| This list is a slightly shortened version of the Wikipedia list of ECO codes | |
| A00 | Irregular Openings |
| A01 | Larsen's Opening, 1. b3 |
| A02 | Bird's Opening, 1. f4 |
| A03 | Bird's Opening, 1...d5 |
| A04 | Réti 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 |
| 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 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 d4 |
| A40 | Queen's Pawn Game (including English Defence, Englund Gambit, Queen's Knight Defence, Polish Defence and Keres Defence) |
| A41 | Queen's Pawn Game, Wade Defence |
| A42 | Modern defence, Averbakh system also Wade Defence |
| A43 | Old Benoni defence |
| A44 | Old Benoni defence |
| A45 | Queen's Pawn Game |
| A46 | Queen's Pawn Game |
| A47 | Queen's Indian Defence |
| A48 | King's Indian, East Indian defence |
| A49 | King's Indian, Fianchetto without c4 |
| A50 | Queen's Pawn Game, Black Knights' Tango |
| A51 | Budapest Gambit declined |
| A52 | Budapest Gambit |
| A53 | Old Indian Defence |
| A54 | Old Indian, Ukrainian variation |
| A55 | Old Indian, Main line |
| A56 | Benoni Defence |
| A57 | Benko gambit |
| A58 | Benko gambit accepted |
| A59 | Benko 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 |
| 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 Defence |
| A81 | Dutch Defence |
| A82 | Dutch, Staunton gambit, also includes Balogh 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 b3 |
| B00 | King's pawn Opening without 1... e5, 1... d5, 1... Nf6, 1... g6, 1... d6, 1... c6, 1... c5. |
| B01 | Scandinavian Defence (Center Counter Defence) |
| B02 | Alekhine'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, including Monkey's Bum |
| B07 | Pirc defence |
| B08 | Pirc, Classical (Two knights) system |
| B09 | Pirc, Austrian attack |
| B10 | Caro-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...Nd7 |
| B20 | Sicilian defence |
| B21 | Sicilian, Grand Prix attack and Smith-Morra Gambit, including the Siberian Trap |
| B22 | Sicilian 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 |
| B34 | Sicilian Defence, Accelerated Fianchetto, Exchange variation |
| B35 | Sicilian Defence, Accelerated Fianchetto, Modern variation with Bc4 |
| B36 | Sicilian Defence, Accelerated Fianchetto, Maroczy bind |
| B37 | Sicilian Defence, Accelerated Fianchetto, Maroczy bind, 5...Bg7 |
| B38 | Sicilian Defence, Accelerated Fianchetto, Maroczy bind, 6.Be3 |
| B39 | Sicilian 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 |
| B47 | Sicilian, 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) including Magnus Smith Trap |
| 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 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 |
| 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 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 |
| B89 | Sicilian, 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 including Poisoned Pawn Variation |
| B98 | Sicilian, Najdorf, 7...Be7 |
| B99 | Sicilian, Najdorf, 7...Be7 Main line |
| C00 | French 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 |
| C18 | French, Winawer, Advance Variation |
| C19 | French, Winawer, Advance, 6...Ne7 |
| C20 | King's Pawn Game (includes Alapin's Opening, Lopez Opening, Napoleon Opening, Portuguese Opening and Parham Attack) |
| C21 | Center Game (includes Danish Gambit) |
| C22 | Center Game |
| C23 | Bishop's Opening |
| C24 | Bishop's Opening, Berlin Defence |
| C25 | Vienna Game |
| C26 | Vienna Game, Falkbeer Variation |
| C27 | Vienna Game, Frankenstein-Dracula Variation |
| C28 | Vienna Game |
| C29 | Vienna Gambit, Kaufmann Variation including Würzburger Trap |
| C30 | King'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, including Fischer 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 |
| C39 | KGA, Allagier & Kiesertisky Gambits including Rice Gambit |
| C40 | King's Knight Opening (includes Gunderam Defence, Greco Defence, Damiano Defence, Elephant Gambit, and Latvian Gambit.) |
| C41 | Philidor Defence |
| C42 | Petrov's Defence, including Marshall Trap |
| C43 | Petrov's Defence, Modern (Steinitz) Attack |
| C44 | King's Pawn Game (includes Ponziani Opening, Inverted Hungarian Opening, Irish Gambit, Konstantinopolsky Opening and some Scotch Game) |
| C45 | Scotch Game |
| C46 | Three Knights Game including Müller-Schulze Gambit or Halloween Attack |
| C47 | Four Knights Game, Scotch Variation |
| C48 | Four Knights Game, Spanish Variation |
| C49 | Four Knights Game, Double Ruy Lopez |
| C50 | King's Pawn Game (includes Blackburne Shilling Gambit, Hungarian Defence, Italian Gambit, Légal Trap, Rousseau Gambit and Giuoco Pianissimo) |
| C51 | Evans Gambit |
| C52 | Evans Gambit with 4...Bxb4 5.c3 Ba5 |
| C53 | Giuoco Piano |
| C54 | Giuoco Piano |
| C55 | Two Knights Defence |
| C56 | Two Knights Defence |
| C57 | Two Knights Defence, including the Fried Liver Attack |
| C58 | Two Knights Defence |
| C59 | Two Knights Defence |
| C60 | Ruy Lopez |
| C61 | Ruy Lopez, Bird's Defence |
| C62 | Ruy Lopez, Old Steinitz Defence |
| C63 | Ruy Lopez, Schliemann Defence |
| C64 | Ruy Lopez, Classical (Cordel) Defence |
| C65 | Ruy Lopez, Berlin Defence including Mortimer Trap |
| 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 Defence including Noah'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 |
| C77 | Ruy Lopez, Morphy Defence |
| C78 | Ruy Lopez, 5.O-O |
| C79 | Ruy Lopez, Steinitz Defence 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 Defence |
| C85 | Ruy Lopez, Exchange Variation Doubly Deferred (DERLD) |
| C86 | Ruy Lopez, Worrall Attack |
| C87 | Ruy Lopez, Closed, Averbach Variation |
| C88 | Ruy Lopez, Closed |
| C89 | Ruy Lopez, Marshall Counterattack |
| C90 | Ruy Lopez, Closed (with ...d6) |
| C91 | Ruy Lopez, Closed, 9.d4 |
| C92 | Ruy Lopez, Closed, 9.h3 |
| C93 | Ruy Lopez, Closed, Smyslov Defence |
| C94 | Ruy Lopez, Closed, Breyer Defence |
| C95 | Ruy Lopez, Closed, Breyer, 10.d4 |
| C96 | Ruy Lopez, Closed, 8...Na5 |
| C97 | Ruy Lopez, Closed, Chigorin Defence |
| C98 | Ruy Lopez, Closed, Chigorin, 12...Nc6 |
| C99 | Ruy Lopez, Closed, Chigorin, 12...c5d4 |
| D00 | Queen's Pawn Game (including Blackmar-Diemer Gambit, Halosar Trap and others) |
| 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 (including Colle system) |
| D06 | Queen's Gambit (including the Baltic Defence, Marshall Defence and Symmetrical Defence) |
| D07 | QGD; Chigorin defence |
| D08 | QGD; Albin Countergambit and Lasker 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 |
| D15 | QGD; Slav, 4.Nc3 |
| D16 | QGD; Slav accepted, Alapin variation |
| D17 | QGD; Slav defence, Czech defence |
| D18 | QGD; Dutch variation |
| D19 | QGD; Dutch variation |
| D20 | Queen'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 |
| D30 | Queen'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 |
| D44 | QGD; 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 and Elephant 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 including Rubinstein Trap |
| D67 | QGD; Orthodox defence, Bd3 line, Capablanca freeing manoeuver |
| D68 | QGD; Orthodox defence, Classical variation |
| D69 | QGD; Orthodox defence, Classical, 13.dxe5 |
| 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 |
| D80 | Grünfeld 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 line |
| E00 | Queen's Pawn Game (including Neo-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 |
| E11 | Bogo-Indian Defence |
| E12 | Queen's Indian Defence |
| 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 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 line |
| E60 | King'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, Makogonov 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 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, Main |