E25: Nimzo-Indian, Saemisch variation

E25 Sub-variants:

• Nimzo-Indian, Saemisch variation
  1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5
• Nimzo-Indian, Saemisch, Keres variation
  1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 Nxd5 8. dxc5
• Nimzo-Indian, Saemisch, Romanovsky variation
  1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 Nxd5 8. dxc5 f5