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 