The U.S. Championship: Nakamura Takes the Sole Lead; Kamsky is Half a Point Behind

Время публикации: 13.05.2012 19:44 | Последнее обновление: 30.08.2012 13:39

There was only one draw in the fifth round of the U.S. Championship in Saint Louis; it was between Aleksandr Lenderman and Yury Shulman.

Hikaru Nakamura beat Gregory Kaidanov, who was sharing the first place with Hikaru prior to this round. The rating-favourite of the tournament gained a strategic advantage from the opening, which he managed to convert after a long struggle. Nakamura now has 4 points. Gata Kamsky is half a point behind, who won against Varuzhan Akobian in the Berlin endgame.


Hess - Onischuk

There were also wins by Alexander Onischuk, who managed to prove to Robert Hess the advantage of a rook and pawns over two knights in a complex game, by Ray Robson, in an interesting game against Alejandro Ramirez, but not without mistakes, and by Alexander Stripunsky, who beat Yasser Seirawan after his mistake on the move 38.

STRIPUNSKY - SEIRAWAN

The bishop is in danger, which Black underestimated. After 38...Kd6? 39.Rf3! with the follow-up Rff1! Seirawan lost. But 38...Ra6! with the idea of 39...Ra4 would have allowed Black to confidently look towards the future: it would make sense for White to play 39.Rc5 with an equality after 39...Bxb4 40.Kxb4 Rxb1 41.Nxb1 Ra1.

The women had the fourth round. The key encounters Zenyuk - Krush and Melekhina - Zatonskih were drawn. The leading trio is still Anna Zatonskih, Irina Krush and Iryna Zenyuk. Now they have 3 points each. Three other games were decisive; wins were achieved by Sabina Foisor, Tatev Abrahamyan and Viktorija Ni.

[Event "ch-USA 2012"] [Site "Saint Louis USA"] [Date "2012.05.12"] [Round "5"] [White "Nakamura, Hi"] [Black "Kaidanov, G."] [Result "1-0"] [ECO "E04"] [WhiteElo "2775"] [BlackElo "2594"] [PlyCount "139"] [EventDate "2012.05.08"] 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Na3 cxd4 8. Nxc4 Bc5 9. Qc2 O-O 10. Nce5 Bb6 11. Nxc6 bxc6 12. Rd1 Bb7 13. Nxd4 Bxd4 14. e3 Qb6 15. exd4 Rfd8 16. Rd3 Rd7 17. Be3 Nd5 18. Rb3 Qa5 19. Bd2 Qd8 20. Qc5 h6 21. Rc1 Nb6 22. Be3 Nd5 23. a4 a5 24. Bd2 Ne7 25. Bc3 Nd5 26. h3 Ne7 27. Kh2 Nd5 28. Be1 Ne7 29. Qe5 Nf5 30. Bc3 Qg5 31. Rc2 Ne7 32. Qe1 Ra7 33. Re2 Nf5 34. Rd2 Ne7 35. Qe5 Qxe5 36. dxe5 Nd5 37. Bd4 Ra8 38. Bc5 Ba6 39. Rc2 Rb7 40. Rxb7 Bxb7 41. Bd4 Kf8 42. f4 Ke8 43. Rc5 Kd7 44. Kg1 Kc7 45. Bf2 Bc8 46. Bf1 h5 47. h4 g6 48. b3 Bb7 49. Bd3 Bc8 50. Kg2 Bd7 51. Kf3 Bc8 52. g4 hxg4+ 53. Kxg4 Bd7 54. Kg5 Kb7 55. Be4 Rh8 56. Bf3 Ra8 57. Rc4 Kc7 58. Bc5 Rh8 59. Rc1 Bc8 60. Bf2 Bd7 61. f5 Rg8 62. f6 Rh8 63. Rc5 Ra8 64. Kh6 Nf4 65. Be3 Nh5 66. Bxh5 gxh5 67. Kg7 Be8 68. Kf8 Kb7 69. Ke7 Kc7 70. Bd2 1-0 [Event "ch-USA 2012"] [Site "Saint Louis USA"] [Date "2012.05.12"] [Round "5"] [White "Lenderman, A."] [Black "Shulman, Y."] [Result "1/2-1/2"] [ECO "E10"] [WhiteElo "2587"] [BlackElo "2571"] [PlyCount "60"] [EventDate "2012.05.08"] 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. e3 Be7 5. Nbd2 O-O 6. b3 b6 7. Bb2 Bb7 8. Bd3 c5 9. O-O Nc6 10. Rc1 Rc8 11. Qe2 dxc4 12. bxc4 Qc7 13. dxc5 bxc5 14. Rfd1 Rfd8 15. Bc3 h6 16. h3 Nd7 17. Nb3 Nb4 18. Bb1 Bf6 19. Bxf6 Nxf6 20. a3 Bxf3 21. gxf3 Rxd1+ 22. Rxd1 Nc6 23. Nxc5 Ne5 24. Ne4 Nxe4 25. Bxe4 Qxc4 26. Qb2 Qc7 27. f4 Nd7 28. Qb4 Nf6 29. Bf3 g6 30. Kg2 Kg7 1/2-1/2 [Event "ch-USA 2012"] [Site "Saint Louis USA"] [Date "2012.05.12"] [Round "5"] [White "Kamsky, G."] [Black "Akobian, V."] [Result "1-0"] [ECO "C67"] [WhiteElo "2741"] [BlackElo "2625"] [PlyCount "99"] [EventDate "2012.05.08"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. Rd1+ Ke8 10. Nc3 h6 11. b3 Ne7 12. h3 Ng6 13. Ne2 a5 14. a4 Be6 15. Bb2 Bc5 16. Nd2 Rd8 17. Ne4 Rxd1+ 18. Rxd1 Be7 19. f3 h5 20. Kf2 Bd5 21. N4g3 Bc5+ 22. Bd4 Bf8 23. c4 Be6 24. Ne4 b6 25. Bc3 c5 26. Bb2 Be7 27. N2c3 c6 28. Nd6+ Kf8 29. Nce4 h4 30. Nb7 Ke8 31. Nf6+ gxf6 32. exf6 Rg8 33. Ke3 Nf8 34. Rd2 Nd7 35. fxe7 Kxe7 36. Nd6 f6 37. Kf4 Nf8 38. Bc3 Ng6+ 39. Ke4 Nf8 40. Ke3 Rg6 41. Kf2 Rg8 42. Ne4 Nh7 43. Kf1 Rg6 44. Re2 Nf8 45. f4 Nd7 46. Be1 Rh6 47. f5 Bf7 48. Bd2 Rh8 49. Nxf6+ Kd8 50. Bg5 1-0 [Event "ch-USA 2012"] [Site "Saint Louis USA"] [Date "2012.05.12"] [Round "5"] [White "Ramirez, Alej"] [Black "Robson, R."] [Result "0-1"] [ECO "D34"] [WhiteElo "2593"] [BlackElo "2614"] [PlyCount "126"] [EventDate "2012.05.08"] 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O O-O 9. dxc5 Bxc5 10. Na4 Be7 11. Be3 Ne4 12. Rc1 Re8 13. Nd4 Bd7 14. Nb3 Bf5 15. Nac5 Bxc5 16. Bxc5 Qd7 17. Re1 Bh3 18. Bh1 h5 19. Be3 h4 20. Nc5 Nxc5 21. Bxc5 Rad8 22. Qd2 hxg3 23. hxg3 Re5 24. Qf4 Rde8 25. Bf3 g5 26. Qd2 Bg4 27. Bg2 f6 28. e3 Bh3 29. Bh1 Kg7 30. Bd4 Re4 31. Rc5 Nxd4 32. Bxe4 dxe4 33. exd4 Bg4 34. Qc3 Kg6 35. Rc7 Qd5 36. Qc5 Qxc5 37. dxc5 Bf3 38. Re3 g4 39. Rxb7 Rh8 40. Rxf3 gxf3 41. Rb4 Kf5 42. c6 Rc8 43. Rc4 Ke5 44. c7 f5 45. b3 a5 46. Kh2 Rh8+ 47. Kg1 Rc8 48. a3 Kd5 49. g4 fxg4 50. a4 Ke5 51. Kh2 Kf4 52. Rc5 Rh8+ 53. Kg1 Rc8 54. Kh2 g3+ 55. fxg3+ Ke3 56. Kg1 Ke2 57. Rc2+ Kd3 58. Rc4 e3 59. Kf1 f2 60. Kg2 Ke2 61. Rc2+ Ke1 62. Rc1+ Kd2 63. Rc4 e2 0-1 [Event "ch-USA 2012"] [Site "Saint Louis USA"] [Date "2012.05.12"] [Round "5"] [White "Stripunsky, A."] [Black "Seirawan, Y."] [Result "1-0"] [ECO "B10"] [WhiteElo "2562"] [BlackElo "2643"] [PlyCount "79"] [EventDate "2012.05.08"] 1. e4 c6 2. c4 d5 3. cxd5 cxd5 4. exd5 Nf6 5. Qa4+ Nbd7 6. Nc3 g6 7. Nf3 Bg7 8. Bc4 a6 9. d3 O-O 10. Qa3 b6 11. O-O Bb7 12. Be3 b5 13. Bb3 Nb6 14. Bxb6 Qxb6 15. Qxe7 a5 16. Qe3 Qxe3 17. fxe3 a4 18. Bd1 Nxd5 19. Nxd5 Bxd5 20. d4 Rfe8 21. Kf2 a3 22. Bb3 axb2 23. Rab1 Bxb3 24. axb3 Ra2 25. Rfe1 Bf8 26. Re2 Ba3 27. Rc2 Ra1 28. Nd2 Kf8 29. Ke2 Ke7 30. e4 Kd7 31. Kd3 f6 32. b4 Ra8 33. Rc5 Rb8 34. Kc3 Rb6 35. g4 Re6 36. Kb3 Rd6 37. d5 Rb6 38. Rc3 Kd6 39. Rf3 Ke5 40. Rff1 1-0 [Event "ch-USA 2012"] [Site "Saint Louis USA"] [Date "2012.05.12"] [Round "5"] [White "Hess, Ro"] [Black "Onischuk, Al"] [Result "0-1"] [ECO "C78"] [WhiteElo "2635"] [BlackElo "2660"] [PlyCount "78"] [EventDate "2012.05.08"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bb7 7. Re1 Bc5 8. c3 O-O 9. d4 Bb6 10. Be3 exd4 11. cxd4 Na5 12. d5 Bxe3 13. Rxe3 c6 14. d6 Nxb3 15. Qxb3 c5 16. Nbd2 Qb6 17. h3 Rae8 18. Qc2 Qc6 19. Rae1 Nh5 20. Nb3 Qxd6 21. Qxc5 Qh6 22. Nfd4 d6 23. Qc7 Bc8 24. Nc6 Nf4 25. Nbd4 Bxh3 26. Rxh3 Nxh3+ 27. gxh3 Qxh3 28. Qxd6 Qg4+ 29. Qg3 Rxe4 30. Rxe4 Qxe4 31. Nf5 g6 32. Ncd4 h5 33. Qg5 Re8 34. Nd6 Qe7 35. Qxe7 Rxe7 36. Nb3 Re2 37. Nc5 Rxb2 38. Nxa6 Rxa2 39. Nb4 Rd2 0-1 [Event "ch-USA w 2012"] [Site "Saint Louis USA"] [Date "2012.05.12"] [Round "4"] [White "Zenyuk, I."] [Black "Krush, I."] [Result "1/2-1/2"] [ECO "D45"] [WhiteElo "2224"] [BlackElo "2457"] [PlyCount "60"] [EventDate "2012.05.08"] 1. d4 d5 2. c4 e6 3. Nc3 c6 4. e3 Nf6 5. Nf3 Nbd7 6. Qc2 Bd6 7. Bd3 dxc4 8. Bxc4 O-O 9. O-O a6 10. a3 c5 11. dxc5 Bxc5 12. b4 Bd6 13. Bd3 Qc7 14. Bb2 b6 15. Ne4 Qxc2 16. Bxc2 Be7 17. Ne5 Nxe5 18. Bxe5 Bb7 19. Nxf6+ Bxf6 20. Bxf6 gxf6 21. Rac1 Rac8 22. Rfd1 f5 23. Bd3 Rfd8 24. Rxc8 Rxc8 25. Be2 Rc3 26. Rd3 Rc1+ 27. Rd1 Rc3 28. Rd3 Rc1+ 29. Rd1 Rc3 30. Rd3 Rc1+ 1/2-1/2 [Event "ch-USA w 2012"] [Site "Saint Louis USA"] [Date "2012.05.12"] [Round "4"] [White "Ni, V."] [Black "Goletiani, R."] [Result "1-0"] [ECO "A81"] [WhiteElo "2228"] [BlackElo "2333"] [PlyCount "55"] [EventDate "2012.05.08"] 1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nc3 d5 5. Bg5 c6 6. Qd2 Be6 7. h4 Nbd7 8. Nh3 Bf7 9. Bh6 Bxh6 10. Qxh6 Qb6 11. O-O-O O-O-O 12. h5 e5 13. e3 Rdg8 14. dxe5 Nxe5 15. hxg6 hxg6 16. Qf4 Nc4 17. b3 Qa5 18. Nb1 Nh5 19. Qd4 Nd6 20. Ng5 Rd8 21. g4 c5 22. Qc3 Qxc3 23. Nxc3 fxg4 24. Nxd5 Bxd5 25. Rxd5 b6 26. Ne6 Nf5 27. Nxd8 Rxd8 28. Rxf5 1-0 [Event "ch-USA w 2012"] [Site "Saint Louis USA"] [Date "2012.05.12"] [Round "4"] [White "Melekhina, A."] [Black "Zatonskih, A."] [Result "1/2-1/2"] [ECO "B22"] [WhiteElo "2242"] [BlackElo "2510"] [PlyCount "87"] [EventDate "2012.05.08"] 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. dxc5 Qxc5 7. Be3 Qd5 8. Nbd2 Nc6 9. Bc4 Bxf3 10. Bxd5 Bxd1 11. Bxc6+ bxc6 12. Rxd1 e6 13. Nb3 Nd5 14. Bd4 a5 15. a4 f6 16. Kd2 e5 17. Bc5 Rb8 18. Bxf8 Rxb3 19. Kc2 Rb7 20. Bc5 Kf7 21. Rb1 Nf4 22. g3 Ne6 23. Be3 f5 24. b4 f4 25. Bd2 Rd8 26. bxa5 Ra7 27. gxf4 exf4 28. Rhe1 Rxa5 29. Rb4 g5 30. Rb7+ Kf6 31. Rxh7 Rxa4 32. Rh6+ Kg7 33. Rexe6 Ra2+ 34. Kb3 Raxd2 35. Rhg6+ Kh7 36. Rh6+ Kg7 37. Rhg6+ Kh7 38. Rxg5 Rxf2 39. Rh5+ Kg7 40. Rxc6 Rf8 41. Rg5+ Kh7 42. Rh5+ Kg7 43. Rg5+ Kh7 44. Rh5+ 1/2-1/2 [Event "ch-USA w 2012"] [Site "Saint Louis USA"] [Date "2012.05.12"] [Round "4"] [White "Foisor, S."] [Black "Kats, A."] [Result "1-0"] [ECO "D45"] [WhiteElo "2364"] [BlackElo "2137"] [PlyCount "55"] [EventDate "2012.05.08"] 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 Nbd7 6. Qc2 Be7 7. g4 Nxg4 8. Rg1 h5 9. h3 Nh6 10. Rxg7 Bf8 11. Rg2 b6 12. cxd5 exd5 13. e4 Nf6 14. e5 Nfg8 15. Rg5 Be6 16. Rxh5 Qd7 17. Bg5 Bf5 18. Qd2 Qe6 19. Bd3 f6 20. Bxf6 Nxf6 21. Bxf5 Nxf5 22. Rxh8 O-O-O 23. Ng5 Qe7 24. Qf4 Nxd4 25. Qxd4 Nd7 26. f4 Bg7 27. Rxd8+ Kxd8 28. Nf3 1-0 [Event "ch-USA w 2012"] [Site "Saint Louis USA"] [Date "2012.05.12"] [Round "4"] [White "Abrahamyan, T."] [Black "Baginskaite, C."] [Result "1-0"] [ECO "C50"] [WhiteElo "2329"] [BlackElo "2358"] [PlyCount "75"] [EventDate "2012.05.08"] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d3 d6 6. c3 a6 7. Bb3 Ba7 8. Nbd2 O-O 9. h3 Re8 10. Re1 Be6 11. Bc2 h6 12. Nf1 d5 13. Qe2 Qd7 14. Ng3 Rad8 15. Kh2 Bc5 16. Nh4 Bf8 17. Qf3 d4 18. Ngf5 Nh7 19. Bd2 Kh8 20. g4 Ng5 21. Qg3 g6 22. cxd4 exd4 23. f4 Nh7 24. Rg1 Bb4 25. Rad1 Bxd2 26. Rxd2 Bxf5 27. gxf5 g5 28. Nf3 Rg8 29. Rdg2 Ne7 30. Ne5 Qe8 31. Bb3 Rg7 32. fxg5 hxg5 33. f6 Nxf6 34. Qf3 Ng6 35. Rxg5 Nxe5 36. Qxf6 Ng6 37. Rh5+ Kg8 38. Rxg6 1-0 

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