問題 222978: 白 が 防御とするために

GM Maxime Vachier-Lagrave (2784) - GM Hikaru Nakamura (2736)
Skilling Open KO 2020 chess24.com INT, 2020.11.26
  1. 1.e4
  2. e5
  3. 2.Nf3
  4. Nc6
  5. 3.Bc4
  6. Bc5
  7. 4.O-O
  8. Nf6
  9. 5.d3
  10. d6
  11. 6.c3
  12. h6
  13. 7.Re1
  14. O-O
  15. 8.Nbd2
  16. a5
  17. 9.Nf1
  18. Be6
  19. 10.Bb5
  20. Ne7
  21. 11.d4
  22. exd4
  23. 12.cxd4
  24. Bb6
  25. 13.Ng3
  26. d5
  27. 14.e5
  28. Ne4
  29. 15.Bd3
  30. Nxg3
  31. 16.hxg3
  32. Bg4
  33. 17.Bc2
  34. c5
  35. 18.dxc5
  36. Bxc5
  37. 19.Be3
  38. Rc8
  39. 20.Bxc5
  40. Rxc5
  41. 21.Qd2
  42. Qc7
  43. 22.Bd3
  44. Nc6
  45. 23.Qe3
  46. Nb4
  47. 24.Nd4
  48. Nxd3
  49. 25.Qxd3
  50. Qb6
  51. 26.b3
  52. Rfc8
  53. 27.Kh2
  54. Qb4
  55. 28.Qe3
  56. Rc3
  57. 29.Qf4
  58. Bd7
  59. 30.Red1
  60. a4
  61. 31.Ne2
  62. Qxf4
  63. 32.Nxf4
  64. Be6
  65. 33.bxa4
  66. Rc2
  67. 34.Kg1
  68. Ra8
  69. 35.Rd4
  70. Rc4
  71. 36.Rd2
  72. Rcxa4
  73. 37.Ne2
  74. d4
  75. 38.Nxd4
  76. Bxa2
  77. 39.f4
  78. Bc4
  79. 40.Rb1
  80. Ra1
  81. 41.Rdb2
  82. Bd5
  83. 42.Rxa1
  84. Rxa1+
  85. 43.Kf2
  86. Ra2
  87. 44.Rxa2
  88. Bxa2
  89. 45.g4
  90. Bc4
  91. 46.Ke3
  92. b5
  93. 47.Nc6
  94. Kf8
  95. 48.g3
  96. Bd5
  97. 49.Nb4
  98. Bb3
  99. 50.f5
  100. Bd1
  101. 51.Kf4
  102. g5+
  103. 52.fxg6
  104. fxg6
  105. 53.g5
  106. hxg5+
  107. 54.Kxg5
  108. Kf7
  109. 55.Kf4
  110. Ke6
  111. 56.Ke4
  112. Bb3
  113. 57.Na6
  114. Ke7
  115. 58.Kd4
  116. Bd1
  117. 59.Nc7
  118. Be2
  119. 60.Nd5+
  120. Kf7
  121. 61.e6+
  122. Kxe6
  123. 62.Nf4+
  124. Kf5
  125. 63.Nxe2
  126. Kg4
  127. 64.Ke3
  128. b4
  129. 65.Kf2
  130. b3
  131. 66.Kg2
  132. b2
    1. 解決策:66...b2
      1. 脅威を与える:
      2. 67...b1=Q
    2. 67.Nc3
    3. さて、もしb1=Q
    4. 68.Nxb1
  133. 67.Nc3
  134. Kf5
  135. 68.Kf3
  136. Ke5
  137. 69.Ke3
  138. Kf5
  139. 70.Kf3
  140. Ke5
  141. 71.Nb1
  142. Kd4
  143. 72.Ke2
  144. Ke4
  145. 73.Nc3+
  146. Kf5
  147. 74.Ke3
  148. Kg4
  149. 75.Kf2
  150. Kf5
  151. 76.Kf3
1/2-1/2

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