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Nakamura - Shankland [2016]

Apr 21st, 2016
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  1. 24.fxe6! nice attack missed by Nakamura
  2. 27.Qxd5! nice attack missed by Nakamura
  3. Both attacks win white bishop, controlling a8 passer
  4. [pgn]
  5. [Event "US Chess Championships"]
  6. [Site "Saint Louis USA"]
  7. [Date "2016.04.18"]
  8. [EventDate "2016.04.13"]
  9. [Round "5"]
  10. [Result "1-0"]
  11. [White "Hikaru Nakamura"]
  12. [Black "Samuel Shankland"]
  13. [ECO "B11"]
  14. [WhiteElo "2787"]
  15. [BlackElo "2656"]
  16. [PlyCount "73"]
  17.  
  18. 1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. h3 Bxf3 5. Qxf3 e6 6. g3 g6 7. d4 Bg7 8.
  19. Be3 Nf6 9. Bg2 O-O 10. O-O Na6 11. e5 Nd7 12. Qd1 c5 13. f4 cxd4 14. Bxd4
  20. Nb4 15. Ne2 Qc7 16. c3 Nc6 17. Be3 Rfc8 18. Kh1 b5 19. Rc1 Bf8 20. g4 Bc5
  21. 21. Nd4 Qb6 22. Bg1 b4 (22. .. Re8 23. a4) 23. f5 bxc3 24. bxc3 (24. fxe6
  22. Bxd4 25. exd7 Rf8 26. Bxd4 Nxd4 27. bxc3 Ne6 28. c4 Rad8 29. cxd5 Rxd7 30.
  23. Qa4 Rfd8 31. dxe6 Qxe6 32. Qa5 Qb6 33. Qe1 Re7 34. Rc6 Qd4 35. e6 Rf8 36.
  24. Rxf7 Rfxf7 37. exf7+ Rxf7 38. g5 Kg7 39. Re6 Rd7 40. Bc6 Rd8 41. Re7+ Kh8
  25. 42. Bf3 h5 43. gxh6 Rd7 44. Bg2 Rxe7 45. Qxe7 a6 46. a3 a5 47. h4 Qa1+ 48.
  26. Kh2 Qb2 49. Kg3 Qb8+ 50. Kf3 Qb2 51. Bh1 Qc3+ 52. Kg4 Qc8+ 53. Kg3 Qb8+ 54.
  27. Kf3) 24. .. Ncxe5 25. fxe6 fxe6 26. Nxe6 Bxg1 27. Rxg1
  28. (27. Qxd5 Bf2 28. Nc7+ Kh8 29. Nxa8 Qe3 30. Rcd1 Bh4 31. c4
  29. Nf6 32. Qb7 Rg8 33. Nc7 Nfxg4 34. hxg4 Qh6 35. Bh3 Bd8 36. Kg2 Qg7 37. Rxd8
  30. Rxd8 38. Qxa7 h6 39. Qb6 Nxc4 40. Qc5 Rc8 41. Qxc4 Rxc7 42. Qf4 Ra7 43. Rf2
  31. Kh7 44. Kh2 Qc7 45. Qxc7+ Rxc7 46. a4 Ra7 47. Rf4 h5 48. gxh5 gxh5 49. Bf1 Ra5
  32. 50. Bb5 Ra7 51. Rf5 Kg7 52. Rxh5 Kg6 53. Be8+ Kg7 54. a5 Ra6 55. Ba4 Rd6
  33. 56. Bb5 Rd2+ 57. Kg3 Ra2 58. a6 Ra1 59. Bc4 Kg6 60. Re5 Ra3+ 61. Kf4 Ra4
  34. 62. Rc5 Ra3 63. Rc6+ Kg7 64. Bd5 Ra1 65. Ke5 Ra5 66. Rd6 Ra4 67. Rd7+ Kh8
  35. 68. Be6 Ra3 69. Kf6 Rxa6 70. Rd5 Rxe6+ 71. Kxe6 Kg7 72. Rg5+ Kh6 73. Kf6 Kh7
  36. 74. Rf5 Kh6 75. Kf7 Kh7 76. Rh5#) 27. .. Kh8 28. Qxd5 Rab8 29. Rge1 Qb2
  37. 30. c4 Rb6 31. c5 Rbc6 32. Rcd1 h6 33. Nf4 Rf6 34. Nd3 Nxd3 35. Qxd7 Nf2+
  38. 36. Kg1 Rcf8 37. Qd2 1-0
  39. [/pgn]
  40.  
  41. [code]
  42. D=27, 8 231 MN, Komodo 9.3
  43. +0,48 22. ... Re8 23.a4 a6 24.b4 Bxd4 25.a5 Qb7 (+0.64 @ D=31)
  44. +0,63 22. ... Rab8 23.f5 Ncxe5 24.fxe6 fxe6 25.Nxe6 Bxg1
  45. +0,80 22. ... Nxd4 23.cxd4 Be7 24.Qd2 Rxc1 25.Rxc1 Qd8
  46. +0,89 22. ... Bxd4 23.cxd4 Ne7 24.Qd2 f5 25.Bf2 Rf8
  47. +0,90 22. ... Rf8 23.Qd2 Rae8 24.b3 Bxd4 25.cxd4 Ne7
  48. +0,96 22. ... Rc7 23.f5 Re8 24.b4 Bxd4 25.cxd4 Ne7
  49. +0,97 22. ... Ne7 23.f5 Bxd4 24.fxe6 fxe6 25.cxd4 Rxc1
  50. +0,99 22. ... Qb7 23.f5 Nxd4 24.cxd4 Be7 25.Rxc8+ Qxc8
  51. +1,12 22. ... Kh8 23.f5 Rab8 24.Qd2 Rg8 25.fxe6 fxe6
  52. +1,19 22. ... Qb8 23.f5 Nxd4 24.cxd4 Be7 25.h4 Rxc1
  53. +1,24 22. ... Qd8 23.Nxb5 Bxg1 24.Rxg1 g5 25.Nd6 gxf4
  54. +1,37 22. ... Nd8 23.f5 Qa6 24.Qd2 Rab8 25.Qf4 Bf8
  55. +1,42 22. ... a5 23.f5 Bxd4 24.cxd4 Ne7 25.f6 Nc6
  56. +1,45 22. ... a6 23.f5 Bxd4 24.cxd4 Qd8 25.Qd2 Rc7
  57. +1,49 22. ... Qa6 23.f5 Nxd4 24.cxd4 Be7 25.Qf3 Rxc1
  58. +1,53 22. ... b4 23.f5 Bxd4 24.cxd4 Qd8 25.Be3 Na5 <---- Shankland
  59. +1,59 22. ... Kg7 23.f5 Bxd4 24.cxd4 Qd8 25.Qd2 Rc7
  60. +1,73 22. ... Nf8 23.f5 Bxd4 24.cxd4 Qd8 25.Rc5 Nd7
  61.  
  62. D=22, 697 MN
  63. +1,42 23. ... Ndxe5 24.fxe6 fxe6 25.Qe2 Re8 26.Nxe6 Bxg1
  64. +1,45 23. ... Bxd4 24.cxd4 Ne7 25.f6 Nc6 26.Qd2 Kh8
  65. +1,70 23. ... Ncxe5 24.fxe6 fxe6 25.Nxe6 Bxg1 26.Qxd5 Be3
  66. +1,77 23. ... Nxd4 24.cxd4 Be7 25.Rxc8+ Rxc8 26.Qf3 Rf8
  67. +2,02 23. ... Kh8 24.fxe6 fxe6 25.Nxe6 Bxg1 26.Rxg1 Ncxe5
  68. +2,27 23. ... Ne7 24.c4 exf5 25.cxd5 Bxd4 26.Qxd4 Rxc1
  69. +2,65 23. ... bxc3 24.fxe6 Bxd4 25.exd7 Rf8 26.Rxc3 Bxg1 <---- Shankland (estimated +M54)
  70. +2,73 23. ... Nf8 24.fxe6 fxe6 25.Nxe6 Nxe6 26.Bxd5 Kh8
  71. +2,89 23. ... Nd8 24.fxe6 fxe6 25.c4 Nxe5 26.cxd5 Bxd4
  72. +3,06 23. ... gxf5 24.gxf5 Ncxe5 25.fxe6 fxe6 26.Nxe6 Bxg1
  73. +3,36 23. ... Re8 24.fxe6 fxe6 25.Nxe6 Rxe6 26.Bxd5 Ncxe5
  74. +3,99 23. ... exf5 24.Nxc6 Rxc6 25.Qxd5 Bxg1 26.Qxc6 Rd8
  75.  
  76. D=23, 160 MN
  77. +2,88 24.fxe6 Bxd4 25.exd7 Rf8 26.Bxd4 Nxd4 27.bxc3 Ne6 (+3.80 @ D=40, estimated +M53)
  78. +0,93 24.bxc3 Bxd4 25.cxd4 Qb4 26.Rc2 Nd8 27.fxe6 fxe6 <---- Nakamura (+0.94 @ D=25)
  79.  
  80. D=24, 1 067 MN
  81. +0,94 24. ... Bxd4 25.cxd4 Qb4 26.Rc2 Nb6 27.fxe6 fxe6
  82. +1,30 24. ... Nxd4 25.cxd4 Bb4 26.Rxc8+ Rxc8 27.a3 Be7
  83. +1,59 24. ... Ncxe5 25.fxe6 fxe6 26.Nxe6 Bxg1 27.Qxd5 Be3 <---- Shankland (estimated +M53)
  84. +2,05 24. ... Kh8 25.fxe6 fxe6 26.Nxe6 Bxg1 27.Qxd5 Ncxe5
  85. +2,35 24. ... Ne7 25.Qd2 Bxd4 26.Bxd4 Qd8 27.c4 Nc6
  86.  
  87. D=28, 440 MN
  88. +1,98 27.Qxd5 Bf2 28.Nc7+ Kh8 29.Nxa8 Qe3 30.Rcd1 Bh4 (+2.23 @ D=30, estimated +M50)
  89. +1,52 27.Rxg1 Nf6 28.Nf4 Rab8 29.g5 Nfd7 30.Bxd5+ Kh8 <---- Nakamura
  90.  
  91. D=25, 648 MN
  92. +1,49 27. ... Nf6 28.Nf4 Rd8 29.Nxd5 Nxd5 30.Bxd5+ Kh8
  93. +1,59 27. ... Qd6 28.c4 Nb6 29.cxd5 Rxc1 30.Qxc1 Rc8
  94. +1,76 27. ... Rab8 28.Qxd5 Qc6 29.Qd2 Qb6 30.Bd5 Qd6
  95. +2,23 27. ... Kh8 28.Qxd5 Rab8 29.Rce1 Qb5 30.Qd6 Rg8 <---- Shankland (+2.54 @ D=36)
  96. +2,66 27. ... Qe3 28.Qxd5 Nb6 29.Qb3 Nec4 30.Rce1 Qd2
  97.  
  98. D=32, 1 680 MN
  99. +2,54 29. ... Qb5 30.Qd6 Rg8 31.Qd4 Qb6 32.Rxe5 Qxd4
  100. +3,49 29. ... Qb2 30.c4 Rc6 31.c5 Rbc8 32.g5 Re8 <---- Shankland (+3.70 @ D=38)
  101.  
  102. D=36, 65 028 MN
  103. +3,70 30. ... Rb6 31.c5 Rbc6 32.Rcd1 Qc3 33.Ng5 Rxc5 <---- Shankland
  104. +3,79 30. ... Rc6 31.c5 Re8 32.Ng5 Rcc8 33.Qd6 h6
  105. +4,50 30. ... Nb6 31.Qxe5+ Qxe5 32.Rxe5 Nxc4 33.Ree1 a5
  106.  
  107. D=25, 5 284 MN
  108. +3,59 32. ... Qc3 33.Ng5 Qxc5 34.Nf7+ Kg7 35.Nxe5 Qxd5
  109. +3,74 32. ... a5 33.Rd2 Qc3 34.Rde2 Rxc5 35.Nxc5 Rxc5
  110. +3,85 32. ... h6 33.Rd2 Qc3 34.Rde2 Rxc5 35.Nxc5 Qxc5 <---- Shankland
  111. +3,86 32. ... Re8 33.Ng5 Rf8 34.Rb1 Qc3 35.Rxe5 Qxe5
  112. +3,91 32. ... Rg8 33.Rd2 Qc3 34.Rde2 Ra6 35.Re3 Qb2
  113. +3,91 32. ... a6 33.Rd2 Qc3 34.Rde2 Rxc5 35.Nxc5 Qxc5
  114. +4,72 32. ... h5 33.gxh5 gxh5 34.Nf4 Nf6 35.Qxe5 Qxe5
  115. +5,55 32. ... g5 33.Nxg5 Rxc5 34.Qe6 Qb6 35.Rd6 Rc1
  116. [/code]
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