Dev Builds » 20250816-1001

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 06:43:25 583229 4000 1638 448 1914 +106.58 ± 4.76 2 62 696 1224 16 +234.38 ± 12.89
ncm-dbt-02 06:44:34 585306 4014 1660 494 1860 +103.92 ± 4.68 0 58 741 1192 16 +226.52 ± 12.46
ncm-dbt-03 06:44:33 583314 4000 1645 444 1911 +107.63 ± 4.72 0 62 691 1231 16 +236.78 ± 12.94
ncm-dbt-04 06:43:32 568463 4000 1656 458 1886 +107.35 ± 4.73 0 58 708 1212 22 +234.38 ± 12.76
ncm-dbt-05 06:44:36 577040 3986 1635 458 1893 +105.74 ± 4.68 0 52 731 1191 19 +230.7 ± 12.53
20000 8234 2302 9464 +106.24 ± 2.11 2 292 3567 6050 89 +232.53 ± 5.68

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
427442 ncm-dbt-02 580157 14 6 3 5 +75.6 ± 101.52 0 1 2 4 0 +159.18 ± 377.67
427441 ncm-dbt-05 573406 486 193 52 241 +103.78 ± 13.96 0 9 87 144 3 +223.89 ± 36.71
427440 ncm-dbt-03 582861 500 202 42 256 +115.22 ± 12.85 0 5 82 161 2 +258.75 ± 37.76
427439 ncm-dbt-04 569549 500 207 62 231 +103.73 ± 13.71 0 10 87 151 2 +226.0 ± 36.75
427438 ncm-dbt-01 584958 500 192 43 265 +106.77 ± 12.88 0 7 87 156 0 +238.66 ± 36.67
427437 ncm-dbt-02 583950 500 210 60 230 +107.54 ± 12.53 0 5 90 155 0 +240.82 ± 35.87
427436 ncm-dbt-05 578547 500 197 65 238 +93.95 ± 13.77 0 12 95 142 1 +202.15 ± 35.11
427435 ncm-dbt-03 583824 500 206 56 238 +107.54 ± 13.23 0 7 88 153 2 +236.51 ± 36.44
427434 ncm-dbt-01 583614 500 214 61 225 +109.83 ± 13.89 0 11 77 160 2 +243.0 ± 39.13
427433 ncm-dbt-04 565744 500 201 56 243 +103.73 ± 13.22 0 7 93 148 2 +226.0 ± 35.35
427432 ncm-dbt-02 588047 500 205 60 235 +103.73 ± 12.7 0 4 99 145 2 +226.0 ± 33.89
427431 ncm-dbt-05 577889 500 208 59 233 +106.77 ± 12.53 0 3 97 148 2 +234.38 ± 34.19
427430 ncm-dbt-03 578877 500 204 70 226 +95.44 ± 13.15 0 9 98 143 0 +207.95 ± 34.43
427429 ncm-dbt-04 567878 500 208 57 235 +108.3 ± 13.23 0 5 93 148 4 +234.38 ± 35.22
427428 ncm-dbt-01 582235 500 198 51 251 +105.25 ± 12.71 0 5 94 150 1 +232.26 ± 35.0
427427 ncm-dbt-02 588047 500 203 65 232 +98.44 ± 12.5 0 4 105 140 1 +213.85 ± 32.74
427426 ncm-dbt-05 576455 500 207 62 231 +103.73 ± 14.03 0 10 89 147 4 +221.9 ± 36.31
427425 ncm-dbt-03 582945 500 209 64 227 +103.73 ± 13.38 0 8 91 149 2 +226.0 ± 35.82
427424 ncm-dbt-01 583866 500 211 56 233 +111.37 ± 12.69 0 3 92 152 3 +245.2 ± 35.25
427423 ncm-dbt-04 569470 500 195 52 253 +102.22 ± 13.7 0 10 89 149 2 +221.9 ± 36.31
427422 ncm-dbt-02 585464 500 215 64 221 +108.3 ± 13.56 0 8 86 153 3 +236.51 ± 36.93
427421 ncm-dbt-05 579702 500 198 57 245 +100.7 ± 13.03 0 6 99 143 2 +217.85 ± 34.06
427420 ncm-dbt-04 566454 500 204 55 241 +106.77 ± 13.39 0 7 90 150 3 +232.26 ± 35.99
427419 ncm-dbt-01 584495 500 204 57 239 +105.25 ± 13.88 0 10 86 151 3 +228.08 ± 36.98
427418 ncm-dbt-03 583279 500 206 63 231 +102.22 ± 14.48 0 12 88 145 5 +215.85 ± 36.55
427417 ncm-dbt-02 582987 500 203 62 235 +100.7 ± 14.01 0 11 90 146 3 +215.85 ± 36.11
427416 ncm-dbt-05 574419 500 211 61 228 +107.54 ± 13.56 0 6 93 146 5 +230.16 ± 35.29
427415 ncm-dbt-04 569151 500 215 62 223 +109.83 ± 13.05 0 8 81 161 0 +247.41 ± 38.13
427414 ncm-dbt-01 583070 500 206 59 235 +105.25 ± 14.51 2 6 90 147 5 +228.08 ± 36.04
427413 ncm-dbt-03 582527 500 204 47 249 +112.91 ± 13.22 0 7 81 160 2 +251.89 ± 38.11
427412 ncm-dbt-02 584327 500 213 55 232 +113.68 ± 13.21 0 6 83 158 3 +251.89 ± 37.57
427411 ncm-dbt-04 569190 500 213 50 237 +117.55 ± 13.18 0 4 84 157 5 +258.75 ± 37.2
427410 ncm-dbt-03 584453 500 202 47 251 +111.37 ± 12.51 0 5 85 160 0 +251.89 ± 37.03
427409 ncm-dbt-01 581652 500 209 72 219 +97.69 ± 14.28 0 14 87 147 2 +209.91 ± 36.75
427408 ncm-dbt-05 577684 500 204 50 246 +110.6 ± 12.15 0 2 93 154 1 +247.41 ± 34.91
427407 ncm-dbt-02 588047 500 200 64 236 +96.94 ± 13.33 0 10 94 146 0 +211.87 ± 35.26
427406 ncm-dbt-01 581943 500 204 49 247 +111.37 ± 12.69 0 6 83 161 0 +251.89 ± 37.57
427405 ncm-dbt-04 570268 500 213 64 223 +106.77 ± 13.56 0 7 91 148 4 +230.16 ± 35.78
427404 ncm-dbt-03 587749 500 212 55 233 +112.91 ± 13.73 0 9 78 160 3 +249.64 ± 38.9
427403 ncm-dbt-05 578218 500 217 52 231 +119.11 ± 12.43 0 4 78 167 1 +273.0 ± 38.74
427402 ncm-dbt-02 586731 500 205 61 234 +102.97 ± 13.87 0 9 92 145 4 +219.87 ± 35.65

Commit

Commit ID 0db4a1bee9a7e1172dbcd105bc9f68b8f4817f86
Author Kevin Lu
Date 2025-08-16 10:01:19 UTC
Remove completedDepth condition for SE Just removing the term Passed STC: LLR: 3.27 (-2.94,2.94) <-1.75,0.25> Total: 179840 W: 47211 L: 47126 D: 85503 Ptnml(0-2): 567, 17929, 52879, 17942, 603 https://tests.stockfishchess.org/tests/view/688bdd88502b34dd5e7111ea Passed LTC: LLR: 3.26 (-2.94,2.94) <-1.75,0.25> Total: 150708 W: 38738 L: 38637 D: 73333 Ptnml(0-2): 79, 12922, 49262, 13001, 90 https://tests.stockfishchess.org/tests/view/688ce857f17748b4d23c8026 Passed VLTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 288312 W: 74104 L: 74152 D: 140056 Ptnml(0-2): 44, 26732, 90657, 26674, 49 https://tests.stockfishchess.org/tests/view/688ec4f57d68fe4f7f130ee3 closes https://github.com/official-stockfish/Stockfish/pull/6221 functional at higher depths Bench: 3002300
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