Dev Builds » 20260904-1043

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 06:06:48 582804 3606 1665 275 1666 +141.22 ± 4.64 0 18 419 1324 42 +336.17 ± 16.64
ncm-dbt-02 06:57:40 590137 4090 1850 289 1951 +139.67 ± 4.33 0 15 501 1482 47 +330.49 ± 15.18
ncm-dbt-03 06:57:27 584217 4102 1862 311 1929 +138.23 ± 4.38 1 16 513 1473 48 +325.14 ± 15.01
ncm-dbt-04 06:57:25 568158 4110 1850 292 1968 +138.62 ± 4.35 0 18 507 1484 46 +327.0 ± 15.1
ncm-dbt-05 06:57:24 604797 4092 1841 293 1958 +138.3 ± 4.39 0 22 499 1480 45 +326.12 ± 15.24
20000 9068 1460 9472 +139.16 ± 1.97 1 89 2439 7243 228 +328.78 ± 6.88

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
484304 ncm-dbt-02 589069 90 40 9 41 +124.77 ± 29.4 0 1 12 32 0 +293.87 ± 105.67
484303 ncm-dbt-05 602605 92 43 9 40 +134.76 ± 28.36 0 0 13 32 1 +313.45 ± 99.67
484302 ncm-dbt-03 583824 102 44 10 48 +120.4 ± 25.36 0 0 17 34 0 +279.57 ± 84.67
484301 ncm-dbt-01 582193 106 48 5 53 +149.53 ± 28.99 0 1 10 40 2 +357.58 ± 119.27
484300 ncm-dbt-04 565744 110 54 7 49 +158.61 ± 25.01 0 0 10 43 2 +399.97 ± 119.84
484299 ncm-dbt-02 589454 500 232 40 228 +140.62 ± 13.62 0 4 60 176 10 +321.19 ± 44.57
484298 ncm-dbt-05 603724 500 222 35 243 +136.56 ± 14.1 0 7 58 176 9 +309.64 ± 45.27
484297 ncm-dbt-01 580116 500 237 42 221 +143.07 ± 13.15 0 4 55 183 8 +336.46 ± 46.65
484296 ncm-dbt-03 581569 500 228 28 244 +147.19 ± 11.92 0 2 51 192 5 +363.2 ± 48.51
484295 ncm-dbt-04 569111 500 219 40 241 +130.14 ± 13.52 0 6 65 173 6 +295.94 ± 42.75
484294 ncm-dbt-02 588899 500 226 34 240 +140.62 ± 11.81 0 1 60 185 4 +339.63 ± 44.35
484293 ncm-dbt-03 581236 500 229 40 231 +138.18 ± 11.7 0 0 65 181 4 +330.23 ± 42.3
484292 ncm-dbt-01 583908 500 227 36 237 +139.81 ± 12.67 0 4 56 185 5 +333.32 ± 46.21
484291 ncm-dbt-05 602739 500 224 36 240 +137.37 ± 12.36 0 2 63 180 5 +324.17 ± 43.32
484290 ncm-dbt-04 567205 500 225 31 244 +142.25 ± 12.16 0 2 57 186 5 +342.85 ± 45.71
484289 ncm-dbt-02 590739 500 231 41 228 +138.99 ± 13.1 0 2 65 174 9 +318.25 ± 42.59
484288 ncm-dbt-03 582945 500 229 38 233 +139.81 ± 13.07 0 2 64 175 9 +321.19 ± 42.95
484287 ncm-dbt-05 606290 500 225 27 248 +145.54 ± 12.43 0 0 61 180 9 +342.85 ± 43.79
484286 ncm-dbt-01 582277 500 233 39 228 +142.25 ± 12.16 0 2 57 186 5 +342.85 ± 45.71
484285 ncm-dbt-04 567047 500 236 37 227 +146.36 ± 11.96 0 1 55 188 6 +356.21 ± 46.49
484284 ncm-dbt-02 590181 500 211 33 256 +129.35 ± 12.01 0 1 73 173 3 +301.33 ± 39.86
484283 ncm-dbt-03 585717 500 227 42 231 +134.95 ± 12.84 0 2 68 173 7 +309.64 ± 41.56
484282 ncm-dbt-01 582318 500 233 36 231 +144.71 ± 12.47 0 1 59 182 8 +342.85 ± 44.76
484281 ncm-dbt-05 602650 500 219 29 252 +138.99 ± 12.7 0 4 57 184 5 +330.23 ± 45.79
484280 ncm-dbt-04 567680 500 221 37 242 +134.15 ± 12.06 0 1 68 177 4 +315.35 ± 41.44
484279 ncm-dbt-02 590739 500 224 30 246 +142.25 ± 11.51 0 1 57 189 3 +349.43 ± 45.6
484278 ncm-dbt-03 583908 500 238 43 219 +143.07 ± 12.34 0 1 60 182 7 +339.63 ± 44.35
484277 ncm-dbt-01 580904 500 229 38 233 +139.81 ± 12.26 0 2 60 183 5 +333.32 ± 44.47
484276 ncm-dbt-05 603859 500 234 37 229 +144.71 ± 12.05 0 3 51 192 4 +356.21 ± 48.54
484275 ncm-dbt-04 567680 500 229 35 236 +142.25 ± 12.98 0 4 55 184 7 +336.46 ± 46.65
484274 ncm-dbt-02 590438 500 227 35 238 +140.62 ± 11.81 0 2 57 188 3 +342.85 ± 45.71
484273 ncm-dbt-03 586901 500 221 37 242 +134.15 ± 12.47 1 0 67 178 4 +318.25 ± 41.77
484272 ncm-dbt-05 604397 500 220 34 246 +135.76 ± 11.36 0 1 63 185 1 +330.23 ± 43.2
484271 ncm-dbt-01 584790 500 235 42 223 +141.44 ± 11.98 0 2 57 187 4 +342.85 ± 45.71
484270 ncm-dbt-04 568077 500 222 33 245 +138.18 ± 12.73 0 2 64 177 7 +321.19 ± 42.95
484269 ncm-dbt-02 588132 500 227 33 240 +142.25 ± 12.37 0 2 58 184 6 +339.63 ± 45.29
484268 ncm-dbt-03 584916 500 219 38 243 +131.74 ± 13.49 0 7 60 178 5 +304.07 ± 44.5
484267 ncm-dbt-04 566178 500 225 36 239 +138.18 ± 11.7 0 0 65 181 4 +330.23 ± 42.3
484266 ncm-dbt-01 585928 500 223 37 240 +135.76 ± 12.42 0 2 65 178 5 +318.25 ± 42.59
484265 ncm-dbt-05 602695 500 232 47 221 +134.95 ± 12.84 0 3 65 176 6 +312.48 ± 42.67
484264 ncm-dbt-04 574703 500 219 36 245 +133.34 ± 12.49 0 2 68 175 5 +309.64 ± 41.56
484263 ncm-dbt-02 593586 500 232 34 234 +145.54 ± 12.64 0 1 59 181 9 +342.85 ± 44.76
484262 ncm-dbt-05 614215 500 222 39 239 +133.34 ± 12.49 0 2 68 175 5 +309.64 ± 41.56
484261 ncm-dbt-03 586943 500 227 35 238 +140.62 ± 12.64 0 2 61 180 7 +330.23 ± 44.08

Commit

Commit ID 1dc0912d86dafb99e96d679a6ac76cbdf1553459
Author Stéphane Nicolet
Date 2026-09-04 10:43:11 UTC
Improve comments - Add a comment for each function of misc.cpp - Improve comment indentation in tt.h and tt.cpp closes https://github.com/official-stockfish/Stockfish/pull/7130 No functional change
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