ECO A25
6 named openings and variations are classified as A25. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- English Opening: Closed, Taimanov VariationA251. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Rb1 Nh6 5. Bg2 Bg7
- English Opening: King's English Variation, Bremen-Hort VariationA251. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6
- English Opening: King's English Variation, Closed SystemA251. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3
- English Opening: King's English Variation, Hungarian AttackA251. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Rb1
- English Opening: King's English Variation, Reversed Closed SicilianA251. c4 e5 2. Nc3 Nc6
- English Opening: King's English Variation, Taimanov VariationA251. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7