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.