Code ECO A28 – English Opening
Coups: 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4
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A28 - 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. a3 - English Opening: King's English Variation, Four Knights Variation, Korchnoi Line (1)
English Opening: King's English Variation, Four Knights Variation, Korchnoi Line Coups: 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. a3 -
A28 - 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d3 - English Opening: King's English Variation, Four Knights Variation, Flexible Line (1)
English Opening: King's English Variation, Four Knights Variation, Flexible Line (A28) Coups: 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d3 -
A28 - 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 - English Opening: King's English Variation, Four Knights Variation, Quiet Line (3)
English Opening: King's English Variation, Four Knights Variation, Quiet Line (A28) Coups: 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 -
English (1)
English (A28)