Dev Builds » 20261010-1340

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 06:42:01 584076 4000 1833 283 1884 +142.05 ± 4.43 0 15 475 1455 55 +336.06 ± 15.6
ncm-dbt-02 06:41:06 590475 4000 1844 250 1906 +146.57 ± 4.22 0 11 429 1515 45 +358.37 ± 16.43
ncm-dbt-03 06:42:39 582932 4000 1854 257 1889 +146.88 ± 4.29 0 15 421 1516 48 +358.37 ± 16.61
ncm-dbt-04 06:43:10 566773 4014 1797 287 1930 +137.45 ± 4.34 0 19 494 1459 35 +326.37 ± 15.31
ncm-dbt-05 06:42:25 603287 3986 1832 278 1876 +143.02 ± 4.47 1 14 466 1454 58 +338.94 ± 15.76
20000 9160 1355 9485 +143.18 ± 1.95 1 74 2285 7399 241 +343.26 ± 7.11

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
486457 ncm-dbt-04 569669 14 6 1 7 +129.72 ± 68.06 0 0 2 5 0 +311.09 ± 930.69 ↓
486456 ncm-dbt-05 601624 486 222 37 227 +139.26 ± 12.93 0 3 58 176 6 +327.65 ± 45.33 ↓
486455 ncm-dbt-01 583656 500 232 37 231 +143.07 ± 12.34 0 1 60 182 7 +339.63 ± 44.35 ↓
486454 ncm-dbt-02 591512 500 229 28 243 +148.02 ± 11.19 0 1 50 196 3 +374.11 ± 48.94 ↓
486453 ncm-dbt-03 582611 500 233 30 237 +149.68 ± 11.32 0 1 49 196 4 +377.87 ± 49.47 ↓
486452 ncm-dbt-04 569190 500 214 35 251 +130.14 ± 12.78 0 3 70 172 5 +298.62 ± 41.01 ↓
486451 ncm-dbt-05 601357 500 234 29 237 +151.34 ± 11.46 0 1 48 196 5 +381.7 ± 50.02 ↓
486450 ncm-dbt-01 583866 500 234 35 231 +146.36 ± 12.61 0 1 58 182 9 +346.12 ± 45.18 ↓
486449 ncm-dbt-03 581444 500 220 36 244 +134.15 ± 12.86 0 3 66 175 6 +309.64 ± 42.33 ↓
486448 ncm-dbt-02 590868 500 228 29 243 +146.36 ± 11.74 0 1 54 190 5 +359.68 ± 46.95 ↓
486447 ncm-dbt-04 563665 500 230 34 236 +143.89 ± 11.42 0 2 52 194 2 +359.68 ± 48.01 ↓
486446 ncm-dbt-05 606833 500 236 40 224 +143.89 ± 12.71 0 2 58 182 8 +339.63 ± 45.29 ↓
486445 ncm-dbt-01 584243 500 229 34 237 +143.07 ± 11.47 0 1 56 190 3 +352.8 ± 46.04 ↓
486444 ncm-dbt-03 582277 500 237 23 240 +158.93 ± 12.13 0 1 44 195 10 +397.72 ± 52.42 ↓
486443 ncm-dbt-02 591125 500 226 31 243 +143.07 ± 11.91 0 2 55 189 4 +349.43 ± 46.59 ↓
486442 ncm-dbt-04 564605 500 222 42 236 +130.94 ± 12.37 0 3 67 177 3 +306.84 ± 41.99 ↓
486441 ncm-dbt-05 604307 500 228 30 242 +145.54 ± 12.64 1 0 56 186 7 +352.8 ± 46.04 ↓
486440 ncm-dbt-01 587113 500 226 34 240 +140.62 ± 12.02 0 2 58 186 4 +339.63 ± 45.29 ↓
486439 ncm-dbt-03 584664 500 237 33 230 +150.51 ± 12.18 0 1 52 189 8 +366.78 ± 47.92 ↓
486438 ncm-dbt-02 588558 500 231 30 239 +148.02 ± 12.32 0 2 52 189 7 +359.68 ± 48.01 ↓
486437 ncm-dbt-04 564605 500 223 41 236 +132.54 ± 12.52 0 1 72 171 6 +304.07 ± 40.16 ↓
486436 ncm-dbt-05 602471 500 221 42 237 +130.14 ± 12.97 0 3 71 170 6 +295.94 ± 40.69 ↓
486435 ncm-dbt-01 580945 500 229 35 236 +142.25 ± 12.37 0 1 61 181 7 +336.46 ± 43.96 ↓
486434 ncm-dbt-02 589283 500 238 32 230 +152.18 ± 11.87 0 0 52 190 8 +374.1 ± 47.75 ↓
486433 ncm-dbt-03 580779 500 221 33 246 +137.37 ± 11.94 0 2 61 184 3 +330.23 ± 44.08 ↓
486432 ncm-dbt-04 566257 500 224 26 250 +145.54 ± 11.56 0 1 54 191 4 +359.68 ± 46.95 ↓
486431 ncm-dbt-05 603366 500 232 37 231 +143.07 ± 12.75 0 1 62 178 9 +333.32 ± 43.57 ↓
486430 ncm-dbt-02 588558 500 241 36 223 +151.34 ± 12.57 0 2 50 189 9 +366.78 ± 49.02 ↓
486429 ncm-dbt-01 581902 500 232 39 229 +141.44 ± 12.81 0 3 58 182 7 +333.32 ± 45.35 ↓
486428 ncm-dbt-03 583405 500 238 31 231 +153.02 ± 11.81 0 1 48 194 7 +381.7 ± 50.02 ↓
486427 ncm-dbt-04 566928 500 228 38 234 +138.99 ± 12.3 0 3 58 185 4 +333.32 ± 45.35 ↓
486426 ncm-dbt-05 600913 500 221 30 249 +139.81 ± 12.47 0 3 58 184 5 +333.32 ± 45.35 ↓
486425 ncm-dbt-02 593586 500 224 31 245 +141.44 ± 12.41 0 2 59 183 6 +336.46 ± 44.87 ↓
486424 ncm-dbt-01 584832 500 232 31 237 +148.02 ± 12.53 0 2 53 187 8 +356.21 ± 47.52 ↓
486423 ncm-dbt-03 584537 500 232 38 230 +142.25 ± 13.18 0 5 53 185 7 +336.46 ± 47.52 ↓
486422 ncm-dbt-04 569549 500 225 40 235 +134.95 ± 12.84 0 4 62 179 5 +315.35 ± 43.81 ↓
486421 ncm-dbt-05 605432 500 238 33 229 +151.34 ± 12.99 0 1 55 182 12 +356.21 ± 46.49 ↓
486420 ncm-dbt-02 590310 500 227 33 240 +142.25 ± 11.51 0 1 57 189 3 +349.43 ± 45.6 ↓
486419 ncm-dbt-01 586054 500 219 38 243 +131.74 ± 13.85 0 4 71 165 10 +290.66 ± 40.76 ↓
486418 ncm-dbt-04 566493 500 225 30 245 +143.07 ± 12.34 0 2 57 185 6 +342.85 ± 45.71 ↓
486417 ncm-dbt-03 583740 500 236 33 231 +149.68 ± 11.09 0 1 48 198 3 +381.7 ± 50.02 ↓

Commit

Commit ID dcf1cd5a8045d49866c0cc56df5b8ba6fe41a659
Author FauziAkram
Date 2026-10-10 13:40:41 UTC
Remove redundant curly braces on single-statement blocks Is any of those needed for clarity reasons? If so, please point them out so I can remove them from the PR. closes https://github.com/official-stockfish/Stockfish/pull/7209 No functional change
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