Dev Builds » 20260118-0753

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 06:43:33 580515 4000 1734 365 1901 +123.91 ± 4.48 0 31 592 1354 23 +283.58 ± 13.96
ncm-dbt-02 06:47:57 586199 4034 1730 356 1948 +123.26 ± 4.54 2 34 593 1364 24 +281.87 ± 13.97
ncm-dbt-03 06:43:56 586684 3994 1726 382 1886 +121.65 ± 4.57 1 32 614 1322 28 +275.14 ± 13.7
ncm-dbt-04 06:44:41 566598 4000 1712 379 1909 +120.38 ± 4.51 0 36 614 1331 19 +273.61 ± 13.71
ncm-dbt-05 06:43:50 583159 3972 1715 393 1864 +120.22 ± 4.67 2 39 607 1311 27 +271.22 ± 13.81
20000 8617 1875 9508 +121.89 ± 2.04 5 172 3020 6682 121 +277.06 ± 6.18

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
450819 ncm-dbt-02 586308 34 16 4 14 +128.1 ± 43.35 0 0 5 12 0 +305.3 ± 185.94
450818 ncm-dbt-05 582945 472 192 62 218 +98.23 ± 13.65 0 8 91 136 1 +213.16 ± 35.75
450817 ncm-dbt-03 585885 494 208 51 235 +114.38 ± 12.76 0 3 87 154 3 +253.86 ± 36.36
450816 ncm-dbt-01 582110 500 215 44 241 +123.81 ± 13.81 0 7 71 166 6 +275.45 ± 40.84
450815 ncm-dbt-04 566770 500 213 46 241 +120.67 ± 12.78 0 5 75 168 2 +275.45 ± 39.63
450814 ncm-dbt-02 583950 500 214 36 250 +129.35 ± 11.81 0 1 72 175 2 +304.07 ± 40.16
450813 ncm-dbt-05 578959 500 223 59 218 +118.33 ± 13.7 0 7 77 161 5 +261.07 ± 39.14
450812 ncm-dbt-03 585506 500 221 45 234 +127.76 ± 12.26 0 2 73 172 3 +295.94 ± 39.99
450811 ncm-dbt-01 579868 500 211 50 239 +116.0 ± 12.29 0 3 84 162 1 +263.42 ± 37.11
450810 ncm-dbt-04 568872 500 215 49 236 +119.89 ± 12.61 0 5 75 169 1 +275.45 ± 39.63
450809 ncm-dbt-02 586350 500 214 41 245 +125.38 ± 12.32 0 3 73 172 2 +290.66 ± 40.08
450808 ncm-dbt-05 585042 500 219 33 248 +135.75 ± 12.01 0 0 69 176 5 +318.25 ± 40.94
450807 ncm-dbt-03 586477 500 224 42 234 +132.54 ± 11.27 0 0 69 180 1 +318.25 ± 40.94
450806 ncm-dbt-01 581111 500 216 33 251 +133.34 ± 12.29 0 3 64 180 3 +315.35 ± 43.03
450805 ncm-dbt-04 567601 500 222 45 233 +128.55 ± 12.24 0 3 69 176 2 +301.33 ± 41.33
450804 ncm-dbt-02 586181 500 217 36 247 +131.74 ± 12.74 0 4 65 177 4 +306.84 ± 42.73
450803 ncm-dbt-05 580779 500 214 45 241 +122.24 ± 12.76 0 6 70 173 1 +282.94 ± 41.13
450802 ncm-dbt-03 584285 500 220 48 232 +124.6 ± 12.14 0 1 79 167 3 +285.49 ± 38.15
450801 ncm-dbt-01 580157 500 217 46 237 +123.81 ± 12.54 0 4 73 171 2 +285.49 ± 40.16
450800 ncm-dbt-04 563626 500 216 48 236 +121.45 ± 12.95 0 4 78 164 4 +273.0 ± 38.74
450799 ncm-dbt-02 585295 500 216 52 232 +118.33 ± 13.52 1 6 73 168 2 +270.57 ± 40.25
450798 ncm-dbt-05 582987 500 208 39 253 +122.24 ± 12.76 1 2 76 169 2 +282.94 ± 39.21
450797 ncm-dbt-03 584958 500 227 55 218 +124.6 ± 13.62 0 5 75 163 7 +275.45 ± 39.63
450796 ncm-dbt-01 578918 500 222 50 228 +124.6 ± 12.71 0 5 70 173 2 +288.06 ± 41.11
450795 ncm-dbt-04 568156 500 214 58 228 +112.14 ± 12.87 0 5 86 157 2 +249.64 ± 36.79
450794 ncm-dbt-02 586562 500 220 47 233 +125.38 ± 13.07 0 4 74 167 5 +282.94 ± 39.86
450793 ncm-dbt-03 589112 500 209 41 250 +121.45 ± 13.66 0 8 70 168 4 +273.0 ± 41.13
450792 ncm-dbt-05 579289 500 224 51 225 +125.38 ± 13.61 0 5 74 164 7 +277.93 ± 39.92
450791 ncm-dbt-01 577192 500 222 45 233 +128.55 ± 12.82 0 3 72 170 5 +293.29 ± 40.39
450790 ncm-dbt-04 567284 500 209 47 244 +116.77 ± 13.19 0 6 79 162 3 +261.07 ± 38.58
450789 ncm-dbt-02 586731 500 203 44 253 +114.45 ± 12.85 1 4 80 165 0 +263.42 ± 38.27
450788 ncm-dbt-05 580779 500 224 57 219 +120.67 ± 13.84 1 6 72 167 4 +273.0 ± 40.54
450787 ncm-dbt-03 586689 500 209 53 238 +112.14 ± 14.38 1 9 77 159 4 +247.41 ± 39.15
450786 ncm-dbt-01 580862 500 219 55 226 +118.33 ± 12.44 0 3 82 163 2 +268.17 ± 37.61
450785 ncm-dbt-04 566849 500 212 47 241 +119.11 ± 12.8 0 3 83 160 4 +265.78 ± 37.35
450784 ncm-dbt-02 584622 500 211 54 235 +112.91 ± 14.22 0 10 78 157 5 +245.2 ± 38.89
450783 ncm-dbt-05 594497 500 211 47 242 +118.33 ± 12.81 0 5 78 165 2 +268.17 ± 38.8
450782 ncm-dbt-03 590567 500 208 47 245 +116.0 ± 12.84 0 4 84 159 3 +258.75 ± 37.2
450781 ncm-dbt-01 583908 500 212 42 246 +123.02 ± 12.37 0 3 76 169 2 +282.94 ± 39.21
450780 ncm-dbt-04 563626 500 211 39 250 +124.6 ± 12.53 0 5 69 175 1 +290.66 ± 41.43
450779 ncm-dbt-02 589796 500 219 42 239 +128.55 ± 12.43 0 2 73 171 4 +295.94 ± 39.99

Commit

Commit ID f61d4317a325db1e1489bcd257f94ef605db0244
Author anematode
Date 2026-01-18 07:53:06 UTC
use default signal handler after cleanup With the current setup, on Linux, SIGILL (and SIGSEGV/SIGBUS etc., in the case of a program bug) lead to no feedback if they occur after the signal handlers are installed, they just exit silently. By invoking the default signal handler, we can still get the appropriate feedback. This is particularly important for feedback if someone downloads the wrong SF binary and runs it on Linux. closes https://github.com/official-stockfish/Stockfish/pull/6554 No functional change
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