1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. b1c3  4... f8b4  5. c4d5  5... e6d5  6. c1f4 A relatively  rare move. 6... e8g8  7. e2e3  7... c8f5  8. d1b3  8... b8c6  9. f4g5  9... a7a5  10. g5f6  10... d8f6  11. a2a3 The first  major thought by Black. 11... a5a4  12. b3d5  12... b4c3 And an important  novelty by the former world champion. 13. b2c3  13... c6a5 Caruana won an important central pawn, but is now heavily  lagging in development. Furthermore, his rook on a1 might get in trouble. 14. d5e5  14... f6c6  15. c3c4  15... a5b3  16. e5f5 After almost half an hour on the clock Caruana  decides to part with the troublesome rook. 16... b3a1  17. f1d3  17... g7g6  18. f5f4 In return for the exchange White managed  to weaken the enemy kingside and won a couple of tempos to castle. The  impressive white center also adds to the compensation. 18... a1b3  19. e1g1  19... c6d6 Anand decides to chase the queen to h6 anyway, albeit with  the loss of a tempo. 20. f4h6  20... d6f6  21. c4c5 The inclusion of the bishop is mandatory if White  wants to add momentum to his initiative. 21... b7b6 Black in return  needs open files for his rooks. 22. c5b6  22... c7b6  23. f3e5  23... f8c8  24. f2f4  24... c8c1 Swaps off the potential attacker. 25. f1c1  25... b3c1 