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問題 639999: 白 が 防御とするために

FM Alexander Devaev (2325) - GM Yi Xu (2507)
Titled Tue 5th Jul Early chess.com INT (1), 2022.07.05
  2. 1.d4
  3. Nf6
  4. 2.c4
  5. e6
  6. 3.Nf3
  7. d5
  8. 4.Nc3
  9. c6
  10. 5.cxd5
  11. exd5
  12. 6.Bg5
  13. Be7
  14. 7.Bxf6
  15. Bxf6
  16. 8.e3
  17. Bf5
  18. 9.Bd3
  19. Bxd3
  20. 10.Qxd3
  21. O-O
  22. 11.O-O
  23. a5
  24. 12.Rab1
  25. a4
  26. 13.Qc2
  27. b5
  28. 14.Ne2
  29. Qd6
  30. 15.Rfc1
  31. Rc8
  32. 16.Nf4
  33. Nd7
  34. 17.Nd3
  35. Be7
  36. 18.Nfe5
  37. Nb8
  38. 19.Qe2
  39. f6
  40. 20.Qg4
  41. Rf8
    1. 解決策:20...Rf8
      1. 脅威を与える:
      2. 21...fxe5
    3. 21.Nf3
  43. 21.Nf3
  44. Nd7
  45. 22.Nc5
  46. Nxc5
  47. 23.Rxc5
  48. f5
  49. 24.Qh3
  50. Qf6
  51. 25.Rc3
  52. a3
  53. 26.b3
  54. c5
  55. 27.Ne5
  56. Rfd8
  57. 28.Rbc1
  58. c4
  59. 29.bxc4
  60. dxc4
  61. 30.Qf3
  62. h6
  63. 31.Nc6
  64. Qd6
  65. 32.Nxe7+
  66. Qxe7
  67. 33.Qxf5
  68. Rdb8
  69. 34.h3
  70. Kh8
  71. 35.R3c2
  72. Qd6
  73. 36.Qf7
  74. Rc8
  75. 37.Qf5
  76. Rab8
  77. 38.Qf3
  78. Qe6
  79. 39.d5
  80. Qe5
  81. 40.e4
  82. b4
  83. 41.Rxc4
  84. Rxc4
  85. 42.Rxc4
  86. b3
  87. 43.axb3
  88. a2
  89. 44.Rc1
  90. a1=Q
  91. 45.Rxa1
  92. Qxa1+
  93. 46.Kh2
  94. Qe5+
  95. 47.g3
  96. Re8
  97. 48.d6
  98. Qxd6
0-1

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