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Hikaru Nakamura - Jeffery Xiong

Apr 25th, 2016
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  1. [pgn]
  2. [Event "US Chess Championships"]
  3. [Site "Saint Louis USA"]
  4. [Date "2016.04.24"]
  5. [EventDate "2016.04.13"]
  6. [Round "10"]
  7. [Result "1-0"]
  8. [White "Hikaru Nakamura"]
  9. [Black "Jeffery Xiong"]
  10. [ECO "D70"]
  11. [WhiteElo "2787"]
  12. [BlackElo "2618"]
  13. [PlyCount "67"]
  14.  
  15. 1. d4 Nf6 2. c4 g6 3. f3 Nc6 4. d5 Ne5 5. e4 d6 6. Nc3 Bg7 7. Be2 O-O 8. f4
  16. Ned7 9. Be3 e6 10. dxe6 fxe6 11. Nh3 Qe7 12. O-O b6 13. Bf3 Rb8 14. Qc2 Bb7
  17. 15. Rae1 Kh8 16. Ng5 Bh6 17. Nb5 Bxg5 (17. .. e5 18. Nxc7 exf4 19. Bxf4 Ne5
  18. 20. Nce6 Bxg5 21. Nxg5) 18. fxg5 Ne8 19. Nxa7 Ne5 (19. .. c6 20. Qb3 Ra8
  19. 21. Bxb6 c5 22. a4 Qxg5 23. a5 Qe5 24. Rd1) 20. Be2 Rxf1+ 21. Rxf1 Ra8 22.
  20. Nb5 Rxa2 23. Na3 Qg7 24. Bd2 Nc6 25. Bc3 Nd4 26. Bd3 Kg8 27. Qf2 (27. Qd1
  21. c5 28. Rf2 e5 29. Bxd4 exd4 30. Qb1 Rxa3 31. bxa3 Bc6 32. Qxb6 Qc7 33. Qxc7
  22. Nxc7 34. h4 Kg7 35. Kf1 Kg8 36. g3 Bd7 37. Rb2 Ne6 38. Rb7 Nf8 39. Ke2 Bg4+
  23. 40. Kd2 Bd7 41. Ra7 Kf7 42. a4 Ke7 43. a5 Ne6 44. a6 Kd8 45. Rb7 Bc8 46.
  24. Rb8 Kc7 47. a7 Bb7 48. a8=Q Bxa8 49. Rxa8 Kd7 50. Rh8 Kc6 51. Rxh7 Kb6 52.
  25. Re7 Nf8 53. Rg7 Kc6 54. Rg8 Nd7 55. Rxg6 Ne5 56. h5 Kb6 57. Rg7 Nf3+ 58.
  26. Kd1 Ka5 59. h6 Kb4 60. h7 Kc3 61. h8=Q Kxd3 62. Qh5 Kxe4 63. Re7+ Ne5 64.
  27. g6 Kd3 65. Qe2+ Kc3 66. Qc2+ Kb4 67. Rb7+ Ka3 68. Qb3#) 27. .. c5 28. Bb1
  28. Ra1 29. Nc2 Rxb1 30. Rxb1 Bxe4 31. Nxd4 Bxb1 32. Nf5 exf5 33. Bxg7 Kxg7 34.
  29. Qe3 1-0
  30. [/pgn]
  31.  
  32. [code]
  33. D=25, 1 245 MN
  34. +0,38 17. ... e5 18.Nxc7 exf4 19.Bxf4 Ne5 20.Nce6 Bxg5 (+0,50 @ D=29)
  35. +0,66 17. ... Ne8 18.h4 c6 19.Nc3 Bg7 20.Bg4 Nc7
  36. +0,74 17. ... a6 18.Nxc7 Bxg5 19.fxg5 Nh5 20.Bd4+ Ng7
  37. +0,79 17. ... Bxg5 18.fxg5 Ne8 19.Nxa7 c6 20.Qb3 Ra8 <---- Xiong
  38.  
  39. D=27, 2 967 MN
  40. +0,70 19. ... c6 20.Qb3 Ra8 21.Bxb6 c5 22.a4 Qxg5 (+0,85 @ D=34)
  41. +1,56 19. ... c5 20.Nb5 Ne5 21.Be2 Rxf1+ 22.Rxf1 Nc6
  42. +1,56 19. ... Ne5 20.Be2 Ng7 21.Nb5 Kg8 22.Rd1 Rxf1+ <---- Xiong
  43. +1,57 19. ... Kg8 20.Nb5 Ne5 21.Be2 Ng7 22.Nc3 Rf7
  44. +1,59 19. ... Ng7 20.Nb5 Ne5 21.Be2 Kg8 22.Nc3 Rf7
  45. +1,62 19. ... e5 20.Nb5 Nc5 21.Nc3 Ne6 22.Bg4 Rxf1+
  46. +1,63 19. ... Ra8 20.Nb5 Kg8 21.b3 Ne5 22.Be2 Ng7
  47. +1,66 19. ... Rd8 20.Nb5 Ne5 21.Be2 Ng7 22.b4 c6
  48.  
  49. D=24, 1 690 MN
  50. +1,67 22. ... Kg8 23.b4 c5 24.h4 Nc6 25.bxc5 bxc5
  51. +1,73 22. ... c5 23.Nc3 Ng7 24.Qd2 Rd8 25.b3 Kg8
  52. +1,80 22. ... Rd8 23.b4 c6 24.Nc3 c5 25.Qb1 Qg7
  53. +1,82 22. ... Kg7 23.b4 c6 24.Nc3 c5 25.Qb2 Kg8
  54. +1,89 22. ... Nf7 23.h4 Kg8 24.a3 Rd8 25.Bd4 Ne5
  55. +1,90 22. ... c6 23.Nc3 c5 24.Qb3 Qd8 25.h4 Ng7
  56. +1,91 22. ... Rb8 23.b4 Kg8 24.Bf4 Ra8 25.h4 Nc6
  57. +1,93 22. ... Nd7 23.b3 Kg8 24.h4 Ne5 25.Bd4 Nd7
  58. +1,94 22. ... Rc8 23.h4 Kg8 24.Bf4 Nf7 25.Bg3 Ng7
  59. +1,94 22. ... Nc6 23.a3 Ne5 24.h4 Kg8 25.Bd4 Rd8
  60. +1,96 22. ... Qg7 23.a3 Kg8 24.h4 Qe7 25.Bd4 Rd8
  61. +1,99 22. ... Ra6 23.b4 c5 24.a3 Kg8 25.h4 Ra8
  62. +2,00 22. ... Ba6 23.Bd4 Kg8 24.h4 c6 25.Na3 Nd7
  63. +2,05 22. ... Ng7 23.Bd4 Kg8 24.h4 Rf8 25.Qc3 Rxf1+
  64. +2,07 22. ... Bc6 23.b4 Kg8 24.h4 Ng7 25.Bd4 Nh5
  65. +2,11 22. ... Bc8 23.b4 Nd7 24.h4 Bb7 25.Bg4 c6
  66. +2,14 22. ... Rxa2 23.Na3 Kg8 24.Qb3 Rxa3 25.Qxa3 Bxe4 <---- Xiong
  67. +2,17 22. ... Qd7 23.Bd4 Qg7 24.Bg4 Qe7 25.b4 Qxg5
  68.  
  69. D=27, 857 MN
  70. +3,85 27.Qd1 c5 28.Rf2 Qc7 29.Bxd4 cxd4 30.Qb1 Rxa3 (+5,02 @ D=35, estimated +M42)
  71. +3,52 27.Qb1 Bxe4 28.Qxa2 Bxd3 29.Re1 c5 30.Nb5 h5
  72. +3,41 27.Qc1 Bxe4 28.Qe3 Bxd3 29.Bxd4 e5 30.Qxd3 exd4
  73. +2,93 27.Qa4 Bc6 28.Qd1 Rxa3 29.bxa3 Ne2+ 30.Qxe2 Qxc3
  74. +2,46 27.Qd2 c5 28.Kh1 e5 29.Qd1 Bc6 30.Qb1 Rxa3
  75. +2,06 27.Qf2 c5 28.Bb1 Ra1 29.Nc2 Rxb1 30.Rxb1 e5 <---- Nakamura (+2,12 @ D=35)
  76.  
  77. D=28, 4 150 MN
  78. +2,12 30. ... e5 31.Re1 Qe7 32.h4 Kg7 33.Nxd4 cxd4
  79. +4,09 30. ... Bxe4 31.Nxd4 cxd4 32.Bxd4 Qf7 33.Qxf7+ Kxf7 <---- Xiong
  80. +4,10 30. ... Qf7 31.Qxf7+ Kxf7 32.Nxd4 cxd4 33.Bxd4 Bxe4
  81. +4,30 30. ... Qf8 31.Qxf8+ Kxf8 32.Rf1+ Ke7 33.Nxd4 cxd4
  82.  
  83. D=31, 3 321 MN
  84. +4,32 31. ... cxd4 32.Bxd4 e5 33.Re1 Qb7 34.Rf1 Qe7
  85. +5,68 31. ... Qf7 32.Qxf7+ Kxf7 33.Rf1+ Ke7 34.Nb5 Bd3
  86. +6,20 31. ... Bxb1 32.Nf5 exf5 33.Bxg7 Kxg7 34.Qf3 Kf8 <---- Xiong
  87. +6,47 31. ... e5 32.Nc2 Bd3 33.b3 h5 34.Rd1 Be4
  88. [/code]
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