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Puzzle 528442: Zwart naar winst in het eindspel

GM Kaiqi Yang (2481) - FM Jens Hirneise (2327)
Titled Tue 15th Feb Early chess.com INT (11), 2022.02.15
  2. 1.c4
  3. e5
  4. 2.g3
  5. h5
  6. 3.h3
  7. h4
  8. 4.g4
  9. d5
  10. 5.cxd5
  11. Qxd5
  12. 6.Nf3
  13. Nc6
  14. 7.Nc3
  15. Qd8
  16. 8.Bg2
  17. Nf6
  18. 9.d3
  19. Be7
  20. 10.Be3
  21. Be6
  22. 11.Ng5
  23. Bd5
  24. 12.Nxd5
  25. Nxd5
  26. 13.Qb3
  27. Bb4+
  28. 14.Kd1
  29. Nxe3+
  30. 15.fxe3
  31. Qxg5
  32. 16.Bxc6+
  33. bxc6
  34. 17.Qxb4
  35. Qxe3
  36. 18.Rc1
  37. Qb6
  38. 19.Qa3
  39. O-O-O
  40. 20.Rc4
  41. Rd4
  42. 21.Rxd4
  43. Qxd4
  44. 22.Rf1
  45. f6
  46. 23.Kc2
  47. Qe3
  48. 24.Qa6+
  49. Kd7
  50. 25.d4
  51. exd4
  52. 26.Rf3
  53. Qe4+
  54. 27.Qd3
  55. Re8
  56. 28.Kd2
  57. c5
  58. 29.b3
  59. Re6
  60. 30.Rf5
  61. Qxd3+
  62. 31.Kxd3
  63. Re3+
  64. 32.Kc4
  65. Kd6
  66. 33.g5
  67. fxg5
  68. 34.Rxg5
  69. Rxh3
  70. 35.Rg6+
  71. Ke5
  72. 36.Rxg7
  73. Rc3+
  74. 37.Kb5
  75. h3
  76. 38.Rh7
  77. Kf4
  78. 39.Kc6
  79. Kg3
  80. 40.Kxc7
  81. h2
  82. 41.Kb7
  83. Kg2
  84. 42.Rxh2+
  85. Kxh2
  86. 43.Kxa7
  87. Re3
  88. 44.Kb6
  89. Rxe2
  90. 45.Kxc5
  91. Rxa2
  92. 46.Kxd4
  93. Kg3
  94. 47.b4
  95. Kf4
  96. 48.b5
  97. Rd2+
  98. 49.Kc5
    1. Oplossing:49.Kc5
    2. Ke5
    3. 50.b6
      1. 50.Kc6
      2. Rc2+
      3. 51.Kb6 with a winning endgame, for example:
      4. Kd6
      5. 52.Ka5
      6. Kc5
      7. 53.Ka6
      8. Rb2
      9. 54.Kb7
      10. Rxb5+
      1. 50.Kb6 with a winning endgame, for example:
      2. Kd6
      3. 51.Ka5
      4. Kc5
      5. 52.Ka6
      6. Rd6+
      7. 53.Ka5
      8. Rb6
      9. 54.Ka4
      10. Rxb5
    5. 50...Rc2+
    6. 51.Kb5
    7. Kd5
      1. 51...Kd6
      2. 52.b7
        1. 52.Ka6 with a winning endgame, for example:
        2. Kc6
        3. 53.Ka7
        4. Ra2+
        5. 54.Kb8
        6. Kxb6
      4. 52...Kc7
        1. 52...Rb2+
        2. 53.Ka6 with a winning endgame, for example:
          1. 53.Ka5
          2. Rxb7
        4. 53...Kc6
        5. 54.b8=N+
        6. Rxb8
      6. 53.Ka6 with a winning endgame, for example:
        1. 53.b8=Q+
        2. Kxb8
        1. 53.b8=R
        2. Kxb8
        1. 53.b8=B+
        2. Kxb8
      8. 53...Rb2
      9. 54.Ka5
      10. Rxb7
    9. 52.Ka6 with a winning endgame, for example:
      1. 52.b7
      2. Rb2+
      3. 53.Ka5
      4. Rxb7
    11. 52...Kc6
    12. 53.Ka7
    13. Ra2+
    14. 54.Kb8
    15. Kxb6
  100. 49...Ke5
  101. 50.b6
  102. Rc2+
  103. 51.Kb5
  104. Kd6
  105. 52.Ka6
  106. Kc6
  107. 53.Ka7
  108. Ra2+
0-1
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