- List of chess openings
This is a list of chess openings, organized by the
Encyclopaedia of Chess Openings (ECO) code. In 1966,Chess Informant categorized thechess opening s into five broad areas ("A" through "E"), with each of those broken down into one hundred subcategories ("00" through "99"). The openings were published in five volumes of Encyclopaedia of Chess Openings, with volumes labeled "A" through "E". This is a list of chess openings by the ECO classification.A
* White first moves other than 1.e4, 1.d4: Irregular openings (A00-A39)
* 1.d4 without 1...d5 or 1...Nf6: Atypical replies to 1.d4 (A40-A44)
* 1.d4 Nf6 without 2.c4: Atypical replies to 1...Nf6 (A45-A49)
* 1.d4 Nf6 2.c4 without 2...e6 or 2...g6: Atypical Indian systems (A50-A79)
* 1.d4 f5:Dutch Defence (A80-A99)A00-A39
White first moves other than 1.e4, 1.d4: Irregular openings (A00-A39)
*A00 Irregular Openings:*Anderssen's Opening : 1. a3::*Anderssen's Opening , Polish Gambit: 1. a3 a5 2. b4::*Anderssen's Opening , Creepy Crawly Formation: 1. a3 e5 2. h3 d5::*Anderssen's Opening , Andersspike: 1. a3 g6 2. g4:*Ware Opening : 1. a4::*Ware Opening , Wing Gambit: 1. a4 b5 2. axb5 Bb7::*Ware Opening , Ware Gambit: 1. a4 e5 2. a5 d5 3. e3 f5 4. a6::*Ware Opening , Crab Variation: 1. a4 e5 2. h4:*Durkin Opening : 1. Na3:*Sokolsky Opening : 1. b4::*Sokolsky Opening , Birmingham Gambit: 1. b4 c5::*Sokolsky Opening , Outflank Variation: 1. b4 c6::*Sokolsky Opening , Schuhler Gambit: 1. b4 c6 2. Bb2 a5 3. b5 cxb5 4. e4::*Sokolsky Opening , Myers Variation: 1. b4 d5 2. Bb2 c6 3. a4::*Sokolsky Opening , Bugayev Attack: 1. b4 e5 2. a3::*Sokolsky Opening , Wolferts Gambit: 1. b4 e5 2. Bb2 c5:*Saragossa Opening : 1.c3:*Dunst Opening : 1. Nc3:*Van 't Kruijs Opening : 1.e3:*Mieses Opening : 1. d3:*Barnes Opening : 1. f3:*Benko's Opening : 1. g3:*Grob's Attack : 1. g4:*Clemenz Opening : 1. h3:*Desprez Opening : 1. h4:*Amar Opening : 1. Nh3
*A01Larsen's Opening , 1. b3
*A02Bird's Opening , 1. f4
*A03 Bird's Opening, 1...d5
*A04Réti Opening , 1. Nf3
*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
*A10English 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 defence)
*A16 English Opening
*A17 English Opening, Hedgehog Defence
*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 d4A40-A44
1.d4 without 1...d5 or 1...Nf6: Atypical replies to 1.d4 (A40-A44)
*A40Queen's Pawn Game (includingEnglish Defence ,Englund Gambit ,Queen's Knight Defence ,Polish Defence andKeres Defence )
*A41 Queen's Pawn Game,Wade Defence
*A42Modern defence , Averbakh system alsoWade Defence
*A43Old Benoni defence
*A44 Old Benoni defenceA45-A49
1.d4 Nf6 without 2.c4: Atypical replies to 1...Nf6 (A45-A49)
*A45 Queen's Pawn Game
*A46Queen's Pawn Game
*A47Queen's Indian Defence
*A48King's Indian ,East Indian defence
*A49 King's Indian, Fianchetto without c4A50-A79
1.d4 Nf6 2.c4 without 2...e6 or 2...g6: Atypical Indian systems (A50-A79)
*A50 Queen's Pawn Game,Black Knights' Tango
*A51Budapest Gambit declined
*A52 Budapest Gambit
*A53Old Indian Defence
*A54 Old Indian, Ukrainian variation
*A55 Old Indian, Main line
*A56Benoni Defence
*A57Benko gambit
*A58 Benko gambit accepted
*A59Benko gambit, 7.e4
*A60 Benoni defence
*A61 Benoni defence
*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
*A67Benoni, 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.f3A80-A99
1.d4 f5:
Dutch Defence (A80-A99)
*A80Dutch Defence
*A81 Dutch defence
*A82Dutch, Staunton gambit , also includesBalogh Defence
*A83 Dutch, Staunton gambit, Staunton's line
*A84 Dutch defence
*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 defence
*A91 Dutch defence
*A92 Dutch defence
*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 b3B
B00-B19
1.e4 without 1...c5, 1...e6 or 1...e5 (B00-B19)
*B00King's pawn Opening without 1... e5, 1... d5, 1... Nf6, 1... g6, 1... d6, 1... c6, 1... c5. (includesNimzowitsch Defence ,St. George Defence ,Owen's Defence ,Hippopotamus Defence ,Fred Defence and others)
*B01Scandinavian Defence (Center Counter Defence)
*B02Alekhine's Defence
*B03 Alekhine's Defence 3.d4
*B04 Alekhine's defence, Modern variation
*B05 Alekhine's defence, Modern variation, 4...Bg4
*B06 Robatsch (Modern) defence, includingMonkey's Bum
*B07Pirc defence
*B08Pirc, Classical (Two knights) system
*B09Pirc, Austrian attack
*B10Caro-Kann Defence
*B11 Caro-Kann, Two knights, 3...Bg4
*B12 Caro-Kann defence
*B13 Caro-Kann, Exchange variation
*B14 Caro-Kann, Panov-Botvinnik attack, 5...e6
*B15 Caro-Kann defence
*B16 Caro-Kann, Bronstein-Larsen variation
*B17 Caro-Kann, Steinitz variation
*B18 Caro-Kann, Classical variation
*B19 Caro-Kann, Classical, 7...Nd7B20-B99
1.e4 c5:
Sicilian Defence (B20-B99)
*B20Sicilian defence
*B21 Sicilian, Grand Prix attack andSmith-Morra Gambit , including theSiberian Trap
*B22Sicilian Defence, Alapin Variation (2.c3)
*B23 Sicilian, Closed
*B24 Sicilian, Closed
*B25 Sicilian, Closed
*B26 Sicilian, Closed, 6.Be3
*B27 Sicilian defence
*B28 Sicilian, O'Kelly variation
*B29 Sicilian, Nimzovich-Rubinstein variation
*B30 Sicilian defence
*B31 Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6)
*B32 Sicilian defence
*B33 Sicilian, Sveshnikov (Lasker-Pelikan) variation
*B34Sicilian Defence, Accelerated Fianchetto , Exchange variation
*B35Sicilian Defence, Accelerated Fianchetto , Modern variation with Bc4
*B36Sicilian Defence, Accelerated Fianchetto , Maroczy bind
*B37Sicilian Defence, Accelerated Fianchetto , Maroczy bind, 5...Bg7
*B38Sicilian Defence, Accelerated Fianchetto , Maroczy bind, 6.Be3
*B39Sicilian Defence, Accelerated Fianchetto , Breyer variation
*B40 Sicilian defence
*B41 Sicilian, Kan variation
*B42 Sicilian, Kan, 5.Bd3
*B43 Sicilian, Kan, 5.Nc3
*B44 Sicilian defence
*B45 Sicilian, Taimanov variation
*B46 Sicilian, Taimanov variation
*B47Sicilian, Taimanov (Bastrikov) variation
*B48 Sicilian, Taimanov variation
*B49 Sicilian, Taimanov variation
*B50 Sicilian
*B51 Sicilian, Canal-Sokolsky 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) includingMagnus Smith Trap
*B58 Sicilian, Classical
*B59 Sicilian, Boleslavsky variation, 7.Nb3
*B60Sicilian, 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 defence, 9.f4
*B65 Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd4
*B66 Sicilian, Richter-Rauzer, Rauzer attack, 7...a6
*B67 Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 8...Bd7
*B68 Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 9...Be7
*B69 Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defence, 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
*B76Sicilian, Dragon, Yugoslav attack, 7...O-O
*B77Sicilian, Dragon, Yugoslav attack, 9.Bc4
*B78Sicilian, Dragon, Yugoslav attack, 10.O-O-O
*B79Sicilian, Dragon, Yugoslav attack, 12.h4
*B80Sicilian Defence, 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
*B89Sicilian, Sozin, 7.Be3
*B90 Sicilian, Najdorf
*B91 Sicilian, Najdorf, Zagreb (Fianchetto) variation (6.g3)
*B92 Sicilian, Najdorf, Opocensky variation (6.Be2)
*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 includingPoisoned Pawn Variation
*B98 Sicilian, Najdorf, 7...Be7
*B99Sicilian, Najdorf, 7...Be7 Main line C
C00-C19
1.e4 e6:
French Defence (C00-C19)
*C00French Defence
*C01 French, Exchange Variation,Kingston Defence
*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 Defence
*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
*C18French, Winawer, Advance Variation
*C19 French, Winawer, Advance, 6...Ne7C20-C99
1.e4 e5:
Open Game (C20-C99)
*C20King's Pawn Game (includesAlapin's Opening ,Lopez Opening ,Napoleon Opening ,Portuguese Opening andParham Attack )
*C21Center Game (includesDanish Gambit )
*C22 Center Game
*C23Bishop's Opening
*C24 Bishop's Opening, Berlin Defence
*C25Vienna Game
*C26 Vienna Game, Falkbeer Variation
*C27 Vienna Game,Frankenstein-Dracula Variation
*C28 Vienna Game
*C29 Vienna Gambit, Kaufmann Variation includingWürzburger Trap
*C30King's Gambit
*C31 King's Gambit Declined, Falkbeer Countergambit
*C32 King's Gambit Declined, Falkbeer, 5. dxe4
*C33 King's Gambit Accepted
*C34 King's Gambit Accepted, includingFischer Defence
*C35 King's Gambit Accepted, Cunningham Defence
*C36 King's Gambit Accepted, Abbazia Defence (Classical Defence, Modern Defence)
*C37 King's Gambit Accepted, Quaade Gambit
*C38 King's Gambit Accepted
*C39KGA, Allagier & Kiesertisky Gambits includingRice Gambit
*C40King's Knight Opening (includesGunderam Defence ,Greco Defence ,Damiano Defence ,Elephant Gambit , andLatvian Gambit .)
*C41Philidor Defence
*C42Petrov's Defence , includingMarshall Trap
*C43 Petrov's Defence, Modern (Steinitz) Attack
*C44 King's Pawn Game (includesPonziani Opening ,Inverted Hungarian Opening ,Irish Gambit ,Konstantinopolsky Opening and someScotch Game )
*C45Scotch Game
*C46Three Knights Game includingMüller-Schulze Gambit
*C47Four Knights Game , Scotch Variation
*C48 Four Knights Game, Spanish Variation
*C49 Four Knights Game, Double Ruy Lopez
*C50King's Pawn Game (includesBlackburne Shilling Gambit , Hungarian Defence,Italian Gambit ,Légal Trap ,Rousseau Gambit and Giuoco Pianissimo)
*C51Evans Gambit
*C52 Evans Gambit with 4...Bxb4 5.c3 Ba5
*C53Giuoco Piano
*C54 Giuoco Piano
*C55Two Knights Defence
*C56 Two Knights Defence
*C57 Two Knights Defence, including theFried Liver Attack
*C58 Two Knights Defence
*C59 Two Knights Defence
*C60Ruy Lopez
*C61Ruy Lopez, Bird's Defence
*C62Ruy Lopez, Old Steinitz Defence
*C63Ruy Lopez, Schliemann Defence
*C64Ruy Lopez, Classical (Cordel) Defence
*C65Ruy Lopez, Berlin Defence includingMortimer Trap
*C66 Ruy Lopez, Berlin Defence, 4.O-O, d6
*C67 Ruy Lopez, Berlin Defence, Open variation
*C68Ruy Lopez, Exchange Variation
*C69 Ruy Lopez, Exchange Variation, 5.O-O
*C70 Ruy Lopez
*C71Ruy Lopez, Modern Steinitz Defence includingNoah's Ark Trap
*C72 Ruy Lopez, Modern Steinitz Defence 5.0-0
*C73 Ruy Lopez, Modern Steinitz Defence, Richter variation
*C74 Ruy Lopez, Modern Steinitz Defence
*C75 Ruy Lopez, Modern Steinitz Defence
*C76 Ruy Lopez, Modern Steinitz Defence, Fianchetto (Bronstein) variation
*C77Ruy Lopez, Morphy Defence
*C78Ruy Lopez, 5.O-O
*C79Ruy Lopez, Steinitz Defence Deferred (Russian Defence)
*C80Ruy Lopez, Open (Tarrasch) Defence
*C81Ruy Lopez, Open, Howell Attack
*C82 Ruy Lopez, Open, 9.c3
*C83Ruy Lopez, Open, Classical Defence
*C84Ruy Lopez, Closed Defence
*C85Ruy Lopez, Exchange Variation Doubly Deferred (DERLD)
*C86Ruy Lopez, Worrall Attack
*C87 Ruy Lopez, Closed, Averbach Variation
*C88 Ruy Lopez, Closed
*C89Ruy Lopez, Marshall Counterattack
*C90 Ruy Lopez, Closed (with ...d6)
*C91 Ruy Lopez, Closed, 9.d4
*C92Ruy Lopez, Closed, 9.h3
*C93Ruy Lopez, Closed, Smyslov Defence
*C94Ruy Lopez, Closed, Breyer Defence
*C95 Ruy Lopez, Closed, Breyer, 10.d4
*C96 Ruy Lopez, Closed, 8...Na5
*C97Ruy Lopez, Closed, Chigorin Defence
*C98 Ruy Lopez, Closed, Chigorin, 12...Nc6
*C99 Ruy Lopez, Closed, Chigorin, 12...c5d4D
D00-D69
1.d4 d5:
Closed Game (D00-D69)
*D00Queen's Pawn Game (includingBlackmar-Diemer Gambit ,Halosar Trap and others)
*D01Richter-Veresov Attack
*D02 Queen's Pawn Game, 2. Nf3
*D03Torre Attack , Tartakower variation
*D04 Queen's Pawn Game
*D05 Queen's Pawn Game, Zukertort variation (includingColle system )
*D06Queen's Gambit (including theBaltic Defence ,Marshall Defence andSymmetrical Defence )
*D07 QGD; Chigorin defence
*D08 QGD;Albin Countergambit andLasker Trap
*D09 QGD; Albin Countergambit, 5.g3
*D10 QGD;Slav Defence
*D11 QGD; Slav defence, 3.Nf3
*D12 QGD; Slav defence, 4.e3 Bf5
*D13 QGD; Slav defence, Exchange variation
*D14 QGD; Slav defence, Exchange variation
*D15QGD; Slav, 4.Nc3
*D16 QGD; Slav accepted, Alapin variation
*D17 QGD; Slav defence, Czech defence
*D18 QGD; Dutch variation
*D19 QGD; Dutch variation
*D20Queen's Gambit Accepted
*D21 QGA, 3.Nf3
*D22 QGA; Alekhine defence
*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
*D30Queen's Gambit Declined
*D31 QGD, 3.Nc3
*D32 QGD;Tarrasch Defence
*D33 QGD; Tarrasch, Schlechter-Rubinstein system
*D34 QGD; Tarrasch, 7...Be7
*D35 QGD; Exchange Variation
*D36 QGD; Exchange, positional line, 6.Qc2
*D37 QGD; 4.Nf3
*D38 QGD; Ragozin variation
*D39 QGD; Ragozin, Vienna variation
*D40 QGD; Semi-Tarrasch defence
*D41 QGD; Semi-Tarrasch, 5.cd
*D42 QGD; Semi-Tarrasch, 7.Bd3
*D43 QGD;Semi-Slav Defence
*D44QGD; Semi-Slav 5.Bg5 dxc4
*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 (Cambridge Springs Defence andElephant Trap )
*D52 QGD
*D53 QGD; 4.Bg5 Be7
*D54 QGD; Anti-neo-Orthodox variation
*D55 QGD; 6.Nf3
*D56 QGD; Lasker defence
*D57 QGD; Lasker defence, Main line
*D58 QGD; Tartakower (Makagonov-Bondarevsky) system
*D59 QGD; Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd5
*D60 QGD; Orthodox defence
*D61 QGD; Orthodox defence, Rubinstein variation
*D62 QGD; Orthodox defence, 7.Qc2 c5, 8.cd (Rubinstein)
*D63 QGD; Orthodox defence, 7.Rc1
*D64 QGD; Orthodox defence, Rubinstein attack (with Rc1)
*D65 QGD; Orthodox defence, Rubinstein attack, Main line
*D66 QGD; Orthodox defence, Bd3 line includingRubinstein Trap
*D67 QGD; Orthodox defence, Bd3 line, Capablanca freeing manoeuver
*D68 QGD; Orthodox defence, Classical variation
*D69 QGD; Orthodox defence, Classical, 13.dxe5D70-D99
1.d4 Nf6 2.c4 g6 with 3...d5:
Grünfeld Defence (D70-D99)
*D70 Neo-Grünfeld Defence
*D71 Neo-Grünfeld, 5.cd
*D72 Neo-Grünfeld, 5.cd, Main line
*D73 Neo-Grünfeld, 5.Nf3
*D74 Neo-Grünfeld, 6.cd Nxd5, 7.O-O
*D75 Neo-Grünfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc3
*D76 Neo-Grünfeld, 6.cd Nxd5, 7.O-O Nb6
*D77 Neo-Grünfeld, 6.O-O
*D78 Neo-Grünfeld, 6.O-O c6
*D79 Neo-Grünfeld, 6.O-O, Main line
*D80Grünfeld Defence
*D81 Grünfeld; Russian variation
*D82 Grünfeld 4.Bf4
*D83 Grünfeld gambit
*D84 Grünfeld gambit accepted
*D85 Grünfeld, exchange variation, Nadanian Variation
*D86 Grünfeld, Exchange, Classical variation
*D87 Grünfeld, Exchange, Spassky variation
*D88 Grünfeld, Spassky variation, Main line, 10...cd, 11.cd
*D89 Grünfeld, Spassky variation, Main line, 13.Bd3
*D90 Grünfeld, Three knights variation
*D91 Grünfeld, Three knights variation
*D92 Grünfeld, 5.Bf4
*D93 Grünfeld with 5.Bf4 O-O 6.e3
*D94 Grünfeld, 5.e3
*D95 Grünfeld with 5.e3 O-O 6.Qb3
*D96 Grünfeld, Russian variation
*D97 Grünfeld, Russian variation with 7.e4
*D98 Grünfeld, Russian, Smyslov variation
*D99 Grünfeld Defence, Smyslov, Main lineE
E00-E59
1.d4 Nf6 2.c4 e6: Indian systems with ...e6 (E00-E59)
*E00Queen's Pawn Game (includingNeo-Indian Attack ,Trompowski Attack ,Catalan Opening and others)
*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
*E11Bogo-Indian Defence
*E12Queen's Indian Defence
*E13 Queen's Indian, 4.Nc3, Main line
*E14 Queen's Indian, 4.e3
*E15Queen'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
*E20Nimzo-Indian Defence
*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 lineE60-E99
1.d4 Nf6 2.c4 g6 without 3...d5: Indian systems with ...g6 (except Grünfeld) (E60-E99)
*E60King's Indian Defence
*E61 King's Indian Defence, 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
*E76King's Indian Defence, 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, Sämisch variation
*E81 King's Indian, Sämisch, 5...O-O
*E82 King's Indian, Sämisch, double Fianchetto variation
*E83 King's Indian, Sämisch, 6...Nc6
*E84 King's Indian, Sämisch, Panno Main line
*E85 King's Indian, Sämisch, Orthodox variation
*E86 King's Indian, Sämisch, Orthodox, 7.Nge2 c6
*E87 King's Indian, Sämisch, Orthodox, 7.d5
*E88 King's Indian, Sämisch, Orthodox, 7.d5 c6
*E89 King's Indian, Sämisch, 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, Mainee also
*
Chess
*Chess opening s
*Encyclopaedia of Chess Openings
*Chess Informant
*Chess opening theory table External links
* [http://www.sahovski.com/other/index.php?other=5 Chess Informant official website]
* [http://www.geocities.com/siliconvalley/lab/7378/eco.htm Bill Wall's list of opening variations]
* [http://chess.about.com/gi/dynamic/offsite.htm?zi=1/XJ/Ya&sdn=chess&cdn=hobbies&tm=22&gps=109_9_796_455&f=10&su=p445.92.150.ip_&tt=14&bt=0&bts=0&zu=http%3A//www.chessarch.com/library/0000_eco/index.shtml About.com : ECO codes]
* [http://www.csm.astate.edu/~wpaulsen/chess/index.htm Arkansas State University : list of openings with board]
* [http://www.markalowery.net/Chess/ECO-List/ECO_Index_Information.html ECO Information and Index]
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