Dev Builds » 20260128-1928

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 06:44:27 582876 4004 1728 388 1888 +120.93 ± 4.5 0 27 636 1311 28 +272.6 ± 13.43
ncm-dbt-02 06:42:50 586120 4000 1710 391 1899 +119.01 ± 4.57 0 36 635 1303 26 +267.27 ± 13.47
ncm-dbt-03 06:43:54 585111 4004 1717 408 1879 +117.91 ± 4.57 0 39 638 1302 23 +264.81 ± 13.45
ncm-dbt-04 06:43:05 566758 4000 1745 364 1891 +125.09 ± 4.58 0 39 569 1364 28 +285.81 ± 14.28
ncm-dbt-05 06:45:14 582712 3992 1727 389 1876 +121.13 ± 4.62 0 41 603 1325 27 +273.5 ± 13.86
20000 8627 1940 9433 +120.81 ± 2.04 0 182 3081 6605 132 +272.7 ± 6.12

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
452907 ncm-dbt-01 582861 4 1 0 3 +88.51 ± 137.63 0 0 1 1 0 +190.5 ± 634.21
452906 ncm-dbt-03 580240 4 1 0 3 +88.51 ± 137.63 0 0 1 1 0 +190.5 ± 634.21
452905 ncm-dbt-05 580116 492 201 44 247 +114.88 ± 13.51 0 7 78 158 3 +255.31 ± 38.87
452904 ncm-dbt-03 584117 500 211 40 249 +123.81 ± 13.46 0 6 72 167 5 +277.93 ± 40.53
452903 ncm-dbt-01 583028 500 220 66 214 +110.6 ± 12.52 0 3 92 153 2 +245.2 ± 35.25
452902 ncm-dbt-02 586901 500 196 42 262 +110.6 ± 13.22 0 7 84 157 2 +245.2 ± 37.37
452901 ncm-dbt-04 566493 500 222 47 231 +126.97 ± 13.04 0 5 69 172 4 +290.66 ± 41.43
452900 ncm-dbt-05 582402 500 220 44 236 +127.76 ± 12.26 0 4 67 178 1 +301.33 ± 42.04
452899 ncm-dbt-02 585169 500 220 44 236 +127.76 ± 12.06 0 2 72 174 2 +298.62 ± 40.29
452898 ncm-dbt-03 586266 500 210 58 232 +109.07 ± 13.56 0 9 82 157 2 +240.82 ± 37.9
452897 ncm-dbt-01 583196 500 209 40 251 +122.24 ± 13.12 0 3 81 160 6 +270.57 ± 37.86
452896 ncm-dbt-04 567324 500 223 48 229 +126.97 ± 12.66 0 6 64 179 1 +298.62 ± 43.1
452895 ncm-dbt-05 578794 500 231 53 216 +129.35 ± 13.54 0 4 72 166 8 +288.06 ± 40.46
452894 ncm-dbt-01 581902 500 211 49 240 +116.77 ± 12.47 0 3 84 161 2 +263.42 ± 37.11
452893 ncm-dbt-03 587877 500 224 51 225 +125.38 ± 12.7 0 2 78 165 5 +282.94 ± 38.55
452892 ncm-dbt-02 586054 500 212 60 228 +109.07 ± 13.23 0 7 86 155 2 +240.82 ± 36.9
452891 ncm-dbt-04 568037 500 216 38 246 +129.35 ± 13.17 0 5 67 173 5 +295.94 ± 42.08
452890 ncm-dbt-05 581818 500 206 51 243 +111.37 ± 13.22 0 7 83 158 2 +247.41 ± 37.61
452889 ncm-dbt-01 582861 500 222 49 229 +125.38 ± 12.12 0 1 78 168 3 +288.06 ± 38.42
452888 ncm-dbt-03 585084 500 220 51 229 +122.24 ± 12.76 0 6 70 173 1 +282.94 ± 41.13
452887 ncm-dbt-04 569190 500 213 41 246 +124.6 ± 12.71 0 3 76 167 4 +282.94 ± 39.21
452886 ncm-dbt-02 585970 500 221 52 227 +122.24 ± 13.48 0 4 80 159 7 +268.17 ± 38.21
452885 ncm-dbt-05 581818 500 226 39 235 +136.56 ± 12.18 0 2 63 181 4 +324.17 ± 43.32
452884 ncm-dbt-01 581818 500 223 52 225 +123.81 ± 13.46 0 5 75 164 6 +275.45 ± 39.63
452883 ncm-dbt-02 587282 500 210 52 238 +113.68 ± 12.86 0 4 87 156 3 +251.89 ± 36.48
452882 ncm-dbt-03 587325 500 205 53 242 +109.07 ± 12.7 0 4 92 152 2 +240.82 ± 35.35
452881 ncm-dbt-04 565312 500 216 54 230 +116.77 ± 13.54 0 8 75 164 3 +261.07 ± 39.69
452880 ncm-dbt-05 583028 500 214 52 234 +116.77 ± 13.01 0 6 78 164 2 +263.42 ± 38.85
452879 ncm-dbt-03 583572 500 213 45 242 +121.45 ± 12.58 0 4 76 168 2 +277.93 ± 39.29
452878 ncm-dbt-02 588089 500 220 42 238 +129.35 ± 12.41 0 3 69 175 3 +301.33 ± 41.33
452877 ncm-dbt-04 567244 500 216 48 236 +121.45 ± 13.31 0 6 74 166 4 +273.0 ± 39.95
452876 ncm-dbt-01 583572 500 220 45 235 +126.97 ± 12.47 0 2 75 169 4 +290.66 ± 39.4
452875 ncm-dbt-05 579620 500 210 57 233 +109.83 ± 13.23 0 7 85 156 2 +243.0 ± 37.13
452874 ncm-dbt-02 583866 500 220 52 228 +121.45 ± 12.77 0 2 83 160 5 +270.57 ± 37.24
452873 ncm-dbt-03 584916 500 218 55 227 +117.55 ± 11.88 0 2 83 165 0 +270.57 ± 37.24
452872 ncm-dbt-04 564448 500 217 40 243 +128.55 ± 12.63 0 1 77 166 6 +290.66 ± 38.7
452871 ncm-dbt-01 582152 500 209 44 247 +119.11 ± 12.99 0 5 78 164 3 +268.17 ± 38.8
452870 ncm-dbt-03 586604 500 215 55 230 +115.22 ± 13.72 0 6 84 154 6 +249.64 ± 37.33
452869 ncm-dbt-02 585632 500 211 47 242 +118.33 ± 13.17 0 7 74 167 2 +268.17 ± 39.97
452868 ncm-dbt-05 594106 500 219 49 232 +123.02 ± 13.11 0 4 77 164 5 +275.45 ± 39.01
452867 ncm-dbt-01 584495 500 213 43 244 +123.02 ± 12.74 0 5 72 171 2 +282.94 ± 40.5
452866 ncm-dbt-04 566020 500 222 48 230 +126.17 ± 12.49 0 5 67 177 1 +295.94 ± 42.08

Commit

Commit ID 253aaefbc03fab2e0c2a0ed83c0abf0ee9be4f92
Author anematode
Date 2026-01-28 19:28:27 UTC
Fix compilation on BSD/macOS fixes github.com/official-stockfish/Stockfish/issues/6571 closes https://github.com/official-stockfish/Stockfish/pull/6572 No functional change
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