Dev Builds » 20260810-1303

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 06:45:33 583629 4016 1808 301 1907 +137.07 ± 4.49 1 25 491 1448 43 +322.36 ± 15.38
ncm-dbt-02 06:44:56 589949 3986 1797 298 1891 +137.4 ± 4.37 0 17 498 1440 38 +324.96 ± 15.23
ncm-dbt-03 06:44:50 577939 4000 1812 291 1897 +139.1 ± 4.35 0 11 503 1440 46 +328.32 ± 15.13
ncm-dbt-04 06:43:45 566275 4000 1812 297 1891 +138.49 ± 4.58 1 26 483 1437 53 +323.79 ± 15.51
ncm-dbt-05 06:45:07 601940 3998 1785 290 1923 +136.54 ± 4.48 0 24 500 1431 44 +319.62 ± 15.23
20000 9014 1477 9509 +137.72 ± 1.99 2 103 2475 7196 224 +323.79 ± 6.83

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
482493 ncm-dbt-01 583489 16 9 1 6 +190.7 ± 83.17 0 0 1 6 1 +470.09 ± 466.68
482492 ncm-dbt-02 590825 486 226 41 219 +139.26 ± 12.5 0 2 59 177 5 +330.8 ± 44.85
482491 ncm-dbt-03 579166 500 222 45 233 +128.55 ± 12.63 0 1 77 166 6 +290.66 ± 38.7
482490 ncm-dbt-05 602382 498 225 35 238 +139.61 ± 12.51 0 2 61 180 6 +329.43 ± 44.07
482489 ncm-dbt-04 568275 500 235 36 229 +146.36 ± 13.41 0 3 56 180 11 +339.63 ± 46.2
482488 ncm-dbt-01 582444 500 217 41 242 +127.76 ± 12.06 0 2 72 174 2 +298.62 ± 40.29
482487 ncm-dbt-03 579702 500 227 27 246 +147.19 ± 11.24 0 0 54 192 4 +366.77 ± 46.78
482486 ncm-dbt-02 589710 500 228 32 240 +143.89 ± 11.65 0 2 53 192 3 +356.21 ± 47.52
482485 ncm-dbt-05 595804 500 229 34 237 +143.07 ± 12.54 0 3 55 186 6 +342.85 ± 46.64
482484 ncm-dbt-04 563744 500 223 36 241 +136.56 ± 12.98 0 2 67 173 8 +312.48 ± 41.9
482483 ncm-dbt-01 583992 500 219 43 238 +127.76 ± 12.65 0 5 66 177 2 +298.62 ± 42.41
482482 ncm-dbt-03 571431 500 233 37 230 +143.89 ± 12.71 0 2 58 182 8 +339.63 ± 45.29
482481 ncm-dbt-02 591900 500 225 38 237 +136.56 ± 11.97 0 2 62 183 3 +327.18 ± 43.69
482480 ncm-dbt-05 598039 500 230 39 231 +139.81 ± 13.26 0 6 53 185 6 +330.23 ± 47.44
482479 ncm-dbt-01 583196 500 224 51 225 +125.39 ± 13.79 1 6 66 173 4 +288.06 ± 42.4
482478 ncm-dbt-04 565666 500 218 28 254 +138.99 ± 12.09 0 4 54 190 2 +339.63 ± 47.1
482477 ncm-dbt-03 577602 500 223 36 241 +136.56 ± 11.97 0 1 65 180 4 +324.17 ± 42.47
482476 ncm-dbt-02 587325 500 229 35 236 +142.25 ± 12.16 0 2 57 186 5 +342.85 ± 45.71
482475 ncm-dbt-05 601758 500 225 38 237 +136.56 ± 11.76 0 2 61 185 2 +330.23 ± 44.08
482474 ncm-dbt-04 566928 500 227 31 242 +143.89 ± 13.31 0 7 46 191 6 +346.12 ± 50.75
482473 ncm-dbt-01 582152 500 221 30 249 +139.81 ± 12.87 0 3 60 180 7 +327.18 ± 44.54
482472 ncm-dbt-03 576864 500 230 44 226 +135.76 ± 13.01 0 3 65 175 7 +312.48 ± 42.67
482471 ncm-dbt-02 589582 500 228 40 232 +137.37 ± 12.15 0 2 62 182 4 +327.18 ± 43.69
482470 ncm-dbt-05 605342 500 217 36 247 +131.74 ± 12.93 0 3 69 172 6 +301.33 ± 41.33
482469 ncm-dbt-04 567126 500 221 38 241 +133.34 ± 12.29 0 2 67 177 4 +312.48 ± 41.9
482468 ncm-dbt-01 584748 500 233 27 240 +152.18 ± 12.74 0 0 56 182 12 +359.67 ± 45.87
482467 ncm-dbt-03 580282 500 234 36 230 +145.54 ± 12.43 0 1 58 183 8 +346.12 ± 45.18
482466 ncm-dbt-02 591211 500 223 41 236 +132.54 ± 13.65 0 3 72 165 10 +293.29 ± 40.39
482465 ncm-dbt-05 603769 500 221 38 241 +133.34 ± 11.67 0 0 70 177 3 +315.34 ± 40.62
482464 ncm-dbt-04 565744 500 225 46 229 +130.14 ± 12.59 0 2 72 171 5 +298.62 ± 40.29
482463 ncm-dbt-01 583614 500 236 41 223 +143.07 ± 12.75 0 1 62 178 9 +333.32 ± 43.57
482462 ncm-dbt-03 581153 500 219 33 248 +135.76 ± 12.42 0 2 65 178 5 +318.25 ± 42.59
482461 ncm-dbt-04 564723 500 227 45 228 +132.54 ± 14.18 1 4 66 170 9 +298.62 ± 42.41
482460 ncm-dbt-05 596023 500 217 39 244 +129.35 ± 13.36 0 5 68 171 6 +293.29 ± 41.75
482459 ncm-dbt-02 588174 500 219 31 250 +137.37 ± 11.94 0 1 64 181 4 +327.18 ± 42.83
482458 ncm-dbt-01 584159 500 228 35 237 +141.44 ± 12.41 0 4 53 189 4 +342.85 ± 47.56
482457 ncm-dbt-02 590868 500 219 40 241 +130.14 ± 12.59 0 3 69 174 4 +301.33 ± 41.33
482456 ncm-dbt-04 567997 500 236 37 227 +146.36 ± 12.61 0 2 55 185 8 +349.43 ± 46.59
482455 ncm-dbt-05 612410 500 221 31 248 +138.99 ± 13.29 0 3 63 175 9 +318.25 ± 43.39
482454 ncm-dbt-03 577315 500 224 33 243 +139.81 ± 11.84 0 1 61 184 4 +336.46 ± 43.96
482453 ncm-dbt-01 584874 500 221 32 247 +138.18 ± 12.12 0 4 55 189 2 +336.46 ± 46.65

Commit

Commit ID 358ab1bcbcb4e0795de950002014aa0d5f21c628
Author Disservin
Date 2026-08-10 13:03:10 UTC
Cleanup FeatureTransformer Types Little cleanup to also avoid line wraps closes https://github.com/official-stockfish/Stockfish/pull/7032 No functional change
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