Dev Builds » 20250809-0704

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 06:43:08 583614 3996 1664 464 1868 +107.65 ± 4.74 2 59 690 1231 16 +237.37 ± 12.95
ncm-dbt-02 06:42:53 586126 4000 1637 481 1882 +103.35 ± 4.76 2 58 742 1178 20 +224.46 ± 12.45
ncm-dbt-03 06:42:32 583937 4000 1648 450 1902 +107.35 ± 4.7 1 58 697 1230 14 +236.78 ± 12.87
ncm-dbt-04 06:44:04 567960 4008 1629 487 1892 +101.81 ± 4.82 0 76 728 1182 18 +220.31 ± 12.61
ncm-dbt-05 06:45:01 578589 3996 1631 447 1918 +106.13 ± 4.67 0 53 726 1201 18 +232.05 ± 12.58
20000 8209 2329 9462 +105.25 ± 2.12 5 304 3583 6022 86 +230.11 ± 5.67

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
426311 ncm-dbt-04 567047 8 4 1 3 +136.8 ± 89.09 0 0 1 3 0 +337.69 ± 541.44
426310 ncm-dbt-01 583698 496 212 56 228 +113.11 ± 12.74 0 5 83 159 1 +254.73 ± 37.51
426309 ncm-dbt-05 583028 496 199 49 248 +108.46 ± 12.58 0 5 88 155 0 +243.46 ± 36.31
426308 ncm-dbt-02 586731 500 208 59 233 +106.77 ± 12.88 0 3 99 144 4 +230.16 ± 33.79
426307 ncm-dbt-03 585169 500 200 54 246 +104.49 ± 13.71 0 9 89 149 3 +226.0 ± 36.29
426306 ncm-dbt-04 569549 500 210 48 242 +116.77 ± 13.19 0 7 76 165 2 +263.42 ± 39.41
426305 ncm-dbt-05 578218 500 202 69 229 +94.69 ± 14.54 0 14 93 139 4 +198.34 ± 35.52
426304 ncm-dbt-01 583279 500 205 75 220 +92.46 ± 13.74 1 10 97 142 0 +202.15 ± 34.7
426303 ncm-dbt-02 583992 500 202 56 242 +104.49 ± 13.88 1 8 87 152 2 +230.16 ± 36.73
426302 ncm-dbt-03 583698 500 203 54 243 +106.77 ± 12.71 0 6 89 155 0 +238.66 ± 36.16
426301 ncm-dbt-04 568991 500 205 64 231 +100.7 ± 13.69 0 10 91 147 2 +217.85 ± 35.89
426300 ncm-dbt-01 584958 500 207 47 246 +115.22 ± 13.2 0 6 81 160 3 +256.44 ± 38.07
426299 ncm-dbt-05 582318 500 206 46 248 +115.22 ± 13.38 0 7 79 161 3 +256.44 ± 38.62
426298 ncm-dbt-03 582110 500 208 52 240 +112.14 ± 12.69 0 5 85 159 1 +251.89 ± 37.03
426297 ncm-dbt-02 588856 500 208 62 230 +104.49 ± 12.35 0 3 99 147 1 +230.16 ± 33.79
426296 ncm-dbt-04 567997 500 199 63 238 +96.94 ± 13.65 0 9 99 139 3 +206.01 ± 34.24
426295 ncm-dbt-01 583363 500 206 59 235 +105.25 ± 13.39 1 5 92 150 2 +232.26 ± 35.5
426294 ncm-dbt-05 574054 500 205 68 227 +97.69 ± 13.34 0 7 102 138 3 +207.95 ± 33.55
426293 ncm-dbt-02 585928 500 200 62 238 +98.44 ± 14.59 0 12 94 138 6 +204.07 ± 35.31
426292 ncm-dbt-03 582193 500 203 67 230 +96.94 ± 13.0 0 7 101 141 1 +209.91 ± 33.74
426291 ncm-dbt-04 567205 500 203 53 244 +107.54 ± 13.73 0 10 82 156 2 +236.51 ± 37.9
426290 ncm-dbt-01 582819 500 197 60 243 +97.69 ± 13.01 0 8 97 145 0 +213.85 ± 34.58
426289 ncm-dbt-05 582402 500 212 52 236 +115.22 ± 12.48 0 3 86 159 2 +258.75 ± 36.62
426288 ncm-dbt-02 585421 500 200 68 232 +93.95 ± 13.45 0 11 96 143 0 +204.07 ± 34.89
426287 ncm-dbt-04 568633 500 196 68 236 +90.96 ± 13.4 0 10 103 136 1 +194.57 ± 33.53
426286 ncm-dbt-03 583824 500 209 50 241 +114.45 ± 12.85 0 6 80 163 1 +258.75 ± 38.32
426285 ncm-dbt-01 583279 500 206 62 232 +102.97 ± 13.38 0 9 89 151 1 +226.0 ± 36.29
426284 ncm-dbt-05 579372 500 195 52 253 +102.22 ± 13.37 0 8 93 147 2 +221.9 ± 35.4
426283 ncm-dbt-02 585464 500 198 62 240 +96.94 ± 13.65 0 10 96 142 2 +207.95 ± 34.86
426282 ncm-dbt-04 565548 500 214 70 216 +102.97 ± 13.54 0 7 96 143 4 +219.87 ± 34.73
426281 ncm-dbt-03 582903 500 204 65 231 +99.2 ± 15.04 1 14 84 147 4 +211.87 ± 37.38
426280 ncm-dbt-01 583321 500 220 56 224 +118.33 ± 13.86 0 9 72 165 4 +263.42 ± 40.52
426279 ncm-dbt-02 586943 500 205 59 236 +104.49 ± 12.88 1 3 96 149 1 +232.26 ± 34.5
426278 ncm-dbt-05 575517 500 213 48 239 +119.11 ± 12.05 0 3 79 168 0 +275.45 ± 38.39
426277 ncm-dbt-04 568434 500 195 60 245 +96.19 ± 13.95 0 12 93 143 2 +206.01 ± 35.51
426276 ncm-dbt-03 584958 500 211 54 235 +112.91 ± 12.5 0 4 86 159 1 +254.16 ± 36.71
426275 ncm-dbt-01 584201 500 211 49 240 +116.77 ± 13.71 0 7 79 159 5 +256.44 ± 38.62
426274 ncm-dbt-02 585674 500 216 53 231 +117.55 ± 13.7 0 8 75 163 4 +261.07 ± 39.69
426273 ncm-dbt-05 573810 500 199 63 238 +96.94 ± 13.33 0 6 106 134 4 +204.07 ± 32.73
426272 ncm-dbt-03 586646 500 210 54 236 +112.14 ± 13.39 0 7 83 157 3 +247.41 ± 37.61
426271 ncm-dbt-04 568236 500 203 60 237 +102.22 ± 13.86 0 11 87 150 2 +221.9 ± 36.76

Commit

Commit ID ade891744714c40a339764693258dc82040e39f0
Author FauziAkram
Date 2025-08-09 07:04:33 UTC
Remove outdated comment Remove the Elo worth, as they are now completely outdated, making them irrelevant and potentially misleading Continuation of #5810 as these comments in "history.h" were missed. closes https://github.com/official-stockfish/Stockfish/pull/6216 No functional change
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