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Here is the complete list of chess openings sorted by ECO code. ECO codes   (chess openings) A00 Polish (Sokolsky) opening A00 Polish : Tuebingen variation A00 Polish : Outflank variation A00 Benko's Opening A00 Lasker simul special A00 Benko's Opening : reversed Alekhine A00 Grob's attack A00 Grob : Spike attack A00 Grob : Fritz gambit A00 Grob : Romford counter-gambit A00 Clemenz (Mead's, Basman's or de Klerk's) Opening A00 Global Opening A00 Amar (Paris) Opening A00 Amar gambit A00 Dunst (Sleipner, Heinrichsen) Opening A00 Dunst (Sleipner-Heinrichsen) Opening A00 Battambang Opening A00 Novosibirsk Opening A00 Anderssen's Opening A00 Ware (Meadow Hay) Opening A00 Crab Opening A00 Saragossa Opening A00 Mieses Opening A00 Mieses Opening A00 Valencia Opening A00 Venezolana Opening A00 Van't Kruijs Opening A00 Amsterdam attack A00 Gedult's Opening A00 Hammerschlag (Fried fox/Pork chop Opening) A00 Anti-Borg (Desprez) Opening A00 Durkin's attack A01 Nimzovich-Larsen attack A01 Nimzovich-Larsen attack : Modern variation A01 Nimzovich-Larsen attack : Indian variation A01 Nimzovich-Larsen attack : Classical variation A01 Nimzovich-Larsen attack : English variation A01 Nimzovich-Larsen attack : Dutch variation A01 Nimzovich-Larsen attack : Polish variation A01 Nimzovich-Larsen attack : Symmetrical variation A02 Bird's Opening A02 Bird : From gambit A02 Bird : From gambit, Lasker variation A02 Bird : From gambit, Lipke variation A02 Bird's Opening, Swiss gambit A02 Bird : Hobbs gambit A03 Bird's Opening A03 Mujannah Opening A03 Bird's Opening : Williams gambit A03 Bird's Opening : Lasker variation A04 Reti Opening A04 Reti v Dutch A04 Reti : Pirc-Lisitsin gambit A04 Reti : Lisitsin gambit deferred A04 Reti Opening A04 Reti : Wade defense A04 Reti : Herrstroem gambit A05 Reti Opening A05 Reti : King's Indian attack, Spassky's variation A05 Reti : King's Indian attack A05 Reti : King's Indian attack, Reti-Smyslov variation A06 Reti Opening A06 Reti : Old Indian attack A06 Santasiere's folly A06 Tennison (Lemberg, Zukertort) gambit A06 Reti : Nimzovich-Larsen attack A07 Reti : King's Indian attack (Barcza system) A07 Reti : King's Indian attack, Yugoslav variation A07 Reti : King's Indian attack, Keres variation A07 Reti : King's Indian attack A07 Reti : King's Indian attack, Pachman system A07 Reti : King's Indian attack (with ...c5) A08 Reti : King's Indian attack A08 Reti : King's Indian attack, French variation A09 Reti Opening A09 Reti : Advance variation A09 Reti accepted A09 Reti accepted : Keres variation A10 English Opening A10 English Opening A10 English : Adorjan defense A10 English : Jaenisch gambit A10 English : Anglo-Dutch defense A11 English : Caro-Kann defensive system A12 English : Caro-Kann defensive system A12 English : Torre defensive system A12 English : London defensive system A12 English : Caro-Kann defensive system A12 English : Bled variation A12 English : New York (London) defensive system A12 English : Capablanca's variation A12 English : Caro-Kann defensive system, Bogoljubov variation A13 English Opening A13 English : Romanishin gambit A13 English Opening : Agincourt variation A13 English : Wimpey system A13 English Opening : Agincourt variation A13 English : Kurajica defense A13 English : Neo-Catalan A13 English : Neo-Catalan accepted A14 English : Neo-Catalan declined A14 English : Symmetrical, Keres defense A15 English, 1...Nf6 (Anglo-Indian defense) A15 English orang-utan A15 English Opening A16 English Opening A16 English : Anglo-Gruenfeld defense A16 English : Anglo-Gruenfeld, Smyslov defense A16 English : Anglo-Gruenfeld, Czech defense A16 English : Anglo-Gruenfeld defense A16 English : Anglo-Gruenfeld defense, Korchnoi variation A17 English Opening A17 English : Queens Indian formation A17 English : Queens Indian, Romanishin variation A17 Variation Nimzo-English Opening : Nimzo-English Opening A18 English : Mikenas-Carls variation A18 English : Mikenas-Carls, Flohr variation A18 English : Mikenas-Carls, Kevitz variation A19 English : Mikenas-Carls, Sicilian variation A20 English Opening A20 English, Nimzovich variation A20 English, Nimzovich, Flohr variation A21 English Opening A21 English, Troeger defense A21 English, Keres variation A21 English Opening A21 English, Smyslov defense A21 English, Kramnik-Shirov counterattack A22 English Opening A22 English : Bellon gambit A22 English : Carls' Bremen system A22 English : Bremen, reverse Dragon A22 English : Bremen, Smyslov system A23 English : Bremen system, Keres variation A24 English : Bremen system with ...g6 A25 English : Sicilian Reversed A25 English : Closed system A25 English : Closed, Taimanov variation A25 English : Closed, Hort variation A25 English : Closed, 5.Rb1 A25 English : Closed, 5.Rb1 Taimanov variation A25 English : Closed system (without ...d6) A26 English : Closed system A26 English : Botvinnik system A27 English : Three knights system A28 English : Four knights system A28 English : Nenarokov variation A28 English : Bradley Beach variation A28 English : Four knights, Nimzovich variation A28 English : Four knights, Marini variation A28 English : Four knights, Capablanca variation A28 English : Four knights, 4.e3 A28 English : Four knights, Stean variation A28 English : Four knights, Romanishin variation A29 English : Four knights, kingside Fianchetto A30 English : Symmetrical variation A30 English : Symmetrical, hedgehog system A30 English : Symmetrical, hedgehog, flexible formation A31 English : Symmetrical, Benoni formation A32 English : Symmetrical variation A33 English : Symmetrical variation A33 English : Symmetrical, Geller variation A34 English : Symmetrical variation A34 English : Symmetrical, Three knights system A34 English : Symmetrical variation A34 English : Symmetrical, Rubinstein system A35 English : Symmetrical variation A35 English : Symmetrical, Four knights system A36 English : Symmetrical variation A36 English : ultra-Symmetrical variation A36 English : Symmetrical, Botvinnik system Reversed A36 English : Symmetrical, Botvinnik system A37 English : Symmetrical variation A37 English : Symmetrical, Botvinnik system Reversed A38 English : Symmetrical variation A38 English : Symmetrical, Main line with d3 A38 English : Symmetrical, Main line with b3 A39 English : Symmetrical, Main line with d4 A40 Queen's pawn A40 Queen's pawn : Lundin (Kevitz-Mikenas) defense A40 Queen's pawn : Charlick (Englund) gambit A40 Queen's pawn : Englund gambit A40 Queen's pawn : English defense A40 Polish defense A40 Queen's pawn A40 Queen's pawn : Keres defense A40 Queen's pawn : Franco-Indian (Keres) defense A40 Modern defense A40 Beefeater defense A41 Queen's Pawn A41 Old Indian : Tartakower (Wade) variation A41 Old Indian defense A41 Modern defense A41 Robatsch defense : Rossolimo variation A42 Modern defense : Averbakh system A42 Pterodactyl defense A42 Modern defense : Averbakh system, Randspringer variation A42 Modern defense : Averbakh system, Kotov variation A43 Old Benoni defense A43 Old Benoni : Franco-Benoni defense A43 Old Benoni : Mujannah formation A43 Old Benoni defense A43 Woozle defense A43 Old Benoni defense A43 Hawk (Habichd) defense A43 Old Benoni defense A43 Old Benoni : Schmid's system A44 Old Benoni defense A44 Semi-Benoni (`blockade variation') A45 Queen's pawn game A45 Queen's pawn : Bronstein gambit A45 Canard Opening A45 Paleface attack A45 Blackmar-Diemer gambit A45 Gedult attack A45 Trompowsky attack (Ruth, Opovcensky Opening) A46 Queen's pawn game A46 Queen's pawn : Torre attack A46 Queen's pawn : Torre attack, Wagner gambit A46 Queen's pawn : Yusupov-Rubinstein system A46 Doery defense A47 Queen's Indian defense A47 Queen's Indian : Marienbad system A47 Queen's Indian : Marienbad system, Berg variation A48 King's Indian : East Indian defense A48 King's Indian : Torre attack A48 King's Indian : London system A49 King's Indian : Fianchetto without c4 A50 Queen's pawn game A50 Kevitz-Trajkovich defense A50 Queen's Indian Accelerated A51 Budapest defense declined A51 Budapest : Fajarowicz variation A51 Budapest : Fajarowicz, Steiner variation A52 Budapest defense A52 Budapest : Adler variation A52 Budapest : Rubinstein variation A52 Budapest : Alekhine variation A52 Budapest : Alekhine, Abonyi variation A52 Budapest : Alekhine variation, Balogh gambit A53 Old Indian defense A53 Old Indian : Janowski variation A54 Old Indian : Ukrainian variation A54 Old Indian : Dus-Khotimirsky variation A54 Old Indian : Ukrainian variation, 4.Nf3 A55 Old Indian : Main line A56 Benoni defense A56 Benoni defense, Hromodka system A56 Vulture defense A56 Czech Benoni defense A56 Czech Benoni : King's Indian system A57 Benko gambit A57 Benko gambit half accepted A57 Benko gambit : Zaitsev system A57 Benko gambit : Nescafe Frappe attack A58 Benko gambit accepted A58 Benko gambit : Nd2 variation A58 Benko gambit : Fianchetto variation A59 Benko gambit : 7.e4 A59 Benko gambit : Ne2 variation A59 Benko gambit A59 Benko gambit : Main line A60 Benoni defense A61 Benoni defense A61 Benoni : Uhlmann variation A61 Benoni : Nimzovich (knight's tour) variation A61 Benoni : Fianchetto variation A62 Benoni : Fianchetto variation A63 Benoni : Fianchetto, 9...Nbd7 A64 Benoni : Fianchetto, 11...Re8 A65 Benoni : 6.e4 A66 Benoni : pawn storm variation A66 Benoni : Mikenas variation A67 Benoni : Taimanov variation A68 Benoni : Four pawns attack A69 Benoni : Four pawns attack, Main line A70 Benoni : Classical with e4 and Nf3 A70 Benoni : Classical without 9.O-O A71 Benoni : Classical, 8.Bg5 A72 Benoni : Classical without 9.O-O A73 Benoni : Classical, 9.O-O A74 Benoni : Classical, 9...a6, 10.a4 A75 Benoni : Classical with ...a6 and 10...Bg4 A76 Benoni : Classical, 9...Re8 A77 Benoni : Classical, 9...Re8, 10.Nd2 A78 Benoni : Classical with ...Re8 and ...Na6 A79 Benoni : Classical, 11.f3 A80 Dutch A80 Dutch, Spielmann gambit A80 Dutch, Manhattan (Alapin, Ulvestad) variation A80 Dutch, Von Pretzel gambit A80 Dutch, Korchnoi attack A80 Dutch, Krejcik gambit A80 Dutch, 2.Bg5 variation A81 Dutch defense A81 Dutch defense, Blackburne variation A81 Dutch defense A81 Dutch : Leningrad, Basman system A81 Dutch : Leningrad, Karlsbad variation A82 Dutch : Staunton gambit A82 Dutch : Balogh defense A82 Dutch : Staunton gambit A82 Dutch : Staunton gambit, Tartakower variation A83 Dutch : Staunton gambit, Staunton's line A83 Dutch : Staunton gambit, Alekhine variation A83 Dutch : Staunton gambit, Lasker variation A83 Dutch : Staunton gambit, Chigorin variation A83 Dutch : Staunton gambit, Nimzovich variation A84 Dutch defense A84 Dutch defense : Bladel variation A84 Dutch defense A84 Dutch defense, Rubinstein variation A84 Dutch : Staunton gambit deferred A84 Dutch defense A85 Dutch with c4 & Nc3 A86 Dutch with c4 & g3 A86 Dutch : Hort-Antoshin system A86 Dutch : Leningrad variation A87 Dutch : Leningrad, Main variation A88 Dutch : Leningrad, Main variation with c6 A89 Dutch : Leningrad, Main variation with Nc6 A90 Dutch defense A90 Dutch defense : Dutch-Indian (Nimzo-Dutch) variation A90 Dutch-Indian, Alekhine variation A91 Dutch defense A92 Dutch defense A92 Dutch defense, Alekhine variation A92 Dutch : Stonewall variation A92 Dutch : Stonewall with Nc3 A93 Dutch : Stonewall, Botwinnik variation A94 Dutch : Stonewall with Ba3 A95 Dutch : Stonewall with Nc3 A95 Dutch : Stonewall: Chekhover variation A96 Dutch : Classical variation A97 Dutch : Ilyin-Genevsky variation A97 Dutch : Ilyin-Genevsky, Winter variation A98 Dutch : Ilyin-Genevsky variation with Qc2 A99 Dutch : Ilyin-Genevsky variation with b3 B00 King's pawn Opening B00 Hippopotamus defense B00 Corn stalk defense B00 Lemming defense B00 Fred B00 Barnes defense B00 Fried fox defense B00 Carr's defense B00 Reversed Grob (Borg/Basman defense/macho Grob) B00 St. George (Baker) defense B00 Owen defense B00 Guatemala defense B00 KP : Nimzovich defense B00 KP : Nimzovich defense, Wheeler gambit B00 KP : Nimzovich defense B00 KP : Colorado counter B00 KP : Nimzovich defense B00 KP : Nimzovich defense, Marshall gambit B00 KP : Nimzovich defense, Bogolyubov variation B00 KP : Neo-Mongoloid defense B01 Scandinavian (centre counter) defense B01 Scandinavian defense, Lasker variation B01 Scandinavian defense B01 Scandinavian defense, Gruenfeld variation B01 Scandinavian : Anderssen counter-attack B01 Scandinavian : Anderssen counter-attack Orthodox attack B01 Scandinavian : Anderssen counter-attack, Goteborg system B01 Scandinavian : Anderssen counter-attack, Collijn variation B01 Scandinavian, Mieses-Kotrvc gambit B01 Scandinavian : Pytel-Wade variation B01 Scandinavian defense B01 Scandinavian : Icelandic gambit B01 Scandinavian gambit B01 Scandinavian defense B01 Scandinavian : Marshall variation B01 Scandinavian : Kiel variation B01 Scandinavian : Richter variation B02 Alekhine's defense B02 Alekhine's defense : Scandinavian variation B02 Alekhine's defense : Spielmann variation B02 Alekhine's defense : Maroczy variation B02 Alekhine's defense : Krejcik variation B02 Alekhine's defense : Mokele Mbembe (Buecker) variation B02 Alekhine's defense : Brooklyn defense B02 Alekhine's defense B02 Alekhine's defense : Kmoch variation B02 Alekhine's defense : Saemisch attack B02 Alekhine's defense : Welling variation B02 Alekhine's defense B02 Alekhine's defense : Steiner variation B02 Alekhine's defense : Two pawns' (Lasker's) attack B02 Alekhine's defense : Two pawns' attack, Mikenas variation B03 Alekhine's defense B03 Alekhine's defense : O'Sullivan gambit B03 Alekhine's defense B03 Alekhine's defense : Balogh variation B03 Alekhine's defense B03 Alekhine's defense : Exchange variation B03 Alekhine's defense : Exchange, Karpov variation B03 Alekhine's defense : Four pawns attack B03 Alekhine's defense : Four pawns attack, Korchnoi variation B03 Alekhine's defense : Four pawns attack, 6...Nc6 B03 Alekhine's defense : Four pawns attack, Ilyin-Genevsky var. B03 Alekhine's defense : Four pawns attack, 7.Be3 B03 Alekhine's defense : Four pawns attack, Tartakower variation B03 Alekhine's defense : Four pawns attack, Planinc variation B03 Alekhine's defense : Four pawns attack, Fianchetto variation B03 Alekhine's defense : Four pawns attack, Trifunovic variation B04 Alekhine's defense : Modern variation B04 Alekhine's defense : Modern, Larsen variation B04 Alekhine's defense : Modern, Schmid variation B04 Alekhine's defense : Modern, Fianchetto variation B04 Alekhine's defense : Modern, Keres variation B05 Alekhine's defense : Modern variation, 4...Bg4 B05 Alekhine's defense : Modern, Flohr variation B05 Alekhine's defense : Modern, Panov variation B05 Alekhine's defense : Modern, Alekhine variation B05 Alekhine's defense : Modern, Vitolins attack B06 Robatsch (Modern) defense B06 Norwegian defense B06 Robatsch (Modern) defense B06 Robatsch defense : Three pawns attack B06 Robatsch defense B06 Robatsch defense : Gurgenidze variation B06 Robatsch (Modern) defense B06 Robatsch defense : Two knights variation B06 Robatsch defense : Two knights, Suttles variation B06 Robatsch defense : Pseudo-Austrian attack B07 Pirc defense B07 Pirc : Ufimtsev-Pytel variation B07 Pirc defense B07 Pirc : 150 attack B07 Pirc : Sveshnikov system B07 Pirc : Holmov system B07 Pirc : Byrne variation B07 Pirc defense B07 Pirc : Chinese variation B07 Pirc : bayonet (Mariotti) attack B07 Robatsch defense : Geller's system B08 Pirc : Classical (Two knights) system B08 Pirc : Classical (Two knights) system B08 Pirc : Classical, h3 system B08 Pirc : Classical system, 5.Be2 B09 Pirc : Austrian attack B09 Pirc : Austrian attack B09 Pirc : Austrian attack, 6.e5 B09 Pirc : Austrian attack, 6.Be3 B09 Pirc : Austrian attack, 6.Bd3 B09 Pirc : Austrian attack, Dragon formation B09 Pirc : Austrian attack, Ljubojevic variation B10 Caro-Kann defense B10 Caro-Kann : Hillbilly attack B10 Caro-Kann : Anti-Caro-Kann defense B10 Caro-Kann : Anti-anti-Caro-Kann defense B10 Caro-Kann : Closed (Breyer) variation B10 Caro-Kann defense B10 Caro-Kann : GOldman (Spielmann) variation B10 Caro-Kann : Two knights variation B11 Caro-Kann : Two knights, 3...Bg4 B12 Caro-Kann defense B12 de Bruycker defense B12 Caro-Masi defense B12 Caro-Kann defense B12 Caro-Kann : Tartakower (fantasy) variation B12 Caro-Kann : 3.Nd2 B12 Caro-Kann : Edinburgh variation B12 Caro-Kann : Advance variation B12 Caro-Kann : Advance, Short variation B13 Caro-Kann : Exchange variation B13 Caro-Kann : Exchange, Rubinstein variation B13 Caro-Kann : Panov-Botvinnik attack B13 Caro-Kann : Panov-Botvinnik, Gunderam attack B13 Caro-Kann : Panov-Botvinnik attack B13 Caro-Kann : Panov-Botvinnik, Herzog defense B13 Caro-Kann : Panov-Botvinnik, normal variation B13 Caro-Kann : Panov-Botvinnik, Czerniak variation B13 Caro-Kann : Panov-Botvinnik, Reifir (Spielmann) variation B14 Caro-Kann : Panov-Botvinnik attack, 5...e6 B14 Caro-Kann : Panov-Botvinnik attack, 5...g6 B15 Caro-Kann defense B15 Caro-Kann : Gurgenidze counter-attack B15 Caro-Kann : Gurgenidze system B15 Caro-Kann : Rasa-Studier gambit B15 Caro-Kann defense B15 Caro-Kann : Alekhine gambit B15 Caro-Kann : Tartakower (Nimzovich) variation B15 Caro-Kann : Forgacs variation B16 Caro-Kann : Bronstein-Larsen variation B17 Caro-Kann : Steinitz variation B18 Caro-Kann : Classical variation B18 Caro-Kann : Classical, Flohr variation B18 Caro-Kann : Classical, Maroczy attack B18 Caro-Kann : Classical, 6.h4 B19 Caro-Kann : Classical, 7...Nd7 B19 Caro-Kann : Classical, Spassky variation B20 Sicilian defense B20 Sicilian : Gloria variation B20 Sicilian : Steinitz variation B20 Sicilian : wing gambit B20 Sicilian : wing gambit, Santasiere variation B20 Sicilian : wing gambit, Marshall variation B20 Sicilian : wing gambit, Marienbad variation B20 Sicilian : wing gambit, Carlsbad variation B20 Sicilian : Keres variation (2.Ne2) B21 Sicilian : Grand Prix attack B21 Sicilian : Smith-Morra gambit B21 Sicilian : Andreaschek gambit B21 Sicilian : Smith-Morra gambit B21 Sicilian : Smith-Morra gambit, Chicago defense B22 Sicilian : Alapin's variation (2.c3) B22 Sicilian : 2.c3, Heidenfeld variation B23 Sicilian : Closed B23 Sicilian : Closed, Korchnoi variation B23 Sicilian : Closed, 2...Nc6 B23 Sicilian : chameleon variation B23 Sicilian : Grand Prix attack B23 Sicilian : Grand Prix attack, Schofman variation B24 Sicilian : Closed B24 Sicilian : Closed, Smyslov variation B25 Sicilian : Closed B25 Sicilian : Closed, 6.Ne2 e5 (Botvinnik) B25 Sicilian : Closed, 6.f4 B25 Sicilian : Closed, 6.f4 e5 (Botvinnik) B26 Sicilian : Closed, 6.Be3 B27 Sicilian defense B27 Sicilian : Stiletto (Althouse) variation B27 Sicilian : Quinteros variation B27 Sicilian : Katalimov variation B27 Sicilian : Hungarian variation B27 Sicilian : Acton extension B28 Sicilian : O'Kelly variation B29 Sicilian : Nimzovich-Rubinstein variation B29 Sicilian : Nimzovich-Rubinstein; Rubinstein counter-gambit B30 Sicilian defense B30 Sicilian : Nimzovich-Rossolimo attack (without ...d6) B31 Sicilian : Nimzovich-Rossolimo attack (with ...g6, without ...d6) B31 Sicilian : Nimzovich-Rossolimo attack, Gurgenidze variation B32 Sicilian defense B32 Sicilian : Flohr variation B32 Sicilian : Nimzovich variation B32 Sicilian : Labourdonnais-Loewenthal variation B32 Sicilian : Labourdonnais-Loewenthal (Kalashnikov) variation B33 Sicilian defense B33 Sicilian : Pelikan (Lasker/Sveshnikov) variation B33 Sicilian : Pelikan, Bird variation B33 Sicilian : Pelikan, Chelyabinsk variation B33 Sicilian : Sveshnikov variation B34 Sicilian : Accelerated Fianchetto, Exchange variation B34 Sicilian : Accelerated Fianchetto, Modern variation B35 Sicilian : Accelerated Fianchetto, Modern variation with Bc4 B36 Sicilian : Accelerated Fianchetto, Maroczy bind B36 Sicilian : Accelerated Fianchetto, Gurgenidze variation B37 Sicilian : Accelerated Fianchetto, Maroczy bind, 5...Bg7 B37 Sicilian : Accelerated Fianchetto, Simagin variation B38 Sicilian : Accelerated Fianchetto, Maroczy bind, 6.Be3 B39 Sicilian : Accelerated Fianchetto, Breyer variation B40 Sicilian defense B40 Sicilian : Marshall variation B40 Sicilian defense B40 Sicilian : Anderssen variation B40 Sicilian : Pin variation (Sicilian counter-attack) B40 Sicilian : Pin, Jaffe variation B40 Sicilian : Pin, Koch variation B41 Sicilian : Kan variation B41 Sicilian : Kan, Maroczy bind (Reti variation) B41 Sicilian : Kan, Maroczy bind - Bronstein variation B42 Sicilian : Kan, 5.Bd3 B42 Sicilian : Kan, Gipslis variation B42 Sicilian : Kan, Polugaievsky variation B42 Sicilian : Kan, Swiss cheese variation B43 Sicilian : Kan, 5.Nc3 B44 Sicilian defense B44 Sicilian, Szen (`anti-Taimanov') variation B44 Sicilian, Szen, hedgehog variation B44 Sicilian, Szen variation, Dely-Kasparov gambit B45 Sicilian : Taimanov variation B45 Sicilian : Taimanov, American attack B46 Sicilian : Taimanov variation B47 Sicilian : Taimanov (Bastrikov) variation B48 Sicilian : Taimanov variation B49 Sicilian : Taimanov variation B50 Sicilian B50 Sicilian : wing gambit deferred B51 Sicilian : Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack B52 Sicilian : Canal-Sokolsky attack, 3...Bd7 B52 Sicilian : Canal-Sokolsky attack, Bronstein gambit B52 Sicilian : Canal-Sokolsky attack, Sokolsky variation B53 Sicilian, Chekhover variation B53 Sicilian : Chekhover, Zaitsev variation B54 Sicilian B54 Sicilian : Prins (Moscow) variation B55 Sicilian : Prins variation, Venice attack B56 Sicilian B56 Sicilian : Venice attack B56 Sicilian B57 Sicilian : Sozin, not Scheveningen B57 Sicilian : Magnus Smith trap B57 Sicilian : Sozin, Benko variation B58 Sicilian : Classical B58 Sicilian : Boleslavsky variation B58 Sicilian : Boleslavsky, Louma variation B59 Sicilian : Boleslavsky variation, 7.Nb3 B60 Sicilian : Richter-Rauzer B60 Sicilian : Richter-Rauzer, Bondarevsky variation B60 Sicilian : Richter-Rauzer, Larsen variation B61 Sicilian : Richter-Rauzer, Larsen variation, 7.Qd2 B62 Sicilian : Richter-Rauzer, 6...e6 B62 Sicilian : Richter-Rauzer, Podvebrady variation B62 Sicilian : Richter-Rauzer, Margate (Alekhine) variation B62 Sicilian : Richter-Rauzer, Richter attack B62 Sicilian : Richter-Rauzer, Keres variation B63 Sicilian : Richter-Rauzer, Rauzer attack B63 Sicilian : Richter-Rauzer, Rauzer attack, 7...Be7 B64 Sicilian : Richter-Rauzer, Rauzer attack, 7...Be7 defense, 9.f4 B64 Sicilian : Richter-Rauzer, Rauzer attack, Geller variation B65 Sicilian : Richter-Rauzer, Rauzer attack, 7...Be7 defense, 9...Nxd4 B65 Sicilian : Richter-Rauzer, Rauzer attack, 7...Be7 defense, 9...Nxd4 B66 Sicilian : Richter-Rauzer, Rauzer attack, 7...a6 B67 Sicilian : Richter-Rauzer, Rauzer attack, 7...a6 defense, 8...Bd7 B68 Sicilian : Richter-Rauzer, Rauzer attack, 7...a6 defense, 9...Be7 B69 Sicilian : Richter-Rauzer, Rauzer attack, 7...a6 defense, 11.Bxf6 B70 Sicilian : Dragon variation B71 Sicilian : Dragon, Levenfish variation B71 Sicilian : Dragon, Levenfish; Flohr variation B72 Sicilian : Dragon, 6.Be3 B72 Sicilian : Dragon, Classical attack B72 Sicilian : Dragon, Classical, Amsterdam variation B72 Sicilian : Dragon, Classical, Grigoriev variation B72 Sicilian : Dragon, Classical, Nottingham variation B73 Sicilian : Dragon, Classical, 8.O-O B73 Sicilian : Dragon, Classical, Zollner gambit B73 Sicilian : Dragon, Classical, Richter variation B74 Sicilian : Dragon, Classical, 9.Nb3 B74 Sicilian : Dragon, Classical, Stockholm attack B74 Sicilian : Dragon, Classical, Spielmann variation B74 Sicilian : Dragon, Classical, Bernard defense B74 Sicilian : Dragon, Classical, Reti-Tartakower variation B74 Sicilian : Dragon, Classical, Alekhine variation B75 Sicilian : Dragon, Yugoslav attack B76 Sicilian : Dragon, Yugoslav attack, 7...O-O B76 Sicilian : Dragon, Yugoslav attack, Rauser variation B77 Sicilian : Dragon, Yugoslav attack, 9.Bc4 B77 Sicilian : Dragon, Yugoslav attack, Byrne variation B77 Sicilian : Dragon, Yugoslav attack, 9...Bd7 B78 Sicilian : Dragon, Yugoslav attack, 10.O-O-O B79 Sicilian : Dragon, Yugoslav attack, 12.h4 B80 Sicilian : Scheveningen variation B80 Sicilian : Scheveningen, English variation B80 Sicilian : Scheveningen, Vitolins variation B80 Sicilian : Scheveningen, Fianchetto variation B81 Sicilian : Scheveningen, Keres attack B82 Sicilian : Scheveningen, 6.f4 B82 Sicilian : Scheveningen, Tal variation B83 Sicilian : Scheveningen, 6.Be2 B83 Sicilian : Modern Scheveningen B83 Sicilian : Modern Scheveningen, Main line B83 Sicilian : Modern Scheveningen, Main line with Nb3 B84 Sicilian : Scheveningen (Paulsen), Classical variation B84 Sicilian : Scheveningen, Classical, Nd7 system B84 Sicilian : Scheveningen (Paulsen), Classical variation B85 Sicilian : Scheveningen, Classical variation with ...Qc7 and ...Nc6 B85 Sicilian : Scheveningen, Classical, Maroczy system B85 Sicilian : Scheveningen, Classical B85 Sicilian : Scheveningen, Classical Main line B86 Sicilian : Sozin attack B87 Sicilian : Sozin with ...a6 and ...b5 B88 Sicilian : Sozin, Leonhardt variation B88 Sicilian : Sozin, Fischer variation B89 Sicilian : Sozin, 7.Be3 B89 Sicilian : Velimirovic attack B90 Sicilian : Najdorf B90 Sicilian : Najdorf, Adams attack B90 Sicilian : Najdorf, Lipnitzky attack B90 Sicilian : Najdorf, Byrne (English) attack B91 Sicilian : Najdorf, Zagreb (Fianchetto) variation B92 Sicilian : Najdorf, Opovcensky variation B93 Sicilian : Najdorf, 6.f4 B94 Sicilian : Najdorf, 6.Bg5 B94 Sicilian : Najdorf, Ivkov variation B95 Sicilian : Najdorf, 6...e6 B96 Sicilian : Najdorf, 7.f4 B96 Sicilian : Najdorf, Polugayevsky variation B96 Sicilian : Najdorf, Polugayevsky, Simagin variation B97 Sicilian : Najdorf, 7...Qb6 B97 Sicilian : Najdorf, Poisoned pawn variation B98 Sicilian : Najdorf, 7...Be7 B98 Sicilian : Najdorf, Browne variation B98 Sicilian : Najdorf, Goteborg (Argentine) variation B98 Sicilian : Najdorf variation B99 Sicilian : Najdorf, 7...Be7 Main line C00 French defense C00 French defense, Steiner variation C00 French : Reti (Spielmann) variation C00 French : Steinitz attack C00 French : Labourdonnais variation C00 French defense C00 French : Wing gambit C00 French defense C00 French : Pelikan variation C00 French : Two knights variation C00 French : Chigorin variation C00 French : King's Indian attack C00 French : Reversed Philidor formation C00 French defense C00 Lengfellner system C00 St. George defense C00 French defense C00 French : Schlechter variation C00 French : Alapin variation C01 French : Exchange variation C01 French : Exchange, Svenonius variation C01 French : Exchange, Bogolyubov variation C02 French : Advance variation C02 French : Advance, Steinitz variation C02 French : Advance, Nimzovich variation C02 French : Advance, Nimzovich system C02 French : Advance variation C02 French : Advance, Wade variation C02 French : Advance variation C02 French : Advance, Paulsen attack C02 French : Advance, Milner-Barry gambit C02 French : Advance, Euwe variation C03 French : Tarrasch C03 French : Tarrasch, Haberditz variation C03 French : Tarrasch, Guimard variation C04 French : Tarrasch, Guimard Main line C05 French : Tarrasch, Closed variation C05 French : Tarrasch, Botvinnik variation C05 French : Tarrasch, Closed variation C06 French : Tarrasch, Closed variation, Main line C06 French : Tarrasch, Leningrad variation C07 French : Tarrasch, Open variation C07 French : Tarrasch, Eliskases variation C08 French : Tarrasch, Open, 4.ed ed C09 French : Tarrasch, Open variation, Main line C10 French : Paulsen variation C10 French : Marshall variation C10 French : Rubinstein variation C10 French : Fort Knox variation C10 French : Rubinstein variation C10 French : Rubinstein, Capablanca line C10 French : Frere (Becker) variation C11 French defense C11 French : Swiss variation C11 French : Henneberger variation C11 French : Steinitz variation C11 French : Steinitz, Bradford attack C11 French : Steinitz variation C11 French : Steinitz, Brodsky-Jones variation C11 French : Steinitz variation C11 French : Steinitz, Boleslavsky variation C11 French : Steinitz, Gledhill attack C11 French : Burn variation C12 French : MacCutcheon variation C12 French : MacCutcheon, Bogolyubov variation C12 French : MacCutcheon, Advance variation C12 French : MacCutcheon, Chigorin variation C12 French : MacCutcheon, Grigoriev variation C12 French : MacCutcheon, Bernstein variation C12 French : MacCutcheon, Janowski variation C12 French : MacCutcheon, Dr. Olland (Dutch) variation C12 French : MacCutcheon, Tartakower variation C12 French : MacCutcheon, Lasker variation C12 French : MacCutcheon, Duras variation C12 French : MacCutcheon, Lasker variation, 8...g6 C13 French : Classical C13 French : Classical, Anderssen variation C13 French : Classical, Anderssen-Richter variation C13 French : Classical, Vistaneckis (Nimzovich) variation C13 French : Classical, Frankfurt variation C13 French : Classical, Tartakower variation C13 French : Albin-Alekhine-Chatard attack C13 French : Albin-Alekhine-Chatard attack, Maroczy variation C13 French : Albin-Alekhine-Chatard attack, Breyer variation C13 French : Albin-Alekhine-Chatard attack, Teichmann variation C13 French : Albin-Alekhine-Chatard attack, Spielmann variation C14 French : Classical variation C14 French : Classical, Tarrasch variation C14 French : Classical, Rubinstein variation C14 French : Classical, Alapin variation C14 French : Classical, Pollock variation C14 French : Classical, Steinitz variation C14 French : Classical, Stahlberg variation C15 French : Winawer (Nimzovich) variation C15 French : Winawer, Kondratiyev variation C15 French : Winawer, fingerslip variation C15 French : Winawer, Alekhine (Maroczy) gambit C15 French : Winawer, Alekhine gambit, Alatortsev variation C15 French : Winawer, Alekhine gambit C15 French : Winawer, Alekhine gambit, Kan variation C16 French : Winawer, Advance variation C16 French : Winawer, Petrosian variation C17 French : Winawer, Advance variation C17 French : Winawer, Advance, Bogolyubov variation C17 French : Winawer, Advance, Russian variation C17 French : Winawer, Advance, 5.a3 C17 French : Winawer, Advance, Rauzer variation C18 French : Winawer, Advance variation C18 French : Winawer, Classical variation C19 French : Winawer, Advance, 6...Ne7 C19 French : Winawer, Advance, Smyslov variation C19 French : Winawer, Advance, positional Main line C19 French : Winawer, Advance, poisoned pawn variation C19 French : Winawer, Advance, poisoned pawn, Euwe-Gligoric variation C19 French : Winawer, Advance, poisoned pawn, Konstantinopolsky variation C20 King's pawn game C20 Variation Indian Opening : Indian Opening C20 Variation Mengarini's Opening : Mengarini's Opening C20 Variation King's head Opening : King's head Opening C20 Variation Patzer Opening : Patzer Opening C20 Variation Napoleon's Opening : Napoleon's Opening C20 Variation Lopez Opening : Lopez Opening C20 Alapin's Opening C21 Centre game C21 Centre game, Kieseritsky variation C21 Halasz gambit C21 Danish gambit C21 Danish gambit : Collijn defense C21 Danish gambit : Schlechter defense C21 Danish gambit : Soerensen defense C21 Centre game C22 Centre game C22 Centre game : Paulsen attack C22 Centre game : Charousek variation C22 Centre game : l'Hermet variation C22 Centre game : Berger variation C22 Centre game : Kupreichik variation C22 Centre game : Hall variation C23 Bishop's Opening C23 Bishop's Opening : Philidor counter-attack C23 Bishop's Opening : Lisitsyn variation C23 Bishop's Opening : Calabrese counter-gambit C23 Bishop's Opening : Calabrese counter-gambit, Jaenisch variation C23 Bishop's Opening : Classical variation C23 Bishop's Opening : Lopez gambit C23 Bishop's Opening : Philidor variation C23 Bishop's Opening : Pratt variation C23 Bishop's Opening : Lewis counter-gambit C23 Bishop's Opening : del Rio variation C23 Bishop's Opening : Lewis gambit C23 Bishop's Opening : Wing gambit C23 Bishop's Opening : MacDonnell double gambit C23 Bishop's Opening : Four pawns' gambit C24 Bishop's Opening : Berlin defense C24 Bishop's Opening : Greco gambit C24 Bishop's Opening : Ponziani gambit C24 Bishop's Opening : Urusov gambit C24 Bishop's Opening : Urusov gambit, Panov variation C25 Vienna game C25 Vienna : Zhuravlev countergambit C25 Vienna game, Max Lange defense C25 Vienna : Paulsen variation C25 Vienna : Fyfe gambit C25 Vienna gambit C25 Vienna : Steinitz gambit C25 Vienna : Steinitz gambit, Zukertort defense C25 Vienna : Steinitz gambit, Fraser-Minckwitz variation C25 Vienna gambit C25 Vienna : Hamppe-Allgaier gambit C25 Vienna : Hamppe-Allgaier gambit, Alapin variation C25 Vienna : Hamppe-Muzio gambit C25 Vienna : Hamppe-Muzio, Dubois variation C25 Vienna : Pierce gambit C25 Vienna : Pierce gambit, Rushmere attack C26 Vienna : Falkbeer variation C26 Vienna : Mengarini variation C26 Vienna : Paulsen-Mieses variation C26 Vienna game C27 Vienna game C27 Vienna : `Frankenstein-Dracula' variation C27 Vienna : Adams' gambit C27 Vienna game C27 Vienna : Alekhine variation C27 Boden-Kieseritsky gambit C27 Boden-Kieseritsky gambit : Lichtenhein defense C28 Vienna game C29 Vienna gambit C29 Vienna gambit : Kaufmann variation C29 Vienna gambit : Breyer variation C29 Vienna gambit : Paulsen attack C29 Vienna gambit : Bardeleben variation C29 Vienna gambit : Heyde variation C29 Vienna gambit C29 Vienna gambit, Wurzburger trap C29 Vienna gambit, Steinitz variation C30 King's gambit C30 KGD : Keene's defense C30 KGD : Mafia defense C30 KGD : Norwalde variation C30 KGD : Norwalde variation, Buecker gambit C30 KGD : Classical variation C30 KGD : Classical, Svenonius variation C30 KGD : Classical, Hanham variation C30 KGD : Classical, 4.c3 C30 KGD : Classical, Marshall attack C30 KGD : Classical counter-gambit C30 KGD : Classical, Reti variation C30 KGD : Classical, SOldatenkov variation C30 KGD : Classical, Heath variation C30 KGD : 2...Nf6 C31 KGD : Falkbeer counter-gambit C31 KGD : Falkbeer, Tartakower variation C31 KGD : Falkbeer, Milner-Barry variation C31 KGD : Falkbeer counter-gambit C31 KGD : Nimzovich counter-gambit C31 KGD : Falkbeer, 3...e4 C31 KGD : Falkbeer, Rubinstein variation C31 KGD : Falkbeer, Nimzovich variation C31 KGD : Falkbeer, 4.d3 C31 KGD : Falkbeer, Morphy gambit C32 KGD : Falkbeer, 5.de C32 KGD : Falkbeer, Alapin variation C32 KGD : Falkbeer, Main line, 7...Bf5 C32 KGD : Falkbeer, Tarrasch variation C32 KGD : Falkbeer, Charousek gambit C32 KGD : Falkbeer, Charousek variation C32 KGD : Falkbeer, Keres variation C32 KGD : Falkbeer, Reti variation C33 King's gambit accepted C33 KGA : Tumbleweed gambit C33 KGA : Orsini gambit C33 KGA : Pawn's gambit (Stamma gambit) C33 KGA : Schurig gambit C33 KGA : Carrera (Basman) gambit C33 KGA : Villemson (Steinitz) gambit C33 KGA : Keres (Mason-Steinitz) gambit C33 KGA : Breyer gambit C33 KGA : Lesser Bishop's (Petroff-Jaenisch-Tartakower) gambit C33 KGA : Bishop's gambit C33 KGA : Bishop's gambit, Chigorin's attack C33 KGA : Bishop's gambit, Greco variation C33 KGA : Bishop's gambit, Classical defense C33 KGA : Bishop's gambit, Grimm attack C33 KGA : Bishop's gambit, Classical defense C33 KGA : Bishop's gambit, McDonnell attack C33 KGA : Bishop's gambit, McDonnell attack C33 KGA : Bishop's gambit, Fraser variation C33 KGA : Bishop's gambit, Classical defense, Cozio attack C33 KGA : Bishop's gambit, Boden defense C33 KGA : Bishop's gambit, Bryan counter-gambit C33 KGA : Bishop's gambit, Bryan counter-gambit C33 KGA : Bishop's gambit, Steinitz defense C33 KGA : Bishop's gambit, Maurian defense C33 KGA : Bishop's gambit, Ruy Lopez defense C33 KGA : Bishop's gambit, Lopez-Gianutio counter-gambit C33 KGA : Lopez-Gianutio counter-gambit, Hein variation C33 KGA : Bishop's gambit, Bledow variation C33 KGA : Bishop's gambit, Gifford variation C33 KGA : Bishop's gambit, Boren-Svenonius variation C33 KGA : Bishop's gambit, Anderssen variation C33 KGA : Bishop's gambit, Morphy variation C33 KGA : Bishop's gambit, Cozio (Morphy) defense C33 KGA : Bishop's gambit, Bogolyubov variation C33 KGA : Bishop's gambit, Paulsen attack C33 KGA : Bishop's gambit, Jaenisch variation C34 King's knight's gambit C34 KGA : Bonsch-Osmolovsky variation C34 KGA : Gianutio counter-gambit C34 KGA : Fischer defense C34 KGA : Becker defense C34 KGA : Schallop defense C35 KGA : Cunningham defense C35 KGA : Cunningham, Bertin gambit C35 KGA : Cunningham, Three pawns gambit C35 KGA : Cunningham, Euwe defense C36 KGA : Abbazia defense (Classical defense, Modern defense!) C36 KGA : Abbazia defense, Modern variation C36 KGA : Abbazia defense, Botvinnik variation C37 KGA : Quaade gambit C37 KGA : Rosentreter gambit C37 KGA : Soerensen gambit C37 KGA : King's knight's gambit C37 KGA : Blachly gambit C37 KGA : Lolli gambit (wild Muzio gambit) C37 KGA : Lolli gambit, Young variation C37 KGA : Ghulam Kassim gambit C37 KGA : MacDonnell gambit C37 KGA : Salvio gambit C37 KGA : Silberschmidt gambit C37 KGA : Salvio gambit, Anderssen counter-attack C37 KGA : Cochrane gambit C37 KGA : Herzfeld gambit C37 KGA : Muzio gambit C37 KGA : Muzio gambit, Paulsen variation C37 KGA : double Muzio gambit C37 KGA : Muzio gambit, From defense C37 KGA : Muzio gambit, Holloway defense C37 KGA : Muzio gambit, Kling and Horwitz counter-attack C37 KGA : Muzio gambit, Brentano defense C38 King's knight's gambit C38 KGA : Hanstein gambit C38 KGA : Philidor gambit C38 KGA : Greco gambit C38 KGA : Philidor gambit, Schultz variation C39 King's knight's gambit C39 KGA : Allgaier gambit C39 KGA : Allgaier, Horny defense C39 KGA : Allgaier, ThorOld variation C39 KGA : Allgaier, Cook variation C39 KGA : Allgaier, Blackburne gambit C39 KGA : Allgaier, Walker attack C39 KGA : Allgaier, Urusov attack C39 KGA : Allgaier, Schlechter defense C39 KGA : Kieseritsky, Paulsen defense C39 KGA : Kieseritsky, long whip (Stockwhip, Classical) defense C39 KGA : Kieseritsky, long whip defense, Jaenisch variation C39 KGA : Kieseritsky, Brentano (Campbell) defense C39 KGA : Kieseritsky, Brentano defense, Kaplanek variation C39 KGA : Kieseritsky, Brentano defense C39 KGA : Kieseritsky, Brentano defense, Caro variation C39 KGA : Kieseritsky, Salvio (Rosenthal) defense C39 KGA : Kieseritsky, Salvio defense, Cozio variation C39 KGA : Kieseritsky, Polerio defense C39 KGA : Kieseritsky, Neumann defense C39 KGA : Kieseritsky, Kolisch defense C39 KGA : Kieseritsky, Berlin defense C39 KGA : Kieseritsky, Berlin defense, Riviere variation C39 KGA : Kieseritsky, Berlin defense, 6.Bc4 C39 KGA : Kieseritsky, Rice gambit C40 King's knight Opening C40 Gunderam defense C40 Greco defense C40 Damiano's defense C40 QP counter-gambit (elephant gambit) C40 QP counter-gambit : Maroczy gambit C40 Latvian counter-gambit C40 Latvian : Nimzovich variation C40 Latvian : Fraser defense C40 Latvian gambit, 3.Bc4 C40 Latvian : Behting variation C40 Latvian : Polerio variation C40 Latvian : corkscrew counter-gambit C41 Philidor's defense C41 Philidor : Steinitz variation C41 Philidor : Lopez counter-gambit C41 Philidor : Lopez counter-gambit, Jaenisch variation C41 Philidor's defense C41 Philidor : Philidor counter-gambit C41 Philidor : Philidor counter-gambit, del Rio attack C41 Philidor : Philidor counter-gambit, Berger variation C41 Philidor : Philidor counter-gambit, Zukertort variation C41 Philidor : Exchange variation C41 Philidor : Boden variation C41 Philidor : Exchange variation C41 Philidor : Paulsen attack C41 Philidor : Exchange variation C41 Philidor : Berger variation C41 Philidor : Larsen variation C41 Philidor : Nimzovich (Jaenisch) variation C41 Philidor : Improved Hanham variation C41 Philidor : Nimzovich, Sozin variation C41 Philidor : Nimzovich, Larobok variation C41 Philidor : Nimzovich variation C41 Philidor : Nimzovich, Sokolsky variation C41 Philidor : Nimzovich, Rellstab variation C41 Philidor : Nimzovich, Locock variation C41 Philidor : Nimzovich, Klein variation C41 Philidor : Hanham variation C41 Philidor : Hanham, Krause variation C41 Philidor : Hanham, Steiner variation C41 Philidor : Hanham, Kmoch variation C41 Philidor : Hanham, Berger variation C41 Philidor : Hanham, Schlechter variation C41 Philidor : Hanham, Delmar variation C42 Petrov's defense C42 Petrov : French attack C42 Petrov : Kaufmann attack C42 Petrov : Nimzovich attack C42 Petrov : Cozio (Lasker) attack C42 Petrov : Classical attack C42 Petrov : Classical attack, Chigorin variation C42 Petrov : Classical attack, Berger variation C42 Petrov : Classical attack, Krause variation C42 Petrov : Classical attack, Maroczy variation C42 Petrov : Classical attack, Jaenisch variation C42 Petrov : Classical attack, Mason variation C42 Petrov : Classical attack, Marshall variation C42 Petrov : Classical attack, Tarrasch variation C42 Petrov : Classical attack, Marshall trap C42 Petrov : Classical attack, close variation C42 Petrov : Cochrane gambit C42 Petrov : Paulsen attack C42 Petrov : Damiano variation C42 Petrov Three knights game C42 Petrov : Italian variation C43 Petrov : Modern (Steinitz) attack C43 Petrov : Modern attack, Main line C43 Petrov : Modern attack, Steinitz variation C43 Petrov : Modern attack, Bardeleben variation C43 Petrov : Urusov gambit C43 Petrov : Modern attack, Symmetrical variation C43 Petrov : Modern attack, Trifunovic variation C44 King's pawn game C44 Irish (Chicago) gambit C44 Konstantinopolsky Opening C44 Dresden Opening C44 Inverted Hungarian C44 Inverted Hanham C44 Tayler Opening C44 Ponziani Opening C44 Ponziani : Caro variation C44 Ponziani : Leonhardt variation C44 Ponziani : Steinitz variation C44 Ponziani : Jaenisch counter-attack C44 Ponziani : Fraser defense C44 Ponziani : Reti variation C44 Ponziani : Romanishin variation C44 Ponziani counter-gambit C44 Ponziani counter-gambit, Schmidt attack C44 Ponziani counter-gambit, Cordel variation C44 Scotch Opening C44 Scotch : Lolli variation C44 Scotch : Cochrane variation C44 Scotch : Relfsson gambit ('MacLopez') C44 Scotch : Goering gambit C44 Scotch : Sea-cadet mate C44 Scotch : Goering gambit C44 Scotch : Goering gambit, Bardeleben variation C44 Scotch gambit C44 Scotch gambit : Anderssen (Paulsen, Suhle) counter-attack C44 Scotch gambit C44 Scotch gambit : Cochrane-Shumov defense C44 Scotch gambit : Vitzhum attack C44 Scotch gambit C44 Scotch gambit : Hanneken variation C44 Scotch gambit C44 Scotch gambit : Cochrane variation C44 Scotch gambit : Benima defense C44 Scotch gambit : Dubois-Reti defense C45 Scotch game C45 Scotch : Ghulam Kassim variation C45 Scotch : Pulling counter-attack C45 Scotch : Horwitz attack C45 Scotch : Berger variation C45 Scotch game C45 Scotch : Rosenthal variation C45 Scotch : Fraser attack C45 Scotch : Steinitz variation C45 Scotch : Schmidt variation C45 Scotch : Mieses variation C45 Scotch : Tartakower variation C45 Scotch game C45 Scotch : Blackburne attack C45 Scotch : Gottschall variation C45 Scotch : Paulsen attack C45 Scotch : Paulsen, Gunsberg defense C45 Scotch : Meitner variation C45 Scotch : Blumenfeld attack C45 Scotch : Potter variation C45 Scotch : Romanishin variation C46 Three knights game C46 Three knights : Schlechter variation C46 Three knights : Winawer defense (Gothic defense) C46 Three knights : Steinitz variation C46 Three knights : Steinitz, Rosenthal variation C46 Four knights game C46 Four knights : Schultze-Mueller gambit C46 Four knights : Italian variation C46 Four knights : Gunsberg variation C47 Four knights : Scotch variation C47 Four knights : Scotch, Krause variation C47 Four knights : Scotch, 4...exd4 C47 Four knights : Belgrade gambit C48 Four knights : Spanish variation C48 Four knights : Ranken variation C48 Four knights : Spielmann variation C48 Four knights : Spanish, Classical defense C48 Four knights : Bardeleben variation C48 Four knights : Marshall variation C48 Four knights : Rubinstein counter-gambit C48 Four knights : Rubinstein counter-gambit, Bogolyubov variation C48 Four knights : Rubinstein counter-gambit, 5.Be2 C48 Four knights : Rubinstein counter-gambit Maroczy variation C48 Four knights : Rubinstein counter-gambit, Exchange variation C48 Four knights : Rubinstein counter-gambit, Henneberger variation C49 Four knights : double Ruy Lopez C49 Four knights : Gunsberg counter-attack C49 Four knights : double Ruy Lopez C49 Four knights : Alatortsev variation C49 Four knights C49 Four knights : Janowski variation C49 Four knights : Svenonius variation C49 Four knights : Symmetrical variation C49 Four knights : Symmetrical, Metger unpin C49 Four knights : Symmetrical, Capablanca variation C49 Four knights : Symmetrical, Pillsbury variation C49 Four knights : Symmetrical, Blake variation C49 Four knights : Symmetrical, Tarrasch variation C49 Four knights : Symmetrical, Maroczy system C49 Four knights : Nimzovich (Paulsen) variation C50 King's pawn game C50 Blackburne shilling gambit C50 Rousseau gambit C50 Hungarian defense C50 Hungarian defense : Tartakower variation C50 Giuoco Piano C50 Giuoco Piano : Four knights variation C50 Giuoco Piano : Jerome gambit C50 Giuoco Pianissimo C50 Giuoco Pianissimo : Dubois variation C50 Giuoco Pianissimo C50 Giuoco Pianissimo : Italian Four knights variation C50 Giuoco Pianissimo : Canal variation C51 Evans gambit declined C51 Evans gambit declined, Lange variation C51 Evans gambit declined, Pavlov variation C51 Evans gambit declined, Hirschbach variation C51 Evans gambit declined, Vasquez variation C51 Evans gambit declined, Hicken variation C51 Evans gambit declined, 5.a4 C51 Evans gambit declined, Showalter variation C51 Evans gambit declined, Cordel variation C51 Evans counter-gambit C51 Evans gambit C51 Evans gambit : normal variation C51 Evans gambit : Ulvestad variation C51 Evans gambit : Paulsen variation C51 Evans gambit : Morphy attack C51 Evans gambit : Goering attack C51 Evans gambit : Steinitz variation C51 Evans gambit C51 Evans gambit : Fraser attack C51 Evans gambit : Fraser-Mortimer attack C51 Evans gambit : Stone-Ware variation C51 Evans gambit : Mayet defense C51 Evans gambit : 5...Be7 C51 Evans gambit : Cordel variation C52 Evans gambit C52 Evans gambit : compromised defense C52 Evans gambit : compromised defense, Paulsen variation C52 Evans gambit : compromised defense, Potter variation C52 Evans gambit : Leonhardt variation C52 Evans gambit C52 Evans gambit : Tartakower attack C52 Evans gambit : Levenfish variation C52 Evans gambit : Sokolsky variation C52 Evans gambit C52 Evans gambit : Richardson attack C52 Evans gambit C52 Evans gambit : Waller attack C52 Evans gambit : Lasker defense C52 Evans gambit : Sanders-Alapin variation C52 Evans gambit : Alapin-Steinitz variation C53 Giuoco Piano C53 Giuoco Piano : LaBourdonnais variation C53 Giuoco Piano : close variation C53 Giuoco Piano : centre-hOlding variation C53 Giuoco Piano : Tarrasch variation C53 Giuoco Piano : Mestel variation C53 Giuoco Piano : Eisinger variation C53 Giuoco Piano C53 Giuoco Piano : Bird's attack C53 Giuoco Piano C53 Giuoco Piano : Ghulam Kassim variation C53 Giuoco Piano C53 Giuoco Piano : Anderssen variation C54 Giuoco Piano C54 Giuoco Piano : Krause variation C54 Giuoco Piano : Cracow variation C54 Giuoco Piano : Greco's attack C54 Giuoco Piano : Greco variation C54 Giuoco Piano : Bernstein variation C54 Giuoco Piano : Aitken variation C54 Giuoco Piano C54 Giuoco Piano : Steinitz variation C54 Giuoco Piano : Moeller (Therkatz) attack C54 Giuoco Piano : Therkatz-Herzog variation C54 Giuoco Piano : Moeller, bayonet attack C55 Two knights defense C55 Giuoco piano : Rosentreter variation C55 Giuoco piano C55 Giuoco piano : Holzhausen attack C55 Two knights defense (Modern Bishop's Opening) C55 Two knights defense C55 Two knights defense, Keidanz variation C55 Two knights defense, Perreux variation C55 Two knights defense C55 Two knights : Max Lange attack C55 Two knights : Max Lange attack, Berger variation C55 Two knights : Max Lange attack, Marshall variation C55 Two knights : Max Lange attack, Rubinstein variation C55 Two knights : Max Lange attack, Loman defense C55 Two knights : Max Lange attack, Schlechter variation C55 Two knights : Max Lange attack, Steinitz variation C55 Two knights : Max Lange attack, Krause variation C56 Two knights defense C56 Two knights defense : Yurdansky attack C56 Two knights defense : Canal variation C57 Two knights defense C57 Two knights defense : Wilkes Barre (Traxler) variation C57 Two knights defense : Ulvestad variation C57 Two knights defense : Fritz variation C57 Two knights defense : Fritz, Gruber variation C57 Two knights defense : Lolli attack C57 Two knights defense : Pincus variation C57 Two knights defense : Fegatello attack C57 Two knights defense : Fegatello attack, Leonhardt variation C57 Two knights defense : Fegatello attack, Polerio defense C58 Two knights defense C58 Two knights defense : Kieseritsky variation C58 Two knights defense : Yankovich variation C58 Two knights defense : Maroczy variation C58 Two knights defense C58 Two knights defense : Bogolyubov variation C58 Two knights defense : Paoli variation C58 Two knights defense : Colman variation C58 Two knights defense : Blackburne variation C58 Two knights defense C59 Two knights defense C59 Two knights defense : Knorre variation C59 Two knights defense : Goering variation C59 Two knights defense : Steinitz variation C60 Ruy Lopez (Spanish Opening) C60 Ruy Lopez : Nuernberg variation C60 Ruy Lopez : Pollock defense C60 Ruy Lopez : Lucena defense C60 Ruy Lopez : Vinogradov variation C60 Ruy Lopez : Brentano defense C60 Ruy Lopez : Fianchetto (Smyslov/Barnes) defense C60 Ruy Lopez : Cozio defense C60 Ruy Lopez : Cozio defense, Paulsen variation C61 Ruy Lopez : Bird's defense C61 Ruy Lopez : Bird's defense, Paulsen variation C62 Ruy Lopez : Old Steinitz defense C62 Ruy Lopez : Old Steinitz defense, Nimzovich attack C62 Ruy Lopez : Old Steinitz defense, Semi-Duras variation C63 Ruy Lopez : Schliemann defense C63 Ruy Lopez : Schliemann defense, Berger variation C64 Ruy Lopez : Classical (Cordel) defense C64 Ruy Lopez : Classical defense, Zaitsev variation C64 Ruy Lopez : Classical defense, 4.c3 C64 Ruy Lopez : Classical defense, Benelux variation C64 Ruy Lopez : Classical defense, Charousek variation C64 Ruy Lopez : Classical defense, Boden variation C64 Ruy Lopez : Cordel gambit C65 Ruy Lopez : Berlin defense C65 Ruy Lopez : Berlin defense, Nyholm attack C65 Ruy Lopez : Berlin defense, Mortimer variation C65 Ruy Lopez : Berlin defense, Mortimer trap C65 Ruy Lopez : Berlin defense, Anderssen variation C65 Ruy Lopez : Berlin defense, Duras variation C65 Ruy Lopez : Berlin defense, Kaufmann variation C65 Ruy Lopez : Berlin defense, 4.O-O C65 Ruy Lopez : Berlin defense, Beverwijk variation C66 Ruy Lopez : Berlin defense, 4.O-O, d6 C66 Ruy Lopez : Berlin defense, hedgehog variation C66 Ruy Lopez : Berlin defense, Tarrasch trap C66 Ruy Lopez : Closed Berlin defense, Bernstein variation C66 Ruy Lopez : Closed Berlin defense, Showalter variation C66 Ruy Lopez : Closed Berlin defense, Wolf variation C66 Ruy Lopez : Closed Berlin defense, Chigorin variation C67 Ruy Lopez : Berlin defense, Open variation C67 Ruy Lopez : Open Berlin defense, l'Hermet variation C67 Ruy Lopez : Open Berlin defense, Showalter variation C67 Ruy Lopez : Open Berlin defense, 5...Be7 C67 Ruy Lopez : Berlin defense, Rio de Janeiro variation C67 Ruy Lopez : Berlin defense, Zukertort variation C67 Ruy Lopez : Berlin defense, Pillsbury variation C67 Ruy Lopez : Berlin defense, Winawer attack C67 Ruy Lopez : Berlin defense, Cordel variation C67 Ruy Lopez : Berlin defense, Trifunovic variation C67 Ruy Lopez : Berlin defense, Minckwitz variation C67 Ruy Lopez : Berlin defense, Rosenthal variation C68 Ruy Lopez : Exchange variation C68 Ruy Lopez : Exchange, Alekhine variation C68 Ruy Lopez : Exchange, Keres variation C68 Ruy Lopez : Exchange, Romanovsky variation C69 Ruy Lopez : Exchange variation, 5.O-O C69 Ruy Lopez : Exchange variation, Alapin gambit C69 Ruy Lopez : Exchange, Gligoric variation C69 Ruy Lopez : Exchange, Bronstein variation C70 Ruy Lopez C70 Ruy Lopez : Fianchetto defense deferred C70 Ruy Lopez : Cozio defense deferred C70 Ruy Lopez : Bird's defense deferred C70 Ruy Lopez : Alapin's defense deferred C70 Ruy Lopez : Classical defense deferred C70 Ruy Lopez : Caro variation C70 Ruy Lopez : Graz variation C70 Ruy Lopez : Taimanov (chase/wing/Accelerated counterthrust) variation C70 Ruy Lopez : Schliemann defense deferred C71 Ruy Lopez : Modern Steinitz defense C71 Ruy Lopez : Noah's ark trap C71 Ruy Lopez : Modern Steinitz defense, Three knights variation C71 Ruy Lopez : Modern Steinitz defense, Duras (Keres) variation C72 Ruy Lopez : Modern Steinitz defense, 5.O-O C73 Ruy Lopez : Modern Steinitz defense, Richter variation C73 Ruy Lopez : Modern Steinitz defense, Alapin variation C74 Ruy Lopez : Modern Steinitz defense C74 Ruy Lopez : Modern Steinitz defense, siesta variation C74 Ruy Lopez : Siesta, Kopayev variation C75 Ruy Lopez : Modern Steinitz defense C75 Ruy Lopez : Modern Steinitz defense, Rubinstein variation C76 Ruy Lopez : Modern Steinitz defense, Fianchetto (Bronstein) variation C77 Ruy Lopez : Morphy defense C77 Ruy Lopez : Four knights (Tarrasch) variation C77 Ruy Lopez : Treybal (Bayreuth) variation (Exchange var. deferred) C77 Ruy Lopez : Wormald (Alapin) attack C77 Ruy Lopez : Wormald attack, Gruenfeld variation C77 Ruy Lopez : Anderssen variation C77 Ruy Lopez : Morphy defense, Duras variation C78 Ruy Lopez : 5.O-O C78 Ruy Lopez : Wing attack C78 Ruy Lopez : ...b5 & ...d6 C78 Ruy Lopez : Rabinovich variation C78 Ruy Lopez : Archangelsk (counterthrust) variation C78 Ruy Lopez : Moeller defense C79 Ruy Lopez : Steinitz defense deferred (Russian defense) C79 Ruy Lopez : Steinitz defense deferred, Lipnitsky variation C79 Ruy Lopez : Steinitz defense deferred, Rubinstein variation C79 Ruy Lopez : Steinitz defense deferred, Boleslavsky variation C80 Ruy Lopez : Open (Tarrasch) defense C80 Ruy Lopez : Open, Tartakower variation C80 Ruy Lopez : Open, Knorre variation C80 Ruy Lopez : Open, 6.d4 C80 Ruy Lopez : Open, Riga variation C80 Ruy Lopez : Open, 6.d4 b5 C80 Ruy Lopez : Open, Friess attack C80 Ruy Lopez : Open, Richter variation C80 Ruy Lopez : Open, 7.Bb3 C80 Ruy Lopez : Open, Schlechter defense C80 Ruy Lopez : Open, Berger variation C80 Ruy Lopez : Open, Harksen gambit C80 Ruy Lopez : Open, 8.de C80 Ruy Lopez : Open, Zukertort variation C80 Ruy Lopez : Open, 8...Be6 C80 Ruy Lopez : Open, Bernstein variation C80 Ruy Lopez : Open, Bernstein variation, Karpov gambit C81 Ruy Lopez : Open, Howell attack C81 Ruy Lopez : Open, Howell attack, Ekstroem variation C81 Ruy Lopez : Open, Howell attack, Adam variation C82 Ruy Lopez : Open, 9.c3 C82 Ruy Lopez : Open, Berlin variation C82 Ruy Lopez : Open, Italian variation C82 Ruy Lopez : Open, St. Petersburg variation C82 Ruy Lopez : Open, Dilworth variation C82 Ruy Lopez : Open, Motzko attack C82 Ruy Lopez : Open, Motzko attack, Nenarokov variation C83 Ruy Lopez : Open, Classical defense C83 Ruy Lopez : Open, Malkin variation C83 Ruy Lopez : Open, 9...Be7, 10.Re1 C83 Ruy Lopez : Open, Tarrasch trap C83 Ruy Lopez : Open, Breslau variation C84 Ruy Lopez : Closed defense C84 Ruy Lopez : Closed, centre attack C84 Ruy Lopez : Closed, Basque gambit (North Spanish variation) C85 Ruy Lopez : Exchange variation doubly deferred (DERLD) C86 Ruy Lopez : Worrall attack C86 Ruy Lopez : Worrall attack, sharp line C86 Ruy Lopez : Worrall attack, solid line C87 Ruy Lopez : Closed, Averbach variation C88 Ruy Lopez : Closed C88 Ruy Lopez : Closed, Leonhardt variation C88 Ruy Lopez : Closed, Balla variation C88 Ruy Lopez : Closed, 7...d6, 8.d4 C88 Ruy Lopez : Noah's ark trap C88 Ruy Lopez : Trajkovic counter-attack C88 Ruy Lopez : Closed, 7...O-O C88 Ruy Lopez : Closed, anti-Marshall 8.a4 C88 Ruy Lopez : Closed, 8.c3 C89 Ruy Lopez : Marshall counter-attack C89 Ruy Lopez : Marshall counter-attack, 11...c6 C89 Ruy Lopez : Marshall, Kevitz variation C89 Ruy Lopez : Marshall, Main line, 12.d2d4 C89 Ruy Lopez : Marshall, Main line, 14...Qh3 C89 Ruy Lopez : Marshall, Main line, Spassky variation C89 Ruy Lopez : Marshall, Herman Steiner variation C90 Ruy Lopez : Closed (with ...d6) C90 Ruy Lopez : Closed, Pilnik variation C90 Ruy Lopez : Closed, Lutikov variation C90 Ruy Lopez : Closed, Suetin variation C91 Ruy Lopez : Closed, 9.d4 C91 Ruy Lopez : Closed, Bogolyubov variation C92 Ruy Lopez : Closed, 9.h3 C92 Ruy Lopez : Closed, Keres (9...a5) variation C92 Ruy Lopez : Closed, Kholmov variation C92 Ruy Lopez : Closed, Ragozin-Petrosian (`Keres') variation C92 Ruy Lopez : Closed, Flohr-Zaitsev system (Lenzerheide variation) C93 Ruy Lopez : Closed, Smyslov defense C94 Ruy Lopez : Closed, Breyer defense C95 Ruy Lopez : Closed, Breyer, 10.d4 C95 Ruy Lopez : Closed, Breyer, Borisenko variation C95 Ruy Lopez : Closed, Breyer, Gligoric variation C95 Ruy Lopez : Closed, Breyer, Simagin variation C96 Ruy Lopez : Closed (8...Na5) C96 Ruy Lopez : Closed, Rossolimo defense C96 Ruy Lopez : Closed (10...c5) C96 Ruy Lopez : Closed, Borisenko defense C96 Ruy Lopez : Closed, Keres (...Nd7) defense C97 Ruy Lopez : Closed, Chigorin defense C97 Ruy Lopez : Closed, Chigorin, Yugoslav system C98 Ruy Lopez : Closed, Chigorin, 12...Nc6 C98 Ruy Lopez : Closed, Chigorin, Rauzer attack C99 Ruy Lopez : Closed, Chigorin, 12...c5d4 D00 Queen's pawn game D00 Queen's pawn, Mason variation D00 Queen's pawn, Mason variation, Steinitz counter-gambit D00 Levitsky attack (Queen's Bishop attack) D00 Blackmar gambit D00 Queen's pawn : Stonewall attack D00 Queen's pawn : Chigorin variation D00 Queen's pawn : Anti-Veresov D00 Blackmar-Diemer gambit D00 Blackmar-Diemer : Euwe defense D00 Blackmar-Diemer : Lemberg counter-gambit D01 Richter-Veresov attack D01 Richter-Veresov attack, Veresov variation D01 Richter-Veresov attack, Richter variation D02 Queen's pawn game D02 Queen's pawn game, Chigorin variation D02 Queen's pawn game, Krause variation D02 Queen's pawn game D02 Queen's Bishop game D03 Torre attack (Tartakower variation) D04 Queen's pawn game D05 Queen's pawn game D05 Queen's pawn game, Zukertort variation D05 Queen's pawn game D05 Queen's pawn game, Rubinstein (Colle-Zukertort) variation D05 Colle system D06 Queen's Gambit D06 QGD : Grau (Sahovic) defense D06 QGD : Marshall defense D06 QGD : Symmetrical (Austrian) defense D07 QGD : Chigorin defense D07 QGD : Chigorin defense, Janowski variation D08 QGD : Albin counter-gambit D08 QGD : Albin counter-gambit, Lasker trap D08 QGD : Albin counter-gambit D08 QGD : Albin counter-gambit, Alapin variation D08 QGD : Albin counter-gambit, Krenosz variation D08 QGD : Albin counter-gambit, Janowski variation D08 QGD : Albin counter-gambit, Balogh variation D09 QGD : Albin counter-gambit, 5.g3 D10 QGD Slav defense D10 QGD Slav defense, Alekhine variation D10 QGD Slav : Winawer counter-gambit D10 QGD Slav defense : Exchange variation D11 QGD Slav : 3.Nf3 D11 QGD Slav : Breyer variation D11 QGD Slav : 4.e3 D12 QGD Slav : 4.e3 Bf5 D12 QGD Slav : Landau variation D12 QGD Slav : Exchange variation D12 QGD Slav : Amsterdam variation D13 QGD Slav : Exchange variation D14 QGD Slav : Exchange variation, 6.Bf4 Bf5 D14 QGD Slav : Exchange, Trifunovic variation D15 QGD Slav : 4.Nc3 D15 QGD Slav : Suechting variation D15 QGD Slav : Schlechter variation D15 QGD Slav accepted D15 QGD Slav : 5.e3 (Alekhine variation) D15 QGD Slav : Slav gambit D15 QGD Slav : Tolush-Geller gambit D16 QGD Slav accepted : Alapin variation D16 QGD Slav : Smyslov variation D16 QGD Slav : Soultanbeieff variation D16 QGD Slav : Steiner variation D17 QGD Slav : Czech defense D17 QGD Slav : Krause attack D17 QGD Slav : Carlsbad variation D17 QGD Slav : Wiesbaden variation D18 QGD Slav : Dutch variation D18 QGD Slav : Dutch, Lasker variation D19 QGD Slav : Dutch variation D19 QGD Slav : Dutch variation, Main line D19 QGD Slav : Dutch, Saemisch variation D20 Queen's gambit accepted D20 QGA : 3.e4 D20 QGA : Linares variation D20 QGA : Schwartz defense D21 QGA : 3.Nf3 D21 QGA : Ericson variation D21 QGA : Alekhine defense, Borisenko-Furman variation D22 QGA : Alekhine defense D22 QGA : Alekhine defense, Alatortsev variation D22 QGA : Haberditz variation D23 Queen's gambit accepted D23 QGA : Mannheim variation D24 QGA, 4.Nc3 D24 QGA, Bogolyubov variation D25 QGA, 4.e3 D25 QGA, Smyslov variation D25 QGA, Janowsky-Larsen variation D25 QGA, Flohr variation D26 QGA : 4...e6 D26 QGA : Classical variation D26 QGA : Classical, Furman variation D26 QGA : Classical variation, 6.O-O D26 QGA : Classical, Steinitz variation D27 QGA : Classical, 6...a6 D27 QGA : Classical, Rubinstein variation D27 QGA : Classical, Geller variation D28 QGA : Classical, 7.Qe2 D28 QGA : Classical, 7...b5 D28 QGA : Classical, Flohr variation D29 QGA : Classical, 8...Bb7 D29 QGA : Classical, Smyslov variation D30 Queen's gambit declined D30 QGD Slav D30 QGD : Stonewall variation D30 QGD Slav D30 QGD Slav : Semmering variation D30 QGD : Spielmann variation D30 QGD D30 QGD : Capablanca variation D30 QGD : Vienna variation D30 QGD : Capablanca-Duras variation D30 QGD : Hastings variation D31 QGD : 3.Nc3 D31 QGD : Janowski variation D31 QGD : Alapin variation D31 QGD : Charousek (Petrosian) variation D31 QGD : Semi-Slav D31 QGD : Semi-Slav, Noteboom variation D31 QGD : Semi-Slav, Koomen variation D31 QGD : Semi-Slav, Junge variation D31 QGD : Semi-Slav, Abrahams variation D31 QGD : Semi-Slav, Marshall gambit D32 QGD : Tarrasch defense D32 QGD : Tarrasch, von Hennig-Schara gambit D32 QGD : Tarrasch defense, 4.cd ed D32 QGD : Tarrasch defense, Tarrasch gambit D32 QGD : Tarrasch defense, Marshall gambit D32 QGD : Tarrasch defense D33 QGD : Tarrasch, Schlechter-Rubinstein system D33 QGD : Tarrasch, Folkestone (Swedish) variation D33 QGD : Tarrasch, Schlechter-Rubinstein system, Rey Ardid variation D33 QGD : Tarrasch, Prague variation D33 QGD : Tarrasch, Wagner variation D34 QGD : Tarrasch, Prague variation, 7...Be7 D34 QGD : Tarrasch, Prague variation, Normal position D34 QGD : Tarrasch, Reti variation D34 QGD : Tarrasch, Prague variation, 9.Bg5 D34 QGD : Tarrasch, Bogolyubov variation D34 QGD : Tarrasch, Stoltz variation D35 QGD : 3...Nf6 D35 QGD : Harrwitz attack D35 QGD : Exchange variation D35 QGD : Exchange, Saemisch variation D35 QGD : Exchange, positional line D35 QGD : Exchange, chameleon variation D35 QGD : Exchange, positional line, 5...c6 D36 QGD : Exchange, positional line, 6.Qc2 D37 QGD : 4.Nf3 D37 QGD : Classical variation (5.Bf4) D38 QGD : Ragozin variation D39 QGD : Ragozin, Vienna variation D40 QGD : Semi-Tarrasch defense D40 QGD : Semi-Tarrasch, Symmetrical variation D40 QGD : Semi-Tarrasch, Levenfish variation D40 QGD : Semi-Tarrasch defense, Pillsbury variation D41 QGD : Semi-Tarrasch, 5.cd D41 QGD : Semi-Tarrasch, Kmoch variation D41 QGD : Semi-Tarrasch, San Sebastian variation D41 QGD : Semi-Tarrasch with e3 D42 QGD : Semi-Tarrasch, 7.Bd3 D43 QGD Semi-Slav D43 QGD Semi-Slav : Hastings variation D44 QGD Semi-Slav : 5.Bg5 dc D44 QGD Semi-Slav : Botvinnik system (anti-Meran) D44 QGD Semi-Slav : Ekstrom variation D44 QGD Semi-Slav : Anti-Meran gambit D44 QGD Semi-Slav : Anti-Meran, Lilienthal variation D44 QGD Semi-Slav : Anti-Meran, Szabo variation D44 QGD Semi-Slav : Anti-Meran, Alatortsev system D45 QGD Semi-Slav : 5.e3 D45 QGD Semi-Slav : Stonewall defense D45 QGD Semi-Slav : Accelerated Meran (Alekhine variation) D45 QGD Semi-Slav : 5...Nd7 D45 QGD Semi-Slav : Stoltz variation D45 QGD Semi-Slav : Rubinstein (anti-Meran) system D46 QGD Semi-Slav : 6.Bd3 D46 QGD Semi-Slav : Bogolyubov variation D46 QGD Semi-Slav : Romih variation D46 QGD Semi-Slav : Chigorin defense D47 QGD Semi-Slav : 7.Bc4 D47 QGD Semi-Slav : Meran variation D47 QGD Semi-Slav : neo-Meran (Lundin variation) D47 QGD Semi-Slav : Meran, Wade variation D48 QGD Semi-Slav : Meran, 8...a6 D48 QGD Semi-Slav : Meran, Pirc variation D48 QGD Semi-Slav : Meran D48 QGD Semi-Slav : Meran, ReynOlds' variation D48 QGD Semi-Slav : Meran, Old Main line D49 QGD Semi-Slav : Meran, Blumenfeld variation D49 QGD Semi-Slav : Meran, Rabinovich variation D49 QGD Semi-Slav : Meran, Sozin variation D49 QGD Semi-Slav : Meran, Stahlberg variation D49 QGD Semi-Slav : Meran, Sozin variation D49 QGD Semi-Slav : Meran, Rellstab attack D50 QGD : 4.Bg5 D50 QGD : Been-Koomen variation D50 QGD : Semi-Tarrasch, Krause variation D50 QGD : Semi-Tarrasch, Primitive Pillsbury variation D50 QGD : Semi-Tarrasch D50 QGD : Canal (Venice) variation D51 QGD : 4.Bg5 Nbd7 D51 QGD : Rochlin variation D51 QGD : Alekhine variation D51 QGD D51 QGD : Manhattan variation D51 QGD : 5...c6 D51 QGD : Capablanca anti-Cambridge Springs variation D52 QGD D52 QGD : Cambridge Springs defense D52 QGD : Cambridge Springs defense, Bogoljubow variation D52 QGD : Cambridge Springs defense, Argentine variation D52 QGD : Cambridge Springs defense, Rubinstein variation D52 QGD : Cambridge Springs defense, Capablanca variation D52 QGD : Cambridge Springs defense, 7.cd D52 QGD : Cambridge Springs defense, Yugoslav variation D53 QGD : 4.Bg5 Be7 D53 QGD : Lasker variation D53 QGD : 4.Bg5 Be7, 5.e3 O-O D54 QGD : Anti-neo-Orthodox variation D55 QGD : 6.Nf3 D55 QGD : Pillsbury attack D55 QGD : Neo-Orthodox variation D55 QGD : Neo-Orthodox variation, 7.Bxf6 D55 QGD : Petrosian variation D55 QGD : Neo-Orthodox variation, 7.Bh4 D56 QGD : Lasker defense D56 QGD : Lasker defense, Teichmann variation D56 QGD : Lasker defense, Russian variation D57 QGD : Lasker defense, Main line D57 QGD : Lasker defense, Bernstein variation D58 QGD : Tartakower (Makagonov-Bondarevsky) system D59 QGD : Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd5 D59 QGD : Tartakower variation D60 QGD : Orthodox defense D60 QGD : Orthodox defense, Botvinnik variation D60 QGD : Orthodox defense, Rauzer variation D61 QGD : Orthodox defense, Rubinstein variation D62 QGD : Orthodox defense, 7.Qc2 c5, 8.cd (Rubinstein) D63 QGD : Orthodox defense, 7.Rc1 D63 QGD : Orthodox defense, Pillsbury attack D63 QGD : Orthodox defense, Capablanca variation D63 QGD : Orthodox defense, Swiss (Henneberger) variation D63 QGD : Orthodox defense, Swiss, Karlsbad variation D63 QGD : Orthodox defense D64 QGD : Orthodox defense, Rubinstein attack (with Rc1) D64 QGD : Orthodox defense, Rubinstein attack, Wolf variation D64 QGD : Orthodox defense, Rubinstein attack, Karlsbad variation D64 QGD : Orthodox defense, Rubinstein attack, Gruenfeld variation D65 QGD : Orthodox defense, Rubinstein attack, Main line D66 QGD : Orthodox defense, Bd3 line D66 QGD : Orthodox defense, Bd3 line, Fianchetto variation D67 QGD : Orthodox defense, Bd3 line, Capablanca freeing manoevre D67 QGD : Orthodox defense, Bd3 line, Janowski variation D67 QGD : Orthodox defense, Bd3 line D67 QGD : Orthodox defense, Bd3 line, Alekhine variation D67 QGD : Orthodox defense, Bd3 line, 11.O-O D68 QGD : Orthodox defense, Classical variation D68 QGD : Orthodox defense, Classical, 13.d1b1 (Maroczy) D68 QGD : Orthodox defense, Classical, 13.d1c2 (Vidmar) D69 QGD : Orthodox defense, Classical, 13.de D70 Neo-Gruenfeld defense D70 Neo-Gruenfeld (Kemeri) defense D71 Neo-Gruenfeld, 5.cd D72 Neo-Gruenfeld, 5.cd, Main line D73 Neo-Gruenfeld, 5.Nf3 D74 Neo-Gruenfeld, 6.cd Nxd5, 7.O-O D75 Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc3 D75 Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc D76 Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb6 D77 Neo-Gruenfeld, 6.O-O D78 Neo-Gruenfeld, 6.O-O c6 D79 Neo-Gruenfeld, 6.O-O, Main line D80 Gruenfeld defense D80 Gruenfeld : Spike gambit D80 Gruenfeld : Stockholm variation D80 Gruenfeld : Lundin variation D81 Gruenfeld : Russian variation D82 Gruenfeld : 4.Bf4 D83 Gruenfeld : Gruenfeld gambit D83 Gruenfeld : Gruenfeld gambit, Capablanca variation D83 Gruenfeld : Gruenfeld gambit, Botvinnik variation D84 Gruenfeld : Gruenfeld gambit accepted D85 Gruenfeld : Exchange variation D85 Gruenfeld : Modern Exchange variation D86 Gruenfeld : Exchange, Classical variation D86 Gruenfeld : Exchange, Larsen variation D86 Gruenfeld : Exchange, Simagin's lesser variation D86 Gruenfeld : Exchange, Simagin's improved variation D87 Gruenfeld : Exchange, Spassky variation D87 Gruenfeld : Exchange, Seville variation D88 Gruenfeld : Spassky variation, Main line, 10...cd, 11.cd D89 Gruenfeld : Spassky variation, Main line, 13.Bd3 D89 Gruenfeld : Exchange, Sokolsky variation D90 Gruenfeld : Three knights variation D90 Gruenfeld : Schlechter variation D90 Gruenfeld : Three knights variation D90 Gruenfeld : Flohr variation D91 Gruenfeld : 5.Bg5 D92 Gruenfeld : 5.Bf4 D93 Gruenfeld with Bf4 e3 D94 Gruenfeld : 5.e3 D94 Gruenfeld : Makogonov variation D94 Gruenfeld : Opovcensky variation D94 Gruenfeld with e3 Bd3 D94 Gruenfeld : Smyslov defense D94 Gruenfeld : Flohr defense D95 Gruenfeld with e3 & Qb3 D95 Gruenfeld : Botvinnik variation D95 Gruenfeld : Pachman variation D96 Gruenfeld : Russian variation D97 Gruenfeld : Russian variation with e4 D97 Gruenfeld : Russian, Alekhine (Hungarian) variation D97 Gruenfeld : Russian, Szabo (Boleslavsky) variation D97 Gruenfeld : Russian, Levenfish variation D97 Gruenfeld : Russian, Byrne (Simagin) variation D97 Gruenfeld : Russian, Prins variation D98 Gruenfeld : Russian, Smyslov variation D98 Gruenfeld : Russian, Keres variation D99 Gruenfeld defense : Smyslov, Main line D99 Gruenfeld defense : Smyslov, Yugoslav variation E00 Queen's pawn game E00 Neo-Indian (Seirawan) attack E00 Catalan Opening E01 Catalan : Closed E02 Catalan : Open, 5.Qa4 E03 Catalan : Open, Alekhine variation E03 Catalan : Open, 5.Qa4 Nbd7, 6.Qxc4 E04 Catalan : Open, 5.Nf3 E05 Catalan : Open, Classical line E06 Catalan : Closed, 5.Nf3 E07 Catalan : Closed, 6...Nbd7 E07 Catalan : Closed, Botvinnik variation E08 Catalan : Closed, 7.Qc2 E08 Catalan : Closed, Zagoryansky variation E08 Catalan : Closed, Qc2 & b3 E08 Catalan : Closed, Spassky gambit E09 Catalan : Closed, Main line E09 Catalan : Closed, Sokolsky variation E10 Queen's pawn game E10 Blumenfeld counter-gambit E10 Blumenfeld counter-gambit accepted E10 Blumenfeld counter-gambit, Dus-Chotimursky variation E10 Blumenfeld counter-gambit, Spielmann variation E10 Dzindzikhashvili defense E10 Doery defense E11 Bogo-Indian defense E11 Bogo-Indian defense, Gruenfeld variation E11 Bogo-Indian defense, Nimzovich variation E11 Bogo-Indian defense, Monticelli trap E12 Queen's Indian defense E12 Queen's Indian : Miles variation E12 Queen's Indian : Petrosian system E12 Queen's Indian : 4.Nc3 E12 Queen's Indian : 4.Nc3, Botvinnik variation E13 Queen's Indian : 4.Nc3, Main line E14 Queen's Indian : 4.e3 E14 Queen's Indian : Averbakh variation E15 Queen's Indian : 4.g3 E15 Queen's Indian : Nimzovich variation (exaggerated Fianchetto) E15 Queen's Indian : 4.g3 Bb7 E15 Queen's Indian : Rubinstein variation E15 Queen's Indian : Buerger variation E16 Queen's Indian : Capablanca variation E16 Queen's Indian : Yates variation E16 Queen's Indian : Riumin variation E17 Queen's Indian : 5.Bg2 Be7 E17 Queen's Indian : Anti-Queen's Indian system E17 Queen's Indian : Opovcensky variation E17 Queen's Indian : Old Main line, 6.O-O E17 Queen's Indian : Euwe variation E18 Queen's Indian : Old Main line, 7.Nc3 E19 Queen's Indian : Old Main line, 9.Qxc3 E20 Nimzo-Indian defense E20 Nimzo-Indian : Kmoch variation E20 Nimzo-Indian : Mikenas attack E20 Nimzo-Indian : Romanishin-Kasparov (Steiner) system E21 Nimzo-Indian : Three knights variation E21 Nimzo-Indian : Three knights, Korchnoi variation E21 Nimzo-Indian : Three knights, Euwe variation E22 Nimzo-Indian : Spielmann variation E23 Nimzo-Indian : Spielmann, 4...c5, 5.dc Nc6 E23 Nimzo-Indian : Spielmann, Karlsbad variation E23 Nimzo-Indian : Spielmann, San Remo variation E23 Nimzo-Indian : Spielmann, Staahlberg variation E24 Nimzo-Indian : Saemisch variation E24 Nimzo-Indian : Saemisch, Botvinnik variation E25 Nimzo-Indian : Saemisch variation E25 Nimzo-Indian : Saemisch, Keres variation E25 Nimzo-Indian : Saemisch, Romanovsky variation E26 Nimzo-Indian : Saemisch variation E26 Nimzo-Indian : Saemisch, O'Kelly variation E27 Nimzo-Indian : Saemisch variation E28 Nimzo-Indian : Saemisch variation E29 Nimzo-Indian : Saemisch, Main line E29 Nimzo-Indian : Saemisch, Capablanca variation E30 Nimzo-Indian : Leningrad variation E30 Nimzo-Indian : Leningrad, ...b5 gambit E31 Nimzo-Indian : Leningrad, Main line E32 Nimzo-Indian : Classical variation E32 Nimzo-Indian : Classical, Adorjan gambit E33 Nimzo-Indian : Classical, 4...Nc6 E33 Nimzo-Indian : Classical, Milner-Barry (Zurich) variation E34 Nimzo-Indian : Classical, Noa variation E35 Nimzo-Indian : Classical, Noa variation, 5.cd ed E36 Nimzo-Indian : Classical, Noa variation, 5.a3 E36 Nimzo-Indian : Classical, Botvinnik variation E36 Nimzo-Indian : Classical, Noa variation, Main line E37 Nimzo-Indian : Classical, Noa variation, Main line, 7.Qc2 E37 Nimzo-Indian : Classical, San Remo variation E38 Nimzo-Indian : Classical, 4...c5 E39 Nimzo-Indian : Classical, Pirc variation E40 Nimzo-Indian : 4.e3 E40 Nimzo-Indian : 4.e3, Taimanov variation E41 Nimzo-Indian : 4.e3 c5 E41 Nimzo-Indian : e3, Huebner variation E42 Nimzo-Indian : 4.e3 c5, 5.Ne2 (Rubinstein) E43 Nimzo-Indian : Fischer variation E44 Nimzo-Indian : Fischer variation, 5.Ne2 E45 Nimzo-Indian : 4.e3, Bronstein (Byrne) variation E46 Nimzo-Indian : 4.e3 O-O E46 Nimzo-Indian : Reshevsky variation E46 Nimzo-Indian : Simagin variation E47 Nimzo-Indian : 4.e3 O-O, 5.Bd3 E48 Nimzo-Indian : 4.e3 O-O, 5.Bd3 d5 E49 Nimzo-Indian : 4.e3, Botvinnik system E50 Nimzo-Indian : 4.e3 e8g8, 5.Nf3, without ...d5 E51 Nimzo-Indian : 4.e3 e8g8, 5.Nf3 d7d5 E51 Nimzo-Indian : 4.e3, Ragozin variation E52 Nimzo-Indian : 4.e3, Main line with ...b6 E53 Nimzo-Indian : 4.e3, Main line with ...c5 E53 Nimzo-Indian : 4.e3, Keres variation E53 Nimzo-Indian : 4.e3, Gligoric system with 7...Nbd7 E54 Nimzo-Indian : 4.e3, Gligoric system with 7...dc E54 Nimzo-Indian : 4.e3, Gligoric system, Smyslov variation E55 Nimzo-Indian : 4.e3, Gligoric system, Bronstein variation E56 Nimzo-Indian : 4.e3, Main line with 7...Nc6 E57 Nimzo-Indian : 4.e3, Main line with 8...dc and 9...cd E58 Nimzo-Indian : 4.e3, Main line with 8...Bxc3 E59 Nimzo-Indian : 4.e3, Main line E60 King's Indian defense E60 King's Indian, 3.Nf3 E60 Queen's pawn : Mengarini attack E60 King's Indian : Anti-Gruenfeld E60 King's Indian : Danube gambit E60 King's Indian : 3.g3 E60 King's Indian : 3.g3, counterthrust variation E61 King's Indian defense, 3.Nc3 E61 King's Indian : Smyslov system E62 King's Indian : Fianchetto variation E62 King's Indian : Fianchetto, Larsen system E62 King's Indian : Fianchetto, Kavalek (Bronstein) variation E62 King's Indian : Fianchetto with ...Nc6 E62 King's Indian : Fianchetto, Uhlmann (Szabo) variation E62 King's Indian : Fianchetto, lesser Simagin (Spassky) variation E62 King's Indian : Fianchetto, Simagin variation E63 King's Indian : Fianchetto, Panno variation E64 King's Indian : Fianchetto, Yugoslav system E65 King's Indian : Fianchetto, Yugoslav, 7.O-O E66 King's Indian : Fianchetto, Yugoslav Panno E67 King's Indian : Fianchetto with ...Nd7 E67 King's Indian : Fianchetto, Classical variation E68 King's Indian : Fianchetto, Classical variation, 8.e4 E69 King's Indian : Fianchetto, Classical Main line E70 King's Indian : 4.e4 E70 King's Indian : Kramer system E70 King's Indian : Accelerated Averbakh system E71 King's Indian : Makagonov system (5.h3) E72 King's Indian with e4 & g3 E72 King's Indian : Pomar system E73 King's Indian : 5.Be2 E73 King's Indian : Semi-Averbakh system E73 King's Indian : Averbakh system E74 King's Indian : Averbakh, 6...c5 E75 King's Indian : Averbakh, Main line E76 King's Indian : Four pawns attack E76 King's Indian : Four pawns attack, dynamic line E77 King's Indian : Four pawns attack, 6.Be2 E77 King's Indian : Six pawns attack E77 King's Indian : Four pawns attack E77 King's Indian : Four pawns attack, Florentine gambit E78 King's Indian : Four pawns attack, with Be2 and Nf3 E79 King's Indian : Four pawns attack, Main line E80 King's Indian : Saemisch variation E81 King's Indian : Saemisch, 5...O-O E81 King's Indian : Saemisch, Byrne variation E82 King's Indian : Saemisch, double Fianchetto variation E83 King's Indian : Saemisch, 6...Nc6 E83 King's Indian : Saemisch, Ruban variation E83 King's Indian : Saemisch, Panno formation E84 King's Indian : Saemisch, Panno Main line E85 King's Indian : Saemisch, Orthodox variation E86 King's Indian : Saemisch, Orthodox, 7.Nge2 c6 E87 King's Indian : Saemisch, Orthodox, 7.d5 E87 King's Indian : Saemisch, Orthodox, Bronstein variation E88 King's Indian : Saemisch, Orthodox, 7.d5 c6 E89 King's Indian : Saemisch, Orthodox Main line E90 King's Indian : 5.Nf3 E90 King's Indian : Larsen variation E90 King's Indian : Zinnowitz variation E91 King's Indian : 6.Be2 E91 King's Indian : Kazakh variation E92 King's Indian : Classical variation E92 King's Indian : Andersson variation E92 King's Indian : Gligoric-Taimanov system E92 King's Indian : Petrosian system E92 King's Indian : Petrosian system, Stein variation E93 King's Indian : Petrosian system, Main line E93 King's Indian : Petrosian system, Keres variation E94 King's Indian : Orthodox variation E94 King's Indian : Orthodox, Donner variation E94 King's Indian : Orthodox, 7...Nbd7 E95 King's Indian : Orthodox, 7...Nbd7, 8.Re1 E96 King's Indian : Orthodox, 7...Nbd7, Main line E97 King's Indian : Orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation) E97 King's Indian : Orthodox, Aronin-Taimanov, bayonet attack E98 King's Indian : Orthodox, Aronin-Taimanov, 9.Ne1 E99 King's Indian : Orthodox, Aronin-Taimanov, Main line E99 King's Indian : Orthodox, Aronin-Taimanov, Benko attack
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