1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... a7a6  4. b5a4  4... g8f6  5. e1g1  5... f6e4  6. d2d4  6... b7b5  7. a4b3  7... d7d5 The Open Ruy Lopez has been the favorite weapon of Korchnoi and Mamedyarov, but many other top players have also given it a try lately. 8. d4e5  8... c8e6  9. b1d2  9... f8e7  10. c2c3  10... e8g8  11. b3c2 