1. c2c4  1... e7e5  2. g2g3  2... g8f6  3. f1g2  3... f8c5 So revealed that he was somewhat surprised  by this opening choice by Caruana. 4. d2d3  4... c7c6  5. g1f3  5... d7d6  6. e1g1  6... e8g8  7. b1c3  7... a7a5  8. d3d4  8... e5d4  9. f3d4  9... a5a4 Since the  knight on d4 is loose, this is perfectly possible. Caruana is trying to  obstruct the comfortable development of the opponent's dark-squared bishop and in the meantime gains more space for his pieces on the queenside. 10. a1b1 \"I do not think that White is better in this opening, but it is  very hard to get a sizeable advantage in the opening nowadays.\" (So) 10... f8e8 A flexible and good move. Caruana keeps his queenside bishop  opened. 11. e2e3 So defends his knight and now threatens to capture the pawn. The  drawback of the move is that his queenside bishop is now deprived of the  c1-g5 diagonal. 11... d8a5 An aggressive defense. Qa5-b4 is on the agenda. 12. c1d2  12... c8g4  13. f2f3 \"Probably this is not so good.\" (So) It might not be ideal from computer perspective indeed, but from a human standpoint the  idea is brilliant. White is ready to sacrifice a pawn, in order to lock  the opponent's pieces for long. 13... g4h5  14. c3e4  14... a5d8  15. e4c5  15... d6c5  16. d4e2 So is ready to challenge the enemy bishop. 16... d8d3 The best way to obstruct the enemy plan, based on tactics.  17. e2f4  17... d3c4  18. b2b3  18... a4b3  19. a2b3  19... c4b5  20. e3e4  20... h5g6  21. d2c3  21... b8a6 \"After this I was quite confident with my chances as the Bc3 is a monster, and the Bg6 and Nf6 are quite passive.\" (So) 22. h2h4  22... h7h5 Now Caruana will be deprived of any counterplay. 23. d1c1 A brilliant move and a great concept! So is ready to swap both his most active pieces for the horrible black ones, but to mate the enemy  king! 23... g8h7  24. f1d1 Another great move. 24... a8d8  25. c1b2 That is it. Black cannot defend his kingside. 25... c5c4 The  last try, Caruana needs to swap the queens at any cost. But that loses a  couple of pawns. 26. c3f6  26... g7f6  27. b2f6  27... d8d1  28. b1d1  28... b5c5  29. g1h2  29... c5e7  30. f6e7 