This is a list of chess openings, organised by the Encyclopaedia of Chess Openings (ECO) code. In 1966, Chess Informant categorised the chess openings 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 (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)
[edit] A00-A39
White first moves other than 1. e4, 1. d4:
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- A01 Larsen's Opening, 1. b3 (Owen's Opening) (Greek Attack)
- A02 Bird's Opening, 1. f4 (Dutch Attack)
- A03 Bird's Opening, 1...d5
- A04 Réti Opening, 1. Nf3
- A05 Réti Opening, 2...Nf6
- A06 Réti Opening, 2...d5
- A07 Réti Opening, King's Indian Attack (Barcza System)
- A08 Réti Opening, King's Indian Attack
- A09 Réti Opening, 2...d5 3.c4
- A10 English Opening: 1. c4
- 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
[edit] A40-A44
1. d4 without 1...d5 or 1...Nf6: Atypical replies to 1. d4 (A40-A44)
[edit] A45-A49
1. d4 Nf6 without 2.c4: Atypical replies to 1...Nf6 (A45-A49)
[edit] A50-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
- A51 Budapest Gambit declined
- A52 Budapest Gambit
- A53 Old Indian Defence (Chigorin 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 without early ...Nbd7
- 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
[edit] A80-A99
1. d4 f5: Dutch Defence (A80-A99)
- 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, Botvinnik 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
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B
- 1. e4 without 1...c5, 1...e6 or 1...e5 (B00-B19)
- 1. e4 c5: Sicilian Defence (B20-B99)
[edit] B00-B19
1. e4 without 1...c5, 1...e6 or 1...e5 (B00-B19)
- 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, Smyslov Systems
- B18 Caro-Kann, Classical Variation
- B19 Caro-Kann, Classical, 7...Nd7
[edit] B20-B99
1. e4 c5: Sicilian Defence (B20-B99)