Dev Builds » 20250227-1930

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 06:47:15 570837 4008 1625 471 1912 +102.95 ± 4.78 1 66 734 1184 19 +223.36 ± 12.54
ncm-dbt-02 06:47:17 572421 3988 1574 461 1953 +99.61 ± 4.83 0 77 744 1156 17 +214.67 ± 12.46
ncm-dbt-03 06:47:45 572207 4000 1602 520 1878 +96.38 ± 4.91 2 82 769 1126 21 +205.76 ± 12.26
ncm-dbt-04 06:47:13 559643 4014 1615 480 1919 +100.99 ± 4.8 1 69 751 1166 20 +217.88 ± 12.39
ncm-dbt-05 06:47:20 572422 3990 1607 484 1899 +100.5 ± 4.79 1 74 732 1177 11 +218.8 ± 12.57
20000 8023 2416 9561 +100.08 ± 2.16 5 368 3730 5809 88 +216.05 ± 5.56

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
402341 ncm-dbt-02 586181 208 84 19 105 +112.33 ± 21.92 0 5 30 68 1 +249.3 ± 63.48
402340 ncm-dbt-05 583447 206 79 28 99 +87.84 ± 20.49 0 4 44 55 0 +188.61 ± 51.53
402339 ncm-dbt-03 587664 220 92 32 96 +97.21 ± 20.99 0 5 41 63 1 +208.13 ± 53.91
402338 ncm-dbt-01 581111 224 96 21 107 +120.99 ± 19.02 0 1 37 72 2 +270.44 ± 56.46
402337 ncm-dbt-04 570589 244 107 31 106 +111.93 ± 18.74 0 2 44 74 2 +244.41 ± 51.6
402336 ncm-dbt-05 577971 500 206 62 232 +102.97 ± 13.04 0 6 96 146 2 +223.94 ± 34.66
402335 ncm-dbt-03 584916 500 197 66 237 +93.2 ± 13.6 0 11 98 140 1 +200.24 ± 34.5
402334 ncm-dbt-02 584159 500 189 55 256 +95.44 ± 13.63 0 12 92 146 0 +207.95 ± 35.71
402333 ncm-dbt-01 582569 500 206 61 233 +103.73 ± 13.38 0 9 88 152 1 +228.08 ± 36.51
402332 ncm-dbt-04 571029 500 196 52 252 +102.97 ± 13.21 0 7 94 147 2 +223.94 ± 35.14
402331 ncm-dbt-03 584495 500 210 67 223 +102.22 ± 14.02 0 11 88 148 3 +219.87 ± 36.54
402330 ncm-dbt-02 588387 500 196 57 247 +99.2 ± 13.35 0 8 97 143 2 +213.85 ± 34.58
402329 ncm-dbt-05 585126 500 201 58 241 +102.22 ± 13.21 0 8 92 149 1 +223.94 ± 35.61
402328 ncm-dbt-01 583950 500 198 50 252 +106.01 ± 13.39 0 8 88 152 2 +232.26 ± 36.48
402327 ncm-dbt-04 571551 500 198 67 235 +93.2 ± 14.66 0 13 99 132 6 +190.85 ± 34.36
402326 ncm-dbt-03 586816 500 200 50 250 +107.54 ± 14.05 1 8 84 154 3 +236.51 ± 37.42
402325 ncm-dbt-02 587537 500 209 53 238 +112.14 ± 13.04 0 4 90 152 4 +245.2 ± 35.79
402324 ncm-dbt-05 587325 500 199 63 238 +96.94 ± 13.33 0 9 97 143 1 +209.91 ± 34.63
402323 ncm-dbt-04 573891 500 197 64 239 +94.69 ± 13.3 0 10 97 143 0 +206.01 ± 34.66
402322 ncm-dbt-01 585759 500 199 55 246 +102.97 ± 13.71 0 7 97 141 5 +217.85 ± 34.53
402321 ncm-dbt-02 584664 500 187 60 253 +90.22 ± 13.7 0 12 100 137 1 +192.71 ± 34.15
402320 ncm-dbt-05 583028 500 201 55 244 +104.49 ± 13.22 0 7 92 149 2 +228.08 ± 35.56
402319 ncm-dbt-03 586858 500 195 70 235 +88.74 ± 14.13 0 13 102 132 3 +185.33 ± 33.81
402318 ncm-dbt-04 572356 500 198 52 250 +104.49 ± 13.71 0 9 89 149 3 +226.0 ± 36.29
402317 ncm-dbt-01 583489 500 206 58 236 +106.01 ± 12.35 0 4 94 152 0 +236.51 ± 34.92
402316 ncm-dbt-04 567918 500 198 64 238 +95.44 ± 12.98 0 7 103 139 1 +206.01 ± 33.36
402315 ncm-dbt-02 585084 500 202 59 239 +102.22 ± 13.86 0 9 93 144 4 +217.85 ± 35.44
402314 ncm-dbt-05 584748 500 201 54 245 +105.25 ± 13.56 0 9 87 152 2 +230.16 ± 36.73
402313 ncm-dbt-03 584874 500 191 65 244 +89.48 ± 14.0 1 10 103 134 2 +190.85 ± 33.57
402312 ncm-dbt-01 581985 500 193 76 231 +82.83 ± 13.39 0 11 112 126 1 +174.55 ± 32.0
402311 ncm-dbt-04 568792 500 205 52 243 +109.83 ± 12.7 0 5 88 156 1 +245.2 ± 36.32
402310 ncm-dbt-05 588217 500 205 58 237 +105.25 ± 13.39 0 8 89 151 2 +230.16 ± 36.26
402309 ncm-dbt-02 587919 500 204 70 226 +95.44 ± 14.25 0 15 87 147 1 +206.01 ± 36.74
402308 ncm-dbt-03 587367 500 201 65 234 +96.94 ± 13.96 0 9 101 135 5 +202.15 ± 33.85
402307 ncm-dbt-01 582611 500 210 61 229 +106.77 ± 13.56 0 10 82 157 1 +236.51 ± 37.9
402306 ncm-dbt-05 477406 500 198 64 238 +95.44 ± 14.84 1 16 82 150 1 +207.95 ± 37.76
402305 ncm-dbt-04 470199 500 205 63 232 +101.46 ± 14.32 1 10 88 148 3 +219.87 ± 36.54
402304 ncm-dbt-03 462259 500 208 69 223 +99.2 ± 13.51 0 8 98 141 3 +211.87 ± 34.38
402303 ncm-dbt-01 468142 500 201 60 239 +100.71 ± 14.47 1 11 87 148 3 +217.85 ± 36.77
402302 ncm-dbt-02 461131 500 194 54 252 +99.95 ± 13.52 0 9 94 145 2 +215.85 ± 35.23
402301 ncm-dbt-04 570469 270 111 35 124 +100.51 ± 19.24 0 6 49 78 2 +213.93 ± 49.23
402300 ncm-dbt-01 587919 284 116 29 139 +109.96 ± 19.05 0 5 49 84 4 +232.53 ± 49.24
402299 ncm-dbt-02 586731 280 109 34 137 +95.39 ± 17.56 0 3 61 74 2 +200.92 ± 43.14
402298 ncm-dbt-05 584537 284 117 42 125 +93.98 ± 18.13 0 7 53 82 0 +204.15 ± 47.27
402297 ncm-dbt-03 584622 280 108 36 136 +91.39 ± 18.25 0 7 54 79 0 +197.53 ± 46.78

Commit

Commit ID d330b48e21f688e80b44001a912168097646671d
Author mstembera
Date 2025-02-27 19:30:10 UTC
Handle updating the small accumulator the same way as the big one https://tests.stockfishchess.org/tests/view/67abfe1ca04df5eb8dbebf0b LLR: 2.97 (-2.94,2.94) <-1.75,0.25> Total: 153088 W: 40072 L: 39979 D: 73037 Ptnml(0-2): 619, 16728, 41764, 16807, 626 closes https://github.com/official-stockfish/Stockfish/pull/5901 No functional change
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