1. d2d4  1... g8f6  2. c2c4  2... g7g6  3. h2h4 "Just an interesting line for White" (Grischuk).  3... c7c5 "The most principled line" (MVL) 4. d4d5  4... b7b5  5. c4b5  5... a7a6  6. e2e3  6... f8g7  7. b1c3  7... e8g8  8. g1f3  8... d7d6  9. a2a4  9... c8g4 "This cannot be so bad for me  as the bishop is quite annoying" (MVL). This is the main reason why Black  chose to switch to the Benko gambit. 10. a1a3 "Unexpected, but probably  good" (MVL). 10... a6b5  11. f1b5  11... b8a6  12. e3e4  12... a6b4  13. b5e2  13... f6d7  14. e1g1  14... d8b6  15. f1e1 "Quite a stupid move" (Grischuk). 15... b6b7 A typical Benko position arose. Black has compensation for  the pawn, thanks to his active pieces, and is ready to open the play on  the kingside with f7-f5. 16. c1g5  16... g4f3  17. g2f3 A suprise for Black. 17... d7e5  18. e1f1  18... c5c4  19. b2b3 Missed by Black but he now plays simply brilliantly: 19... f8c8  20. g5d2  20... b4d3  21. f3f4  21... b7b4  22. c3b1  22... c4c3  23. f4e5  23... d3b2 Fantastic concept. Black should have foreseen  this and the remaining well in advance. This was missed by Grischuk, who  thought he is winning at this stage of the game. 24. d1c2  24... c3d2  25. c2b2  25... b4e4 