Does YOUR Engine Play This Sac? Is it Sound?

[Nordlandia]

[pgn][Event "i7-5960X 4.5GHz / 2x 2080 Supe"]
[Site "i7-5960X 4.5GHz / 2x 2080 Supe"]
[Date "2020.03.31"]
[Round "?"]
[White "lc0 v0.24.1"]
[Black "stockfish_20033022_x64_bmi2"]
[Result "1-0"]
[SetUp "1"]
[FEN "r1b1r1k1/1pqn1pbp/3p2p1/pNn5/2P1PP2/4BB2/PPQ3PP/3R1R1K b - - 0 16"]
[PlyCount "219"]
[EventDate "2020.??.??"]
[TimeControl "1800+30"]

16... Qb8 {-1.17/36 69s} 17. Nxd6 {1.29/17 35} Re7 {-1.03/36 88s} 18. e5 {
1.50/23 55} b6 {-1.23/35 64s} 19. Qf2 {1.11/18 78s} Ra7 {-1.16/38 51} 20. Nb5 {
1.07/20 41} Nf8 {-1.05/39 56} 21. Nxa7 {1.06/17 0.61s} Qxa7 {-1.07/38 64s} 22.
Rd8 {1.02/19 135s} Qc7 {-1.16/35 76s} 23. Rd6 {1.02/21 60s} g5 {-0.87/38 135s}
24. Bxc5 {1.32/26 101s} Qxc5 {-1.08/36 38} 25. Qxc5 {1.31/21 0.23s} bxc5 {
-1.34/42 83s} 26. Rc6 {1.44/23 82s} Be6 {-1.37/39 37} 27. Rxc5 {1.67/25 93s}
gxf4 {-1.08/41 66s} 28. Rxa5 {1.78/22 103s} Bxc4 {-1.58/44 125s} 29. Rc1 {
1.73/25 62s} Be6 {-1.35/43 37} 30. b4 {1.70/28 76s} Re8 {-1.36/44 55} 31. Rd1 {
1.70/32 0.24s} Rb8 {-1.39/47 172s} 32. b5 {1.91/18 149s} Nd7 {-1.30/43 34} 33.
Ra8 {1.90/27 87s} Rxa8 {-1.52/48 66s} 34. Bxa8 {1.90/27 45} Bxe5 {-1.48/47 65s}
35. Bd5 {1.93/22 50} Bf5 {-1.50/48 61s} 36. a4 {1.98/21 69s} Bc7 {-1.43/49 44}
37. Rc1 {2.03/21 103s} Bb6 {-1.46/50 53} 38. Rc4 {2.03/20 0.27s} Kf8 {-1.48/48
46} 39. Rxf4 {2.02/19 111s} Bg6 {-1.59/45 104s} 40. Rc4 {2.02/18 49} Ke7 {
-1.55/46 35} 41. Rc6 {2.02/18 0.26s} Bf5 {-1.97/49 390s} 42. Bf3 {1.98/17 280s}
Bd3 {-1.91/47 19} 43. h3 {1.96/18 211s} Bf2 {-1.78/39 32} 44. Rc7 {1.94/19 45}
Kd6 {-1.89/42 38} 45. Rb7 {1.93/18 82s} Be1 {-1.90/46 41} 46. Ra7 {1.92/18 6.5s
} Bg3 {-1.82/45 32} 47. Ra8 {1.90/17 159s} Bf2 {-1.90/49 41} 48. Ra6+ {1.91/14
0.23s} Ke7 {-1.90/51 27} 49. Ra5 {1.94/15 59} Bc4 {-1.84/40 73s} 50. Ra8 {
2.23/16 55} h6 {-1.91/41 49} 51. Bc6 {2.63/13 56} Ne5 {-2.11/48 44} 52. a5 {
2.71/13 35} h5 {-2.11/49 28} 53. a6 {2.74/14 43} h4 {-2.35/53 43} 54. Be4 {
2.77/14 38} Bxb5 {-2.35/56 23} 55. a7 {2.77/14 45} Kf6 {-2.35/59 25} 56. Rb8 {
2.78/13 30} Bc6 {-2.35/64 26} 57. Bxc6 {2.74/12 48} Bxa7 {-2.35/57 24} 58. Rc8
{2.72/11 17} Bf2 {-2.35/59 25} 59. Be4 {2.83/10 86s} Kg5 {-2.35/61 27} 60. Bb1
{2.91/9 65s} Ng6 {-2.35/60 28} 61. Rc2 {3.20/10 54} Bg3 {-2.35/63 29} 62. Rc5+
{3.23/11 31} Ne5 {-2.36/60 63s} 63. Kg1 {3.24/10 31} f5 {-2.35/64 23} 64. Kf1 {
3.71/9 57} Kf6 {-2.35/58 28} 65. Ke2 {3.84/9 50} Bh2 {-2.36/56 25} 66. Bc2 {
3.89/8 72s} Bg3 {-2.36/54 24} 67. Rb5 {3.79/8 34} Bf4 {-2.36/58 26} 68. Bb1 {
3.83/8 33} Bh2 {-2.36/55 34} 69. Rc5 {3.84/8 30} Bf4 {-2.36/58 24} 70. Rd5 {
3.77/8 35} Bg3 {-2.36/60 42} 71. Ra5 {3.63/8 32} Kg5 {-2.36/59 76s} 72. Rc5 {
3.76/8 28} Bh2 {-2.46/55 22} 73. Kd2 {3.85/8 28} Kf6 {-2.46/58 35} 74. Kc3 {
3.98/8 28} Bf4 {-2.46/58 65s} 75. Rb5 {4.07/8 38} Bg3 {-2.46/59 36} 76. Kd4 {
4.03/8 28} Nc6+ {-2.46/53 25} 77. Kc4 {3.91/8 34} Ne7 {-2.46/58 23} 78. Ra5 {
3.82/8 31} Be5 {-2.46/56 25} 79. Ra6+ {4.04/8 28} Kg5 {-2.46/55 25} 80. Ra7 {
3.87/8 37} Kf6 {-2.46/59 22} 81. Ra6+ {3.77/8 31} Kg5 {-2.46/59 110s} 82. Ra5 {
3.64/8 30} Kf6 {-2.55/56 47} 83. Bc2 {3.48/8 26} Ng6 {-2.55/53 29} 84. Bd3 {
3.44/9 26} Nf4 {-2.55/57 22} 85. Ra2 {3.29/10 32} Kg5 {-2.55/54 21} 86. Rf2 {
3.61/9 23} Bg7 {-2.55/58 21} 87. Bc2 {3.72/9 36} Be5 {-3.37/58 167s} 88. Bb1 {
3.57/9 28} Kg6 {-2.55/57 19} 89. Kc5 {3.58/9 37} Kf6 {-2.55/53 20} 90. Kc6 {
3.68/9 19} Ke6 {-2.55/56 17} 91. Kb7 {3.52/10 35} Bd6 {-2.55/91 28} 92. Ka6 {
3.27/9 40} Bb8 {-2.55/53 35} 93. Kb5 {3.22/9 30} Be5 {-2.55/57 39} 94. Kc6 {
3.23/9 19} Bb8 {-2.55/61 18} 95. Ra2 {2.85/10 42} Be5 {-2.55/49 35} 96. Rf2 {
2.70/11 26} Bb8 {-2.55/55 36} 97. Kb7 {2.63/11 29} Be5 {-2.55/48 32} 98. Kc8 {
2.64/11 25} Bd6 {-2.55/58 17} 99. Kd8 {2.57/11 20} Bb8 {-2.55/53 110s} 100. Ke8
{2.50/11 38} Be5 {-2.50/47 59} 101. Bc2 {2.50/12 20} Bb8 {-2.55/51 13} 102. Ba4
{2.34/12 27} Kf6 {-2.29/44 14} 103. Bd7 {2.34/13 13} Be5 {-2.16/49 14} 104. Rf1
{2.31/13 61s} Bc7 {-2.16/40 15} 105. Rf3 {2.31/14 30} Bd6 {-2.16/40 15} 106. g3
{2.33/16 16} hxg3 {-2.82/38 52} 107. Rxg3 {2.33/15 7.0s} Ng6 {-3.19/38 78s}
108. Rb3 {2.53/11 36} Bc7 {-3.37/46 13} 109. Bc8 {2.53/11 28} Nh4 {-3.37/46 15}
110. Kd7 {2.56/11 26} Ba5 {-3.37/45 14} 111. Kd6 {2.93/10 43} Bd2 {-3.30/38 15}
112. Kd5 {3.49/9 32} Ng6 {-3.37/50 19} 113. Kd4 {4.00/8 41} Ne7 {-3.37/49 16}
114. Bd7 {4.22/8 44} Be1 {-3.47/51 27} 115. Ke3 {5.21/7 30} Kg5 {-7.07/42 105s}
116. Ke2 {5.66/7 34} Ba5 {-5.71/52 10} 117. Rb5 {5.28/7 33} Bc7 {-7.37/48 44}
118. Kf3 {5.33/7 27} Bh2 {-7.37/48 18} 119. Be8 {5.45/7 38} Nc8 {-9.74/46 69s}
120. Rc5 {6.00/7 27} Nd6 {-7.37/41 17} 121. Bd7 {6.37/7 23} Bg1 {-8.09/46 50}
122. Rd5 {7.24/6 26} Bh2 {-8.16/40 22} 123. Kg2 {7.78/7 28} Bf4 {-9.93/44 38}
124. Ra5 {6.55/7 44} Kf6 {-9.94/37 11} 125. Kf3 {6.65/6 30} Bh2 {adjudication
-9.84/37 20s, White wins by adjudication} 1-0
[/pgn]

[BrendanJNorman]

Thanks for all of the analysis guys. Very interesting to see what *much* more powerful hardware shows in the critical position.

[BrendanJNorman]

...Personally I like 15.Ndb5 the best because it looks like you're using tactics to achieve a strategical goal.

Thanks. Yes, actually, I am one of those strange people who studies the games of engines to improve my own OTB play.

I have always been a fan of Lance Perkins' Thinker program, which maintains around 2800 level despite very often sacrificing a minor piece for 2 pawns and pressure. That's kind of a Thinker specialty.

At the same time, I have become very impressed by Lc0's ability to shut down and dominate enemy pieces, reducing their mobility to almost zero.

Both influences can be seen in my play in the game of this thread.

Obviously, I highly recommend the others to find their fav engines and study their games too.