1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. b1c3  3... g8f6  4. f1b5  4... f8d6 A fighting move. Caruana avoids the many theoritecial drawish lines. 5. d2d3  5... e8g8  6. e1g1  6... h7h6  7. g1h1 Preparing a quick f2-f4 in the spirit of the Rossolimo line. 7... f8e8 Black wants to retreat the bishop to f8 once that his center  is defended. 8. b5c6  8... b7c6 Another fighting move. 9. f3g1  9... d6f8  10. f2f4  10... e5f4  11. c1f4  11... d7d5 This is why Caruana recaptured with the c-pawn. He wants a piece of the center. At this stage of the game the  American GM skillfully outplays his opponent. 12. e4e5 