Dev Builds » 20221119-0823

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 06:58:19 583783 3986 1113 939 1934 +15.18 ± 5.2 3 368 1079 538 5 +30.06 ± 10.33
ncm-dbt-02 06:59:34 586353 4014 1163 910 1941 +21.93 ± 5.21 4 341 1065 592 5 +43.86 ± 10.4
ncm-dbt-03 06:58:18 584426 4000 1142 916 1942 +19.65 ± 5.22 4 352 1061 580 3 +39.6 ± 10.43
ncm-dbt-04 06:57:57 568635 4000 1146 909 1945 +20.61 ± 5.18 7 330 1087 571 5 +41.72 ± 10.28
ncm-dbt-05 06:59:28 576824 4000 1168 922 1910 +21.39 ± 5.15 5 330 1081 582 2 +43.48 ± 10.31
20000 5732 4596 9672 +19.76 ± 2.32 23 1721 5373 2863 20 +39.75 ± 4.63

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
431558 ncm-dbt-02 586985 14 6 5 3 +24.85 ± 84.38 0 1 4 2 0 +49.98 ± 184.5 ↓
431557 ncm-dbt-01 583154 486 149 103 234 +32.98 ± 14.52 0 34 129 80 0 +66.57 ± 29.91 ↓
431556 ncm-dbt-05 582652 500 158 113 229 +31.35 ± 14.34 0 36 133 81 0 +63.23 ± 29.45 ↓
431555 ncm-dbt-04 568912 500 144 108 248 +25.06 ± 14.42 0 39 137 73 1 +48.96 ± 28.96 ↓
431554 ncm-dbt-03 584117 500 142 120 238 +15.3 ± 14.06 0 43 142 65 0 +30.65 ± 28.34 ↓
431553 ncm-dbt-02 584916 500 152 122 226 +20.87 ± 15.25 1 45 128 75 1 +41.89 ± 30.15 ↓
431552 ncm-dbt-01 584958 500 138 123 239 +10.43 ± 14.57 1 46 141 61 1 +20.87 ± 28.49 ↓
431551 ncm-dbt-05 575394 500 135 98 267 +25.76 ± 13.67 0 34 145 71 0 +51.8 ± 27.85 ↓
431550 ncm-dbt-04 568037 500 136 113 251 +15.99 ± 15.98 2 51 120 76 1 +33.46 ± 31.15 ↓
431549 ncm-dbt-03 586393 500 148 129 223 +13.21 ± 14.28 0 46 139 65 0 +26.46 ± 28.74 ↓
431548 ncm-dbt-02 589240 500 146 108 246 +26.45 ± 15.03 0 43 127 79 1 +51.8 ± 30.27 ↓
431547 ncm-dbt-01 583405 500 136 119 245 +11.82 ± 14.81 0 50 134 65 1 +22.27 ± 29.4 ↓
431546 ncm-dbt-05 569270 500 147 121 232 +18.08 ± 14.67 0 46 132 72 0 +36.26 ± 29.64 ↓
431545 ncm-dbt-04 567958 500 141 117 242 +16.69 ± 14.56 0 46 134 70 0 +33.46 ± 29.39 ↓
431544 ncm-dbt-03 585590 500 144 106 250 +26.46 ± 15.52 1 43 125 79 2 +51.8 ± 30.53 ↓
431543 ncm-dbt-02 586393 500 143 103 254 +27.85 ± 15.12 0 43 125 81 1 +54.65 ± 30.53 ↓
431542 ncm-dbt-01 584453 500 138 133 229 +3.47 ± 15.23 2 53 134 60 1 +8.34 ± 29.41 ↓
431541 ncm-dbt-04 566928 500 143 114 243 +20.17 ± 14.7 1 41 137 70 1 +40.48 ± 28.98 ↓
431540 ncm-dbt-05 576946 500 162 105 233 +39.78 ± 14.08 0 30 133 87 0 +80.63 ± 29.38 ↓
431539 ncm-dbt-03 582152 500 143 111 246 +22.27 ± 14.6 1 40 135 74 0 +46.13 ± 29.23 ↓
431538 ncm-dbt-02 585928 500 148 115 237 +22.96 ± 14.13 1 35 145 68 1 +46.13 ± 27.87 ↓
431537 ncm-dbt-01 583489 500 129 125 246 +2.78 ± 13.62 0 48 150 52 0 +5.56 ± 27.29 ↓
431536 ncm-dbt-05 576251 500 150 124 226 +18.08 ± 15.78 3 46 123 78 0 +40.48 ± 30.78 ↓
431535 ncm-dbt-04 570469 500 144 108 248 +25.06 ± 14.55 0 41 132 77 0 +50.38 ± 29.62 ↓
431534 ncm-dbt-03 582987 500 145 102 253 +29.95 ± 14.89 2 35 131 82 0 +63.23 ± 29.72 ↓
431533 ncm-dbt-02 586604 500 163 112 225 +35.56 ± 13.95 0 30 140 79 1 +70.44 ± 28.44 ↓
431532 ncm-dbt-01 583321 500 138 119 243 +13.21 ± 14.15 0 45 141 64 0 +26.46 ± 28.48 ↓
431531 ncm-dbt-05 574784 500 134 121 245 +9.04 ± 14.19 0 48 141 61 0 +18.08 ± 28.49 ↓
431530 ncm-dbt-03 586985 500 143 111 246 +22.26 ± 14.08 0 38 143 68 1 +43.3 ± 28.16 ↓
431529 ncm-dbt-04 568116 500 149 128 223 +14.6 ± 13.87 2 36 151 61 0 +32.05 ± 27.1 ↓
431528 ncm-dbt-02 584285 500 133 124 243 +6.26 ± 15.1 1 54 130 65 0 +13.9 ± 29.91 ↓
431527 ncm-dbt-01 582360 500 145 103 252 +29.25 ± 15.22 0 43 123 83 1 +57.5 ± 30.78 ↓
431526 ncm-dbt-04 570148 500 140 111 249 +20.18 ± 14.58 1 41 136 72 0 +41.89 ± 29.11 ↓
431525 ncm-dbt-05 577602 500 140 117 243 +15.99 ± 14.89 0 48 132 69 1 +30.65 ± 29.65 ↓
431524 ncm-dbt-03 584076 500 144 120 236 +16.69 ± 15.19 0 51 124 75 0 +33.46 ± 30.66 ↓
431523 ncm-dbt-02 585253 500 138 106 256 +22.27 ± 14.73 1 41 133 75 0 +46.13 ± 29.5 ↓
431522 ncm-dbt-01 585126 500 140 114 246 +18.08 ± 15.17 0 49 127 73 1 +34.86 ± 30.28 ↓
431521 ncm-dbt-04 568514 500 149 110 241 +27.16 ± 14.57 1 35 140 72 2 +53.22 ± 28.53 ↓
431520 ncm-dbt-05 581693 500 142 123 235 +13.21 ± 14.67 2 42 142 63 1 +27.85 ± 28.34 ↓
431519 ncm-dbt-02 587579 500 134 115 251 +13.21 ± 14.67 0 49 133 68 0 +26.46 ± 29.52 ↓
431518 ncm-dbt-03 583112 500 133 117 250 +11.12 ± 15.37 0 56 122 72 0 +22.27 ± 30.9 ↓

Commit

Commit ID 219fa2f0a79381d35d9eb1240781cc598e74f647
Author Michael Chaly
Date 2022-11-19 08:23:26 UTC
Do shallower search in case of lmr being not successful enough In case of a move passing LMR but it results being not too far from the current best search result produce a full depth search with reduced depth. Original idea by lonfom169 . Passed STC: https://tests.stockfishchess.org/tests/view/6373409b54d69a2f33913fbd LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 169504 W: 45351 L: 44848 D: 79305 Ptnml(0-2): 598, 18853, 45353, 19344, 604 Passed LTC: https://tests.stockfishchess.org/tests/view/6374c58528e3405283eb8d2d LLR: 2.96 (-2.94,2.94) <0.50,2.50> Total: 51144 W: 13802 L: 13471 D: 23871 Ptnml(0-2): 19, 4928, 15362, 5229, 34 closes https://github.com/official-stockfish/Stockfish/pull/4230 bench 4277005
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