Dev Builds » 20260419-1026

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 06:39:46 581925 4000 1727 365 1908 +123.22 ± 4.52 0 36 588 1354 22 +281.68 ± 14.03
ncm-dbt-02 06:40:30 586493 4000 1775 327 1898 +131.74 ± 4.5 0 22 550 1386 42 +303.38 ± 14.48
ncm-dbt-03 06:39:16 584573 4000 1769 347 1884 +129.15 ± 4.47 1 23 561 1383 32 +298.28 ± 14.34
ncm-dbt-04 06:40:00 566906 4000 1745 331 1924 +128.36 ± 4.41 0 29 549 1401 21 +298.96 ± 14.52
ncm-dbt-05 06:40:26 581159 4000 1790 364 1846 +129.55 ± 4.52 1 26 554 1384 35 +298.62 ± 14.45
20000 8806 1734 9460 +128.4 ± 2.01 2 136 2802 6908 152 +296.07 ± 6.42

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
464912 ncm-dbt-05 578342 500 226 42 232 +134.15 ± 11.86 0 2 64 182 2 +321.19 ± 42.95
464911 ncm-dbt-04 564840 500 220 45 235 +126.97 ± 12.28 0 4 68 177 1 +298.62 ± 41.71
464910 ncm-dbt-02 586604 500 221 41 238 +130.94 ± 12.95 0 1 76 165 8 +293.29 ± 38.98
464909 ncm-dbt-01 577602 500 218 49 233 +122.24 ± 13.48 0 7 71 168 4 +275.45 ± 40.84
464908 ncm-dbt-03 582736 500 216 31 253 +134.95 ± 12.64 0 4 61 181 4 +318.25 ± 44.18
464907 ncm-dbt-01 580779 500 218 49 233 +122.24 ± 12.94 0 6 71 171 2 +280.42 ± 40.83
464906 ncm-dbt-05 583866 500 228 40 232 +137.37 ± 13.71 0 6 58 178 8 +315.35 ± 45.33
464905 ncm-dbt-02 586181 500 222 47 231 +126.97 ± 12.85 0 4 71 171 4 +290.66 ± 40.76
464904 ncm-dbt-04 562690 500 214 46 240 +121.45 ± 13.31 0 7 71 169 3 +275.45 ± 40.84
464903 ncm-dbt-03 583196 500 225 35 240 +138.99 ± 12.3 0 2 61 182 5 +330.23 ± 44.08
464902 ncm-dbt-05 582694 500 222 53 225 +122.24 ± 12.57 0 3 78 166 3 +277.93 ± 38.66
464901 ncm-dbt-04 567522 500 222 52 226 +123.02 ± 12.74 0 1 84 159 6 +273.0 ± 36.86
464900 ncm-dbt-02 586646 500 227 44 229 +133.34 ± 13.08 0 4 65 175 6 +306.84 ± 42.73
464899 ncm-dbt-01 584369 500 217 44 239 +125.38 ± 12.12 0 3 72 174 1 +293.29 ± 40.39
464898 ncm-dbt-03 585885 500 229 52 219 +128.55 ± 14.26 0 8 65 169 8 +285.49 ± 42.7
464897 ncm-dbt-01 582318 500 214 50 236 +118.33 ± 12.63 0 5 77 167 1 +270.57 ± 39.07
464896 ncm-dbt-05 576496 500 226 48 226 +129.35 ± 12.99 0 4 69 172 5 +295.94 ± 41.39
464895 ncm-dbt-04 566099 500 223 45 232 +129.35 ± 12.21 0 3 68 177 2 +304.07 ± 41.65
464894 ncm-dbt-02 587919 500 221 48 231 +125.38 ± 12.89 0 3 76 166 5 +282.94 ± 39.21
464893 ncm-dbt-03 585211 500 222 48 230 +126.18 ± 13.06 1 3 70 173 3 +293.29 ± 41.07
464892 ncm-dbt-04 568912 500 216 35 249 +131.74 ± 12.14 0 3 65 180 2 +312.48 ± 42.67
464891 ncm-dbt-03 582945 500 224 50 226 +126.17 ± 12.49 0 2 76 168 4 +288.06 ± 39.11
464890 ncm-dbt-05 583447 500 225 36 239 +138.18 ± 11.91 0 2 60 185 3 +333.32 ± 44.47
464889 ncm-dbt-01 584579 500 221 39 240 +132.54 ± 12.12 0 1 70 175 4 +309.64 ± 40.79
464888 ncm-dbt-02 586435 500 225 32 243 +141.43 ± 11.09 0 0 59 189 2 +349.43 ± 44.59
464887 ncm-dbt-03 584034 500 215 44 241 +123.81 ± 11.76 0 1 78 170 1 +288.06 ± 38.42
464886 ncm-dbt-04 569111 500 220 36 244 +134.15 ± 12.27 0 5 57 187 1 +324.17 ± 45.77
464885 ncm-dbt-05 579083 500 225 53 222 +124.6 ± 13.97 1 4 74 164 7 +277.93 ± 39.92
464884 ncm-dbt-01 583908 500 208 38 254 +123.02 ± 13.29 0 6 72 168 4 +277.93 ± 40.53
464883 ncm-dbt-02 585885 500 224 41 235 +133.34 ± 13.08 0 2 71 169 8 +301.33 ± 40.6
464882 ncm-dbt-03 584664 500 220 41 239 +130.14 ± 12.19 0 3 67 178 2 +306.84 ± 41.99
464881 ncm-dbt-04 566651 500 214 41 245 +125.38 ± 12.32 0 3 73 172 2 +290.66 ± 40.08
464880 ncm-dbt-05 583321 500 218 44 238 +126.17 ± 12.68 0 3 74 169 4 +288.06 ± 39.79
464879 ncm-dbt-02 585674 500 223 40 237 +133.34 ± 13.08 0 5 62 178 5 +309.64 ± 43.82
464878 ncm-dbt-01 581319 500 221 52 227 +122.24 ± 12.76 0 4 76 167 3 +277.93 ± 39.29
464877 ncm-dbt-03 587919 500 218 46 236 +124.59 ± 12.33 0 0 83 162 5 +280.42 ± 36.95
464876 ncm-dbt-04 569430 500 216 31 253 +134.95 ± 12.44 0 3 63 180 4 +318.25 ± 43.39
464875 ncm-dbt-02 586604 500 212 34 254 +129.35 ± 12.61 0 3 70 173 4 +298.62 ± 41.01
464874 ncm-dbt-05 582027 500 220 48 232 +124.6 ± 12.33 0 2 77 168 3 +285.49 ± 38.83
464873 ncm-dbt-01 580530 500 210 44 246 +119.89 ± 12.79 0 4 79 164 3 +270.57 ± 38.47

Commit

Commit ID edfd021257458d6d2828821531be8fa9b61e00fa
Author Joost VandeVondele
Date 2026-04-19 10:26:47 UTC
[CI] Cleanup artifact content removes temp_builds directory before packaging closes https://github.com/official-stockfish/Stockfish/pull/6745 No functional change
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