1. g1f3  1... d7d5  2. e2e3  2... c7c5  3. b2b3 A very popular line in blitz. 3... b8c6  4. f1b5  4... c8d7  5. c1b2  5... e7e6  6. c2c4  6... g8e7  7. c4d5  7... e7d5  8. e1g1  8... a7a6  9. b5e2 [#] 9... f7f6 An  ambitious novelty. Caruana defends the pawn and wants to complete the  development in the most optimal way, putting the dark-squared bishop on  the b8-h2 diagonal. 10. d2d4 The most ambitious strike. So needs to build his initiative  while his opponent has has the king in the center. 10... f8e7  11. e3e4 Consistent, but it transpires that Black has enough  tactical resources here. 11... d5f4  12. d4d5  12... c6d4 That is the point. White has problem with his  Be2. 13. f3d4  13... c5d4  14. d5e6  14... d7e6  15. e2f3  15... e7c5 Caruana establishes central superiority; it is  So who is somewhat lagging in development now. 16. g2g3 Once more  ambitious, but very risky. 16... f4h3  17. g1h1 White thought that he would have enough time for the f2-f4 advance, but this is not the case! 17... e8g8  18. f3g2  18... d8d7  19. f2f4 Well, he did it. But what about the queenside? 19... e6g4  20. d1d3  20... d7b5 Removes the blockader and White's only active piece. 21. d3d2  21... c5b4 Very consistent, instructive play by Caruana. The queen  has nowhere to hide. 22. d2d4  22... f8d8  23. d4c4  23... b5c4  24. b3c4  24... a8c8 