Dev Builds » 20251130-2058

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 06:46:07 581365 4000 1701 396 1903 +117.65 ± 4.54 1 36 638 1307 18 +265.78 ± 13.44
ncm-dbt-02 06:46:48 585928 4004 1717 362 1925 +122.4 ± 4.55 1 33 603 1340 25 +278.45 ± 13.84
ncm-dbt-03 06:46:34 584896 3996 1712 415 1869 +117.0 ± 4.62 1 35 657 1276 29 +260.57 ± 13.23
ncm-dbt-04 06:46:08 568503 4000 1732 426 1842 +117.75 ± 4.64 2 38 638 1296 26 +264.01 ± 13.45
ncm-dbt-05 06:46:36 581683 4000 1686 397 1917 +116.1 ± 4.67 1 42 652 1277 28 +258.17 ± 13.3
20000 8548 1996 9456 +118.18 ± 2.06 6 184 3188 6496 126 +265.31 ± 6.01

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
443670 ncm-dbt-02 585970 4 2 0 2 +190.27 ± 27.79 0 0 0 2 0 +1199.83 ± 312.71
443669 ncm-dbt-03 585337 496 207 43 246 +119.36 ± 12.86 0 3 82 159 4 +266.47 ± 37.59
443668 ncm-dbt-01 581652 500 217 47 236 +123.02 ± 13.47 0 7 70 169 4 +277.93 ± 41.14
443667 ncm-dbt-05 583740 500 216 60 224 +112.14 ± 13.73 0 9 79 159 3 +247.41 ± 38.64
443666 ncm-dbt-04 570308 500 218 39 243 +130.15 ± 12.97 1 3 65 178 3 +306.84 ± 42.73
443665 ncm-dbt-02 586858 500 219 43 238 +127.76 ± 11.86 0 1 74 173 2 +298.62 ± 39.56
443664 ncm-dbt-03 585337 500 202 47 251 +111.37 ± 13.22 0 6 86 155 3 +245.2 ± 36.85
443663 ncm-dbt-01 582945 500 220 54 226 +119.89 ± 12.23 0 1 85 161 3 +270.57 ± 36.61
443662 ncm-dbt-04 568315 500 212 55 233 +112.91 ± 13.04 0 4 89 153 4 +247.41 ± 36.02
443661 ncm-dbt-05 578218 500 214 46 240 +121.45 ± 13.31 0 6 74 166 4 +273.0 ± 39.95
443660 ncm-dbt-02 585084 500 216 37 247 +130.14 ± 11.99 0 3 66 180 1 +309.64 ± 42.33
443659 ncm-dbt-03 585759 500 215 52 233 +117.55 ± 13.7 0 6 81 157 6 +256.44 ± 38.07
443658 ncm-dbt-01 579620 500 207 44 249 +117.55 ± 12.64 0 5 78 166 1 +268.17 ± 38.8
443657 ncm-dbt-04 569669 500 214 54 232 +115.22 ± 12.67 0 4 84 160 2 +258.75 ± 37.2
443656 ncm-dbt-05 585590 500 216 45 239 +123.81 ± 12.16 0 0 83 163 4 +280.42 ± 36.95
443655 ncm-dbt-02 587070 500 222 45 233 +128.55 ± 12.82 0 4 69 173 4 +295.94 ± 41.39
443654 ncm-dbt-03 586985 500 218 46 236 +124.6 ± 12.33 0 4 71 174 1 +290.66 ± 40.76
443653 ncm-dbt-01 580365 500 211 54 235 +112.91 ± 12.69 0 4 87 157 2 +251.89 ± 36.48
443652 ncm-dbt-04 568991 500 220 64 216 +112.14 ± 13.73 0 8 82 156 4 +245.2 ± 37.88
443651 ncm-dbt-05 578383 500 210 54 236 +112.14 ± 14.06 0 9 81 155 5 +243.0 ± 38.14
443650 ncm-dbt-02 585717 500 215 42 243 +125.38 ± 13.25 0 4 75 165 6 +280.42 ± 39.57
443649 ncm-dbt-03 583572 500 224 58 218 +119.89 ± 13.33 0 4 82 158 6 +263.42 ± 37.69
443648 ncm-dbt-01 579826 500 207 52 241 +111.37 ± 13.39 0 6 87 153 4 +243.0 ± 36.62
443647 ncm-dbt-04 567442 500 217 56 227 +116.0 ± 13.71 0 7 80 158 5 +254.16 ± 38.36
443646 ncm-dbt-05 584034 500 211 39 250 +124.6 ± 13.62 0 3 81 157 9 +270.57 ± 37.86
443645 ncm-dbt-02 584748 500 215 44 241 +123.81 ± 13.28 0 6 71 169 4 +280.42 ± 40.83
443644 ncm-dbt-03 584034 500 217 62 221 +111.37 ± 12.87 0 5 87 156 2 +247.41 ± 36.56
443643 ncm-dbt-01 581236 500 220 46 234 +126.17 ± 12.49 0 3 73 171 3 +290.66 ± 40.08
443642 ncm-dbt-05 580365 500 212 60 228 +109.07 ± 13.56 1 7 82 159 1 +245.2 ± 37.88
443641 ncm-dbt-04 564840 500 214 51 235 +117.55 ± 11.88 0 1 86 162 1 +268.17 ± 36.37
443640 ncm-dbt-02 585042 500 208 48 244 +115.22 ± 13.55 0 7 80 159 4 +254.16 ± 38.36
443639 ncm-dbt-03 584034 500 211 51 238 +115.23 ± 13.55 1 4 83 158 4 +256.44 ± 37.51
443638 ncm-dbt-01 585000 500 213 48 239 +119.11 ± 12.62 1 3 76 170 0 +277.93 ± 39.29
443637 ncm-dbt-05 581319 500 200 55 245 +103.73 ± 12.35 0 4 97 149 0 +230.16 ± 34.29
443636 ncm-dbt-04 568792 500 220 54 226 +119.89 ± 12.98 0 5 77 165 3 +270.57 ± 39.07
443635 ncm-dbt-02 586181 500 212 55 233 +112.91 ± 13.21 1 4 84 159 2 +254.16 ± 37.27
443634 ncm-dbt-03 584117 500 218 56 226 +116.77 ± 12.65 0 3 85 159 3 +261.07 ± 36.86
443633 ncm-dbt-01 580282 500 206 51 243 +111.37 ± 13.05 0 7 82 160 1 +249.64 ± 37.86
443632 ncm-dbt-02 586689 500 208 48 244 +115.22 ± 12.67 0 4 84 160 2 +258.75 ± 37.2
443631 ncm-dbt-05 581818 500 207 38 255 +122.24 ± 12.57 0 4 75 169 2 +280.42 ± 39.57
443630 ncm-dbt-04 569669 500 217 53 230 +118.33 ± 13.86 1 6 75 164 4 +265.78 ± 39.69

Commit

Commit ID c73f21df97e98c960773d0eb0fcf765582c06fed
Author pb00067
Date 2025-11-30 20:58:34 UTC
Fix for SF getting stuck during search (issue #5023) Among several passed similar versions this is the simpliest one. Passed STC non-regression https://tests.stockfishchess.org/tests/view/691f3b4aacb6dbdf23d07d11 LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 126368 W: 32607 L: 32489 D: 61272 Ptnml(0-2): 408, 13974, 34298, 14100, 404 Passed LTC non-regression https://tests.stockfishchess.org/tests/view/69209712acb6dbdf23d0836a LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 114786 W: 29097 L: 28976 D: 56713 Ptnml(0-2): 53, 11841, 33488, 11954, 57 closes https://github.com/official-stockfish/Stockfish/pull/6447 Bench: 2941767
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