Dev Builds » 20260922-1601

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 06:45:16 582876 4008 1826 310 1872 +138.28 ± 4.39 0 16 500 1444 44 +326.07 ± 15.2
ncm-dbt-02 06:43:18 590754 4000 1841 304 1855 +140.72 ± 4.38 0 17 475 1462 46 +334.49 ± 15.61
ncm-dbt-03 06:46:01 583201 3994 1829 294 1871 +140.75 ± 4.48 0 20 475 1449 53 +331.86 ± 15.62
ncm-dbt-04 06:44:14 568023 4000 1830 303 1867 +139.71 ± 4.44 0 27 460 1472 41 +332.55 ± 15.9
ncm-dbt-05 06:45:57 609523 3998 1834 279 1885 +142.64 ± 4.48 0 18 466 1457 58 +337.15 ± 15.77
20000 9160 1490 9350 +140.42 ± 1.98 0 98 2376 7284 242 +332.39 ± 6.97

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
485942 ncm-dbt-01 584285 8 4 0 4 +190.56 ± 13.88 0 0 0 4 0 +1199.83 ± 250.99 ↓
485941 ncm-dbt-03 583866 494 220 36 238 +135.94 ± 12.08 0 1 65 177 4 +321.74 ± 42.46 ↓
485940 ncm-dbt-04 568077 500 222 42 236 +130.94 ± 12.17 0 1 72 173 4 +304.07 ± 40.16 ↓
485939 ncm-dbt-05 658759 498 223 31 244 +141.25 ± 11.8 0 1 59 185 4 +342.06 ± 44.76 ↓
485938 ncm-dbt-02 588472 500 226 31 243 +143.07 ± 12.12 0 1 59 184 6 +342.85 ± 44.76 ↓
485937 ncm-dbt-01 585042 500 231 45 224 +135.76 ± 12.01 0 1 66 179 4 +321.19 ± 42.12 ↓
485936 ncm-dbt-04 567997 500 227 31 242 +143.89 ± 11.42 0 1 55 191 3 +356.21 ± 46.49 ↓
485935 ncm-dbt-05 606607 500 223 41 236 +132.54 ± 12.71 0 2 70 172 6 +304.07 ± 40.91 ↓
485934 ncm-dbt-02 590610 500 229 41 230 +137.37 ± 12.15 0 2 62 182 4 +327.18 ± 43.69 ↓
485933 ncm-dbt-03 582652 500 222 37 241 +134.95 ± 12.64 0 4 61 181 4 +318.25 ± 44.18 ↓
485932 ncm-dbt-01 584453 500 219 36 245 +133.34 ± 13.08 0 2 71 169 8 +301.33 ± 40.6 ↓
485931 ncm-dbt-04 567522 500 232 34 234 +145.54 ± 12.22 0 2 54 188 6 +352.8 ± 47.05 ↓
485930 ncm-dbt-05 601580 500 238 28 234 +155.54 ± 12.11 0 2 44 196 8 +389.56 ± 52.48 ↓
485929 ncm-dbt-03 581818 500 228 33 239 +143.07 ± 11.91 0 1 58 186 5 +346.12 ± 45.18 ↓
485928 ncm-dbt-02 591254 500 233 34 233 +146.36 ± 12.61 0 3 52 188 7 +352.8 ± 48.05 ↓
485927 ncm-dbt-01 579413 500 232 42 226 +138.99 ± 11.88 0 1 62 183 4 +333.32 ± 43.57 ↓
485926 ncm-dbt-04 568752 500 228 40 232 +137.37 ± 12.56 0 4 58 184 4 +327.18 ± 45.37 ↓
485925 ncm-dbt-05 599274 500 227 32 241 +143.07 ± 13.15 0 2 61 177 10 +330.23 ± 44.08 ↓
485924 ncm-dbt-03 583196 500 227 38 235 +138.18 ± 13.32 0 4 61 177 8 +318.25 ± 44.18 ↓
485923 ncm-dbt-02 591555 500 225 36 239 +138.18 ± 12.53 0 4 57 185 4 +330.23 ± 45.79 ↓
485922 ncm-dbt-01 582193 500 230 38 232 +140.62 ± 13.04 0 2 63 176 9 +324.17 ± 43.32 ↓
485921 ncm-dbt-04 569470 500 242 45 213 +144.71 ± 13.28 0 2 60 177 11 +333.32 ± 44.47 ↓
485920 ncm-dbt-03 583572 500 244 34 222 +155.54 ± 12.56 0 3 43 195 9 +385.59 ± 53.09 ↓
485919 ncm-dbt-05 601891 500 237 46 217 +139.81 ± 12.87 0 2 63 177 8 +324.17 ± 43.32 ↓
485918 ncm-dbt-02 590224 500 240 40 220 +147.19 ± 12.98 0 2 56 182 10 +346.12 ± 46.15 ↓
485917 ncm-dbt-01 583447 500 222 34 244 +137.37 ± 12.56 0 1 67 175 7 +318.25 ± 41.77 ↓
485916 ncm-dbt-04 567205 500 231 37 232 +142.25 ± 12.98 0 7 46 193 4 +346.12 ± 50.75 ↓
485915 ncm-dbt-03 583405 500 223 39 238 +134.15 ± 13.24 0 3 68 171 8 +304.07 ± 41.65 ↓
485914 ncm-dbt-05 604712 500 238 27 235 +156.38 ± 11.83 0 0 48 193 9 +389.55 ± 49.86 ↓
485913 ncm-dbt-02 593846 500 233 41 226 +140.62 ± 12.23 0 2 59 184 5 +336.46 ± 44.87 ↓
485912 ncm-dbt-01 580696 500 230 39 231 +139.81 ± 12.47 0 3 58 184 5 +333.32 ± 45.35 ↓
485911 ncm-dbt-02 591599 500 229 29 242 +147.19 ± 12.36 0 2 53 188 7 +356.21 ± 47.52 ↓
485910 ncm-dbt-04 567324 500 218 33 249 +134.95 ± 12.84 0 5 59 182 4 +318.25 ± 44.96 ↓
485909 ncm-dbt-03 583196 500 234 38 228 +143.89 ± 12.92 0 3 56 183 8 +339.63 ± 46.2 ↓
485908 ncm-dbt-05 604667 500 222 43 235 +130.14 ± 13.52 0 4 71 167 8 +290.66 ± 40.76 ↓
485907 ncm-dbt-01 584790 500 227 39 234 +137.37 ± 11.29 0 2 58 190 0 +339.63 ± 45.29 ↓
485906 ncm-dbt-02 588472 500 226 52 222 +126.17 ± 12.1 0 1 77 169 3 +290.66 ± 38.7 ↓
485905 ncm-dbt-04 567839 500 230 41 229 +138.18 ± 12.93 0 5 56 184 5 +327.18 ± 46.19 ↓
485904 ncm-dbt-03 583908 500 231 39 230 +140.62 ± 12.44 0 1 63 179 7 +330.23 ± 43.2 ↓
485903 ncm-dbt-01 581569 500 231 37 232 +142.25 ± 12.98 0 4 55 184 7 +336.46 ± 46.65 ↓
485902 ncm-dbt-05 598700 500 226 31 243 +143.07 ± 12.75 0 5 50 190 5 +346.12 ± 48.95 ↓

Commit

Commit ID b69fd13039a734b5bb850c4c3d890314ccb8d432
Author mstembera
Date 2026-09-22 16:01:30 UTC
Use LLD w/ Clang for Universal builds I recently reset my Windows machine toolchain and the Clang built universal binaries started crashing. The fix is to have the Makefile add ```-fuse-ld=lld``` to the final link for Windows Clang universal builds. This uses LLVM’s linker instead of GNU’s linker, which produced a crashing executable from the same object files. I don't know why it didn't show up for me before but most likely my old Clang installation used LLD by default so the Makefile didn't need to specify it. closes https://github.com/official-stockfish/Stockfish/pull/7185 No functional change
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