Dev Builds » 20260510-0945

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 06:40:55 584406 4000 1780 344 1876 +130.54 ± 4.42 0 24 545 1402 29 +303.73 ± 14.56
ncm-dbt-02 06:41:32 586206 4004 1760 322 1922 +130.6 ± 4.37 0 16 564 1390 32 +302.9 ± 14.27
ncm-dbt-03 06:40:00 585075 4000 1782 294 1924 +135.76 ± 4.4 0 21 506 1437 36 +319.72 ± 15.12
ncm-dbt-04 06:40:24 568083 3998 1791 348 1859 +131.31 ± 4.5 0 32 523 1413 31 +305.7 ± 14.9
ncm-dbt-05 06:41:42 583450 3998 1789 331 1878 +132.82 ± 4.53 0 31 517 1413 38 +308.49 ± 14.98
20000 8902 1639 9459 +132.2 ± 1.99 0 124 2655 7055 166 +308.03 ± 6.59

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
468703 ncm-dbt-02 586097 4 1 1 2 0.0 ± 17.0 0 0 2 0 0 -0.0 ± 15.22
468702 ncm-dbt-05 579951 498 220 41 237 +130.72 ± 12.4 0 3 67 176 3 +306.03 ± 41.98
468701 ncm-dbt-04 567363 498 224 48 226 +128.32 ± 12.66 0 2 74 168 5 +292.46 ± 39.68
468700 ncm-dbt-01 585464 500 218 35 247 +133.34 ± 13.08 0 6 59 181 4 +312.48 ± 44.93
468699 ncm-dbt-03 582736 500 215 46 239 +122.24 ± 12.94 0 4 77 165 4 +275.45 ± 39.01
468698 ncm-dbt-02 587282 500 219 41 240 +129.35 ± 12.61 0 2 73 170 5 +295.94 ± 39.99
468697 ncm-dbt-05 577069 500 221 38 241 +133.34 ± 12.69 0 5 60 182 3 +315.35 ± 44.57
468696 ncm-dbt-04 566888 500 227 41 232 +135.76 ± 12.81 0 5 58 183 4 +321.19 ± 45.36
468695 ncm-dbt-01 581111 500 223 50 227 +125.38 ± 12.7 0 6 66 177 1 +293.29 ± 42.41
468694 ncm-dbt-03 585337 500 224 37 239 +136.56 ± 12.79 0 5 57 184 4 +324.17 ± 45.77
468693 ncm-dbt-02 585970 500 217 45 238 +124.6 ± 12.71 0 3 76 167 4 +282.94 ± 39.21
468692 ncm-dbt-04 568434 500 230 41 229 +138.18 ± 12.12 0 4 55 189 2 +336.46 ± 46.65
468691 ncm-dbt-05 580323 500 242 40 218 +148.85 ± 13.11 0 3 52 185 10 +352.8 ± 48.05
468690 ncm-dbt-01 583824 500 228 36 236 +140.62 ± 11.59 0 2 56 190 2 +346.12 ± 46.15
468689 ncm-dbt-02 585801 500 227 31 242 +143.89 ± 11.87 0 1 57 187 5 +349.43 ± 45.6
468688 ncm-dbt-03 587240 500 224 24 252 +147.19 ± 11.92 0 2 51 192 5 +363.2 ± 48.51
468687 ncm-dbt-05 581319 500 219 48 233 +123.81 ± 13.81 0 8 68 169 5 +277.93 ± 41.74
468686 ncm-dbt-04 568395 500 224 43 233 +131.74 ± 12.14 0 1 71 174 4 +306.84 ± 40.47
468685 ncm-dbt-01 586477 500 218 46 236 +124.6 ± 12.9 0 1 83 159 7 +275.45 ± 37.11
468684 ncm-dbt-02 587113 500 224 43 233 +131.74 ± 12.34 0 2 69 175 4 +306.84 ± 41.23
468683 ncm-dbt-03 586477 500 225 35 240 +138.99 ± 11.66 0 1 61 185 3 +336.46 ± 43.96
468682 ncm-dbt-04 567561 500 226 50 224 +127.76 ± 12.06 0 1 75 171 3 +295.94 ± 39.27
468681 ncm-dbt-05 583279 500 219 43 238 +127.76 ± 13.21 0 6 66 174 4 +293.29 ± 42.41
468680 ncm-dbt-02 585253 500 218 46 236 +124.6 ± 12.71 0 2 79 164 5 +280.42 ± 38.28
468679 ncm-dbt-03 584453 500 216 40 244 +127.76 ± 13.02 0 3 74 167 6 +288.06 ± 39.79
468678 ncm-dbt-01 585590 500 218 43 239 +126.97 ± 12.28 0 1 77 168 4 +290.66 ± 38.7
468677 ncm-dbt-04 567482 500 225 42 233 +133.34 ± 12.89 0 5 61 180 4 +312.48 ± 44.19
468676 ncm-dbt-05 584916 500 227 32 241 +143.07 ± 11.69 0 0 60 185 5 +346.11 ± 44.19
468675 ncm-dbt-02 584495 500 218 42 240 +127.76 ± 12.26 0 3 70 175 2 +298.62 ± 41.01
468674 ncm-dbt-01 585506 500 226 38 236 +137.37 ± 12.56 0 2 64 178 6 +321.19 ± 42.95
468673 ncm-dbt-03 583112 500 230 39 231 +139.81 ± 12.67 0 2 62 179 7 +327.18 ± 43.69
468672 ncm-dbt-04 568633 500 214 42 244 +124.6 ± 12.9 0 3 77 165 5 +280.42 ± 38.93
468671 ncm-dbt-05 583279 500 224 46 230 +129.35 ± 12.61 0 4 67 176 3 +301.33 ± 42.04
468670 ncm-dbt-02 586435 500 213 41 246 +124.6 ± 12.33 0 2 77 168 3 +285.49 ± 38.83
468669 ncm-dbt-03 582945 500 227 38 235 +138.18 ± 11.91 0 2 60 185 3 +333.32 ± 44.47
468668 ncm-dbt-01 582360 500 229 48 223 +131.74 ± 12.34 0 4 63 181 2 +312.48 ± 43.44
468667 ncm-dbt-04 569909 500 221 41 238 +130.94 ± 14.04 0 11 52 183 4 +304.07 ± 47.2
468666 ncm-dbt-05 597468 500 217 43 240 +126.17 ± 12.68 0 2 77 166 5 +285.49 ± 38.83
468665 ncm-dbt-02 587409 500 223 32 245 +139.81 ± 11.84 0 1 61 184 4 +336.46 ± 43.96
468664 ncm-dbt-03 588302 500 221 35 244 +135.76 ± 12.21 0 2 64 180 4 +321.19 ± 42.95
468663 ncm-dbt-01 584916 500 220 48 232 +124.6 ± 12.33 0 2 77 168 3 +285.49 ± 38.83

Commit

Commit ID c2500b116523ed61946ed512067bc9060f3f2e36
Author disservin
Date 2026-05-10 09:45:15 UTC
Add Prerelease Notes closes https://github.com/official-stockfish/Stockfish/pull/6803 No functional change
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