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  12... c8g4  13. d1d2  13... f6h5  14. a1e1  14... a8b8 Sending the rook to the center! 15. h2h3  15... h5f4  16. d2f4  16... g4h5 In order to keep the bishop more active. 17. c3d1  17... b8b4  18. f4f2  18... c6c5  19. b2b3  19... b4b6  20. g1f3  20... b6e6  21. d1e3  21... d8d7 So far  Black did everything fine, but this last move is a mistake. For a moment  Caruana stalls and this gives McShane the needed time to create his own  play. 22. g2g4 McShane seizes his chance. 22... h5g6 