[Event "ch-USA Quads"] [Site "Saint Louis USA"] [Date "2010.05.23"] [Round "2"] [White "Kamsky, Gata"] [Black "Onischuk, Alexander"] [Result "1-0"] [ECO "C69"] [WhiteElo "2702"] [BlackElo "2699"] [Annotator "Tobin,Sean"] [PlyCount "118"] [EventDate "2010.05.22"] {This is Kamsky’s win over GM Onischuk which ended Onischuk’s undefeated winning streak at 49 games - in U.S. Championship play that is. This win put Kamsky into contention for first place at the U.S. Chess Championship! He now has a play off match to win against Shulman if he is to become the U.S. Champion again. The last time Kamsky was the "champ" of the good old USA was way back in 1991.} 1. e4 e5 2. Nf3 Nc6 3. Bb5 { Ruy Lopez!!! A.k.a. SPANISH OPENING!} a6 4. Bxc6 (4. Ba4 { Leading to the main lines. - Coach Sean.}) 4... dxc6 { The Exchange Variation - which is notoriously drawish. - Coach Sean.} 5. O-O f6 6. d4 exd4 7. Nxd4 {The basic strategy of this opening - from white’s perspective - is to exchange off all the pieces and to win in the endgame because of his or her better pawn structure. Black has the Bishop pair, excellent lines and squares for the Black pieces and a very long game in front of him during which he can avoid those exchanges! The one exchange Black will want to make is of Queens. - Coach Sean.} c5 8. Ne2 Qxd1 9. Rxd1 { There go the Queens! : P - Coach Sean.} Bd7 10. Nbc3 O-O-O 11. Be3 b6 12. a4 Re8 13. a5 b5 14. f3 f5 15. Ng3 Nf6 16. Bg5 fxe4 17. Bxf6 gxf6 18. Ncxe4 Be7 19. Rd5 Be6 20. Rh5 Bf7 21. Rf5 Bg6 22. Rf4 c4 23. c3 Rhf8 24. Nf5 Bd8 25. g4 Re5 26. Kf2 Bxf5 27. gxf5 Rg8 28. Rh4 Rxf5 29. Rd1 Rg7 30. Ng3 Rc5 31. Rhd4 { Kamsky made the claim that he was worse here and that this move plus his move 32.f4 was a good defensive idea. All of you strong players out there in cyberspace, do you agree with Kamsky’s assessment? - Coach Sean.} Be7 32. f4 Bd6 33. Kf3 Kb7 34. R1d2 f5 35. Rd5 Rf7 36. Rxc5 Bxc5 37. Rd5 Kc6 38. Re5 Rd7 39. Rxf5 Rd3+ 40. Kg4 Bd6 41. Ne4 {After this move Kamsky offered Onischunk a draw which was... declined! This was probably because both players knew the result on board one which was a win for Shulman in Nakamura vs Shulman. - Coach Sean.} Re3 42. Nxd6 cxd6 43. Rf7 Re2 (43... b4 $1 {Kamsky claims that Onischuk would have been better after this move in the Rook and pawn endgame! - Coach Sean.}) 44. Ra7 Rxb2 45. Rxa6+ Kd5 $2 { "He played Kd5 really quickly, and I was really surprised." - Kamksy.} 46. Rb6 b4 47. cxb4 c3 48. b5 Kc5 49. Rc6+ Kxb5 50. Rxc3 Rxh2 51. f5 h5+ 52. Kg3 Rh1 53. f6 Rg1+ 54. Kf4 Rg8 55. Ra3 h4 56. a6 Ra8 57. a7 h3 58. Kg3 Kc6 59. f7 Kb7 (59... Kb7 {This is a clear cut win for Kamksy - here are some examples of the technique required to win this position. - Coach Sean.} 60. Kxh3 d5 61. Kg4 d4 62. Kf5 d
3 63. Rxd3 Rxa7 (63... Rf8 64. Ke6 Kxa7 65. Ke7 Rh8 66. f8=Q Rxf8 67. Kxf8) 64. f8=Q) 1-0
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