Dev Builds » 20251101-1027

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 06:45:21 581482 4016 1669 447 1900 +109.18 ± 4.64 1 46 711 1230 20 +240.34 ± 12.71
ncm-dbt-02 06:45:16 585386 4008 1676 439 1893 +110.84 ± 4.64 0 49 688 1248 19 +245.08 ± 12.94
ncm-dbt-03 06:45:16 585536 3994 1630 447 1917 +106.09 ± 4.62 1 45 737 1198 16 +232.73 ± 12.46
ncm-dbt-04 06:45:13 566245 3998 1631 430 1937 +107.69 ± 4.64 1 48 715 1219 16 +237.21 ± 12.68
ncm-dbt-05 06:43:47 581692 3984 1634 448 1902 +106.66 ± 4.68 1 53 712 1211 15 +234.57 ± 12.72
20000 8240 2211 9549 +108.09 ± 2.08 4 241 3563 6106 86 +237.96 ± 5.68

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
439097 ncm-dbt-02 585421 8 4 1 3 +136.8 ± 89.09 0 0 1 3 0 +337.69 ± 541.44
439096 ncm-dbt-01 580987 16 7 1 8 +136.89 ± 61.78 0 0 2 6 0 +337.87 ± 515.83
439095 ncm-dbt-05 579702 484 194 49 241 +107.38 ± 13.32 1 5 84 152 0 +242.62 ± 37.29
439094 ncm-dbt-04 565233 498 208 56 234 +109.53 ± 13.6 1 6 84 156 2 +244.33 ± 37.37
439093 ncm-dbt-03 583698 494 202 55 237 +106.61 ± 13.83 0 8 88 147 4 +229.61 ± 36.47
439092 ncm-dbt-01 582277 500 210 46 244 +118.33 ± 13.0 0 6 76 166 2 +268.17 ± 39.39
439091 ncm-dbt-02 587070 500 210 53 237 +112.91 ± 13.39 0 6 85 155 4 +247.41 ± 37.09
439090 ncm-dbt-05 580862 500 214 63 223 +108.3 ± 13.4 0 8 85 155 2 +238.66 ± 37.17
439089 ncm-dbt-04 560827 500 204 47 249 +112.91 ± 13.04 0 5 86 156 3 +249.64 ± 36.79
439088 ncm-dbt-03 587707 500 204 56 240 +106.01 ± 13.22 0 4 99 142 5 +226.0 ± 33.89
439087 ncm-dbt-01 582193 500 194 58 248 +96.94 ± 13.33 1 7 97 145 0 +213.85 ± 34.58
439086 ncm-dbt-02 585379 500 203 55 242 +106.01 ± 13.56 0 9 86 153 2 +232.26 ± 36.96
439085 ncm-dbt-05 582611 500 202 59 239 +102.22 ± 12.35 0 3 102 144 1 +223.94 ± 33.2
439084 ncm-dbt-04 564683 500 207 54 239 +109.83 ± 12.7 0 4 91 153 2 +243.0 ± 35.57
439083 ncm-dbt-03 587622 500 206 55 239 +108.3 ± 12.88 1 3 91 154 1 +243.0 ± 35.57
439082 ncm-dbt-01 583279 500 215 50 235 +119.11 ± 13.34 0 5 80 160 5 +263.42 ± 38.27
439081 ncm-dbt-02 584076 500 220 57 223 +117.55 ± 12.46 0 3 83 162 2 +265.78 ± 37.35
439080 ncm-dbt-05 584159 500 216 59 225 +112.91 ± 13.22 0 6 84 157 3 +249.64 ± 37.33
439079 ncm-dbt-04 567522 500 191 41 268 +107.54 ± 12.71 0 4 94 150 2 +236.51 ± 34.92
439078 ncm-dbt-03 584243 500 209 53 238 +112.14 ± 12.51 0 5 84 161 0 +254.16 ± 37.27
439077 ncm-dbt-01 582027 500 215 61 224 +110.6 ± 12.88 0 4 91 152 3 +243.0 ± 35.57
439076 ncm-dbt-02 584874 500 215 50 235 +119.11 ± 12.43 0 5 75 170 0 +275.45 ± 39.63
439075 ncm-dbt-05 580116 500 204 63 233 +100.7 ± 13.03 0 8 93 149 0 +221.9 ± 35.4
439074 ncm-dbt-03 584790 500 205 55 240 +107.54 ± 12.88 0 5 92 151 2 +236.51 ± 35.43
439073 ncm-dbt-04 566257 500 201 50 249 +108.3 ± 13.06 0 6 89 153 2 +238.66 ± 36.16
439072 ncm-dbt-01 581569 500 210 56 234 +110.6 ± 12.7 0 4 90 154 2 +245.2 ± 35.79
439071 ncm-dbt-02 585000 500 208 52 240 +112.14 ± 12.33 0 2 92 154 2 +249.64 ± 35.13
439070 ncm-dbt-05 583489 500 198 50 252 +106.01 ± 13.22 0 6 93 148 3 +230.16 ± 35.29
439069 ncm-dbt-04 568355 500 204 69 227 +96.19 ± 13.32 0 8 101 139 2 +206.01 ± 33.8
439068 ncm-dbt-03 585928 500 204 55 241 +106.77 ± 12.71 0 5 92 152 1 +236.51 ± 35.43
439067 ncm-dbt-01 578465 500 206 63 231 +102.22 ± 13.54 0 7 97 142 4 +217.85 ± 34.53
439066 ncm-dbt-02 584159 500 206 56 238 +107.54 ± 12.88 0 6 89 154 1 +238.66 ± 36.16
439065 ncm-dbt-05 580447 500 204 51 245 +109.83 ± 14.37 0 11 80 154 5 +236.51 ± 38.38
439064 ncm-dbt-04 566296 500 207 53 240 +110.6 ± 12.88 0 6 85 158 1 +247.41 ± 37.09
439063 ncm-dbt-01 578054 500 203 58 239 +103.73 ± 13.05 0 7 92 150 1 +228.08 ± 35.56
439062 ncm-dbt-03 584034 500 194 60 246 +95.44 ± 12.98 0 8 100 142 0 +207.95 ± 33.99
439061 ncm-dbt-02 584874 500 200 53 247 +105.25 ± 13.72 0 9 88 150 3 +228.08 ± 36.51
439060 ncm-dbt-05 582152 500 202 54 244 +106.01 ± 12.88 0 6 91 152 1 +234.38 ± 35.72
439059 ncm-dbt-04 570789 500 209 60 231 +106.77 ± 13.56 0 9 85 154 2 +234.38 ± 37.19
439058 ncm-dbt-01 584495 500 209 54 237 +111.37 ± 13.22 0 6 86 155 3 +245.2 ± 36.85
439057 ncm-dbt-03 586266 500 206 58 236 +106.01 ± 13.39 0 7 91 149 3 +230.16 ± 35.78
439056 ncm-dbt-02 587622 500 210 62 228 +106.01 ± 14.04 0 9 89 147 5 +226.0 ± 36.29

Commit

Commit ID 013d42914fa564c9aa69cc93f16aed6a6e3869b9
Author Daniel Monroe
Date 2025-11-01 10:27:27 UTC
Simplify static eval bonus Passed non-regression STC LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 176896 W: 45998 L: 45933 D: 84965 Ptnml(0-2): 609, 20845, 45451, 20958, 585 https://tests.stockfishchess.org/tests/view/68e5e48ba017f472e763dd21 Passed non-regression LTC LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 77682 W: 20046 L: 19884 D: 37752 Ptnml(0-2): 41, 8404, 21786, 8572, 38 https://tests.stockfishchess.org/tests/view/68ee71e328e6d77fcff9fd68 closes https://github.com/official-stockfish/Stockfish/pull/6374 bench 2101654
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