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Puzzle 875880: Evaluați (Negrul la mutare)

Georgi Ryabov (1701) - Anatoly Varivoda (1781)
74th ch-Urals 2016 Khanty-Mansiysk RUS, 2016.03.25
  2. 1.c4
  3. Cf6
  4. 2.Cc3
  5. e5
  6. 3.e4
  7. Nc5
  8. 4.d3
  9. d6
  10. 5.h3
  11. h6
  12. 6.Cge2
  13. O-O
  14. 7.g3
  15. c6
  16. 8.Ng2
  17. Ne6
  18. 9.O-O
  19. a6
  20. 10.Ne3
  21. Nxe3
  22. 11.fxe3
  23. Dd7
  24. 12.Rh2
  25. Ch7
  26. 13.g4
  27. De7
  28. 14.Cg3
  29. g6
  30. 15.De2
  31. b5
  32. 16.b3
  33. b4
  34. 17.Cd1
  35. a5
  36. 18.d4
  37. Nd7
  38. 19.Cb2
  39. Ta6
  40. 20.Cd3
  41. c5
  42. 21.d5
  43. a4
  44. 22.Cb2
  45. a3
  46. 23.Cd3
  47. Dh4
  48. 24.Cf2
  49. Nc8
  50. 25.Cd3
  51. Cd7
  52. 26.Ce1
  53. Cdf6
  54. 27.Nf3
  55. Cg5
  56. 28.Dg2
    1. Soluţie:28.Dg2 Black is winning. White's space advantage is not enough compensation for Black's better king safety, piece activity și better pawn structure.
    2. Nxg4 Score -5.4, Depth 30, Stockfish 15.1 NNUE
      1. 28...h5 Score -5.31, Depth 29, Stockfish 15.1 NNUE
  58. 28...Nxg4
  59. 29.Cf5
  60. gxf5
  61. 30.Dg3
  62. Dxg3+
  63. 31.Rxg3
  64. Nxf3
  65. 32.Cxf3
  66. Cgxe4+
  67. 33.Rh2
  68. Ch5
  69. 34.Ch4
  70. f4
  71. 35.exf4
  72. Cxf4
  73. 36.Cf5
  74. Rh7
  75. 37.Tg1
  76. Cg6
  77. 38.h4
  78. Cf6
  79. 39.Taf1
  80. Ch5
  81. 40.Cg3
  82. Cxg3
  83. 41.Rxg3
  84. f5
  85. 42.h5
  86. Ce7
  87. 43.Rh4
  88. Tg8
  89. 44.Th1
  90. Taa8
  91. 45.Th2
  92. Tg4+
  93. 46.Rh3
  94. Tag8
  95. 47.Thf2
  96. f4
  97. 48.Tf3
  98. Cf5
  99. 49.Rh2
  100. T8g5
  101. 50.Th3
  102. Tg2+
  103. 51.Rh1
  104. Txa2
  105. 52.Tb1
  106. Tgg2
  107. 53.Tg1
  108. Cg3+
  109. 54.Txg3
  110. Txg3
  111. 55.Tb1
  112. Tb2
  113. 56.Ta1
  114. Tgxb3
  115. 57.Tg1
  116. Tb1
  117. 58.Rh2
  118. Txg1
  119. 59.Rxg1
  120. a2
  121. 60.Rf2
  122. a1=Q
  123. 61.Rg2
  124. Da2+
  125. 62.Rf1
  126. Tb1#
0-1
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