| A10 |
1. c4 |
English opening |
|
|
| A11-A12 |
1. c4 c6 |
English, Caro-Kann defensive system |
|
|
| A13 |
1. c4 e6 |
English opening |
|
|
| A14 |
1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. O-O |
English, Neo-Catalan declined |
|
|
| A15 |
1. c4 Nf6 |
English, 1...Nf6 (Anglo-Indian defense) |
|
|
| A16 |
1. c4 Nf6 2. Nc3 |
English opening |
|
|
| A17 |
1. c4 Nf6 2. Nc3 e6 |
English opening |
|
|
| A18-A19 |
1. c4 Nf6 2. Nc3 e6 3. e4 |
English, Mikenas-Carls variation |
|
|
| A20 |
1. c4 e5 |
English opening |
|
|
| A21 |
1. c4 e5 2. Nc3 |
English opening |
|
|
| A22 |
1. c4 e5 2. Nc3 Nf6 |
English opening |
|
|
| A23-A24 |
1. c4 e5 2. Nc3 Nf6 3. g3 c6 |
English, Bremen system |
|
|
| A25 |
1. c4 e5 2. Nc3 Nc6 |
English, Sicilian reversed |
|
|
| A26 |
1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 |
English, closed system |
|
|
| A27 |
1. c4 e5 2. Nc3 Nc6 3. Nf3 |
English, three knights system |
|
|
| A28-A29 |
1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 |
English, four knights system |
|
|
| A30-A39 |
1. c4 c5 |
English, symmetrical variation |
|
|
