A16: English, Anglo-Gruenfeld defense, Korchnoi variation

A16 Sub-variants:

• English opening
  1. c4 Nf6 2. Nc3
• English, Anglo-Gruenfeld defense
  1. c4 Nf6 2. Nc3 d5
• English, Anglo-Gruenfeld, Smyslov defense
  1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. g3 g6 5. Bg2 Nxc3
• English, Anglo-Gruenfeld, Czech defense
  1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. g3 g6 5. Bg2 Nb6
• English, Anglo-Gruenfeld defense
  1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. Nf3
• English, Anglo-Gruenfeld defense, Korchnoi variation
  1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. Nf3 g6 5. g3 Bg7 6. Bg2 e5