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 06:45:32 581607 4000 1705 404 1891 +117.26 ± 4.74 1 52 620 1299 28 +261.66 ± 13.68
ncm-dbt-02 06:47:13 586513 4012 1696 407 1909 +115.72 ± 4.58 2 38 654 1293 19 +259.97 ± 13.27
ncm-dbt-03 06:46:35 585705 3986 1707 383 1896 +119.95 ± 4.63 0 40 618 1306 29 +269.23 ± 13.68
ncm-dbt-04 06:46:53 567494 4000 1704 384 1912 +119.11 ± 4.56 1 32 639 1302 26 +267.87 ± 13.42
ncm-dbt-05 06:46:36 581905 4002 1712 424 1866 +115.94 ± 4.62 0 47 639 1295 20 +259.72 ± 13.45
20000 8524 2002 9474 +117.59 ± 2.07 4 209 3170 6495 122 +263.65 ± 6.03

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
443541 ncm-dbt-05 580572 2 1 0 1 +189.7 ± 55.98 0 0 0 1 0 +1129.65 ± 376.02
443540 ncm-dbt-02 585885 12 5 1 6 +120.31 ± 75.55 0 0 2 4 0 +279.41 ± 548.26
443539 ncm-dbt-03 585211 486 213 54 219 +118.0 ± 12.85 0 5 75 162 1 +269.49 ± 39.61
443538 ncm-dbt-04 566612 500 216 46 238 +123.02 ± 12.93 0 5 73 169 3 +280.42 ± 40.21
443537 ncm-dbt-05 581860 500 209 47 244 +116.77 ± 13.01 0 5 81 161 3 +261.07 ± 38.02
443536 ncm-dbt-01 582694 500 207 55 238 +109.07 ± 13.73 0 8 86 152 4 +236.51 ± 36.93
443535 ncm-dbt-02 587155 500 216 53 231 +117.55 ± 12.46 0 5 77 168 0 +270.57 ± 39.07
443534 ncm-dbt-03 585590 500 217 53 230 +118.33 ± 12.81 0 3 84 159 4 +263.42 ± 37.11
443533 ncm-dbt-01 582318 500 218 57 225 +116.0 ± 14.21 0 12 68 167 3 +258.75 ± 41.54
443532 ncm-dbt-04 566730 500 219 54 227 +119.11 ± 13.17 0 4 82 159 5 +263.42 ± 37.69
443531 ncm-dbt-02 588941 500 214 44 242 +123.02 ± 12.56 0 4 74 170 2 +282.94 ± 39.86
443530 ncm-dbt-05 580945 500 207 59 234 +106.01 ± 13.88 0 11 82 155 2 +232.26 ± 37.9
443529 ncm-dbt-03 586689 500 224 49 227 +126.97 ± 13.22 0 4 73 167 6 +285.49 ± 40.16
443528 ncm-dbt-04 567759 500 217 49 234 +121.45 ± 12.58 0 3 79 165 3 +275.45 ± 38.39
443527 ncm-dbt-01 578671 500 206 45 249 +116.0 ± 12.47 0 5 79 166 0 +265.78 ± 38.54
443526 ncm-dbt-05 585295 500 213 52 235 +116.0 ± 12.29 0 3 84 162 1 +263.42 ± 37.11
443525 ncm-dbt-02 586646 500 204 57 239 +105.25 ± 12.71 0 6 91 153 0 +234.38 ± 35.72
443524 ncm-dbt-03 581943 500 209 51 240 +113.68 ± 14.05 0 10 76 160 4 +249.64 ± 39.41
443523 ncm-dbt-04 568633 500 208 45 247 +117.55 ± 13.0 0 4 83 159 4 +261.07 ± 37.44
443522 ncm-dbt-01 583698 500 216 50 234 +119.89 ± 13.85 0 7 76 161 6 +263.42 ± 39.41
443521 ncm-dbt-02 586943 500 212 48 240 +118.33 ± 13.0 0 4 82 160 4 +263.42 ± 37.69
443520 ncm-dbt-05 577397 500 210 56 234 +110.6 ± 13.56 0 8 83 156 3 +243.0 ± 37.64
443519 ncm-dbt-01 580613 500 218 49 233 +122.24 ± 13.66 0 8 69 169 4 +275.45 ± 41.43
443518 ncm-dbt-04 566138 500 209 46 245 +117.55 ± 14.04 1 6 77 161 5 +261.07 ± 39.14
443517 ncm-dbt-03 586266 500 207 45 248 +116.77 ± 12.47 0 3 84 161 2 +263.42 ± 37.11
443516 ncm-dbt-02 585379 500 220 46 234 +126.17 ± 13.24 0 5 71 169 5 +285.49 ± 40.81
443515 ncm-dbt-05 583154 500 218 58 224 +115.22 ± 13.2 0 4 87 154 5 +251.89 ± 36.48
443514 ncm-dbt-01 578877 500 214 37 249 +128.55 ± 12.63 0 3 71 172 4 +295.94 ± 40.69
443513 ncm-dbt-03 585717 500 217 46 237 +123.81 ± 13.1 0 4 76 165 5 +277.93 ± 39.29
443512 ncm-dbt-05 580738 500 224 53 223 +123.81 ± 12.54 0 4 73 171 2 +285.49 ± 40.16
443511 ncm-dbt-04 567482 500 219 52 229 +120.67 ± 12.6 0 3 80 164 3 +273.0 ± 38.12
443510 ncm-dbt-02 586604 500 208 50 242 +113.68 ± 13.04 0 6 82 160 2 +254.16 ± 37.82
443509 ncm-dbt-03 587707 500 207 37 256 +123.02 ± 13.47 0 7 70 169 4 +277.93 ± 41.14
443508 ncm-dbt-01 584958 500 213 55 232 +113.68 ± 13.38 1 3 87 155 4 +251.89 ± 36.48
443507 ncm-dbt-05 583237 500 214 48 238 +119.89 ± 12.61 0 4 78 166 2 +273.0 ± 38.74
443506 ncm-dbt-04 566296 500 201 42 257 +114.45 ± 12.85 0 5 83 160 2 +256.44 ± 37.51
443505 ncm-dbt-02 583698 500 211 53 236 +113.68 ± 12.68 0 3 89 155 3 +251.89 ± 35.92
443504 ncm-dbt-03 586520 500 213 48 239 +119.11 ± 12.8 0 4 80 163 3 +268.17 ± 38.21
443503 ncm-dbt-05 583950 500 216 51 233 +119.11 ± 13.34 0 8 71 169 2 +270.57 ± 40.83
443502 ncm-dbt-01 581028 500 213 56 231 +112.91 ± 13.22 0 6 84 157 3 +249.64 ± 37.33
443501 ncm-dbt-02 587367 500 206 55 239 +108.3 ± 14.05 2 5 86 154 3 +240.82 ± 36.9
443500 ncm-dbt-04 570308 500 215 50 235 +119.11 ± 12.05 0 2 82 165 1 +273.0 ± 37.5

Commit

Commit ID c95386256ef79c2a415eeb4ab83ae5ec9e5b1532
Author FauziAkram
Date 2025-11-30 20:58:35 UTC
Simplify the highBestMoveEffort formula in Time management Passed STC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 22272 W: 5885 L: 5655 D: 10732 Ptnml(0-2): 76, 2329, 6108, 2535, 88 https://tests.stockfishchess.org/tests/view/69244d07ba083df4ca63e02b Passed LTC: LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 48690 W: 12405 L: 12221 D: 24064 Ptnml(0-2): 29, 4755, 14597, 4931, 33 https://tests.stockfishchess.org/tests/view/6924de9aba083df4ca63e327 closes https://github.com/official-stockfish/Stockfish/pull/6451 No functional change
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