1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... a7a6  4. b5a4  4... g8f6  5. e1g1  5... f6e4 The Open Variation is one of Black's best choices in the Ruy Lopez. 6. d2d4  6... b7b5  7. a4b3  7... d7d5  8. d4e5 