Dev Builds » 20260106-1102

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 06:45:13 581550 3998 1765 395 1838 +124.07 ± 4.67 0 37 595 1327 40 +278.76 ± 13.94
ncm-dbt-02 06:43:26 585635 4000 1730 383 1887 +121.75 ± 4.51 1 27 622 1324 26 +276.07 ± 13.59
ncm-dbt-03 06:44:48 585636 4006 1721 362 1923 +122.73 ± 4.57 0 36 601 1337 29 +277.93 ± 13.87
ncm-dbt-04 06:45:07 566979 4000 1720 361 1919 +122.93 ± 4.58 1 35 595 1342 27 +279.48 ± 13.94
ncm-dbt-05 06:44:46 580938 3996 1750 385 1861 +123.65 ± 4.48 0 23 617 1328 30 +280.53 ± 13.63
20000 8686 1886 9428 +123.02 ± 2.04 2 158 3030 6658 152 +278.55 ± 6.16

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
448998 ncm-dbt-03 584622 6 2 0 4 +120.22 ± 109.7 0 0 1 2 0 +279.24 ± 576.89
448997 ncm-dbt-05 582110 496 223 52 221 +124.89 ± 12.19 0 2 75 169 2 +289.0 ± 39.39
448996 ncm-dbt-01 584495 498 228 51 219 +129.12 ± 13.03 0 2 75 165 7 +289.83 ± 39.39
448995 ncm-dbt-04 567720 500 209 41 250 +121.45 ± 13.31 0 6 74 166 4 +273.0 ± 39.95
448994 ncm-dbt-03 586266 500 228 53 219 +126.97 ± 13.41 0 4 74 165 7 +282.94 ± 39.86
448993 ncm-dbt-02 585464 500 213 46 241 +120.67 ± 12.41 0 3 79 166 2 +275.45 ± 38.39
448992 ncm-dbt-05 582235 500 221 49 230 +124.6 ± 12.14 0 1 79 167 3 +285.49 ± 38.15
448991 ncm-dbt-01 580696 500 206 46 248 +115.22 ± 13.55 0 7 80 159 4 +254.16 ± 38.36
448990 ncm-dbt-03 582819 500 212 49 239 +117.55 ± 12.82 0 4 82 161 3 +263.42 ± 37.69
448989 ncm-dbt-04 567442 500 214 43 243 +123.81 ± 12.73 0 4 74 169 3 +282.94 ± 39.86
448988 ncm-dbt-02 587325 500 216 50 234 +119.89 ± 13.16 0 6 75 166 3 +270.57 ± 39.67
448987 ncm-dbt-05 582318 500 222 53 225 +122.24 ± 12.76 0 4 76 167 3 +277.93 ± 39.29
448986 ncm-dbt-01 581693 500 210 50 240 +115.22 ± 13.2 0 5 84 157 4 +254.16 ± 37.27
448985 ncm-dbt-03 586012 500 216 47 237 +122.24 ± 12.38 0 4 74 171 1 +282.94 ± 39.86
448984 ncm-dbt-04 568236 500 214 43 243 +123.81 ± 12.35 0 3 75 170 2 +285.49 ± 39.5
448983 ncm-dbt-02 587494 500 221 52 227 +122.24 ± 13.3 0 6 73 167 4 +275.45 ± 40.24
448982 ncm-dbt-01 577479 500 213 48 239 +119.11 ± 13.34 0 4 83 157 6 +261.07 ± 37.44
448981 ncm-dbt-05 577356 500 206 38 256 +121.45 ± 12.95 0 4 78 164 4 +273.0 ± 38.74
448980 ncm-dbt-03 584117 500 210 51 239 +114.45 ± 12.67 0 3 88 156 3 +254.16 ± 36.15
448979 ncm-dbt-04 565863 500 215 40 245 +126.97 ± 12.66 0 3 73 170 4 +290.66 ± 40.08
448978 ncm-dbt-02 583279 500 225 48 227 +128.55 ± 12.43 0 3 70 174 3 +298.62 ± 41.01
448977 ncm-dbt-05 581319 500 216 53 231 +117.55 ± 12.46 0 2 86 159 3 +263.42 ± 36.51
448976 ncm-dbt-03 587962 500 209 44 247 +119.11 ± 12.05 0 1 85 162 2 +270.57 ± 36.61
448975 ncm-dbt-01 580779 500 231 52 217 +130.14 ± 14.74 0 9 63 168 10 +285.49 ± 43.31
448974 ncm-dbt-04 567601 500 218 53 229 +119.11 ± 12.99 0 7 72 170 1 +273.0 ± 40.54
448973 ncm-dbt-02 585169 500 219 49 232 +123.02 ± 11.98 0 0 83 164 3 +280.42 ± 36.95
448972 ncm-dbt-01 583321 500 220 50 230 +123.02 ± 12.74 0 5 72 171 2 +282.94 ± 40.5
448971 ncm-dbt-03 588047 500 225 42 233 +133.34 ± 13.08 0 4 65 175 6 +306.84 ± 42.73
448970 ncm-dbt-05 577356 500 215 46 239 +122.24 ± 12.19 0 1 82 164 3 +277.93 ± 37.36
448969 ncm-dbt-02 586223 500 214 54 232 +115.22 ± 12.85 0 4 85 158 3 +256.44 ± 36.95
448968 ncm-dbt-04 566454 500 215 55 230 +115.22 ± 13.55 0 7 80 159 4 +254.16 ± 38.36
448967 ncm-dbt-01 583908 500 230 45 225 +134.95 ± 12.24 0 3 62 182 3 +321.19 ± 43.77
448966 ncm-dbt-05 578547 500 222 50 228 +124.6 ± 13.27 0 6 70 170 4 +282.94 ± 41.13
448965 ncm-dbt-03 584916 500 209 37 254 +124.6 ± 13.8 0 8 67 170 5 +280.42 ± 42.05
448964 ncm-dbt-04 564605 500 219 49 232 +123.02 ± 13.64 1 3 77 163 6 +275.45 ± 39.01
448963 ncm-dbt-02 585843 500 207 39 254 +121.45 ± 12.77 0 2 83 160 5 +270.57 ± 37.24
448962 ncm-dbt-01 580033 500 227 53 220 +126.17 ± 12.49 0 2 76 168 4 +288.06 ± 39.11
448961 ncm-dbt-03 585970 500 210 39 251 +123.81 ± 13.28 0 8 65 175 2 +285.49 ± 42.7
448960 ncm-dbt-02 584285 500 215 45 240 +123.02 ± 13.11 1 3 74 169 3 +282.94 ± 39.86
448959 ncm-dbt-05 586266 500 225 44 231 +131.74 ± 13.3 0 3 71 168 8 +295.94 ± 40.69
448958 ncm-dbt-04 567918 500 216 37 247 +130.14 ± 12.19 0 2 70 175 3 +304.07 ± 40.91

Commit

Commit ID 8be6b142189dfaa4fdee979d863a53522ca46b32
Author anematode
Date 2026-01-06 11:02:37 UTC
Network loading refactoring closes https://github.com/official-stockfish/Stockfish/pull/6523 No functional change
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