C71: Ruy Lopez, Noah's ark trap

C71 Sub-variants:

• Ruy Lopez, modern Steinitz defence
  1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6
• Ruy Lopez, Noah's ark trap
  1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. d4 b5 6. Bb3 Nxd4 7. Nxd4 exd4 8. Qxd4 c5
• Ruy Lopez, modern Steinitz defence, Three knights variation
  1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. Nc3
• Ruy Lopez, modern Steinitz defence, Duras (Keres) variation
  1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c4