C68: Ruy Lopez, exchange variation

C68 Sub-variants:

• Ruy Lopez, exchange variation
  1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6
• Ruy Lopez, exchange, Alekhine variation
  1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. d4 exd4 6. Qxd4 Qxd4 7. Nxd4 Bd7
• Ruy Lopez, exchange, Keres variation
  1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. Nc3
• Ruy Lopez, exchange, Romanovsky variation
  1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. Nc3 f6 6. d3