A25: English, closed system
1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7
English, closed system
A25 Sub-variants:
- English, Sicilian reversed
1. c4 e5 2. Nc3 Nc6
- English, closed system
1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7
- English, closed, Taimanov variation
1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Nh6
- English, closed, Hort variation
1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6
- English, closed, 5.Rb1
1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Rb1
- English, closed, 5.Rb1 Taimanov variation
1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Rb1 Nh6
- English, closed system (without ...d6)
1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3