1. d2d4  1... d7d5  2. c2c4  2... c7c6  3. g1f3  3... g8f6  4. e2e3  4... e7e6  5. f1d3  5... b8d7  6. b2b3  6... b7b6  7. e1g1  7... c8b7  8. c1b2  8... d5c4  9. b3c4  9... c6c5  10. d4d5 Grischuk has done his  homework well. With his move he uncorked a strong novelty that immediately led to a large advantage for White. 10... e6d5 Duda accepts the sacrifice and hopes to repel the fierce  attack. 11. c4d5  11... b7d5  12. e3e4  12... d5c6  13. f1e1 Grischuk is not in a rush and is preparing the central break. 13... d8e7 Duda hurries to evacuate the king from the center, and both  the Nc3-d5 and e4-e5-e6 threats are too strong to cope with. 14. b1c3  14... e8c8  15. c3d5  15... e7e8  16. a2a4  16... f8d6  17. d3a6  17... c8b8  18. d1b3 Once again Grischuk is patiently  preparing his attack. He clearly understands that the open files cannot be locked. 18... f6e4  19. a4a5 Obvious and consistent, but this allowed Black a  chance. 19... d6c7 After this obvious move, the attack runs by itself. 20. a5b6  20... a7b6  21. a6b5  21... c6b7  22. b3a4 All the files against the black king  are open. Grischuk starts to search for decisive combinational blows. 22... e8e6  23. b5c6 Here it is! The decisive reinforcement. The threat is Qa4-a8 with mate in two. Duda needs to react. 23... c7h2 He  does it in the best possible way, freeing air for the king. 24. f3h2  24... e6c6  25. a4a7 