A23: English Opening

• English Opening: King's English Variation, Two Knights Variation, Keres Variation
  1. c4 e5 2. Nc3 Nf6 3. g3 c6
• English Opening: King's English Variation, Two Knights Variation, Keres Variation
  1. c4 e5 2. Nc3 Nf6 3. g3 Bc5 4. Bg2 c6