csmath: Original play by Kramnik as well, what started as peaceful Symmetrical English turned into rather aggressive Neo-Grunfeld game due to Kramnik's kingside attack.
Position after 10 moves is known in a different order of moves but without knight on a6. So technically
is a new move. I am glad Kramnik plays this move as I always had dilema of playing this in similar positions.
[Risky but proper decision. Kramnik probably decided to play aggressive game and correctly disregards the pin on d5. The alternative was caotious 11. ...Bd7 but here white would still play 12. Bg5. Kramnik rejects the idea of playing passive.]
[The only sensible move. Queen has no good square as Qc7 would be practically a suicide due to pin on knight on d5.]
12. Nxd5! exd5
13. Nc3 Be6
[White is expoiting pin/fork on d5 but without particular gain.]
15. e4 Rad8
[Very nice positional play by both in particular by Kramnik.]
[Kramnik is in no mood for defence!]
[21. Nxc5! bxc5, 22. Qe4 Bxa2 (22. ...dxe2?!, 23. Qxe2 Bg4, 24. Qa6 and with better pawn structure white is better), 23. Qxd3 Qxd3, 24. exd3 Rxd3, 24. Be3 probably with a draw.]
[Natural but 22....f5, 23. Bc6 Qf7 seems more assertive given the intentions of black in the sequel.]
[Very risky but consistent with previous play.]
27. Qa3 b5
28. Rb4 Qe2!
29. Qxa2 Bc3
30. Rxb5 Qxd2
31. Qxd2 Bxd2
32. Rd1 Be3!!
seems more testy but I believe here black has enough resources for a draw.]
[Vitiugov decides on active play. 33. Rf1 surely looks unattractively passive.
What follows is a tactical sequence correctly played by both that ends in a draw.]
Brilliantly played game by both players. This is exceptionally good chess.