Move

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 O-O 7. Bd3 Nbd7 8. Nge2 c6 9. Qc2 Re8 10. O-O Nf8 11. f3 Be6 12. Rad1 Qa5
    This move is tricky (Black sets a trap - 13 Bh4? Ng4!), but not really good.
13. a3! Rac8?!
   After the game Ziatdinov recommended 13...Ne4 and I considered that move too. However, we both missed 14 b4!, with advantage to White.
14. Kh1 a6 15. b4 Qc7
    Of course, Black could not play 15...Qxa3?? in view of 16 Rb1, winning.
16. Na4 Nh5 17. Bxe7 Rxe7 18. Nc5 Rce8 19. e4 dxe4 20. fxe4 Bc8?!
   During the game I felt that 20...Bg4 would be more testing. Yet, after 21 e5 f6 White has several ways to prove his advantage: 22 h3! Bxe2 23 Qb3+ Kh8 24 Bxe2 g6 25 Bxh5 gxh5 26 Rxf6+- or 22 Qc4+! Kh8 23 d5+-.
21. e5 f6 22. Bc4+ Kh8 23. Ne4!
   Up to this move Black played very quickly, spending maybe 10 minutes or so on previous moves. But on the next few moves Ziatdinov spent more than an hour.
fxe5?!
    Better was to play 24...Qxe5 25 Nd6 Nf6 26 Nxe8 Rxe8.
24. dxe5 Ng6 25. Ng5! Qxe5 26. Nf7+ Rxf7 27. Bxf7 1-0