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問題 653824: 白 が 守って勝つとするために

GM Matthias Blübaum (2673) - GM Baadur Jobava (2595)
Titled Tue 21st Jun Early chess.com INT (9), 2022.06.21
  2. 1.d4
  3. d5
  4. 2.c4
  5. dxc4
  6. 3.e4
  7. Nf6
  8. 4.e5
  9. Nd5
  10. 5.Bxc4
  11. Bf5
  12. 6.Ne2
  13. e6
  14. 7.O-O
  15. Be7
  16. 8.Nbc3
  17. O-O
  18. 9.Ng3
  19. Bg6
  20. 10.Bxd5
  21. exd5
  22. 11.f4
  23. f5
  24. 12.Qb3
  25. Nc6
  26. 13.Qxd5+
  27. Bf7
  28. 14.Qxd8
  29. Raxd8
  30. 15.Nxf5
  31. Bb4
  32. 16.a3
  33. Bc4
  34. 17.axb4
  35. Bxf1
  36. 18.d5
  37. Nxb4
  38. 19.Nd4
  39. Bc4
  40. 20.Ne6
  41. Nxd5
  42. 21.Nxf8
  43. Nxc3
  44. 22.bxc3
  45. Rd1+
  46. 23.Kf2
  47. Rf1+
  48. 24.Ke3
  49. Kxf8
  50. 25.Kd4
  51. b5
  52. 26.g4
  53. Ke8
  54. 27.f5
  55. h5
  56. 28.h3
  57. hxg4
  58. 29.hxg4
  59. Be2
  60. 30.Bb2
  61. Rxa1
  62. 31.Bxa1
  63. Bxg4
  64. 32.f6
  65. g5
  66. 33.c4
  67. b4
  68. 34.Kc5
  69. a5
  70. 35.Kb5
  71. Be6
  72. 36.Kxa5
  73. c5
  74. 37.Kb5
  75. g4
  76. 38.Kxc5
  77. b3
  78. 39.Kb4
  79. g3
  80. 40.Kxb3
  81. g2
    1. 解決策:40...g2
      1. 脅威を与える:
      2. 41...g1=Q
    3. 41.Bd4
    4. さて、もしg1=Q
    5. 42.Bxg1
  83. 41.Bd4
  84. Kd7
  85. 42.Kb4
  86. Kc6
  87. 43.Bg1
  88. Bf7
  89. 44.Kc3
  90. Be6
  91. 45.Kd4
  92. Bf7
  93. 46.Ke4
  94. Bxc4
  95. 47.Kf5
  96. Kd7
  97. 48.Ke4
  98. Ke6
  99. 49.Kf4
  100. Bd5
  101. 50.Bh2
  102. Bc6
  103. 51.Bg1
  104. Bd5
  105. 52.Bh2
  106. Bc6
  107. 53.Bg1
  108. Bd5
1/2-1/2

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