Main Page | See live article | Alphabetical index This is the ECO (Encyclopedia of Chess Openings) classification of chess openings: Back to Chess Back to chess openings A00 = Irregular Openings A01 = Nimzovich-Larsen attack A02= Bird's Opening A03= Bird's Opening A04= Reti Opening A05= Reti Opening, 2..Nf6 A06= Reti Opening, 2..d5 A07= Reti Opening, King's Indian attack (Barcza system) A08= Reti Opening, King's Indian attack A09= Reti Opening, 2..d5 3.c4 A10= English Opening A11= English, Caro-Kann defensive system A12= English, Caro-Kann defensive system A13= English Opening A14= English, Neo-Catalan declined A15= English, 1...Nf6 (Anglo-Indian defense) A16= English Opening A17= English Opening A18= English, Mikenas-Carls variation A19= English, Mikenas-Carls, Sicilian variation A20= English Opening A21= English Opening A22= English Opening A23= English Opening, Bremen system, Keres variation A24= English Opening, Bremen system with 3...g6 A25= English Opening, Sicilian Reversed A26= English Opening, Closed system A27= English Opening, Three knights system A28= English Opening, Four knights system A29= English Opening, Four knights, kingside Fianchetto A30= English Opening, Symmetrical variation A31= English Opening, Symmetrical, Benoni formation A32= English Opening, Symmetrical A33= English Opening, Symmetrical A34= English Opening, Symmetrical A35= English Opening, Symmetrical A36= English Opening, Symmetrical A37= English Opening, Symmetrical A38= English Opening, Symmetrical A39= English Opening, Symmetrical, Main line with d4 A40= Queen's pawn A41= Queen's pawn A42= Modern defense, Averbakh system A43= Old Benoni defense A44= Old Benoni defence A45= Queen's pawn game A46= Queen's pawn game A47= Queen's Indian defense A48= King's Indian, East Indian defense A49= King's Indian, Fianchetto without c4 A50= Queen's pawn game A51= Budapest defense declined A52= Budapest defense A53= Old Indian defense A54= Old Indian, Ukrainian variation A55= Old Indian, Main line A56= Benoni defense A57= Benko gambit A58= Benko gambit accepted A59= Benko gambit, 7.e4 A60= Benoni defense A61= Benoni defense A62= Benoni, Fianchetto variation A63= Benoni, Fianchetto variation, 9...Nbd7 A64= Benoni, Fianchetto variation, 11...Re8 A65= Benoni, 6.e4 A66= Benoni, pawn storm variation A67= Benoni, Taimanov variation A68= Benoni, Four pawns attack A69= Benoni, Four pawns attack, Main line A70= Benoni, Classical with e4 and Nf3 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 A81= Dutch defense A82= Dutch, Staunton gambit A83= Dutch, Staunton gambit, Staunton's line A84= Dutch defense A85= Dutch with 2.c4 & 3.Nc3 A86= Dutch with 2.c4 & 3.g3 A87= Dutch, Leningrad, Main variation A88= Dutch, Leningrad, Main variation with 7...c6 A89= Dutch, Leningrad, Main variation with Nc6 A90= Dutch defense A91= Dutch defense A92= Dutch defense A93= Dutch, Stonewall, Botwinnik variation A94= Dutch, Stonewall with Ba3 A95= Dutch, Stonewall with Nc3 A96= Dutch, Classical variation A97= Dutch, Ilyin-Genevsky variation A98= Dutch, Ilyin-Genevsky variation with Qc2 A99= Dutch, Ilyin-Genevsky variation with b3 B00= King's pawn Opening B01= Scandinavian (centercounter) center defense B02= Alekhine's defense B03= Alekhine's defense B04= Alekhine's defense, Modern variation B05= Alekhine's defense, Modern variation, 4...Bg4 B06= Robatsch (Modern) defense B07= Pirc defense B08= Pirc, Classical (Two knights) system B09= Pirc, Austrian attack B10= Caro-Kann defense B11= Caro-Kann, Two knights, 3...Bg4 B12= Caro-Kann defense B13= Caro-Kann, Exchange variation B14= Caro-Kann, Panov-Botvinnik attack, 5...e6 B15= Caro-Kann defense B16= Caro-Kann, Bronstein-Larsen variation B17= Caro-Kann, Steinitz variation B18= Caro-Kann, Classical variation B19= Caro-Kann, Classical, 7...Nd7 B20= Sicilian defense B21= Sicilian, Grand Prix attack B22= Sicilian, Alapin's variation (2.c3) B23= Sicilian, Closed B24= Sicilian, Closed B25= Sicilian, Closed B26= Sicilian, Closed, 6.Be3 B27= Sicilian defense B28= Sicilian, O'Kelly variation B29= Sicilian, Nimzovich-Rubinstein variation B30= Sicilian defense B31= Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6) B32= Sicilian defense B33= Sicilian defense B34= Sicilian, Accelerated Fianchetto, Exchange variation B35= Sicilian, Accelerated Fianchetto, Modern variation with Bc4 B36= Sicilian, Accelerated Fianchetto, Maroczy bind B37= Sicilian, Accelerated Fianchetto, Maroczy bind, 5...Bg7 B38= Sicilian, Accelerated Fianchetto, Maroczy bind, 6.Be3 B39= Sicilian, Accelerated Fianchetto, Breyer variation B40= Sicilian defense B41= Sicilian, Kan variation B42= Sicilian, Kan, 5.Bd3 B43= Sicilian, Kan, 5.Nc3 B44= Sicilian defense B45= Sicilian, Taimanov variation B46= Sicilian, Taimanov variation B47= Sicilian, Taimanov (Bastrikov) variation B48= Sicilian, Taimanov variation B49= Sicilian, Taimanov variation B50= Sicilian B51= Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack B52= Sicilian, Canal-Sokolsky attack, 3...Bd7 B53= Sicilian, Chekhover variation B54= Sicilian B55= Sicilian, Prins variation, Venice attack B56= Sicilian B57= Sicilian, Sozin (not Scheveningen) B58= Sicilian, Classical B59= Sicilian, Boleslavsky variation, 7.Nb3 B60= Sicilian, Richter-Rauzer B61= Sicilian, Richter-Rauzer, Larsen variation, 7.Qd2 B62= Sicilian, Richter-Rauzer, 6...e6 B63= Sicilian, Richter-Rauzer, Rauzer attack B64= Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defense, 9.f4 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 B72= Sicilian, Dragon, 6.Be3 B73= Sicilian, Dragon, Classical, 8.O-O B74= Sicilian, Dragon, Classical, 9.Nb3 B75= Sicilian, Dragon, Yugoslav attack B76= Sicilian, Dragon, Yugoslav attack, 7...O-O B77= Sicilian, Dragon, Yugoslav attack, 9.Bc4 B78= Sicilian, Dragon, Yugoslav attack, 10.O-O-O B79= Sicilian, Dragon, Yugoslav attack, 12.h4 B80= Sicilian, Scheveningen variation B81= Sicilian, Scheveningen, Keres attack B82= Sicilian, Scheveningen, 6.f4 B83= Sicilian, Scheveningen, 6.Be2 B84= Sicilian, Scheveningen (Paulsen), Classical variation B85= Sicilian, Scheveningen, Classical variation with ...Qc7 and ...Nc6 B86= Sicilian, Sozin attack B87= Sozin with ...a6 and ...b5 B88= Sicilian, Sozin, Leonhardt variation B89= Sicilian, Sozin, 7.Be3 B90= Sicilian, Najdorf B91= Sicilian, Najdorf, Zagreb (Fianchetto) variation B92= Sicilian, Najdorf, Zagreb (Fianchetto) variation B93= Sicilian, Najdorf, 6.f4 B94= Sicilian, Najdorf, 6.Bg5 B95= Sicilian, Najdorf, 6...e6 B96= Sicilian, Najdorf, 7.f4 B97= Sicilian, Najdorf, 7...Qb6 B98= Sicilian, Najdorf, 7...Be7 B99= Sicilian, Najdorf, 7...Be7 Main line C00= French defense C01= French, Exchange variation C02= French, Advance variation C03= French, Tarrasch C04= French, Tarrasch, Guimard Main line C05= French, Tarrasch, Closed variation C06= French, Tarrasch, Closed variation, Main line C07= French, Tarrasch, Open variation C08= French, Tarrasch, Open, 4.exd5 exd5 C09= French, Tarrasch, Open variation, Main line C10= French, Paulsen variation C11 = French defense C12= French, MacCutcheon variation C13= French, Classical C14= French, Classical variation C15= French, Winawer (Nimzovich) variation C16= French, Winawer, Advance variation C17= French, Winawer, Advance variation C18= French, Winawer, Advance variation C19= French, Winawer, Advance, 6...Ne7 C20= King's pawn game C21= center game C22= center game C23= Bishop's Opening C24= Bishop's Opening, Berlin defense C25= Vienna game C26= Vienna, Falkbeer variation C27= Vienna game C28= Vienna game C29= Vienna gambit, Kaufmann variation C30= King's gambit C31= KGD, Falkbeer counter-gambit C32= KGD, Falkbeer, 5. dxe4 C33= King's gambit accepted C34= King's knight's gambit C35= KGA, Cunningham defense C36= KGA, Abbazia defense (Classical defense, Modern defense) C37= KGA, Quaade gambit C38= King's knight's gambit C39= King's knight's gambit C40= King's knight Opening C41= Philidor's defense C42= Petrov's defense C43= Petrov, Modern (Steinitz) attack C44= King's pawn game C45= Scotch game C46= Three knights game C47= Four knights, Scotch variation C48= Four knights, Spanish variation C49= Four knights, double Ruy Lopez C50= King's pawn game C51= Evans gambit declined C52= Evans gambit C53= Giuoco piano C54= Guioco piano C55= Two knights defense C56= Two knights defense C57= Two knights defense C58= Two knights defense C59= Two knights defense C60= Ruy Lopez C61= Ruy Lopez, Bird's defense C62= Ruy Lopez, Old Steinitz defence C63= Ruy Lopez, Schliemann defense C64= Ruy Lopez, Classical (Cordel) defence C65= Ruy Lopez, Berlin defense C66= Ruy Lopez, Berlin defence, 4.O-O, d6 C67= Ruy Lopez, Berlin defence, Open variation C68= Ruy Lopez, Exchange variation C69= Ruy Lopez, Exchange variation, 5.O-O C70= Ruy Lopez, C71= Ruy Lopez, Modern Steinitz defense C72= Ruy Lopez, Modern Steinitz defense 5.0-0 C73= Ruy Lopez, Modern Steinitz defense, Richter variation C74= Ruy Lopez, Modern Steinitz defense C75= Ruy Lopez, Modern Steinitz defense C76= Ruy Lopez, Modern Steinitz defense, Fianchetto (Bronstein) variation C77= Ruy Lopez, Morphy defence C78= Ruy Lopez, 5.O-O C79= Ruy Lopez, Steinitz defense deferred (Russian defence) C80= Ruy Lopez, Open (Tarrasch) defence C81= Ruy Lopez, Open, Howell attack C82= Ruy Lopez, Open, 9.c3 C83= Ruy Lopez, Open, Classical defence C84= Ruy Lopez, Closed defense C85= Ruy Lopez, Exchange variation doubly deferred (DERLD) C86= Worrall attack C87= Ruy Lopez, Closed, Averbach variation C88= Ruy Lopez, Closed C89= Ruy Lopez, Marshall counter-attack C90= Ruy Lopez, closed (with ...d6) C91= Ruy Lopez, closed, 9.d4 C92= Ruy Lopez, closed, 9.d4 C93= Ruy Lopez, closed, Smyslov defense C94= Ruy Lopez, Closed, Breyer defense C95= Ruy Lopez, closed, Breyer, 10.d4 C96= Ruy Lopez, closed, 8...Na5 C97= Ruy Lopez, Closed, Chigorin defense C98= Ruy Lopez, Closed, Chigorin, 12...Nc6 C99= Ruy Lopez, Closed, Chigorin, 12...c5d4 D00= Queen's pawn game D01= Richter-Veresov attack D02= Queen's pawn game, 2. Nf3 D03= Torre attack, Tartakower variation D04= Queen's pawn game D05= Queen's pawn game, Zukertort variation D06= Queen's Gambit D07= QGD; Chigorin defense D08= QGD; Albin counter-gambit D09= QGD; Albin counter-gambit, 5.g3 D10= QGD; Slav defense D11= QGD; Slav defense, 3.Nf3 D12= QGD; Slav defense, 4.e3 Bf5 D13= QGD; Slav defense, Exchange variation D14= QGD; Slav defense, Exchange variation D15= QGD; Slav accepted, Exchange variation, 6.Bf4 Bf5 D16= QGD; Slav accepted, Alapin variation D17= QGD; Slav defense, Czech defence D18= QGD; Dutch variation D19= QGD; Dutch variation D20= Queen's Gambit accepted D21= QGA, 3.Nf3 D22= QGA; Alekhine defense D23= Queen's gambit accepted D24= QGA, 4.Nc3 D25= QGA, 4.e3 D26= QGA; classical variation D27= QGA; classical variation D28= QGA; Classical variation 7.Qe2 D29= QGA; Classical variation 8...Bb7 D30= QGD D31= QGD, 3.Nc3 D32= QGD; Tarrasch defense D33= QGD; Tarrasch, Schlechter-Rubinstein system D34= QGD; Tarrasch, 7...Be7 D35= QGD; 3...Nf6 D36= QGD; Exchange, positional line, 6.Qc2 D37= QGD; 4.Nf3 D38= QGD; Ragozin variation D39= QGD; Ragozin, Vienna variation D40= QGD; Semi-Tarrasch defense D41= QGD; Semi-Tarrasch, 5.cd D42= QGD; Semi-Tarrasch, 7.Bd3 D43= QGD; Semi-Slav D44= QGD; Semi-Slav 5.Bg5 dc D45= QGD; Semi-Slav 5.e3 D46= QGD; Semi-Slav 6.Bd3 D47= QGD; Semi-Slav 7.Bc4 D48= QGD; Meran, 8...a6 D49= QGD; Meran, 11. Nxb5 D50= QGD; 4.Bg5 D51= QGD; 4.Bg5 Nbd7 D52= QGD D53= QGD; 4.Bg5 Be7 D54= QGD; Anti-neo-Orthodox variation D55= QGD; 6.Nf3 D56= QGD; Lasker defense D57= QGD; Lasker defense, Main line D58= QGD; Tartakower (Makagonov-Bondarevsky) system D59= QGD; Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd5 D60= QGD; Orthodox defense D61= QGD; Orthodox defense, Rubinstein variation D62= QGD; Orthodox defense, 7.Qc2 c5, 8.cd (Rubinstein) D63= QGD; Orthodox defense, 7.Rc1 D64= QGD; Orthodox defense, Rubinstein attack (with Rc1) D65= QGD; Orthodox defense, Rubinstein attack, Main line D66= QGD; Orthodox defense, Bd3 line D67= QGD; Orthodox defense, Bd3 line, Capablanca freeing manoever D68= QGD; Orthodox defense, Classical variation D69= QGD; Orthodox defense, Classical, 13.dxe5 D70= Neo-Gruenfeld 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 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 D81= Gruenfeld; Russian variation D82= Gruenfeld 4.Bf4 D83= Gruenfeld gambit D84= Gruenfeld gambit accepted D85= Gruenfeld, exchange variation D86= Gruenfeld, Exchange, Classical variation D87= Gruenfeld, Exchange, Spassky variation D88= Gruenfeld, Spassky variation, Main line, 10...cd, 11.cd D89= Gruenfeld, Spassky variation, Main line, 13.Bd3 D90= Gruenfeld, Three knights variation D91= Gruenfeld, Three knights variation D92= Gruenfeld, 5.Bf4 D93= Gruenfeld with 5. Bf4 O-O 6. e3 D94= Gruenfeld, 5.e3 D95= Gruenfeld with 5. e3 O-O 6. Qb3 D96= Gruenfeld, Russian variation D97= Gruenfeld, Russian variation with 7. e4 D98= Gruenfeld, Russian, Smyslov variation D99= Gruenfeld defense, Smyslov, Main line E00= Queen's pawn game E01= Catalan, closed E02= Catalan, open, 5.Qa4 E03= Catalan, open, Alekhine variation E04= Catalan, Open, 5.Nf3 E05= Catalan, Open, Classical line E06= Catalan, Closed, 5.Nf3 E07= Catalan, Closed, 6...Nbd7 E08= Catalan, Closed, 7.Qc2 E09= Catalan, Closed, Main line E10= Queen's pawn game 3. Nf3 E11= Bogo-Indian defense E12= Queen's Indian defense E13= Queen's Indian, 4.Nc3, Main line E14= Queen's Indian, 4.e3 E15= Queen's Indian, 4.g3 E16= Queen's Indian, Capablanca variation E17= Queen's Indian, 5.Bg2 Be7 E18= Queen's Indian, Old Main line, 7.Nc3 E19= Queen's Indian, Old Main line, 9.Qxc3 E20= Nimzo-Indian defense E21= Nimzo-Indian, Three knights variation E22= Nimzo-Indian, Spielmann variation E23= Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc6 E24= Nimzo-Indian, Saemisch variation E25= Nimzo-Indian, Saemisch variation, Keres variation E26= Nimzo-Indian, Saemisch variation, 4. a3 Bxc3+ 5. bxc3 c5 6. e3 E27= Nimzo-Indian, Saemisch variation, 5...0-0 E28= Nimzo-Indian, Saemisch variation, 6. e3 E29= Nimzo-Indian, Saemisch variation, Main line E30= Nimzo-Indian, Leningrad variation, E31= Nimzo-Indian, Leningrad variation, main line E32= Nimzo-Indian, Classical variation E33= Nimzo-Indian, Classical variation, 4...Nc6 E34= Nimzo-Indian, Classical, Noa variation E35= Nimzo-Indian, Classical, Noa variation, 5. cxd5 exd5 E36= Nimzo-Indian, Classical, Noa variation, 5. a3 E37= Nimzo-Indian, Classical, Noa variation, Main line, 7.Qc2 E38= Nimzo-Indian, Classical, 4...c5 E39= Nimzo-Indian, Classical, Pirc variation E40= Nimzo-Indian, 4.e3 E41= Nimzo-Indian, 4.e3 c5 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 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 E52= Nimzo-Indian, 4.e3, Main line with ...b6 E53= Nimzo-Indian, 4.e3, Main line with ...c5 E54= Nimzo-Indian, 4.e3, Gligoric system with 7...dc 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...dxc4 and 9...Bxc4 cxd4 E58= Nimzo-Indian, 4.e3, Main line with 8...Bxc3 E59= Nimzo-Indian, 4.e3, Main line E60= King's Indian defense E61= King's Indian defense, 3.Nc3 E62= King's Indian, Fianchetto variation E63= King's Indian, Fianchetto, Panno variation E64= King's Indian, Fianchetto, Yugoslav system E65= King's Indian, Yugoslav, 7.O-O E66= King's Indian, Fianchetto, Yugoslav Panno E67= King's Indian, Fianchetto with ...Nd7 E68= King's Indian, Fianchetto, Classical variation, 8.e4 E69= King's Indian, Fianchetto, Classical Main line E70= King's Indian, 4.e4 E71= King's Indian, Makagonov system (5.h3) E72= King's Indian with e4 & g3 E73= King's Indian, 5.Be2 E74= King's Indian, Averbakh, 6...c5 E75= King's Indian, Averbakh, Main line E76= King's Indian, Four pawns attack E77= King's Indian, Four pawns attack, 6.Be2 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 E82= King's Indian, Saemisch, double Fianchetto variation E83= King's Indian, Saemisch, 6...Nc6 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 E88= King's Indian, Saemisch, Orthodox, 7.d5 c6 E89= King's Indian, Saemisch, Orthodox Main line E90= King's Indian, 5.Nf3 E91= King's Indian, 6.Be2 E92= King's Indian, Classical variation E93= King's Indian, Petrosian system, Main line E94= King's Indian, Orthodox variation 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) E98= King's Indian, Orthodox, Aronin-Taimanov, 9.Ne1 E99= King's Indian, Orthodox, Aronin-Taimanov, Main line SEE ALSO Chess This article is from Wikipedia. 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