The U.S. Championship: the Diarchy Is in Both Sections; Kaidanov Ended Up in an Endgame Study

Время публикации: 16.05.2012 17:49 | Последнее обновление: 30.08.2012 13:37

In the U.S. Championship that continues in Saint Louis, after the common free day, there was the seventh round in the Men's Section and the sixth round in the Women's.

Hikaru Nakamura had to give up the sole lead. Despite his titanic efforts, the rating-favourite of the tournament wasn't able to realise a pawn advantage in his game against Yury Shulman and was forced to be content with a draw. Meanwhile, Nakamura's main rival Gata Kamsky outplayed Alexander Stripunsky (this game could have finished a bit earlier, if, after the opponent's mistake, Kamsky found the forced win on the move 52, by sacrificing a rook on f4).

Apart from Kamsky's win, two more games ended decisively. Varuzhan Akobian beat Robert Hess. Gregory Kaidanov lost his third game on the row, this time to Alejandro Ramirez.

The opponents made several mistakes in the sharpest middlegame. Ramirez ended up in a slightly worse endgame with a pawn for an exchange. However, the veteran got carried away with a mistaken idea.

RAMIREZ - KAIDANOV

52...Rc3?
Black could have still made a draw here: 52...d3 53.Bd5+ Kd4 54.a7 d2 55.a8Q d1Q 56.Qa4+ Kc3! (only this way) 57.Kxe3 Qxd5 (it's possible to play 57...Qd3+ first), and after 58.g4 it's not possible to take on b3 with the queen, but Black can just check, including from the d4 square.
53.a7 Rc2+

It may seem that the bishop isn't able to help the pawn. But White decided the problem by voluntarily putting his bishop under a pin.
54.Be2! Ra2 55.a8Q+! Rxa8 56.Bf3+,
easily winning the rook.

Yasser Seirawan drew his game for the first time in the Championship.

The veteran fought against Aleksandr Lenderman with black.

Ray Robson and Alexander Onischuk also finished their game peacefully.

Nakamura and Kamsky are heading the table with 5 out of 7 points; their nearest rivals are a point behind: Onischuk, Lenderman and Shulman.

Most encounters developed unpredictably in the games of the sixth round of the Women's Championship.

APRAHAMYAN - S.FOISOR

Can Black lose this game? And why not.
37...Kg8?! 38.Rc5 Qxh3? 39.Qc4+! Kh7 40.Qc2+! Kh8 41.Rc8+ Ng8 42.Qc4!
And it's all over:
42...g5+ 43.Ke5 Re1+ 44.Nxe1 Qh2+ 45.Ke4 Qf4+ 46.Kd3 Qf5+ 47.Ke2 1-0

Anna Zatonskih, who beat Iryna Zenyuk, caught up with the sole leader Irina Krush, who drew her game against Rusudan Goletiani. Zatonskih and Krush are leading with 4.5 out of 6 each, leaving the rest of the field behind. 

[Event "ch-USA 2012"] [Site "Saint Louis USA"] [Date "2012.05.15"] [Round "7"] [White "Kamsky, G."] [Black "Stripunsky, A."] [Result "1-0"] [ECO "B17"] [WhiteElo "2741"] [BlackElo "2562"] [PlyCount "127"] [EventDate "2012.05.08"] 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Bd3 Ndf6 6. Ng5 h6 7. N5f3 Bf5 8. Bxf5 Qa5+ 9. c3 Qxf5 10. Qb3 Qc8 11. Ne5 e6 12. Ngf3 Bd6 13. Bf4 Bxe5 14. Bxe5 Ne7 15. h3 Qd7 16. O-O O-O 17. a4 Ng6 18. Bh2 a5 19. Rad1 b5 20. Qc2 Rfd8 21. Rfe1 Nd5 22. b3 Rac8 23. Ra1 Ra8 24. Nd2 Nde7 25. Ne4 Qd5 26. Rad1 Nf5 27. Rd2 Nfh4 28. f3 Rac8 29. Nc5 Qg5 30. Kh1 Rd5 31. Ne4 Qd8 32. Red1 Nf5 33. Bg1 Nf4 34. Bf2 Qe7 35. c4 bxc4 36. bxc4 Rdd8 37. Qc3 Ra8 38. Rb1 Nd6 39. Bg3 Nxe4 40. fxe4 e5 41. d5 Rac8 42. Rbd1 cxd5 43. exd5 Qc5 44. Bxf4 exf4 45. Rd4 Rd6 46. Qd3 g5 47. Re4 Kg7 48. Rb1 Qf2 49. Rf1 Qc5 50. h4 Rb8 51. Qc3+ Kg6 52. Qe5 Rbd8 53. h5+ Kh7 54. Rb1 Qc8 55. Kg1 Qg4 56. Rd4 Qxh5 57. c5 Qg6 58. Rc1 Rf6 59. c6 Rf5 60. Qe4 g4 61. c7 Rc8 62. d6 f3 63. d7 Qh5 64. dxc8=Q 1-0 [Event "ch-USA 2012"] [Site "Saint Louis USA"] [Date "2012.05.15"] [Round "7"] [White "Hess, Ro"] [Black "Akobian, V."] [Result "0-1"] [ECO "B12"] [WhiteElo "2635"] [BlackElo "2625"] [PlyCount "134"] [EventDate "2012.05.08"] 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Nbd2 Nd7 6. Nb3 Ne7 7. c3 Bg4 8. h3 Bh5 9. Be3 Nf5 10. Bd3 Nxe3 11. fxe3 f6 12. exf6 gxf6 13. g4 Bf7 14. Qe2 Qc7 15. O-O-O O-O-O 16. Kb1 a5 17. Qc2 e5 18. dxe5 fxe5 19. Bxh7 a4 20. Nbd2 Be7 21. h4 a3 22. Ng5 Bg8 23. Bxg8 Rdxg8 24. Ndf3 e4 25. Nd4 Ne5 26. Nf5 Bxg5 27. hxg5 Rxh1 28. Rxh1 axb2 29. Qxb2 Kb8 30. Rh6 Nc4 31. Qh2 Qxh2 32. Rxh2 Rxg5 33. Rh4 Ne5 34. Nh6 Rg6 35. Kc2 Ka7 36. Kb3 Kb6 37. Kb4 c5+ 38. Kb3 Ka5 39. Rh5 Rb6+ 40. Kc2 Nc4 41. Nf5 Rb2+ 42. Kd1 Rxa2 43. Ke1 Rg2 44. Rg5 Ne5 45. Rg7 b5 46. Ne7 Rxg4 47. Rxg4 Nxg4 48. Nxd5 Ka4 49. Nb6+ Kb3 50. Nd7 Kxc3 51. Nxc5 Nf6 52. Ke2 b4 53. Kd1 Kc4 54. Na4 Kd3 55. Nc5+ Kxe3 56. Kc2 Nd5 57. Kb3 Kf3 58. Kc4 e3 59. Nd3 e2 60. Ne1+ Kf2 61. Nd3+ Ke3 62. Ne1 Nf4 63. Nc2+ Kd2 64. Nd4 Nd3 65. Nf3+ Kc2 66. Nd4+ Kd1 67. Nf3 Ne5+ 0-1 [Event "ch-USA 2012"] [Site "Saint Louis USA"] [Date "2012.05.15"] [Round "7"] [White "Robson, R."] [Black "Onischuk, Al"] [Result "1/2-1/2"] [ECO "C47"] [WhiteElo "2614"] [BlackElo "2660"] [PlyCount "81"] [EventDate "2012.05.08"] 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nd5 Be7 6. Bc4 d6 7. Nxd4 Nxd4 8. Qxd4 Nxd5 9. Bxd5 O-O 10. O-O c6 11. Bb3 Be6 12. Qd3 Bf6 13. c3 Bxb3 14. axb3 Qe7 15. Bf4 Rfe8 16. f3 Be5 17. Be3 d5 18. exd5 Bxc3 19. bxc3 Qxe3+ 20. Qxe3 Rxe3 21. dxc6 bxc6 22. Rfe1 Rxe1+ 23. Rxe1 Kf8 24. b4 a5 25. Ra1 a4 26. Kf2 c5 27. bxc5 Ke7 28. Ke3 Kd7 29. Kd4 Kc6 30. Kc4 Ra5 31. Ra2 Rxc5+ 32. Kb4 Rb5+ 33. Kxa4 Kc5 34. Re2 Rb7 35. Re4 Rb2 36. Rg4 g6 37. Ka3 Rf2 38. Kb3 f5 39. Rg5 Kd5 40. h4 Ke5 41. h5 1/2-1/2 [Event "ch-USA 2012"] [Site "Saint Louis USA"] [Date "2012.05.15"] [Round "7"] [White "Nakamura, Hi"] [Black "Shulman, Y."] [Result "1/2-1/2"] [ECO "D31"] [WhiteElo "2775"] [BlackElo "2571"] [PlyCount "201"] [EventDate "2012.05.08"] 1. c4 e6 2. Nc3 d5 3. d4 c6 4. e4 dxe4 5. Nxe4 Bb4+ 6. Bd2 Qxd4 7. Bxb4 Qxe4+ 8. Be2 Na6 9. Ba5 Bd7 10. Nf3 Nf6 11. O-O Qf5 12. Bc3 Ne4 13. Bxg7 Rg8 14. Bh6 O-O-O 15. Qc1 c5 16. Qe3 Bc6 17. Rfd1 Rxd1+ 18. Rxd1 Nb4 19. Qf4 Qxf4 20. Bxf4 f6 21. Ne1 Ba4 22. Ra1 e5 23. Be3 b6 24. a3 Nc6 25. Bd3 f5 26. b4 Nd4 27. f4 exf4 28. Bxd4 cxd4 29. Nf3 a5 30. Nh4 Bd7 31. Rf1 axb4 32. axb4 Kc7 33. Rxf4 Ra8 34. Bxe4 fxe4 35. Rxe4 Ra4 36. Rxd4 Rxb4 37. Nf3 b5 38. cxb5 Rxb5 39. Kf2 Kd8 40. Re4 Bf5 41. Re2 Rb4 42. Re5 Bg6 43. h4 Re4 44. Ra5 Rb4 45. g3 Ke7 46. Ke3 Re4+ 47. Kf2 Rb4 48. Ra2 Kf6 49. Nd2 Bb1 50. Ra6+ Kg7 51. Rd6 Bf5 52. Nf3 Re4 53. Ng5 Re7 54. Rd4 h5 55. Kf3 Bg4+ 56. Kf4 Re1 57. Rd3 Rf1+ 58. Ke5 Re1+ 59. Ne4 Kg6 60. Rb3 Kg7 61. Ra3 Kg6 62. Rc3 Kg7 63. Kd4 Rd1+ 64. Kc5 Bf5 65. Nd6 Kg6 66. Rf3 Be6 67. Re3 Bf5 68. Re5 Rc1+ 69. Kb4 Rf1 70. Re3 Kf6 71. Kc3 Rd1 72. Nb5 Bg4 73. Nd4 Rc1+ 74. Kd3 Rd1+ 75. Ke4 Ra1 76. Rb3 Re1+ 77. Kd5 Be6+ 78. Nxe6 Re5+ 79. Kd4 Rxe6 80. Rb5 Kg6 81. Re5 Ra6 82. Ke4 Ra4+ 83. Kf3 Ra3+ 84. Kf4 Ra4+ 85. Re4 Ra6 86. Re8 Ra4+ 87. Ke5 Ra5+ 88. Kd4 Ra4+ 89. Kc5 Ra3 90. Rg8+ Kh7 91. Rg5 Ra5+ 92. Kd4 Rxg5 93. hxg5 Kg6 94. Ke4 Kxg5 95. Ke3 Kg4 96. Kf2 h4 97. Kg2 hxg3 98. Kg1 Kf3 99. Kf1 g2+ 100. Kg1 Ke2 101. Kxg2 1/2-1/2 [Event "ch-USA 2012"] [Site "Saint Louis USA"] [Date "2012.05.15"] [Round "7"] [White "Lenderman, A."] [Black "Seirawan, Y."] [Result "1/2-1/2"] [ECO "D37"] [WhiteElo "2587"] [BlackElo "2643"] [PlyCount "105"] [EventDate "2012.05.08"] 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Nbd7 5. Bg5 h6 6. Bh4 Be7 7. e3 O-O 8. Rc1 a6 9. c5 Ne4 10. Bxe7 Qxe7 11. Nxe4 dxe4 12. Nd2 Nf6 13. Nc4 Bd7 14. Ne5 Bb5 15. Qc2 Bxf1 16. Kxf1 Qd8 17. h4 h5 18. Qe2 g6 19. g4 hxg4 20. h5 g5 21. h6 Kh7 22. b3 Qe7 23. c6 b6 24. Nd7 Rg8 25. Nxf6+ Qxf6 26. Qxg4 Qf3 27. Qxf3 exf3 28. Ke1 Rad8 29. Kd2 Rd6 30. Kd3 f5 31. Rh5 e5 32. Rg1 e4+ 33. Kc4 Rxc6+ 34. Kd5 Rc2 35. Rhxg5 Rxg5 36. Rxg5 Rxa2 37. Rxf5 Rxf2 38. Kxe4 Kxh6 39. Rf6+ Kg5 40. Rc6 Rb2 41. Kxf3 Rxb3 42. Ke4 a5 43. Rxc7 Kf6 44. Kf4 Ke6 45. e4 Kd6 46. Rh7 a4 47. e5+ Kd5 48. Rd7+ Kc6 49. Ra7 b5 50. Ke4 Kb6 51. Ra8 Kb7 52. Ra5 Kb6 53. Ra8 1/2-1/2 [Event "ch-USA 2012"] [Site "Saint Louis USA"] [Date "2012.05.15"] [Round "7"] [White "Ramirez, Alej"] [Black "Kaidanov, G."] [Result "1-0"] [ECO "D43"] [WhiteElo "2593"] [BlackElo "2594"] [PlyCount "127"] [EventDate "2012.05.08"] 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c6 5. Bg5 Nbd7 6. cxd5 exd5 7. e3 Be7 8. Bd3 Ne4 9. Bf4 Ndf6 10. h3 O-O 11. Qc2 Re8 12. O-O Bd6 13. Ne5 g6 14. Ne2 Nh5 15. Bh2 f6 16. f3 fxe5 17. fxe4 exd4 18. e5 Bxe5 19. Bxe5 Rxe5 20. Bxg6 Qg5 21. Bxh7+ Kg7 22. Nxd4 Rxe3 23. h4 Qh6 24. Rf2 Ng3 25. Raf1 Nxf1 26. Rxf1 Be6 27. Bf5 Bg8 28. Bc8 Bh7 29. Nf5+ Bxf5 30. Qxf5 Kh8 31. Qd7 Rg3 32. Qxb7 Rg8 33. Bh3 Raf8 34. Rxf8 Rxf8 35. Qxa7 Qc1+ 36. Kh2 Qf4+ 37. Kg1 Qxh4 38. Qe3 Qf4 39. Qe7 Qf6 40. Qc5 Qf1+ 41. Kh2 Qf4+ 42. Kg1 Re8 43. Qf2 Qxf2+ 44. Kxf2 c5 45. Bd7 Re7 46. Bc6 d4 47. Bb5 Kg7 48. a4 Kf6 49. b3 Re3 50. Bc4 Ke5 51. a5 Ke4 52. a6 Rc3 53. a7 Rc2+ 54. Be2 Ra2 55. a8=Q+ Rxa8 56. Bf3+ Kd3 57. Bxa8 Kc2 58. g4 Kxb3 59. g5 c4 60. g6 d3 61. g7 d2 62. Bf3 c3 63. g8=Q+ Kb2 64. Bd1 1-0 [Event "ch-USA w 2012"] [Site "Saint Louis USA"] [Date "2012.05.15"] [Round "6"] [White "Abrahamyan, T."] [Black "Foisor, S."] [Result "1-0"] [ECO "C41"] [WhiteElo "2329"] [BlackElo "2364"] [PlyCount "93"] [EventDate "2012.05.08"] 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. Re1 c6 8. a4 b6 9. Ba2 a6 10. h3 Rb8 11. Bg5 Re8 12. Qd2 b5 13. Rad1 b4 14. Nb1 Qa5 15. dxe5 Nxe5 16. Nxe5 dxe5 17. Bb3 Be6 18. Bxe6 fxe6 19. b3 Rf8 20. Qe2 Bc5 21. Nd2 Bd4 22. Nf3 Qc5 23. Rd3 h6 24. Be3 Bxe3 25. Qxe3 Qxc2 26. Rc1 Qb2 27. Rxc6 Rbd8 28. Rxd8 Rxd8 29. Rxe6 Qb1+ 30. Kh2 Nxe4 31. Rxe5 Nf6 32. Qb6 Rd1 33. Qxb4 Rh1+ 34. Kg3 Qg6+ 35. Kf4 Qxg2 36. Qc4+ Kh7 37. Qd3+ Kg8 38. Rc5 Qxh3 39. Qc4+ Kh7 40. Qc2+ Kh8 41. Rc8+ Ng8 42. Qc4 g5+ 43. Ke5 Re1+ 44. Nxe1 Qh2+ 45. Ke4 Qf4+ 46. Kd3 Qf5+ 47. Ke2 1-0 [Event "ch-USA w 2012"] [Site "Saint Louis USA"] [Date "2012.05.15"] [Round "6"] [White "Melekhina, A."] [Black "Baginskaite, C."] [Result "1-0"] [ECO "B51"] [WhiteElo "2242"] [BlackElo "2358"] [PlyCount "59"] [EventDate "2012.05.08"] 1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. O-O Bd7 5. Re1 Nf6 6. c3 a6 7. Bxc6 Bxc6 8. d4 Bxe4 9. Bg5 Bd5 10. c4 Bxf3 11. Qxf3 cxd4 12. Bxf6 gxf6 13. Qxf6 Rg8 14. Qxd4 Bg7 15. Qd2 Rc8 16. Na3 Qb6 17. Rab1 Rc5 18. Qe3 Bf6 19. g3 Qc6 20. b3 Re5 21. Qd3 Rh5 22. Nc2 Rg4 23. Nb4 Qc5 24. Qf3 Rgg5 25. Qxf6 Re5 26. Rxe5 dxe5 27. Qh8+ Kd7 28. Rd1+ Ke6 29. Nd3 Qc6 30. Re1 1-0 [Event "ch-USA w 2012"] [Site "Saint Louis USA"] [Date "2012.05.15"] [Round "6"] [White "Krush, I."] [Black "Goletiani, R."] [Result "1/2-1/2"] [ECO "A43"] [WhiteElo "2457"] [BlackElo "2333"] [PlyCount "101"] [EventDate "2012.05.08"] 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. Nc3 e5 5. e4 Be7 6. h3 h5 7. g3 Nbd7 8. Be2 Nf8 9. Kf1 Ng6 10. h4 Ng4 11. Ng5 Nf8 12. f3 Nh6 13. Be3 a6 14. a4 f6 15. Nh3 g5 16. Qd2 Nf7 17. Nf2 gxh4 18. Rxh4 f5 19. Rh1 h4 20. exf5 hxg3 21. Rxh8 Nxh8 22. Nfe4 Bxf5 23. Nxg3 Qd7 24. Kf2 Nfg6 25. Rh1 O-O-O 26. Nxf5 Qxf5 27. Qd3 Qf7 28. Qe4 Rf8 29. Bf1 Nh4 30. Bh3+ Kb8 31. Bg4 Qf6 32. b4 cxb4 33. Ne2 a5 34. c3 Qg6 35. Qc4 Nxf3 36. Bxf3 Qf5 37. Ng1 Ng6 38. Ke1 Qb1+ 39. Bd1 Rc8 40. Qb5 Qe4 41. Qb6 Rc5 42. Rh3 bxc3 43. Bc2 Qxc2 44. Bxc5 dxc5 45. Ne2 c4 46. d6 Qd2+ 47. Kf1 Qd1+ 48. Kf2 Bxd6 49. Qd8+ Ka7 50. Qxa5+ Kb8 51. Qd8+ 1/2-1/2 [Event "ch-USA w 2012"] [Site "Saint Louis USA"] [Date "2012.05.15"] [Round "6"] [White "Zenyuk, I."] [Black "Zatonskih, A."] [Result "0-1"] [ECO "E59"] [WhiteElo "2224"] [BlackElo "2510"] [PlyCount "106"] [EventDate "2012.05.08"] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O Nc6 8. a3 Bxc3 9. bxc3 dxc4 10. Bxc4 Qc7 11. Bb2 b6 12. Qe2 e5 13. h3 e4 14. Nd2 Bb7 15. a4 Rfe8 16. Rfd1 Na5 17. Ba2 Bc6 18. Bb1 Qd7 19. Bc2 cxd4 20. cxd4 Bd5 21. Rdc1 Rac8 22. Bd1 Rxc1 23. Rxc1 Rc8 24. Rxc8+ Qxc8 25. Qb5 h6 26. Qb4 Qd7 27. Ba3 Qc8 28. Qb2 Qc6 29. Be7 Ne8 30. Bb4 Nc4 31. Nxc4 Bxc4 32. Qc3 Qd5 33. Bc2 f5 34. Ba3 Kh7 35. Qb4 Nf6 36. Qd6 Qxd6 37. Bxd6 Nd5 38. g4 g6 39. gxf5 gxf5 40. Kg2 a6 41. Bf4 Nxf4+ 42. exf4 Kg6 43. d5 Bxd5 44. Kf1 Bc4+ 45. Ke1 Kh5 46. Kd2 Kh4 47. Kc3 Be6 48. Kd4 Kxh3 49. Bd1 Kg2 50. Ke3 b5 51. axb5 axb5 52. f3 exf3 53. Bxf3+ Kg3 0-1 [Event "ch-USA w 2012"] [Site "Saint Louis USA"] [Date "2012.05.15"] [Round "6"] [White "Ni, V."] [Black "Kats, A."] [Result "1-0"] [ECO "D48"] [WhiteElo "2228"] [BlackElo "2137"] [PlyCount "121"] [EventDate "2012.05.08"] 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 a6 9. e4 c5 10. d5 e5 11. O-O Bd6 12. b3 O-O 13. a4 c4 14. bxc4 bxc4 15. Bxc4 Qc7 16. Qd3 Nc5 17. Qe2 Bg4 18. Ba2 Rfb8 19. Bg5 Rb4 20. Bxf6 gxf6 21. Qe3 Nb3 22. Bxb3 Rxb3 23. Nb5 Qc2 24. Qd2 Qxd2 25. Nxd2 axb5 26. Nxb3 bxa4 27. Rfc1 Rb8 28. Nc5 a3 29. f3 Rb5 30. fxg4 Bxc5+ 31. Kf1 Kf8 32. Rcb1 Ra5 33. Ke2 Ra4 34. Kf3 Rd4 35. Rb3 Ra4 36. Ra2 Ke7 37. Rb7+ Kf8 38. Rc7 Bd6 39. Rd7 Bc5 40. h4 h6 41. Rc7 Bd6 42. Rc6 Ke7 43. Ke3 Kd7 44. g3 Ke7 45. Kf3 Kd7 46. Rc3 Ke7 47. Re3 Bc5 48. Ree2 Rd4 49. g5 fxg5 50. Kg4 Rd3 51. Rac2 Bd6 52. Rc6 Rb3 53. Ra6 f6 54. Ra7+ Kd8 55. Rc2 Bb8 56. Rh7 gxh4 57. gxh4 Bd6 58. Kf5 Be7 59. d6 Bxd6 60. Ke6 Rb6 61. Rd7+ 1-0 

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