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Puzzle 852379: Les blancs défendent et gagnent

Durga Saravanan (1922) - Sreekarthika Velmurugan (1438)
74th ch-SGP 2023 Singapore SIN, 2023.01.29
  2. 1.d4
  3. d5
  4. 2.c4
  5. c6
  6. 3.Cf3
  7. Cf6
  8. 4.e3
  9. Ff5
  10. 5.Cc3
  11. e6
  12. 6.Ch4
  13. Fe4
  14. 7.f3
  15. Fg6
  16. 8.Db3
  17. Dc7
  18. 9.Fd2
  19. Cbd7
  20. 10.cxd5
  21. exd5
  22. 11.Fe2
  23. Fe7
  24. 12.g3
  25. Fd6
  26. 13.O-O-O
  27. O-O-O
  28. 14.Cxg6
  29. hxg6
  30. 15.e4
  31. Fe7
  32. 16.Ff4
  33. Db6
  34. 17.Dc2
  35. Cf8
  36. 18.Ca4
  37. Da5
  38. 19.a3
  39. Ce6
  40. 20.b4
  41. Fxb4
  42. 21.axb4
  43. Dxb4
  44. 22.Fe5
  45. dxe4
  46. 23.Fa6
  47. Da3+
  48. 24.Rb1
  49. Db4+
  50. 25.Ra2
  51. Td7
  52. 26.Tb1
  53. Cxd4
  54. 27.Fxd4
  55. Dxd4
  56. 28.Dxc6+
  57. Rd8
  58. 29.Txb7
  59. Txb7
  60. 30.Fxb7
  61. Df2+
  62. 31.Cb2
  63. Re7
  64. 32.Td1
  65. Td8
  66. 33.Dc7+
  67. Td7
  68. 34.Txd7+
  69. Cxd7
  70. 35.Fc6
  71. Dd2
  72. 36.fxe4
  73. Dd6
  74. 37.Dxd6+
  75. Rxd6
  76. 38.Fxd7
  77. Rxd7
  78. 39.Rb3
  79. Re6
  80. 40.Rc4
  81. f5
  82. 41.Rd4
  83. a5
  84. 42.e5
  85. g5
  86. 43.Cd3
  87. Re7
  88. 44.Cc5
  89. f4
  90. 45.gxf4
  91. gxf4
  92. 46.h4
  93. f3
  94. 47.Re3
  95. a4
  96. 48.Rxf3
  97. a3
  98. 49.Re4
  99. a2
    1. Solution:49...a2
      1. Menace:
      2. 50...a1=Q
    3. 50.Cb3
    4. Maintenant sia1=Q
    5. 51.Cxa1
  101. 50.Cb3
  102. Re6
  103. 51.h5
  104. Re7
  105. 52.Rf5
  106. Rf7
  107. 53.e6+
  108. Re7
  109. 54.Re5
  110. Re8
  111. 55.Rd6
  112. Rd8
  113. 56.Ca1
  114. Re8
  115. 57.e7
  116. g6
  117. 58.h6
1-0

This puzzle is part of the following Puzzle Academy skills:
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