Dev Builds » 20230728-2256

Use this dev build

NCM plays each Stockfish dev build 20,000 times against Stockfish 15. This yields an approximate Elo difference and establishes confidence in the strength of the dev builds.

Summary

Host Duration Avg Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo
ncm-dbt-01 06:53:51 584740 4006 1331 714 1961 +53.94 ± 5.01 7 173 1026 790 7 +110.62 ± 10.54
ncm-dbt-02 06:53:32 586248 4000 1329 749 1922 +50.74 ± 5.09 3 201 1021 763 12 +102.03 ± 10.59
ncm-dbt-03 06:54:53 587102 3998 1297 743 1958 +48.46 ± 5.27 5 238 961 788 7 +98.5 ± 10.98
ncm-dbt-04 06:53:56 571742 4014 1312 768 1934 +47.38 ± 5.14 3 224 1017 752 11 +95.09 ± 10.64
ncm-dbt-05 06:55:04 585220 3982 1300 710 1972 +51.86 ± 5.1 2 206 988 790 5 +105.57 ± 10.8
20000 6569 3684 9747 +50.47 ± 2.29 20 1042 5013 3883 42 +102.33 ± 4.79

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
393295 ncm-dbt-01 583698 6 3 1 2 +120.22 ± 109.7 0 0 1 2 0 +279.24 ± 576.89
393294 ncm-dbt-04 572598 14 5 2 7 +75.56 ± 67.89 0 0 4 3 0 +159.09 ± 177.81
393293 ncm-dbt-05 582402 482 162 70 250 +67.14 ± 14.59 1 17 113 109 1 +139.7 ± 32.01
393292 ncm-dbt-03 586646 498 155 90 253 +45.61 ± 15.12 0 33 120 94 2 +89.86 ± 31.17
393291 ncm-dbt-02 585506 500 168 86 246 +57.5 ± 13.94 0 21 127 101 1 +116.78 ± 30.03
393290 ncm-dbt-04 570108 500 153 89 258 +44.72 ± 14.24 1 26 131 92 0 +92.46 ± 29.6
393289 ncm-dbt-01 584034 500 161 100 239 +42.6 ± 14.38 1 28 130 91 0 +88.0 ± 29.77
393288 ncm-dbt-05 585801 500 165 87 248 +54.64 ± 13.94 0 22 129 98 1 +110.6 ± 29.78
393287 ncm-dbt-03 586097 500 156 96 248 +41.9 ± 15.25 2 32 120 96 0 +88.0 ± 31.17
393286 ncm-dbt-02 586223 500 176 97 227 +55.36 ± 15.06 0 26 124 95 5 +106.01 ± 30.56
393285 ncm-dbt-04 571029 500 174 101 225 +51.09 ± 14.58 1 25 125 98 1 +104.49 ± 30.42
393284 ncm-dbt-01 584453 500 173 86 241 +61.07 ± 13.53 0 18 127 105 0 +126.18 ± 29.94
393283 ncm-dbt-05 579868 500 168 90 242 +54.64 ± 14.36 0 24 126 98 2 +109.07 ± 30.24
393282 ncm-dbt-02 588217 500 175 98 227 +53.93 ± 14.19 1 21 129 98 1 +110.6 ± 29.78
393281 ncm-dbt-03 587452 500 164 83 253 +56.79 ± 14.73 1 25 116 108 0 +118.33 ± 31.7
393280 ncm-dbt-01 581153 500 171 77 252 +66.1 ± 14.31 0 20 118 110 2 +134.15 ± 31.33
393279 ncm-dbt-04 572840 500 158 99 243 +41.19 ± 14.03 0 28 136 85 1 +82.1 ± 28.94
393278 ncm-dbt-05 582694 500 153 94 253 +41.19 ± 14.7 0 34 123 93 0 +83.57 ± 30.77
393277 ncm-dbt-04 572477 500 180 96 224 +58.93 ± 14.83 0 26 116 106 2 +118.33 ± 31.7
393276 ncm-dbt-01 587325 500 167 94 239 +51.09 ± 13.9 1 20 135 93 1 +104.49 ± 28.91
393275 ncm-dbt-02 588260 500 155 94 251 +42.6 ± 14.38 0 30 130 89 1 +85.04 ± 29.79
393274 ncm-dbt-03 587325 500 172 97 231 +52.51 ± 14.39 0 26 124 99 1 +106.01 ± 30.56
393273 ncm-dbt-05 586350 500 164 92 244 +50.38 ± 13.72 0 23 132 95 0 +102.97 ± 29.38
393272 ncm-dbt-04 573325 500 163 98 239 +45.42 ± 14.68 0 30 127 91 2 +89.48 ± 30.19
393271 ncm-dbt-02 587282 500 156 96 248 +41.89 ± 14.21 0 29 133 87 1 +83.57 ± 29.37
393270 ncm-dbt-01 583698 500 167 81 252 +60.36 ± 14.21 0 22 121 106 1 +123.02 ± 30.92
393269 ncm-dbt-03 588515 500 155 98 247 +39.78 ± 14.87 0 35 124 90 1 +79.17 ± 30.64
393268 ncm-dbt-02 585590 500 175 97 228 +54.65 ± 14.08 1 20 130 98 1 +112.14 ± 29.61
393267 ncm-dbt-01 587749 500 165 77 258 +61.79 ± 13.27 1 12 136 100 1 +127.76 ± 28.42
393266 ncm-dbt-04 569310 500 149 104 247 +31.35 ± 14.6 1 34 135 79 1 +63.23 ± 29.18
393265 ncm-dbt-05 586054 500 158 97 245 +42.6 ± 14.78 1 30 127 91 1 +86.52 ± 30.2
393264 ncm-dbt-03 587367 500 155 88 257 +46.84 ± 15.14 1 31 119 98 1 +95.44 ± 31.3
393263 ncm-dbt-02 584622 500 161 93 246 +47.55 ± 14.4 0 29 124 97 0 +96.94 ± 30.59
393262 ncm-dbt-01 584243 500 165 101 234 +44.72 ± 14.51 2 24 133 90 1 +92.46 ± 29.31
393261 ncm-dbt-04 570348 500 162 81 257 +56.78 ± 14.46 0 24 123 101 2 +113.68 ± 30.67
393260 ncm-dbt-05 586520 500 168 85 247 +58.21 ± 13.69 0 20 127 103 0 +119.89 ± 30.01
393259 ncm-dbt-03 587028 500 167 93 240 +51.8 ± 14.49 0 27 123 99 1 +104.49 ± 30.71
393258 ncm-dbt-04 573649 500 168 98 234 +48.96 ± 15.0 0 31 120 97 2 +96.94 ± 31.16
393257 ncm-dbt-01 586308 500 159 97 244 +43.3 ± 15.07 2 29 125 93 1 +89.48 ± 30.48
393256 ncm-dbt-03 586393 500 173 98 229 +52.51 ± 15.18 1 29 115 104 1 +107.54 ± 31.86
393255 ncm-dbt-02 584285 500 163 88 249 +52.51 ± 14.79 1 25 124 98 2 +106.01 ± 30.56
393254 ncm-dbt-05 592072 500 162 95 243 +46.84 ± 15.27 0 36 111 103 0 +95.44 ± 32.4

Commit

Commit ID 65ece7d985291cc787d6c804a33f1dd82b75736d
Author rn5f107s2
Date 2023-07-28 22:56:26 UTC
Malus during move ordering for putting pieces en prise The original idea is the reverse of a previous patch [1] which added bonuses in our move picker to moves escaping threats. In this patch, in addition to bonuses for evading threats, we apply penalties to moves moving to threatened squares. Further tweaks of that basic idea resulted in this specific version which further increases the penalty of moves moving to squares threatend depending on the piece threatening it. So for example a queen moving to a square attacked by a pawn would receive a larger penalty than a queen moving to square attacked by a rook. [1]: https://github.com/official-stockfish/Stockfish/commit/08e0f52b77edb929989c68c49e954b9bc5d7d67e -------- Passed STC: https://tests.stockfishchess.org/tests/live_elo/64c11269dc56e1650abb935d LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 95552 W: 24654 L: 24250 D: 46648 Ptnml(0-2): 322, 11098, 24562, 11442, 352 Passed LTC: https://tests.stockfishchess.org/tests/live_elo/64c2004ddc56e1650abba8b3 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 190230 W: 48806 L: 48178 D: 93246 Ptnml(0-2): 90, 20439, 53453, 21019, 114 ------- closes https://github.com/official-stockfish/Stockfish/pull/4711 Bench: 1350831
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