Dev Builds » 20251130-2043

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 06:35:46 581827 3914 1657 402 1855 +115.48 ± 4.7 2 43 629 1264 19 +259.1 ± 13.56
ncm-dbt-02 06:37:25 585777 3904 1673 394 1837 +118.18 ± 4.6 0 34 627 1269 22 +265.75 ± 13.55
ncm-dbt-03 07:25:51 585159 4396 1888 413 2095 +121.27 ± 4.38 0 42 669 1457 30 +273.87 ± 13.14
ncm-dbt-04 06:37:41 567405 3888 1674 372 1842 +121.02 ± 4.62 0 33 602 1283 26 +273.23 ± 13.84
ncm-dbt-05 06:38:31 584021 3898 1648 429 1821 +112.42 ± 4.67 0 40 672 1215 22 +248.62 ± 13.07
20000 8540 2010 9450 +117.75 ± 2.05 2 192 3199 6488 119 +264.18 ± 6.0

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
443802 ncm-dbt-04 565941 388 165 38 185 +118.07 ± 13.61 0 2 63 129 0 +272.17 ± 42.99
443801 ncm-dbt-05 583824 398 162 40 196 +110.04 ± 15.49 0 7 66 123 3 +239.73 ± 42.32
443800 ncm-dbt-03 586097 396 164 32 200 +120.41 ± 14.75 0 4 61 130 3 +270.28 ± 44.02
443799 ncm-dbt-02 585970 404 168 39 197 +114.96 ± 13.62 0 2 70 129 1 +259.71 ± 40.59
443798 ncm-dbt-01 580696 414 179 40 195 +121.35 ± 13.59 0 3 63 140 1 +279.59 ± 43.21
443797 ncm-dbt-04 569669 500 205 40 255 +119.11 ± 13.17 0 6 76 165 3 +268.17 ± 39.39
443796 ncm-dbt-03 587537 500 220 36 244 +134.15 ± 12.27 0 3 63 181 3 +318.25 ± 43.39
443795 ncm-dbt-05 583866 500 210 62 228 +106.01 ± 12.71 0 5 93 151 1 +234.38 ± 35.22
443794 ncm-dbt-02 585717 500 211 50 239 +116.0 ± 12.47 0 4 82 163 1 +263.42 ± 37.69
443793 ncm-dbt-01 578753 500 212 47 241 +119.11 ± 12.62 0 4 79 165 2 +270.57 ± 38.47
443792 ncm-dbt-04 566257 500 216 49 235 +120.67 ± 12.78 0 4 78 165 3 +273.0 ± 38.74
443791 ncm-dbt-02 583740 500 217 49 234 +121.45 ± 12.58 0 3 79 165 3 +275.45 ± 38.39
443790 ncm-dbt-05 583321 500 227 60 213 +120.67 ± 13.15 0 4 80 161 5 +268.17 ± 38.21
443789 ncm-dbt-03 587749 500 211 42 247 +122.24 ± 12.19 0 1 82 164 3 +277.93 ± 37.36
443788 ncm-dbt-01 581860 500 218 55 227 +117.55 ± 12.46 0 4 80 165 1 +268.17 ± 38.21
443787 ncm-dbt-04 566612 500 209 45 246 +118.33 ± 12.06 0 3 80 167 0 +273.0 ± 38.12
443786 ncm-dbt-05 585548 500 209 53 238 +112.14 ± 13.22 0 7 82 159 2 +249.64 ± 37.86
443785 ncm-dbt-01 582861 500 212 62 226 +107.54 ± 14.21 1 7 88 149 5 +232.26 ± 36.48
443784 ncm-dbt-02 585548 500 212 44 244 +121.45 ± 12.95 0 4 78 164 4 +273.0 ± 38.74
443783 ncm-dbt-03 585970 500 220 53 227 +120.67 ± 13.32 0 7 72 168 3 +273.0 ± 40.54
443782 ncm-dbt-05 579826 500 218 57 225 +116.0 ± 13.2 0 5 83 158 4 +256.44 ± 37.51
443781 ncm-dbt-03 582945 500 218 48 234 +123.02 ± 13.29 0 6 72 168 4 +277.93 ± 40.53
443780 ncm-dbt-02 587452 500 209 59 232 +107.54 ± 13.4 0 8 86 154 2 +236.51 ± 36.93
443779 ncm-dbt-04 567363 500 219 47 234 +124.6 ± 12.71 0 3 76 167 4 +282.94 ± 39.21
443778 ncm-dbt-01 584076 500 201 48 251 +109.83 ± 13.05 0 7 84 158 1 +245.2 ± 37.37
443733 ncm-dbt-03 584958 500 214 48 238 +119.89 ± 14.19 0 9 72 163 6 +263.42 ± 40.52
443732 ncm-dbt-04 567878 500 229 62 209 +120.67 ± 13.32 0 4 81 159 6 +265.78 ± 37.95
443731 ncm-dbt-02 584034 500 217 46 237 +123.81 ± 12.16 0 1 80 166 3 +282.94 ± 37.88
443730 ncm-dbt-05 581361 500 197 54 249 +102.22 ± 13.04 0 6 97 145 2 +221.9 ± 34.46
443729 ncm-dbt-01 581569 500 212 41 247 +123.81 ± 12.73 0 3 77 166 4 +280.42 ± 38.93
443728 ncm-dbt-03 584159 500 208 57 235 +108.3 ± 13.73 0 7 90 148 5 +232.26 ± 35.99
443727 ncm-dbt-02 587197 500 224 51 225 +125.38 ± 12.89 0 4 73 169 4 +285.49 ± 40.16
443726 ncm-dbt-04 566336 500 222 42 236 +130.94 ± 14.04 0 8 61 174 7 +295.94 ± 44.08
443725 ncm-dbt-05 584159 500 215 52 233 +117.55 ± 12.82 0 4 82 161 3 +263.42 ± 37.69
443724 ncm-dbt-01 582444 500 215 55 230 +115.23 ± 14.05 1 9 71 167 2 +261.07 ± 40.78
443723 ncm-dbt-03 584369 500 209 48 243 +116.0 ± 12.47 0 2 88 157 3 +258.75 ± 36.04
443722 ncm-dbt-02 586562 500 215 56 229 +114.45 ± 13.72 0 8 79 159 4 +251.89 ± 38.63
443721 ncm-dbt-04 569190 500 209 49 242 +115.22 ± 12.67 0 3 87 157 3 +256.44 ± 36.38
443720 ncm-dbt-03 582652 500 224 49 227 +126.97 ± 11.88 0 3 69 178 0 +301.33 ± 41.33
443719 ncm-dbt-01 582360 500 208 54 238 +110.6 ± 13.22 0 6 87 154 3 +243.0 ± 36.62
443718 ncm-dbt-05 590267 500 210 51 239 +114.45 ± 12.3 0 2 89 157 2 +256.44 ± 35.8

Commit

Commit ID 93f2d14d95ca72ec2ec96c6e3de0b9a6121fe118
Author Shawn Xu
Date 2025-11-30 20:43:54 UTC
Simplify Incremental Updates Passed Non-regression STC: LLR: 3.03 (-2.94,2.94) <-1.75,0.25> Total: 277856 W: 71575 L: 71611 D: 134670 Ptnml(0-2): 842, 30719, 75836, 30695, 836 https://tests.stockfishchess.org/tests/view/69169dc17ca8781852331d76 Supersedes #6430 closes https://github.com/official-stockfish/Stockfish/pull/6434 No functional change
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