ECO Codes

The ECO Codes is a classification system for the chess openings moves. Below is a list of chess openings organized by the Encyclopaedia of Chess Openings (ECO) code. The openings are divided in five volumes labeled from "A" through "E".

B02 Alekhine's defence

1. e4 Nf6
- B02 Alekhine's defence, Scandinavian variation
  1. e4 Nf6 2. Nc3 d5
- B02 Alekhine's defence, Spielmann variation
  1. e4 Nf6 2. Nc3 d5 3. e5 Nfd7 4. e6
- B02 Alekhine's defence, Maroczy variation
  1. e4 Nf6 2. d3
- B02 Alekhine's defence, Krejcik variation
  1. e4 Nf6 2. Bc4
- B02 Alekhine's defence, Mokele Mbembe (Buecker) variation
  1. e4 Nf6 2. e5 Ne4
- B02 Alekhine's defence, Brooklyn defence
  1. e4 Nf6 2. e5 Ng8
- B02 Alekhine's defence
  1. e4 Nf6 2. e5 Nd5
- B02 Alekhine's defence, Kmoch variation
  1. e4 Nf6 2. e5 Nd5 3. Bc4 Nb6 4. Bb3 c5 5. d3
- B02 Alekhine's defence, Saemisch attack
  1. e4 Nf6 2. e5 Nd5 3. Nc3
- B02 Alekhine's defence, Welling variation
  1. e4 Nf6 2. e5 Nd5 3. b3
- B02 Alekhine's defence
  1. e4 Nf6 2. e5 Nd5 3. c4
- B02 Alekhine's defence, Steiner variation
  1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. b3
- B02 Alekhine's defence, two pawns' (Lasker's) attack
  1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. c5
- B02 Alekhine's defence, two pawns' attack, Mikenas variation
  1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. c5 Nd5 5. Bc4 e6 6. Nc3 d6
B03 Alekhine's defence

1. e4 Nf6 2. e5 Nd5 3. d4
- B03 Alekhine's defence, O'Sullivan gambit
  1. e4 Nf6 2. e5 Nd5 3. d4 b5
- B03 Alekhine's defence
  1. e4 Nf6 2. e5 Nd5 3. d4 d6
- B03 Alekhine's defence, Balogh variation
  1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Bc4
- B03 Alekhine's defence
  1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4
- B03 Alekhine's defence, exchange variation
  1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6
- B03 Alekhine's defence, exchange, Karpov variation
  1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 cxd6 6. Nf3 g6 7. Be2 Bg7 8. O-O O-O 9. h3 Nc6 10. Nc3 Bf5 11. Bf4
- B03 Alekhine's defence, four pawns attack
  1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4
- B03 Alekhine's defence, four pawns attack, Korchnoi variation
  1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 dxe5 6. fxe5 Bf5 7. Nc3 e6 8. Nf3 Be7 9. Be2 O-O 10. O-O f6
- B03 Alekhine's defence, four pawns attack, 6...Nc6
  1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 dxe5 6. fxe5 Nc6
- B03 Alekhine's defence, four pawns attack, Ilyin-Genevsky var.
  1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 dxe5 6. fxe5 Nc6 7. Nf3 Bg4 8. e6 fxe6 9. c5
- B03 Alekhine's defence, four pawns attack, 7.Be3
  1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 dxe5 6. fxe5 Nc6 7. Be3
- B03 Alekhine's defence, four pawns attack, Tartakower variation
  1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 dxe5 6. fxe5 Nc6 7. Be3 Bf5 8. Nc3 e6 9. Nf3 Qd7 10. Be2 O-O-O 11. O-O Be7
- B03 Alekhine's defence, four pawns attack, Planinc variation
  1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 g5
- B03 Alekhine's defence, four pawns attack, fianchetto variation
  1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 g6
- B03 Alekhine's defence, four pawns attack, Trifunovic variation
  1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 Bf5
B04 Alekhine's defence, modern variation

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3
- B04 Alekhine's defence, modern, Larsen variation
  1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 dxe5
- B04 Alekhine's defence, modern, Schmid variation
  1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Nb6
- B04 Alekhine's defence, modern, fianchetto variation
  1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 g6
- B04 Alekhine's defence, modern, Keres variation
  1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 g6 5. Bc4 Nb6 6. Bb3 Bg7 7. a4
B05 Alekhine's defence, modern variation, 4...Bg4

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4
- B05 Alekhine's defence, modern, Flohr variation
  1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 c6
- B05 Alekhine's defence, modern, Panov variation
  1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. h3
- B05 Alekhine's defence, modern, Alekhine variation
  1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. c4
- B05 Alekhine's defence, modern, Vitolins attack
  1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. c4 Nb6 6. d5

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