A28 — English Opening: King's English Variation, Four Knights Variation

ECO A28 covers English Opening: King's English Variation, Four Knights Variation and related lines (English Opening: King's English Variation, Four Knights Variation, English Opening: Four Knights System, Nimzowitsch Variation, English Opening: King's English Variation, Four Knights Variation, Flexible Line, English Opening: King's English Variation, Four Knights Variation, Korchnoi Line). Main line 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 with variations, statistics, and the best responses.