Dev Builds » 20260824-1627

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 06:48:05 583861 3992 1803 311 1878 +136.46 ± 4.45 0 20 508 1424 44 +319.31 ± 15.09
ncm-dbt-02 06:48:41 590618 4006 1808 293 1905 +138.26 ± 4.29 0 17 486 1468 32 +330.53 ± 15.43
ncm-dbt-03 06:47:43 576873 3998 1817 295 1886 +139.28 ± 4.26 0 15 479 1473 32 +334.39 ± 15.54
ncm-dbt-04 06:49:21 567076 4004 1790 306 1908 +135.21 ± 4.45 0 21 518 1421 42 +315.55 ± 14.94
ncm-dbt-05 06:48:21 604191 4000 1830 325 1845 +137.47 ± 4.51 1 17 510 1420 52 +320.45 ± 15.05
20000 9048 1530 9422 +137.33 ± 1.97 1 90 2501 7206 202 +323.94 ± 6.79

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
483695 ncm-dbt-04 564880 4 2 1 1 +88.51 ± 137.63 0 0 1 1 0 +190.5 ± 634.21
483694 ncm-dbt-02 589283 6 2 1 3 +58.33 ± 98.71 0 0 2 1 0 +120.24 ± 264.77
483693 ncm-dbt-01 584537 492 228 32 232 +146.52 ± 12.52 0 3 50 187 6 +356.52 ± 49.04
483692 ncm-dbt-03 579331 498 230 40 228 +139.61 ± 12.09 0 0 65 178 6 +329.42 ± 42.3
483691 ncm-dbt-05 598171 500 228 46 226 +132.54 ± 12.32 0 2 68 176 4 +309.64 ± 41.56
483690 ncm-dbt-04 566770 500 228 41 231 +136.56 ± 12.79 0 1 69 172 8 +312.48 ± 41.11
483689 ncm-dbt-02 591599 500 227 36 237 +139.81 ± 12.26 0 3 57 186 4 +336.46 ± 45.77
483688 ncm-dbt-01 584076 500 228 39 233 +138.18 ± 12.12 0 1 64 180 5 +327.18 ± 42.83
483687 ncm-dbt-05 606200 500 229 33 238 +143.89 ± 12.92 0 1 62 177 10 +333.32 ± 43.57
483686 ncm-dbt-03 575883 500 237 41 222 +143.89 ± 11.65 0 1 56 189 4 +352.8 ± 46.04
483685 ncm-dbt-02 593196 500 227 37 236 +138.99 ± 12.7 0 2 63 178 7 +324.17 ± 43.32
483684 ncm-dbt-04 568077 500 221 33 246 +137.37 ± 12.15 0 1 65 179 5 +324.17 ± 42.47
483683 ncm-dbt-05 607514 500 233 43 224 +138.99 ± 12.9 0 2 64 176 8 +321.19 ± 42.95
483682 ncm-dbt-01 583614 500 226 43 231 +133.34 ± 12.69 0 5 60 182 3 +315.35 ± 44.57
483681 ncm-dbt-03 576701 500 225 38 237 +136.56 ± 11.97 0 2 62 183 3 +327.18 ± 43.69
483680 ncm-dbt-04 566572 500 220 32 248 +137.37 ± 12.36 0 3 60 183 4 +327.18 ± 44.54
483679 ncm-dbt-02 591082 500 233 36 231 +144.71 ± 11.61 0 1 55 190 4 +356.21 ± 46.49
483678 ncm-dbt-05 603993 500 215 36 249 +130.14 ± 12.59 0 4 66 177 3 +304.07 ± 42.38
483677 ncm-dbt-01 582277 500 226 43 231 +133.34 ± 12.69 0 3 66 176 5 +309.64 ± 42.33
483676 ncm-dbt-03 577807 500 220 42 238 +129.35 ± 11.81 0 1 72 175 2 +304.07 ± 40.16
483675 ncm-dbt-04 569230 500 220 39 241 +131.74 ± 12.74 0 4 65 177 4 +306.84 ± 42.73
483674 ncm-dbt-02 590911 500 224 44 232 +130.94 ± 12.76 0 3 69 173 5 +301.33 ± 41.33
483673 ncm-dbt-05 607332 500 228 45 227 +133.34 ± 13.26 1 3 63 178 5 +312.48 ± 43.44
483672 ncm-dbt-01 584453 500 222 39 239 +133.34 ± 12.29 0 1 70 174 5 +309.64 ± 40.79
483671 ncm-dbt-03 575272 500 229 37 234 +140.62 ± 12.02 0 2 58 186 4 +339.63 ± 45.29
483670 ncm-dbt-04 568593 500 226 48 226 +129.35 ± 13.36 0 5 68 171 6 +293.29 ± 41.75
483669 ncm-dbt-02 590524 500 226 33 241 +141.44 ± 11.98 0 2 57 187 4 +342.85 ± 45.71
483408 ncm-dbt-05 599097 500 230 31 239 +146.36 ± 12.4 0 2 54 187 7 +352.8 ± 47.05
483407 ncm-dbt-02 591383 500 230 28 242 +148.85 ± 11.14 0 1 49 197 3 +377.87 ± 49.47
483406 ncm-dbt-03 578959 500 224 34 242 +138.99 ± 11.88 0 3 56 189 2 +339.63 ± 46.2
483405 ncm-dbt-04 565469 500 233 43 224 +138.99 ± 13.1 0 3 62 177 8 +321.19 ± 43.77
483404 ncm-dbt-01 583572 500 222 42 236 +130.94 ± 12.76 0 3 69 173 5 +301.33 ± 41.33
483403 ncm-dbt-05 605162 500 234 47 219 +136.56 ± 12.79 0 1 69 172 8 +312.48 ± 41.11
483402 ncm-dbt-02 590010 500 220 37 243 +133.34 ± 12.49 0 4 62 181 3 +315.35 ± 43.81
483401 ncm-dbt-03 574825 500 221 30 249 +139.81 ± 12.47 0 3 58 184 5 +333.32 ± 45.35
483400 ncm-dbt-01 583237 500 220 33 247 +136.56 ± 12.18 0 2 63 181 4 +324.17 ± 43.32
483399 ncm-dbt-04 567086 500 215 31 254 +134.15 ± 11.43 0 1 65 183 1 +324.17 ± 42.47
483398 ncm-dbt-05 606064 500 233 44 223 +138.18 ± 12.73 0 2 64 177 7 +321.19 ± 42.95
483397 ncm-dbt-03 576210 500 231 33 236 +145.54 ± 12.43 0 3 52 189 6 +352.8 ± 48.05
483396 ncm-dbt-02 587579 500 219 41 240 +129.35 ± 11.81 0 1 72 175 2 +304.07 ± 40.16
483395 ncm-dbt-01 585126 500 231 40 229 +139.81 ± 13.45 0 2 66 171 11 +315.35 ± 42.24
483394 ncm-dbt-04 567007 500 225 38 237 +136.56 ± 12.79 0 3 63 178 6 +318.25 ± 43.39

Commit

Commit ID bd85fb7fa3fc2225e72b7317f0ca822703180543
Author mstembera
Date 2026-08-24 16:27:54 UTC
Fix MSVC warning C4141 ('inline' used more than once) Bug: On MSVC sf_always_inline expands to ```__forceinline```, which already implies ```inline```, so definitions writing both triggered "warning C4141 ('inline' used more than once)". Fix: Moved ```inline``` into the macro and removed it from all definition sites. GCC/Clang still get ```inline __attribute__((always_inline))```. ```inline``` is in the macro since the attribute alone would not set linkage. [Edit] Also adds MSVC coverage to CI as requested. closes https://github.com/official-stockfish/Stockfish/pull/7078 No functional change
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