Dev Builds » 20260426-0739

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 06:42:36 583255 4012 1672 395 1945 +114.57 ± 4.63 0 43 668 1270 25 +254.23 ± 13.13
ncm-dbt-02 06:43:10 586469 4000 1698 379 1923 +119.01 ± 4.56 0 36 633 1307 24 +267.87 ± 13.49
ncm-dbt-03 06:41:32 584930 4000 1701 399 1900 +117.36 ± 4.55 0 31 663 1279 27 +261.95 ± 13.15
ncm-dbt-04 06:41:58 567607 3992 1707 397 1888 +118.39 ± 4.6 1 36 636 1298 25 +265.95 ± 13.46
ncm-dbt-05 06:43:35 580496 3996 1716 373 1907 +121.49 ± 4.55 0 29 628 1310 31 +273.4 ± 13.53
20000 8494 1943 9563 +118.16 ± 2.05 1 175 3228 6464 132 +264.6 ± 5.97

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
466028 ncm-dbt-01 583237 12 7 2 3 +153.98 ± 123.22 0 0 2 3 1 +279.41 ± 548.26
466027 ncm-dbt-04 567165 492 198 39 255 +116.45 ± 12.96 0 6 76 163 1 +264.76 ± 39.38
466026 ncm-dbt-03 583237 500 224 46 230 +129.35 ± 12.01 0 1 73 173 3 +301.33 ± 39.86
466025 ncm-dbt-05 577889 496 214 40 242 +127.29 ± 12.72 0 4 69 172 3 +294.29 ± 41.38
466024 ncm-dbt-02 586985 500 213 50 237 +117.55 ± 13.7 0 5 84 154 7 +254.16 ± 37.27
466023 ncm-dbt-01 586858 500 214 50 236 +118.33 ± 13.0 0 4 82 160 4 +263.42 ± 37.69
466022 ncm-dbt-04 569669 500 219 52 229 +120.67 ± 13.32 0 4 81 159 6 +265.78 ± 37.95
466021 ncm-dbt-05 581735 500 219 40 241 +130.14 ± 12.59 0 4 66 177 3 +304.07 ± 42.38
466020 ncm-dbt-03 582694 500 204 57 239 +105.25 ± 12.88 0 5 95 148 2 +230.16 ± 34.79
466019 ncm-dbt-02 586562 500 214 39 247 +126.97 ± 12.47 0 5 66 178 1 +298.62 ± 42.41
466018 ncm-dbt-01 585885 500 215 37 248 +129.35 ± 12.8 0 3 71 171 5 +295.94 ± 40.69
466017 ncm-dbt-04 566730 500 221 54 225 +120.67 ± 13.5 0 8 70 169 3 +273.0 ± 41.13
466016 ncm-dbt-05 582068 500 215 54 231 +116.0 ± 13.37 0 5 84 156 5 +254.16 ± 37.27
466015 ncm-dbt-01 582485 500 208 42 250 +119.89 ± 12.23 0 2 82 164 2 +273.0 ± 37.5
466014 ncm-dbt-03 584117 500 214 48 238 +119.89 ± 12.04 0 1 84 163 2 +273.0 ± 36.86
466013 ncm-dbt-02 585337 500 213 40 247 +125.38 ± 12.7 0 4 72 171 3 +288.06 ± 40.46
466012 ncm-dbt-04 566178 500 222 51 227 +123.81 ± 12.35 0 2 78 167 3 +282.94 ± 38.55
466011 ncm-dbt-01 583489 500 202 45 253 +112.91 ± 12.86 0 5 85 158 2 +251.89 ± 37.03
466010 ncm-dbt-05 582611 500 206 37 257 +122.24 ± 12.94 0 5 74 168 3 +277.93 ± 39.92
466009 ncm-dbt-02 588217 500 205 45 250 +115.22 ± 12.67 0 3 87 157 3 +256.44 ± 36.38
466008 ncm-dbt-03 584874 500 208 55 237 +109.83 ± 13.23 0 7 85 156 2 +243.0 ± 37.13
466007 ncm-dbt-04 567324 500 208 47 245 +116.0 ± 13.37 1 3 84 158 4 +258.75 ± 37.2
466006 ncm-dbt-01 579331 500 207 51 242 +112.14 ± 13.04 0 6 84 158 2 +249.64 ± 37.33
466005 ncm-dbt-03 585253 500 216 50 234 +119.89 ± 12.98 0 5 77 165 3 +270.57 ± 39.07
466004 ncm-dbt-02 587113 500 207 46 247 +116.0 ± 13.02 0 7 76 166 1 +263.42 ± 39.41
466003 ncm-dbt-05 583447 500 212 45 243 +120.67 ± 12.41 0 3 79 166 2 +275.45 ± 38.39
466002 ncm-dbt-04 567759 500 221 50 229 +123.81 ± 12.35 0 2 78 167 3 +282.94 ± 38.55
466001 ncm-dbt-03 586731 500 216 43 241 +125.38 ± 13.61 0 5 74 164 7 +277.93 ± 39.92
466000 ncm-dbt-01 581818 500 203 62 235 +100.7 ± 13.53 0 8 96 143 3 +215.85 ± 34.78
465999 ncm-dbt-02 587325 500 212 55 233 +112.91 ± 12.32 0 1 94 152 3 +249.64 ± 34.56
465998 ncm-dbt-05 579124 500 213 48 239 +119.11 ± 12.8 0 3 83 160 4 +265.78 ± 37.35
465997 ncm-dbt-04 568236 500 206 53 241 +109.83 ± 13.05 0 7 84 158 1 +245.2 ± 37.37
465996 ncm-dbt-01 581236 500 209 54 237 +111.37 ± 13.39 0 7 84 156 3 +245.2 ± 37.37
465995 ncm-dbt-03 587113 500 220 51 229 +122.24 ± 13.12 0 2 84 157 7 +268.17 ± 36.99
465994 ncm-dbt-02 583698 500 216 56 228 +115.22 ± 13.55 0 6 83 156 5 +251.89 ± 37.57
465993 ncm-dbt-05 579413 500 220 61 219 +114.45 ± 13.21 0 3 91 150 6 +247.41 ± 35.47
465992 ncm-dbt-04 567799 500 212 51 237 +116.0 ± 13.02 0 4 85 157 4 +256.44 ± 36.95
465991 ncm-dbt-03 585421 500 199 49 252 +107.54 ± 12.71 0 5 91 153 1 +238.66 ± 35.65
465990 ncm-dbt-01 584958 500 207 52 241 +111.37 ± 13.56 0 8 82 157 3 +245.2 ± 37.88
465989 ncm-dbt-02 586520 500 218 48 234 +123.02 ± 12.56 0 5 71 173 1 +285.49 ± 40.81
465988 ncm-dbt-05 577684 500 217 48 235 +122.24 ± 12.76 0 2 82 161 5 +273.0 ± 37.5

Commit

Commit ID b35a064eaea827f67c9aab9283be50657d2e8875
Author ppigazzini
Date 2026-04-26 07:39:38 UTC
ci: cancel stale workflow runs per PR or ref Add workflow-level concurrency to the direct GitHub Actions entrypoints so a newer run for the same pull request or repository ref cancels the older in-progress run. Keep the reusable workflow graph, release guards, triggers, and permissions unchanged while documenting the concurrency policy and the official GitHub references used for the change. closes https://github.com/official-stockfish/Stockfish/pull/6773 No functional change.
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