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問題 951702: 黒 が 引き分けとするために

FM Serhan Berat Ozdemir (2191) - CM Vuppala Prraneeth (2253)
Titled Tuesday 4th May chess.com INT (11), 2021.05.04
  2. 1.e4
  3. e5
  4. 2.Nf3
  5. Nc6
  6. 3.d4
  7. exd4
  8. 4.Bc4
  9. d6
  10. 5.Nxd4
  11. Nxd4
  12. 6.Qxd4
  13. Qf6
  14. 7.Qxf6
  15. Nxf6
  16. 8.Nc3
  17. Be6
  18. 9.Bb3
  19. Be7
  20. 10.f4
  21. O-O-O
  22. 11.O-O
  23. a6
  24. 12.h3
  25. Bxb3
  26. 13.axb3
  27. Rhe8
  28. 14.Be3
  29. Bf8
  30. 15.Bd4
  31. Nxe4
  32. 16.Rae1
  33. Nxc3
  34. 17.Bxc3
  35. d5
  36. 18.Kf2
  37. g6
  38. 19.Bf6
  39. Bc5+
  40. 20.Kf3
  41. Rxe1
  42. 21.Rxe1
  43. Rd6
  44. 22.Re8+
  45. Kd7
  46. 23.Re7+
  47. Kc6
  48. 24.Rxf7
  49. Re6
  50. 25.Be5
  51. Bd6
  52. 26.Bxd6
  53. Kxd6
  54. 27.Rxh7
  55. d4
  56. 28.Rg7
  57. b5
  58. 29.h4
  59. c5
  60. 30.g4
  61. c4
  62. 31.bxc4
  63. bxc4
  64. 32.Rb7
  65. Kd5
  66. 33.h5
  67. Re3+
  68. 34.Kf2
  69. gxh5
  70. 35.gxh5
  71. Rh3
  72. 36.Rh7
  73. Rh2+
  74. 37.Kg3
  75. Rxc2
  76. 38.Rd7+
  77. Ke4
  78. 39.Re7+
  79. Kd3
  80. 40.Rb7
  81. Rc1
  82. 41.h6
  83. Rh1
  84. 42.h7
  85. Kc2
  86. 43.Kg2
  87. Rh6
  88. 44.Rc7
  89. d3
  90. 45.Rxc4+
  91. Kxb2
  92. 46.Kf3
  93. Rxh7
  94. 47.Ke3
  95. Rd7
  96. 48.Kd2
  97. a5
  98. 49.f5
  99. Ra7
  100. 50.f6
  101. a4
  102. 51.Rb4+
  103. Ka3
  104. 52.Rf4
  105. Kb3
  106. 53.f7
  107. Rxf7
  108. 54.Rxf7
  109. a3
  110. 55.Kxd3
  111. Kb2
  112. 56.Rb7+
    1. 解決策:56.Rb7+
    2. Kc1
    3. 57.Ra7
    4. Kb2
    5. 58.Rb7+
      1. 58.Kd2
      2. a2
      3. 59.Kd3 with a drawn endgame, for example:
      4. a1=Q
      5. 60.Rxa1
      6. Kxa1
    7. 58...Kc1
    8. 59.Ra7
    9. Kb2
    10. 60.Kd2
    11. a2
    12. 61.Rb7+
      1. 61.Kd1 with a drawn endgame, for example:
      2. a1=Q+
      3. 62.Rxa1
      4. Kxa1
    14. 61...Ka1
    15. 62.Rc7
      1. 62.Ra7
      2. Kb1
      3. 63.Kc3
      4. a1=Q+
      5. 64.Rxa1+
      6. Kxa1
      1. 62.Rd7
      2. Kb2
      3. 63.Ra7 with a drawn endgame, for example:
      4. a1=R
      5. 64.Rb7+
    17. 62...Kb2
      1. 62...Kb1
      2. 63.Rc1+
        1. 63.Rb7+
        2. Ka1
        3. 64.Rc7
        4. Kb1 反復による引き分け
      4. 63...Kb2
      5. 64.Rc2+ with a drawn endgame, for example:
      6. Kb1
      7. 65.Rc8
      8. a1=Q
      9. 66.Rc1+
    19. 63.Rb7+
      1. 63.Rc2+ with a drawn endgame, for example:
      2. Kb1
      3. 64.Rc8
      4. a1=Q
      5. 65.Rc1+
    21. 63...Ka1
    22. 64.Rc7
      1. 64.Ra7
      2. Kb1
      3. 65.Kc3
      4. a1=Q+
      5. 66.Rxa1+
      6. Kxa1
      1. 64.Rd7
      2. Kb2
      3. 65.Ra7 with a drawn endgame, for example:
      4. a1=R
      5. 66.Rb7+
    24. 64...Kb2
      1. 64...Kb1
      2. 65.Rc1+
        1. 65.Rb7+
        2. Ka1 反復による引き分け
      4. 65...Kb2
      5. 66.Rc2+ with a drawn endgame, for example:
      6. Kb1
      7. 67.Rc8
      8. a1=Q
      9. 68.Rc1+
    26. 65.Rc2+ with a drawn endgame, for example:
    27. Kb1
    28. 66.Rc8
    29. a1=Q
    30. 67.Rc1+
  114. 56...Kc1
  115. 57.Ra7
  116. Kb2
  117. 58.Rb7+
  118. Kc1
  119. 59.Ra7
  120. Kb2
  121. 60.Rb7+
1/2-1/2
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