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問題 990641: 白 が 終盤を勝つとするために

Olexandr Prohorov (2086) - CM Chris Briscoe (2192)
Titled Tue 22nd Feb Late chess.com INT (9), 2022.02.22
  2. 1.e4
  3. c5
  4. 2.c3
  5. d5
  6. 3.exd5
  7. Qxd5
  8. 4.d4
  9. Nc6
  10. 5.Nf3
  11. Bg4
  12. 6.Be2
  13. cxd4
  14. 7.cxd4
  15. e6
  16. 8.Nc3
  17. Bb4
  18. 9.O-O
  19. Bxc3
  20. 10.bxc3
  21. Nge7
  22. 11.Be3
  23. O-O
  24. 12.h3
  25. Bf5
  26. 13.c4
  27. Qd7
  28. 14.Qb3
  29. Na5
  30. 15.Qa3
  31. b6
  32. 16.Rac1
  33. Rac8
  34. 17.Rfd1
  35. Rfd8
  36. 18.Ne5
  37. Qe8
  38. 19.g4
  39. Be4
  40. 20.f3
  41. Ba8
  42. 21.Bf2
  43. Nec6
  44. 22.c5
  45. Nxe5
  46. 23.dxe5
  47. Rxd1+
  48. 24.Rxd1
  49. Nc6
  50. 25.cxb6
  51. axb6
  52. 26.Bb5
  53. Qe7
  54. 27.Qxe7
  55. Nxe7
  56. 28.Bxb6
  57. Bxf3
  58. 29.Rd8+
  59. Rxd8
  60. 30.Bxd8
  61. Ng6
  62. 31.Bc7
  63. h5
  64. 32.gxh5
  65. Bxh5
  66. 33.a4
  67. Bf3
  68. 34.Kf2
  69. Ba8
  70. 35.a5
  71. Nf4
  72. 36.h4
  73. Kh7
  74. 37.Kg3
  75. Nd5
  76. 38.Bd8
  77. Kg6
  78. 39.Kg4
  79. f5+
  80. 40.exf6
  81. gxf6
  82. 41.h5+
  83. Kg7
  84. 42.Bd3
  85. e5
  86. 43.Kf5
  87. Bb7
  88. 44.h6+
  89. Kxh6
  90. 45.Be2
  91. Bc8+
  92. 46.Ke4
  93. Nb4
  94. 47.Bxf6
  95. Kg6
  96. 48.Bxe5
  97. Nc6
  98. 49.Bc7
  99. Kf6
  100. 50.Kd5
  101. Nb4+
  102. 51.Kc5
  103. Na6+
  104. 52.Kb6
  105. Nxc7
  106. 53.Kxc7
  107. Bf5
  108. 54.Bb5
  109. Be4
  110. 55.Bc6
  111. Bd3
  112. 56.Kb6
  113. Ke5
    1. 解決策:56...Ke5
    2. 57.Bb5
    3. Bxb5
      1. 57...Be4 with a winning endgame, for example:
      2. 58.a6
      3. Kd6
      4. 59.a7
      5. Bd5
      6. 60.Ba6
      7. Ba8
      8. 61.Bb7
      9. Bxb7
      10. 62.Kxb7
      11. Kd7
      12. 63.a8=Q
      1. 57...Bc2 with a winning endgame, for example:
      2. 58.a6
      3. Kd6
      4. 59.Bc6
      5. Bd3
      6. 60.a7
      7. Bc4
      8. 61.a8=Q
      1. 57...Bh7 with a winning endgame, for example:
      2. 58.a6
      3. Kd6
      4. 59.Bc6
      5. Bd3
      6. 60.a7
      7. Bc4
      8. 61.a8=Q
    5. 58.Kxb5 白のキングが、マス a6を守っていた黒のビショップを取ります。
    6. Kd6
      1. 58...Kd4 with a winning endgame, for example:
      2. 59.a6
      3. Kd5
      4. 60.a7
      5. Kd6
      6. 61.a8=Q
    8. 59.Kb6
    9. Kd7
      1. 59...Kd5 with a winning endgame, for example:
      2. 60.a6
      3. Kd6
      4. 61.a7
      5. Kd7
      6. 62.a8=Q
    11. 60.a6
      1. 60.Kb7
      2. Kd6
      3. 61.a6
        1. 61.Kb6
        2. Kd7
        1. 61.Kb8
        2. Kc6
          1. 61...Kc5
          2. 62.a6
          3. Kb6
          4. 63.a7
          5. Ka6
          6. 64.a8=Q+
          1. 61...Kd7
          2. 62.a6
          3. Kc6
          4. 63.a7
          5. Kb6
          6. 64.a8=Q
        4. 62.a6
        5. Kb6
        6. 63.a7
        7. Ka6
        8. 64.a8=Q+
          1. 64.a8=R+
      5. 61...Kc5 with a winning endgame, for example:
        1. 61...Kd7
        2. 62.a7
        3. Kd8
        4. 63.a8=Q+
      7. 62.a7
      8. Kb5
      9. 63.a8=Q
    13. 60...Kc8
      1. 60...Kd6
      2. 61.a7
      3. Kd7
      4. 62.a8=Q
    15. 61.a7
    16. Kd7
      1. 61...Kd8
      2. 62.a8=Q+
    18. 62.a8=Q
      1. 62.a8=R
  115. 57.Bb5
  116. Be4
  117. 58.a6
  118. Kd6
  119. 59.Be2
  120. Kd7
  121. 60.Bg4+
  122. Kd6
  123. 61.Bc8
  124. Ke7
  125. 62.Bb7
1-0
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