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".

C25 Vienna game

1. e4 e5 2. Nc3
- C25 Vienna, Zhuravlev countergambit
  1. e4 e5 2. Nc3 Bb4 3. Qg4 Nf6
- C25 Vienna game, Max Lange defence
  1. e4 e5 2. Nc3 Nc6
- C25 Vienna, Paulsen variation
  1. e4 e5 2. Nc3 Nc6 3. g3
- C25 Vienna, Fyfe gambit
  1. e4 e5 2. Nc3 Nc6 3. d4
- C25 Vienna gambit
  1. e4 e5 2. Nc3 Nc6 3. f4
- C25 Vienna, Steinitz gambit
  1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. d4
- C25 Vienna, Steinitz gambit, Zukertort defence
  1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. d4 Qh4+ 5. Ke2 d5
- C25 Vienna, Steinitz gambit, Fraser-Minckwitz variation
  1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. d4 Qh4+ 5. Ke2 b6
- C25 Vienna gambit
  1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. Nf3
- C25 Vienna, Hamppe-Allgaier gambit
  1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. Nf3 g5 5. h4 g4 6. Ng5
- C25 Vienna, Hamppe-Allgaier gambit, Alapin variation
  1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. Nf3 g5 5. h4 g4 6. Ng5 d6
- C25 Vienna, Hamppe-Muzio gambit
  1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. Nf3 g5 5. Bc4 g4 6. O-O
- C25 Vienna, Hamppe-Muzio, Dubois variation
  1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. Nf3 g5 5. Bc4 g4 6. O-O gxf3 7. Qxf3 Ne5 8. Qxf4 Qf6
- C25 Vienna, Pierce gambit
  1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. Nf3 g5 5. d4
- C25 Vienna, Pierce gambit, Rushmere attack
  1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. Nf3 g5 5. d4 g4 6. Bc4 gxf3 7. O-O d5 8. exd5 Bg4 9. dxc6
C26 Vienna, Falkbeer variation

1. e4 e5 2. Nc3 Nf6
- C26 Vienna, Mengarini variation
  1. e4 e5 2. Nc3 Nf6 3. a3
- C26 Vienna, Paulsen-Mieses variation
  1. e4 e5 2. Nc3 Nf6 3. g3
- C26 Vienna game
  1. e4 e5 2. Nc3 Nf6 3. Bc4
C27 Vienna game

1. e4 e5 2. Nc3 Nf6 3. Bc4 Nxe4
- C27 Vienna, `Frankenstein-Dracula' variation
  1. e4 e5 2. Nc3 Nf6 3. Bc4 Nxe4 4. Qh5 Nd6 5. Bb3 Nc6 6. Nb5 g6 7. Qf3 f5 8. Qd5 Qe7 9. Nxc7+ Kd8 10. Nxa8 b6
- C27 Vienna, Adams' gambit
  1. e4 e5 2. Nc3 Nf6 3. Bc4 Nxe4 4. Qh5 Nd6 5. Bb3 Nc6 6. d4
- C27 Vienna game
  1. e4 e5 2. Nc3 Nf6 3. Bc4 Nxe4 4. Qh5 Nd6 5. Bb3 Be7
- C27 Vienna, Alekhine variation
  1. e4 e5 2. Nc3 Nf6 3. Bc4 Nxe4 4. Qh5 Nd6 5. Bb3 Be7 6. Nf3 Nc6 7. Nxe5
- C27 Boden-Kieseritsky gambit
  1. e4 e5 2. Nc3 Nf6 3. Bc4 Nxe4 4. Nf3
- C27 Boden-Kieseritsky gambit, Lichtenhein defence
  1. e4 e5 2. Nc3 Nf6 3. Bc4 Nxe4 4. Nf3 d5
C28 Vienna game

1. e4 e5 2. Nc3 Nf6 3. Bc4 Nc6
C29 Vienna gambit

1. e4 e5 2. Nc3 Nf6 3. f4 d5
- C29 Vienna gambit, Kaufmann variation
  1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Nf3 Bg4 6. Qe2
- C29 Vienna gambit, Breyer variation
  1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Nf3 Be7
- C29 Vienna gambit, Paulsen attack
  1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Qf3
- C29 Vienna gambit, Bardeleben variation
  1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Qf3 f5
- C29 Vienna gambit, Heyde variation
  1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Qf3 f5 6. d4
- C29 Vienna gambit
  1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. d3
- C29 Vienna gambit, Wurzburger trap
  1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. d3 Qh4+ 6. g3 Nxg3 7. Nf3 Qh5 8. Nxd5
- C29 Vienna gambit, Steinitz variation
  1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. d3

ECO Codes

Search by ECO Code

Search opening by name