Dev Builds » 20250602-1952

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 06:48:10 566314 4010 1644 416 1950 +109.92 ± 4.76 1 56 688 1234 26 +240.82 ± 12.96
ncm-dbt-02 06:46:37 585878 4016 1627 419 1970 +107.84 ± 4.7 0 61 694 1237 16 +237.38 ± 12.91
ncm-dbt-03 06:48:12 572715 4014 1626 461 1927 +103.82 ± 4.79 0 67 731 1186 23 +224.46 ± 12.57
ncm-dbt-04 06:44:51 556709 3980 1638 486 1856 +103.52 ± 4.87 1 76 701 1194 18 +225.15 ± 12.86
ncm-dbt-05 06:47:57 574254 3980 1620 470 1890 +103.33 ± 4.81 1 70 713 1190 16 +225.15 ± 12.74
20000 8155 2252 9593 +105.69 ± 2.14 3 330 3527 6041 99 +230.53 ± 5.72

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
416467 ncm-dbt-02 586731 16 6 1 9 +112.26 ± 65.75 0 0 3 5 0 +254.61 ± 287.37
416466 ncm-dbt-04 568912 310 118 38 154 +91.74 ± 18.05 1 7 58 89 0 +201.47 ± 45.15
416465 ncm-dbt-05 601179 314 127 34 153 +106.08 ± 18.11 1 5 53 96 2 +233.31 ± 47.34
416464 ncm-dbt-01 578300 342 137 37 168 +104.64 ± 16.24 0 5 63 101 2 +226.57 ± 43.13
416463 ncm-dbt-03 585084 342 140 41 161 +103.53 ± 16.52 0 4 68 95 4 +217.63 ± 41.19
416462 ncm-dbt-02 586223 500 205 44 251 +116.0 ± 12.84 0 5 81 162 2 +261.07 ± 38.02
416461 ncm-dbt-04 462022 500 211 55 234 +112.14 ± 13.56 0 9 78 161 2 +249.64 ± 38.9
416459 ncm-dbt-05 492533 500 192 63 245 +91.71 ± 14.63 0 16 92 139 3 +192.71 ± 35.72
416458 ncm-dbt-01 445465 500 203 66 231 +97.69 ± 14.43 1 8 100 135 6 +204.07 ± 34.04
416456 ncm-dbt-03 473293 500 195 66 239 +91.71 ± 13.88 0 12 99 137 2 +194.57 ± 34.34
416455 ncm-dbt-02 583154 500 219 53 228 +119.89 ± 12.98 0 5 77 165 3 +270.57 ± 39.07
416454 ncm-dbt-05 579951 166 74 25 67 +105.7 ± 25.51 0 4 28 49 2 +223.06 ± 65.86
416453 ncm-dbt-04 570949 170 73 21 76 +109.78 ± 24.33 0 4 26 54 1 +240.82 ± 68.52
416452 ncm-dbt-01 579124 168 73 12 83 +132.17 ± 19.11 0 0 23 61 0 +319.84 ± 72.75
416451 ncm-dbt-03 585843 172 72 20 80 +108.42 ± 22.5 0 1 34 49 2 +230.89 ± 58.37
416450 ncm-dbt-02 584159 500 194 48 258 +104.49 ± 13.22 0 9 86 155 0 +232.26 ± 36.96
416449 ncm-dbt-05 581818 500 184 48 268 +96.94 ± 13.49 0 9 98 141 2 +207.95 ± 34.43
416448 ncm-dbt-04 568275 500 205 58 237 +105.25 ± 13.88 0 8 92 145 5 +223.94 ± 35.61
416447 ncm-dbt-03 586477 500 209 51 240 +113.68 ± 12.5 0 4 85 160 1 +256.44 ± 36.95
416446 ncm-dbt-01 582903 500 209 49 242 +115.22 ± 13.2 0 7 78 163 2 +258.75 ± 38.88
416445 ncm-dbt-02 585885 500 198 55 247 +102.22 ± 13.21 0 9 89 152 0 +226.0 ± 36.29
416444 ncm-dbt-05 582736 500 211 63 226 +106.01 ± 13.39 0 10 82 158 0 +236.51 ± 37.9
416443 ncm-dbt-04 567442 500 217 56 227 +116.0 ± 13.54 0 7 79 160 4 +256.44 ± 38.62
416442 ncm-dbt-01 582402 500 196 57 247 +99.2 ± 13.67 0 10 93 145 2 +213.85 ± 35.47
416441 ncm-dbt-03 584495 500 188 48 264 +99.95 ± 14.61 0 11 95 137 7 +206.01 ± 35.09
416440 ncm-dbt-02 586054 500 193 59 248 +95.44 ± 12.81 0 5 108 135 2 +204.07 ± 32.28
416439 ncm-dbt-01 583698 500 206 38 256 +121.45 ± 13.31 0 7 71 169 3 +275.45 ± 40.84
416438 ncm-dbt-04 568116 500 209 74 217 +96.19 ± 13.8 0 11 95 142 2 +206.01 ± 35.09
416437 ncm-dbt-05 584076 500 210 59 231 +108.3 ± 13.06 0 7 86 156 1 +240.82 ± 36.9
416436 ncm-dbt-03 585421 500 205 64 231 +100.7 ± 13.36 0 9 92 148 1 +219.87 ± 35.65
416435 ncm-dbt-02 586520 500 199 56 245 +102.22 ± 13.86 0 9 93 144 4 +217.85 ± 35.44
416434 ncm-dbt-04 567918 500 206 59 235 +105.25 ± 13.05 0 5 96 146 3 +228.08 ± 34.59
416433 ncm-dbt-01 583740 500 202 48 250 +110.6 ± 13.73 0 7 87 151 5 +238.66 ± 36.67
416432 ncm-dbt-05 583531 500 205 54 241 +108.3 ± 13.06 0 6 89 153 2 +238.66 ± 36.16
416431 ncm-dbt-03 583992 500 205 51 244 +110.6 ± 13.22 0 7 84 157 2 +245.2 ± 37.37
416430 ncm-dbt-02 587622 500 204 47 249 +112.91 ± 13.22 0 7 81 160 2 +251.89 ± 38.11
416429 ncm-dbt-04 567680 500 200 55 245 +103.73 ± 14.19 0 14 78 157 1 +228.08 ± 38.79
416428 ncm-dbt-03 583698 500 199 63 238 +96.94 ± 13.96 0 12 92 144 2 +207.95 ± 35.71
416427 ncm-dbt-05 577930 500 203 58 239 +103.73 ± 13.22 0 7 93 148 2 +226.0 ± 35.35
416426 ncm-dbt-01 578424 500 209 58 233 +108.3 ± 12.53 0 4 92 153 1 +240.82 ± 35.35
416425 ncm-dbt-02 586562 500 209 56 235 +109.83 ± 14.22 0 12 76 159 3 +240.82 ± 39.35
416424 ncm-dbt-04 569071 500 199 70 231 +91.71 ± 13.42 0 11 99 140 0 +198.34 ± 34.31
416423 ncm-dbt-05 584537 500 214 66 220 +106.01 ± 13.05 0 6 92 150 2 +232.26 ± 35.5
416422 ncm-dbt-01 582778 500 209 51 240 +113.68 ± 13.89 0 8 81 156 5 +247.41 ± 38.13
416421 ncm-dbt-03 586139 500 213 57 230 +112.14 ± 13.22 0 7 82 159 2 +249.64 ± 37.86

Commit

Commit ID 3747a1993722bfb9d5e7c784b2225e5aa742276f
Author Daniel Monroe
Date 2025-06-02 19:52:38 UTC
Simplify away depth condition in IIR Passed simplification STC LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 359520 W: 92714 L: 92849 D: 173957 Ptnml(0-2): 977, 42640, 92614, 42599, 930 https://tests.stockfishchess.org/tests/view/6833705d6ec7634154f9c302 Passed simplification LTC LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 201756 W: 51544 L: 51507 D: 98705 Ptnml(0-2): 89, 21965, 56728, 22012, 84 https://tests.stockfishchess.org/tests/view/68338e386ec7634154f9c790 Passed simplification VLTC LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 48558 W: 12675 L: 12492 D: 23391 Ptnml(0-2): 9, 4779, 14516, 4970, 5 https://tests.stockfishchess.org/tests/view/6838e0b26ec7634154f9d25b closes https://github.com/official-stockfish/Stockfish/pull/6112 Bench: 2302583
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