1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... a7a6  4. b5a4  4... g8f6  5. e1g1  5... f6e4 Caruana prepared thoroughly and managed to surprise his opponent with a rare line in the Open Ruy Lopez. 6. d2d4  6... b7b5  7. a4b3  7... d7d5  8. d4e5  8... c8e6  9. c2c3  9... f8c5  10. b1d2  10... e8g8 