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問題 771884: 黒 が 終盤を勝つとするために

FM Singh Walia Namitbir (2339) - GM Raset Ziatdinov (2066)
Titled Tue 13th Sep Early chess.com INT (11), 2022.09.13
  2. 1.d4
  3. Nf6
  4. 2.c4
  5. e5
  6. 3.dxe5
  7. Ng4
  8. 4.Nf3
  9. Bc5
  10. 5.e3
  11. Nc6
  12. 6.b3
  13. O-O
  14. 7.Bb2
  15. Qe7
  16. 8.Be2
  17. Ngxe5
  18. 9.Nbd2
  19. Nxf3+
  20. 10.Nxf3
  21. Bb4+
  22. 11.Nd2
  23. Qg5
  24. 12.Bf3
  25. Ne5
  26. 13.O-O
  27. Bxd2
  28. 14.Bxe5
  29. Qxe5
  30. 15.Qxd2
  31. d6
  32. 16.Rad1
  33. Rb8
  34. 17.Qd4
  35. Qxd4
  36. 18.Rxd4
  37. Bf5
  38. 19.Be4
  39. Bxe4
  40. 20.Rxe4
  41. Rfe8
  42. 21.Rxe8+
  43. Rxe8
  44. 22.Rd1
  45. f5
  46. 23.Kf1
  47. Kf7
  48. 24.Ke2
  49. Re5
  50. 25.Kf3
  51. g5
  52. 26.h3
  53. h5
  54. 27.g4
  55. fxg4+
  56. 28.hxg4
  57. h4
  58. 29.Rd3
  59. Ra5
  60. 30.a4
  61. Re5
  62. 31.Rd4
  63. Ke6
  64. 32.Ke2
  65. c5
  66. 33.Rd3
  67. d5
  68. 34.cxd5+
  69. Rxd5
  70. 35.Rxd5
  71. Kxd5
  72. 36.f4
  73. gxf4
  74. 37.exf4
  75. Ke4
  76. 38.g5
  77. Kf5
  78. 39.Kf3
  79. b6
  80. 40.Kg2
  81. a6
  82. 41.Kh3
  83. b5
  84. 42.axb5
  85. axb5
  86. 43.Kxh4
  87. c4
  88. 44.bxc4
  89. bxc4
  90. 45.Kh5
    1. 解決策:45.Kh5
    2. c3
    3. 46.g6
      1. 46.Kh4
      2. c2
      3. 47.g6 with a winning endgame, for example:
      4. Kxf4
      5. 48.g7
      6. c1=Q
      1. 46.Kh6
      2. c2
      3. 47.Kh7 with a winning endgame, for example:
      4. Kxf4
      5. 48.g6
      6. c1=Q
    5. 46...c2
      1. 46...Kf6
      2. 47.Kh6
        1. 47.g7
        2. Kxg7
        3. 48.Kg5 with a winning endgame, for example:
        4. c2
        5. 49.Kg4
        6. c1=Q
        1. 47.f5
        2. c2
        3. 48.Kg4 with a winning endgame, for example:
        4. c1=Q
        5. 49.Kf3
        6. Kxf5
      4. 47...c2
      5. 48.g7
      6. c1=Q
        1. 48...c1=R
        2. 49.g8=N+
          1. 49.Kh5 with a winning endgame, for example:
          2. Kxg7
          3. 50.Kg4
          4. Kg6
          5. 51.f5+
          6. Kf6
          7. 52.Kf4
          8. Re1
          9. 53.Kg4
          10. Rf1
          11. 54.Kh3
          12. Rxf5
          1. 49.Kh7
          2. Rh1+
          3. 50.Kg8 with a winning endgame, for example:
          4. Rg1
          5. 51.Kf8
          6. Rxg7
          7. 52.Ke8
          8. Ke6
          9. 53.Kf8
          10. Rg2
          11. 54.Ke8
          12. Rg8#
        4. 49...Kf7
        5. 50.Kh5
          1. 50.Kg5
          2. Rg1+
          3. 51.Kh5
          4. Rxg8
          5. 52.Kh6 with a winning endgame, for example:
          6. Kf6
          7. 53.Kh5
          8. Kf5
          9. 54.Kh6
          10. Kxf4
          1. 50.Kh7
          2. Rh1+
          3. 51.Nh6+
          4. Kf6
          5. 52.f5 with a winning endgame, for example:
          6. Rh2
          7. 53.Kh8
          8. Rxh6+
          9. 54.Kg8
          10. Kxf5
        7. 50...Kxg8
        8. 51.Kg6 with a winning endgame, for example:
          1. 51.Kg4 with a winning endgame, for example:
          2. Re1
          3. 52.f5
          4. Rf1
          5. 53.Kg5
          6. Kf7
          7. 54.Kg4
          8. Kf6
          9. 55.Kh3
          10. Rxf5
        10. 51...Re1
        11. 52.f5
        12. Re3
        13. 53.Kf6
        14. Kf8
        15. 54.Kg5
        16. Kf7
        17. 55.f6
        18. Rf3
        19. 56.Kg4
        20. Rxf6
      8. 49.g8=N+
        1. 49.Kh5 with a winning endgame, for example:
        2. Qxf4
        1. 49.g8=Q
        2. Qh1#
      10. 49...Ke6
        1. 49...Kf5
        2. 50.Ne7+ with a winning endgame, for example:
        3. Kxf4
        1. 49...Kf7
        2. 50.Kg5
          1. 50.Kh5
          2. Kxg8
          1. 50.Kh7 with a winning endgame, for example:
          2. Qxf4
        4. 50...Kxg8
      12. 50.Kh5
        1. 50.Kg6
        2. Qxf4
        1. 50.Kg7
        2. Qxf4
      14. 50...Qxf4
    7. 47.g7
      1. 47.Kh4 with a winning endgame, for example:
      2. Kxf4
      3. 48.g7
      4. c1=Q
      1. 47.Kh6
      2. c1=Q
      3. 48.Kh7
      4. Qxf4
    9. 47...c1=Q
      1. 47...c1=R
      2. 48.g8=Q
        1. 48.Kh4
        2. Rg1
        3. 49.Kh3
        4. Rxg7
        5. 50.Kh4
        6. Rg8
        7. 51.Kh3
        8. Kxf4
        1. 48.g8=N
        2. Rh1#
        1. 48.g8=R
        2. Rh1#
      4. 48...Rh1#
    11. 48.g8=Q
      1. 48.Kh4
      2. Qxf4+
      1. 48.Kh6
      2. Qh1#
      1. 48.g8=R with a winning endgame, for example:
      2. Kxf4
    13. 48...Qh1#
  92. 45...c3
  93. 46.g6
  94. c2
  95. 47.g7
  96. c1=Q
  97. 48.Kh6
  98. Qh1#
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