Ruy Lopez long reign as World Champion". The main replies for Black are 4...d6 and 4...Bc5. In both cases, White commonly plays 5. c3. An uncommon and dubious reply is 4...Ne7, which tries to set up the Mortimer Trap. The Berlin is assigned "ECO" codes C65–C67. Code C65 covers alternatives to 4.0-0 as well as 4.0-0 Bc5. Code C66 covers 4.0-0 d6, while C67 is 4.0-0 Nxe4. Less-common third moves for Black: Ruy Lopez The Ruy Lopez (; ), also called the Spanish Opening or Spanish Game, is a chess opening characterised by the moves: The Ruy Lopez is named after 16th-century
Ruy Lopez, Noah's Ark Trap and José Capablanca at the Budapest tournament in 1929: 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. d4 5... b5 6. Bb3 Nxd4 7. Nxd4 exd4 8. Qxd4?? 8... c5 9. Qd5 Be6 10. Qc6+ Bd7 11. Qd5 c4 (see diagram) A variation of this trap can occur in the Sicilian Defense after the moves 1.e4 c5 2.Nf3 Nc6 3.Bb5 (the Rossolimo Variation) a6 4.Ba4?? (4.Bxc6 is necessary and the point of 3.Bb5 itself) b5 5.Bb3 c4 (see diagram) and the bishop is similarly trapped. Bibliography Ruy Lopez, Noah's Ark Trap The Noah's Ark Trap