[Event "Nakamura-Ponomariov Match (Rapid)"]
[Site "St Louis, MO USA"]
[Date "2011.05.25"]
[EventDate "2011.05.24"]
[Round "4"]
[Result "1/2-1/2"]
[White "Hikaru Nakamura"]
[Black "Ruslan Ponomariov"]
[ECO "E60"]
[WhiteElo "2774"]
[BlackElo "2754"]
[PlyCount "77"]

1. d4 Nf6 2. c4 g6 3. g3 c5 4. d5 b5 5. cxb5 a6 6. bxa6 Bg7
7. Bg2 d6 8. Nc3 O-O 9. Nf3 Nxa6 10. O-O Bf5 11. Re1 Ne4
12. Nxe4 Bxe4 13. Nd2 Bxg2 14. Kxg2 Qa5 15. e4 Nb4 16. a3 Nd3
17. Re3 Qa6 18. Qc2 Nb4 19. Qd1 c4 20. Rb1 Nd3 21. Nxc4 Nxf2
22. Kxf2 Qxc4 23. b3 Qd4 24. Qd3 Rfc8 25. Kg2 Qb6 26. b4 Rc3
27. Qe2 Raxa3 28. Rxc3 Rxc3 29. b5 Qc5 30. Bd2 Rc2 31. b6 Qd4
32. b7 Rxd2 33. b8=Q+ Bf8 34. Qxd2 Qxd2+ 35. Kh3 Qe2 36. Qc8
h5 37. Rb8 Kh7 38. Qxf8 Qf1+ 39. Kh4 1/2-1/2