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問題 119760: 黒 が 終盤で引き分けとするために

Jackson Whipps Showalter - Dawid Markelowicz Janowski
Lexington m Lexington (6), 1916
  2. 1.d4
  3. d5
  4. 2.Nf3
  5. Nf6
  6. 3.c4
  7. dxc4
  8. 4.e3
  9. a6
  10. 5.Bxc4
  11. e6
  12. 6.O-O
  13. Be7
  14. 7.Nc3
  15. b5
  16. 8.Bd3
  17. Bb7
  18. 9.a3
  19. c5
  20. 10.dxc5
  21. Bxc5
  22. 11.Qe2
  23. Nbd7
  24. 12.Rd1
  25. O-O
  26. 13.b4
  27. Ba7
  28. 14.Bb2
  29. Qe7
  30. 15.Rac1
  31. Rac8
  32. 16.h3
  33. Rfd8
  34. 17.Bb1
  35. Nb6
  36. 18.Nd2
  37. Bb8
  38. 19.Nde4
  39. Nxe4
  40. 20.Nxe4
  41. Rxc1
  42. 21.Rxc1
  43. Bxe4
  44. 22.Bxe4
  45. Nc4
  46. 23.Bc3
  47. f5
  48. 24.Bf3
  49. Nxa3
  50. 25.Qa2
  51. Nc4
  52. 26.Qxa6
  53. Qd6
  54. 27.Qxd6
  55. Rxd6
  56. 28.Ra1
  57. Rd3
  58. 29.Ra8
  59. Rd8
  60. 30.g4
  61. fxg4
  62. 31.hxg4
  63. Bc7
  64. 32.Rxd8+
  65. Bxd8
  66. 33.Bc6
  67. Bf6
  68. 34.Bxf6
  69. gxf6
  70. 35.Bxb5
  71. Nb6
  72. 36.e4
  73. e5
  74. 37.f4
  75. Kf7
  76. 38.Kf2
  77. Kg6
  78. 39.Be8+
  79. Kg7
  80. 40.fxe5
  81. fxe5
  82. 41.g5
  83. Nc4
  84. 42.Kg3
  85. h6
  86. 43.gxh6+
  87. Kxh6
  88. 44.Kg4
  89. Nd6
  90. 45.Bh5
  91. Kg7
  92. 46.Kg5
  93. Nxe4+
  94. 47.Kf5
  95. Ng3+
  96. 48.Kxe5
  97. Nxh5
  98. 49.b5
  99. Kf7
  100. 50.Kd6
  101. Nf6
  102. 51.b6
    1. 解決策:51.b6
    2. Ke8
    3. 52.b7
      1. 52.Kc6 with a drawn endgame, for example:
      2. Ke7
      3. 53.Kb5
      4. Kd8
      5. 54.Kc6
      6. Kc8
      7. 55.b7+
      8. Kb8
      9. 56.Kc5
      10. Kxb7
      1. 52.Kc7 with a drawn endgame, for example:
      2. Nd5+
      3. 53.Kd6
      4. Nxb6
    5. 52...Nd7
    6. 53.Ke6 with a drawn endgame, for example:
      1. 53.Kc6 with a drawn endgame, for example:
      2. Ke7
      3. 54.Kd5
      4. Nb8
      5. 55.Kc5
      6. Kd7
      7. 56.Kd5
      8. Ke7
      9. 57.Kc5
      10. Kd7
      11. 58.Kd5
      12. Ke7
      1. 53.Kc7
      2. Ke7
      3. 54.b8=Q
      4. Nxb8
    8. 53...Nf8+
    9. 54.Kd6
    10. Nd7
    11. 55.Ke6
    12. Nf8+
    13. 56.Kd6
    14. Nd7
  104. 51...Ke8
1/2-1/2

This puzzle is part of the following Puzzle Academy skills:
  • Knight versus Pawn: Drawing against knight pawn
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