A28 - 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4.... - English Opening

Code ECO A28 – English Opening

Coups: 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4

├── A28 - 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. a3 - English Opening: King's English Variation, Four Knights Variation, Korchnoi Line (1)
├── A28 - 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d3 - English Opening: King's English Variation, Four Knights Variation, Flexible Line (6)
└── A28 - 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 - English Opening: King's English Variation, Four Knights Variation, Quiet Line (12)
    ├── A28 - 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 g6 5. d4 exd4 - English Opening: King's English Variation, Four Knights Variation, Quiet Line (1)
    ├── A28 - 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4 - English Opening: Four Knights System, Nimzowitsch Variation (1)
    ├── A28 - 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 Bb4 5. Qc2 Bxc3 - English Opening: King's English Variation, Four Knights Variation, Quiet Line (8)
    ├── A28 - 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 Bb4 5. Qc2 O-O - English Opening: King's English Variation, Four Knights Variation, Quiet Line (1)
    └── A28 - 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e3 d6 5. d4 Bd7 - English Opening: King's English Variation, Four Knights Variation, Quiet Line (1)