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問題 891292: 黒 が get a winning advantageとするために

IM H. Grooten (2374) - Onno Elgersma (2171)
22nd HZ Open 2018 Vlissingen NED, 2018.08.06
  2. 1.d4
  3. Nf6
  4. 2.c4
  5. e6
  6. 3.Nf3
  7. Bb4+
  8. 4.Nbd2
  9. b6
  10. 5.a3
  11. Bxd2+
  12. 6.Qxd2
  13. Bb7
  14. 7.e3
  15. O-O
  16. 8.Be2
  17. d6
  18. 9.O-O
  19. a5
  20. 10.b3
  21. Nbd7
  22. 11.Bb2
  23. Qe7
  24. 12.Qc2
  25. c5
  26. 13.Nd2
  27. Rfd8
  28. 14.f4
  29. Rac8
  30. 15.Rae1
  31. d5
  32. 16.Bd3
  33. b5
  34. 17.Qb1
  35. bxc4
  36. 18.bxc4
  37. Ba6
  38. 19.cxd5
  39. c4
  40. 20.d6
    1. 解決策:20.d6
    2. Qxd6
    3. 21.Be2
    4. c3 黒のポーンが白のビショップ と ナイトを両取りします。
    5. 22.Bxa6
    6. Qxa6
      1. 22...cxd2
      2. 23.Bxc8
      3. dxe1=Q
        1. 23...dxe1=R
        2. 24.Qxe1
        3. Rxc8 Black is winning because of Black's material advantage.
      5. 24.Qxe1
      6. Rxc8 Black is winning because of Black's material advantage.
    8. 23.Rf2
    9. Rb8 Black is winning because of Black's piece activity and passed pawn(s).
      1. 23...cxb2
      1. 23...cxd2
  42. 20...Qxd6
  43. 21.Ne4
  44. Nxe4
  45. 22.Bxe4
  46. f5
  47. 23.Bf3
  48. c3
  49. 24.Bc1
  50. Bxf1
  51. 25.Rxf1
  52. Nf6
  53. 26.Qb5
  54. Nd5
  55. 27.Qxa5
  56. Qc6
  57. 28.g4
  58. fxg4
  59. 29.Bxg4
  60. Ra8
  61. 30.Qc5
  62. Qa6
  63. 31.a4
  64. Rdc8
  65. 32.Qb5
  66. Qxb5
  67. 33.Bxe6+
  68. Kf8
  69. 34.axb5
  70. Rd8
  71. 35.Kf2
  72. Ra1
  73. 36.Ke2
  74. Ke7
  75. 37.f5
  76. Nf6
  77. 38.Kd3
  78. Rb8
  79. 39.Bc4
  80. Rc8
  81. 40.e4
  82. Ra4
  83. 41.Bb3
  84. Ra5
  85. 42.Rg1
  86. Ne8
  87. 43.Bc4
  88. c2
  89. 44.e5
  90. Kf8
  91. 45.Rg2
  92. Rc7
  93. 46.Rxc2
1-0
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