Variation | Bronstein (Byrne) Variation | | |
| E46 | Nimzo-Indian Defense | Normal Variation | | | |
| E46 | Nimzo-Indian Defense | Reshevsky Variation | | | |
| E46 | Nimzo-Indian Defense | Simagin Variation | | | |
| E47 | Nimzo-Indian Defense | Normal Variation | Bishop Attack | | |
| E48 | Nimzo-Indian Defense | Normal Variation | Bishop Attack | Classical Defense | |
| E48 | Nimzo-Indian Defense | Ragozin Defense | | | |
| E49 | Nimzo-Indian Defense | Normal Variation | Botvinnik System | | |
| E50 | Nimzo-Indian Defense | | | | |
| E51 | Nimzo-Indian Defense | Normal Variation | Ragozin Variation | | |
| E51 | Nimzo-Indian Defense | Normal Variation | Sämisch Deferred | | |
| E51 | Nimzo-Indian Defense | Ragozin Variation | | | |
| E52 | Nimzo-Indian Defense | Normal Variation | Schlechter Defense | | |
| E52 | Nimzo-Indian Defense | Normal Variation | Schlechter Defense | | |
| E53 | Nimzo-Indian Defense | Normal Variation | Gligoric System | | |
| E53 | Nimzo-Indian Defense | Normal Variation | Gligoric System | | |
| E53 | Nimzo-Indian Defense | Normal Variation | Gligoric System | Keres Variation | |
| E54 | Nimzo-Indian Defense | Normal Variation | Gligoric System | Exchange Variation | |
| E54 | Nimzo-Indian Defense | Normal Variation | Gligoric System | Smyslov Variation | |
| E55 | Nimzo-Indian Defense | Normal Variation | Gligoric System | Bronstein Variation | |
| E56 | Nimzo-Indian Defense | Normal Variation | Gligoric System | Bernstein Defense | |
| E58 | Nimzo-Indian Defense | Normal Variation | Bernstein Defense | Exchange Line | |
| E59 | Nimzo-Indian Defense | Normal Variation | Bernstein Defense | | |
| E60 | Grünfeld Defense | Counterthrust Variation | | | |
| E60 | Indian Defense | Anti-Grünfeld | Adorjan Gambit | | |
| E60 | Indian Defense | Anti-Grünfeld | Advance Variation | | |
| E60 | Indian Defense | Anti-Grünfeld | Alekhine Variation | | |
| E60 | Indian Defense | Anti-Grünfeld | Alekhine Variation | Leko Gambit | |
| E60 | Indian Defense | Anti-Grünfeld | Basman-Williams Attack | | |
| E60 | Indian Defense | King's Indian Variation | Fianchetto Variation | | |
| E60 | Indian Defense | West Indian Defense | | | |
| E60 | King's Indian Defense | Fianchetto Variation | Immediate Fianchetto | | |
| E60 | King's Indian Defense | Normal Variation | King's Knight Variation | | |
| E60 | King's Indian Defense | Santasiere Variation | | | |
| E60 | King's Indian Defense | Semi-Classical Variation | Benoni Variation | | |
| E60 | King's Indian Defense | Semi-Classical Variation | Hollywood Variation | | |
| E60 | Queen's Pawn, Mengarini Attack | | | | |
| E61 | King's Indian Defense | | | | |
| E61 | King's Indian Defense | Fianchetto Variation | Benjamin Defense | | |
| E61 | King's Indian Defense | Semi-Classical Variation | | | |
| E61 | King's Indian Defense | Semi-Classical Variation | Exchange Variation | | |
| E61 | King's Indian Defense | Semi-Classical Variation | Queenside Storm Line | | |
| E61 | King's Indian Defense | Smyslov Variation | | | |
| E62 | King's Indian Defense | Fianchetto Variation | Carlsbad Variation | | |
| E62 | King's Indian Defense | Fianchetto Variation | Delayed Fianchetto | | |
| E62 | King's Indian Defense | Fianchetto Variation | Kavalek Defense | | |
| E62 | King's Indian Defense | Fianchetto Variation | Larsen Defense | | |
| E62 | King's Indian Defense | Fianchetto Variation | Lesser Simagin (Spassky) | | |
| E62 | King's Indian Defense | Fianchetto Variation | Simagin Variation | | |
| E62 | King's Indian Defense | Fianchetto Variation | Uhlmann-Szabo System | | |
| E63 | King's Indian Defense | Fianchetto Variation | Panno Variation | | |
| E63 | King's Indian Defense | Fianchetto Variation | Panno Variation | Blockade Line | |
| E63 | King's Indian Defense | Fianchetto Variation | Panno Variation | Donner Line | |
| E63 | King's Indian Defense | Fianchetto Variation | Panno Variation | Korchnoi Line | |
| E64 | King's Indian Defense | Fianchetto Variation | Double Fianchetto Attack | | |
| E64 | King's Indian Defense | Fianchetto Variation | Hungarian Variation | | |
| E64 | King's Indian Defense | Fianchetto Variation | Pterodactyl Variation | | |
| E64 | King's Indian Defense | Fianchetto Variation | Yugoslav System | | |
| E64 | King's Indian Defense | Fianchetto Variation | Yugoslav Variation | Rare Line | |
| E65 | King's Indian Defense | Fianchetto Variation | Yugoslav Variation | | |
| E65 | King's Indian Defense | Fianchetto Variation | Yugoslav Variation | Exchange Line | |
| E66 | King's Indian Defense | Fianchetto Variation | Yugoslav Variation | Advance Line | |
| E67 | King's Indian Defense | Fianchetto Variation | Classical Fianchetto | | |
| E67 | King's Indian Defense | Fianchetto Variation | Debrecen Defense | | |
| E68 | King's Indian Defense | Fianchetto Variation | Classical Variation | | |
| E68 | King's Indian Defense | Fianchetto Variation | Long Variation | | |
| E69 | King's Indian Defense | Fianchetto Variation | Classical Main Line | | |
| E70 | King's Indian Defense | Kramer Variation | | | |
| E70 | King's Indian Defense | Normal Variation | | | |
| E70 | King's Indian Defense | Normal Variation | | | |
| E71 | King's Indian Defense | Makogonov Variation | | | |
| E72 | King's Indian Defense | Normal Variation | Deferred Fianchetto | | |
| E72 | King's Indian Defense | Pomar System | | | |
| E73 | King's Indian Defense | Averbakh Variation | | | |
| E73 | King's Indian Defense | Averbakh Variation | Flexible Defense | | |
| E73 | King's Indian Defense | Averbakh Variation | Geller Defense | | |
| E73 | King's Indian Defense | Averbakh Variation | Modern Defense | | |
| E73 | King's Indian Defense | Averbakh Variation | Modern Defense | Burgess Line | |
| E73 | King's Indian Defense | Averbakh Variation | Nc6 Defense | | |
| E73 | King's Indian Defense | Averbakh Variation | Spanish Defense | | |
| E73 | King's Indian Defense | Normal Variation | Standard Development | | |
| E73 | King's Indian Defense | Semi-Averbakh System | | | |
| E74 | King's Indian Defense | Averbakh Variation | Benoni Defense | | |
| E74 | King's Indian Defense | Averbakh Variation | Benoni Defense | Advance Variation | |
| E74 | King's Indian Defense | Averbakh Variation | Benoni Defense | Exchange Variation | |
| E75 | King's Indian Defense | Averbakh Variation | Main Line | | |
| E76 | King's Indian Defense | Four Pawns Attack | | | |
| E76 | King's Indian Defense | Four Pawns Attack | Dynamic Attack | | |
| E76 | King's Indian Defense | Four Pawns Attack | Modern Defense | | |
| E77 | King's Indian Defense | Four Pawns Attack | | | |
| E77 | King's Indian Defense | Four Pawns Attack | Florentine Gambit | | |
| E77 | King's Indian Defense | Four Pawns Attack | Normal Attack | | |
| E77 | King's Indian Defense | Six Pawns Attack | | | |
| E78 | King's Indian Defense | Four Pawns Attack | Fluid Attack | | |
| E79 | King's Indian Defense | Four Pawns Attack | Exchange Variation | | |
| E80 | King's Indian Defense | Sämisch Variation | | | |
| E81 | King's Indian Defense | Steiner Attack | | | |
| E81 | King's Indian Defense | Sämisch Variation | Bobotsov-Korchnoi-Petrosian Variation | | |
| E81 | King's Indian Defense | Sämisch Variation | Byrne Defense | | |
| E81 | King's Indian Defense | Sämisch Variation | Normal Defense | | |
| E81 | King's Indian Defense | Sämisch Variation | Sämisch Gambit | | |
| E82 | King's Indian Defense | Sämisch Variation | Double Fianchetto | | |
| E83 | King's Indian Defense | Sämisch Variation | Panno Formation | | |
| E83 | King's Indian Defense | Sämisch Variation | Ruban Variation | | |
| E83 | King's Indian Defense | Sämisch Variation | Yates Defense | | |
| E84 | King's Indian Defense | Sämisch Variation | Panno Main Line | | |
| E85 | King's Indian Defense | Sämisch Variation | Orthodox Variation | | |
| E86 | King's Indian Defense | Sämisch Variation | | | |
| E87 | King's Indian Defense | Sämisch Variation | Bronstein Defense | | |
| E87 | King's Indian Defense | Sämisch Variation | Closed Variation | | |
| E87 | King's Indian Defense | Sämisch Variation | Orthodox Variation | Bronstein Variation | |
| E89 | King's Indian Defense | Sämisch Variation | Closed Variation | Main Line | |
| E90 | King's Indian Defense | Larsen Variation | | | |
| E90 | King's Indian Defense | Normal Variation | Rare Defenses | | |
| E90 | King's Indian Defense | Zinnowitz Variation | | | |
| E91 | King's Indian Defense | Kazakh Variation | | | |
| E91 | King's Indian Defense | Orthodox Variation | | | |
| E92 | King's Indian Defense | Exchange Variation | | | |
| E92 | King's Indian Defense | Orthodox Variation | | | |
| E92 | King's Indian Defense | Orthodox Variation | Gligoric-Taimanov System | | |
| E92 | King's Indian Defense | Petrosian Variation | | | |
| E92 | King's Indian Defense | Petrosian Variation | Stein Defense | | |
| E93 | King's Indian Defense | Petrosian Variation | Keres Defense | | |
| E93 | King's Indian Defense | Petrosian Variation | Normal Defense | | |
| E94 | King's Indian Defense | Orthodox Variation | | | |
| E94 | King's Indian Defense | Orthodox Variation | Donner Defense | | |
| E94 | King's Indian Defense | Orthodox Variation | Glek Defense | | |
| E94 | King's Indian Defense | Orthodox Variation | Positional Defense | | |
| E94 | King's Indian Defense | Orthodox Variation | Positional Defense | Closed Line | |
| E94 | King's Indian Defense | Orthodox Variation | Ukrainian Defense | | |
| E95 | King's Indian Defense | Orthodox Variation | | | |
| E96 | King's Indian Defense | Orthodox Variation | Positional Defense | Main Line | |
| E97 | King's Indian Defense | Orthodox Variation | Aronin-Taimanov Defense | | |
| E97 | King's Indian Defense | Orthodox Variation | Bayonet Attack | | |
| E97 | King's Indian Defense | Orthodox Variation | Bayonet Attack | Sokolov's Line | |
| E97 | King's Indian Defense | Orthodox Variation | Bayonet Attack | Yepishin's Line | |
| E97 | King's Indian Defense | Orthodox Variation | Korchnoi Attack | | |
| E97 | King's Indian Defense | Orthodox Variation | Modern System | | |
| E98 | King's Indian Defense | Orthodox Variation | Classical System | | |
| E98 | King's Indian Defense | Orthodox Variation | Classical System | Kozul Gambit | |
| E98 | King's Indian Defense | Orthodox Variation | Classical System | Neo-Classical Line | |
| E99 | King's Indian Defense | Orthodox Variation | Classical System | Benko Attack | |
| E99 | King's Indian Defense | Orthodox Variation | Classical System | Traditional Line | |