Dev Builds » 20250928-1843

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 06:44:21 581831 4000 1664 437 1899 +110.12 ± 4.75 1 61 666 1254 18 +243.55 ± 13.19
ncm-dbt-02 06:44:14 585834 4000 1626 406 1968 +109.45 ± 4.56 0 44 705 1238 13 +242.73 ± 12.76
ncm-dbt-03 06:45:28 585264 4006 1640 446 1920 +106.8 ± 4.74 1 62 698 1226 16 +234.71 ± 12.87
ncm-dbt-04 06:43:32 567067 4000 1637 414 1949 +109.74 ± 4.73 0 57 686 1234 23 +240.82 ± 12.98
ncm-dbt-05 06:45:14 581358 3994 1638 479 1877 +103.8 ± 4.82 2 65 723 1186 21 +225.41 ± 12.64
20000 8205 2182 9613 +107.98 ± 2.11 4 289 3478 6138 91 +237.37 ± 5.76

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
434281 ncm-dbt-03 584076 6 2 2 2 0.0 ± 11.34 0 0 3 0 0 -0.0 ± 10.15
434280 ncm-dbt-05 582402 494 205 57 232 +107.38 ± 14.16 1 8 83 152 3 +236.03 ± 37.65
434279 ncm-dbt-04 569949 500 210 53 237 +112.91 ± 13.04 0 5 86 156 3 +249.64 ± 36.79
434278 ncm-dbt-02 584495 500 202 58 240 +102.97 ± 13.21 0 8 91 150 1 +226.0 ± 35.82
434277 ncm-dbt-01 581444 500 212 45 243 +120.67 ± 12.22 0 2 81 165 2 +275.45 ± 37.75
434276 ncm-dbt-03 585759 500 192 51 257 +100.7 ± 13.36 0 9 92 148 1 +219.87 ± 35.65
434275 ncm-dbt-04 562690 500 206 53 241 +109.83 ± 14.22 0 12 76 159 3 +240.82 ± 39.35
434274 ncm-dbt-05 583866 500 208 59 233 +106.77 ± 13.72 0 9 86 152 3 +232.26 ± 36.96
434273 ncm-dbt-01 580489 500 198 57 245 +100.7 ± 13.36 0 10 89 151 0 +221.9 ± 36.31
434272 ncm-dbt-02 587537 500 203 47 250 +112.14 ± 12.51 0 5 84 161 0 +254.16 ± 37.27
434271 ncm-dbt-03 585674 500 213 53 234 +115.22 ± 13.2 0 6 81 160 3 +256.44 ± 38.07
434270 ncm-dbt-04 567284 500 201 52 247 +106.77 ± 13.72 0 11 80 158 1 +236.51 ± 38.38
434269 ncm-dbt-05 583531 500 207 59 234 +106.01 ± 13.88 1 8 85 154 2 +234.38 ± 37.19
434268 ncm-dbt-02 584874 500 198 56 246 +101.46 ± 12.87 0 7 94 149 0 +223.94 ± 35.14
434267 ncm-dbt-03 583866 500 213 55 232 +113.68 ± 13.55 0 8 79 160 3 +251.89 ± 38.63
434266 ncm-dbt-01 578753 500 198 60 242 +98.44 ± 13.82 1 8 95 144 2 +213.85 ± 35.03
434265 ncm-dbt-05 578259 500 200 57 243 +102.22 ± 13.7 0 11 86 152 1 +223.94 ± 36.98
434264 ncm-dbt-04 569031 500 204 47 249 +112.91 ± 13.04 0 4 89 153 4 +247.41 ± 36.02
434263 ncm-dbt-02 584495 500 194 51 255 +102.22 ± 13.21 0 6 98 143 3 +219.87 ± 34.26
434262 ncm-dbt-03 587240 500 202 59 239 +102.22 ± 13.54 0 11 85 154 0 +226.0 ± 37.21
434261 ncm-dbt-01 583321 500 216 58 226 +113.68 ± 14.05 0 9 79 157 5 +247.41 ± 38.64
434260 ncm-dbt-05 582277 500 200 61 239 +99.2 ± 13.51 0 7 101 138 4 +209.91 ± 33.74
434259 ncm-dbt-04 563431 500 213 54 233 +114.45 ± 12.3 0 3 86 160 1 +258.75 ± 36.62
434258 ncm-dbt-01 579166 500 219 56 225 +117.55 ± 12.64 0 4 81 163 2 +265.78 ± 37.95
434257 ncm-dbt-03 585590 500 209 54 237 +111.37 ± 12.51 0 3 91 154 2 +247.41 ± 35.47
434256 ncm-dbt-02 585379 500 205 51 244 +110.6 ± 13.05 0 6 86 156 2 +245.2 ± 36.85
434255 ncm-dbt-04 569270 500 193 56 251 +97.69 ± 13.01 0 6 103 139 2 +209.91 ± 33.29
434254 ncm-dbt-05 582987 500 206 59 235 +105.25 ± 13.72 0 8 91 147 4 +226.0 ± 35.82
434253 ncm-dbt-03 586943 500 200 58 242 +101.46 ± 13.85 1 9 88 151 1 +223.94 ± 36.53
434252 ncm-dbt-01 583028 500 211 43 246 +121.45 ± 12.77 0 5 74 169 2 +277.93 ± 39.92
434251 ncm-dbt-02 586054 500 212 47 241 +119.11 ± 12.05 0 3 79 168 0 +275.45 ± 38.39
434250 ncm-dbt-05 582110 500 204 65 231 +99.2 ± 13.19 0 7 99 142 2 +213.85 ± 34.13
434249 ncm-dbt-04 566691 500 205 53 242 +109.07 ± 14.21 0 11 80 155 4 +236.51 ± 38.38
434248 ncm-dbt-03 584076 500 197 53 250 +102.97 ± 13.87 0 11 86 151 2 +223.94 ± 36.98
434247 ncm-dbt-01 583531 500 206 56 238 +107.54 ± 13.89 0 10 83 154 3 +234.38 ± 37.67
434246 ncm-dbt-02 587325 500 204 52 244 +109.07 ± 13.4 0 6 90 150 4 +236.51 ± 35.94
434245 ncm-dbt-04 568196 500 205 46 249 +114.45 ± 13.38 0 5 86 154 5 +249.64 ± 36.79
434244 ncm-dbt-05 575435 500 208 62 230 +104.49 ± 13.22 0 7 92 149 2 +228.08 ± 35.56
434243 ncm-dbt-03 584159 500 212 61 227 +108.3 ± 13.23 0 5 93 148 4 +234.38 ± 35.22
434242 ncm-dbt-01 584916 500 204 62 234 +101.46 ± 14.17 0 13 84 151 2 +219.87 ± 37.42
434241 ncm-dbt-02 586520 500 208 44 248 +118.33 ± 12.63 0 3 83 161 3 +265.78 ± 37.35

Commit

Commit ID 1a3a9c90053f87c4b386efbb2e80153fd5b9a773
Author Disservin
Date 2025-09-28 18:43:54 UTC
simplify upload_binaries ci Previously the upload step used the os of the artifact to create the upload and used an extra msys2 step. This is in fact not needed and we can do all required changes on ubuntu instead. closes https://github.com/official-stockfish/Stockfish/pull/6294 No functional change
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