Dev Builds » 20250321-1009

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 06:46:11 584053 4000 1593 433 1974 +103.73 ± 4.77 2 63 725 1193 17 +226.26 ± 12.62
ncm-dbt-02 06:45:07 587131 3992 1598 449 1945 +102.91 ± 4.76 2 58 744 1173 19 +223.5 ± 12.43
ncm-dbt-03 06:44:07 586656 4000 1647 487 1866 +103.73 ± 4.74 0 61 739 1179 21 +224.72 ± 12.48
ncm-dbt-04 06:46:18 571423 4008 1622 494 1892 +100.49 ± 4.78 0 73 746 1169 16 +217.29 ± 12.44
ncm-dbt-05 06:45:09 585345 4000 1636 431 1933 +108.02 ± 4.67 0 51 714 1214 21 +236.51 ± 12.69
20000 8096 2294 9610 +103.77 ± 2.12 4 306 3668 5928 94 +225.59 ± 5.6

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
405647 ncm-dbt-04 571632 8 4 0 4 +190.56 ± 13.88 0 0 0 4 0 +1199.83 ± 250.99
405646 ncm-dbt-02 588856 492 184 52 256 +95.55 ± 13.61 0 8 101 134 3 +202.34 ± 33.77
405645 ncm-dbt-01 584117 500 195 61 244 +95.44 ± 12.64 0 6 104 140 0 +207.95 ± 33.1
405644 ncm-dbt-03 585126 500 215 57 228 +113.68 ± 14.05 0 8 82 154 6 +245.2 ± 37.88
405643 ncm-dbt-05 586562 500 205 59 236 +104.49 ± 12.88 0 5 96 147 2 +228.08 ± 34.59
405642 ncm-dbt-04 572719 500 204 54 242 +107.54 ± 14.21 0 12 79 156 3 +234.38 ± 38.61
405641 ncm-dbt-02 586393 500 209 57 234 +109.07 ± 12.7 0 2 98 146 4 +236.51 ± 33.87
405640 ncm-dbt-01 583154 500 204 47 249 +112.91 ± 13.56 0 9 77 162 2 +251.89 ± 39.16
405639 ncm-dbt-05 582027 500 217 69 214 +106.01 ± 13.39 0 5 97 143 5 +226.0 ± 34.38
405638 ncm-dbt-03 586562 500 200 58 242 +101.46 ± 13.53 0 11 86 153 0 +223.94 ± 36.98
405637 ncm-dbt-04 572598 500 192 53 255 +99.2 ± 12.68 0 5 102 142 1 +215.85 ± 33.4
405636 ncm-dbt-02 587240 500 193 58 249 +96.19 ± 13.32 0 8 101 139 2 +206.01 ± 33.8
405635 ncm-dbt-05 587834 500 210 51 239 +114.45 ± 12.3 0 2 89 157 2 +256.44 ± 35.8
405634 ncm-dbt-01 584034 500 200 49 251 +108.3 ± 14.52 1 11 77 158 3 +238.66 ± 39.1
405633 ncm-dbt-03 586477 500 196 54 250 +101.46 ± 13.2 0 9 90 151 0 +223.94 ± 36.07
405632 ncm-dbt-04 571150 500 200 58 242 +101.46 ± 13.53 0 10 89 150 1 +221.9 ± 36.31
405631 ncm-dbt-02 584832 500 193 51 256 +101.46 ± 14.01 2 7 89 151 1 +226.0 ± 36.29
405630 ncm-dbt-03 587707 500 215 62 223 +109.83 ± 12.52 0 1 99 146 4 +238.66 ± 33.53
405629 ncm-dbt-01 582861 500 203 58 239 +103.73 ± 13.87 0 12 82 155 1 +228.08 ± 37.89
405628 ncm-dbt-05 586985 500 194 50 256 +102.97 ± 13.21 0 7 94 147 2 +223.94 ± 35.14
405627 ncm-dbt-04 572034 500 193 69 238 +88.0 ± 13.97 0 14 99 136 1 +187.16 ± 34.38
405626 ncm-dbt-02 586054 500 201 62 237 +99.2 ± 13.67 0 9 96 142 3 +211.87 ± 34.83
405625 ncm-dbt-03 585759 500 208 55 237 +109.83 ± 13.23 0 5 91 150 4 +238.66 ± 35.65
405624 ncm-dbt-05 582444 500 204 44 252 +115.22 ± 13.38 0 7 79 161 3 +256.44 ± 38.62
405623 ncm-dbt-01 581735 500 201 61 238 +99.95 ± 14.15 0 10 95 140 5 +209.91 ± 35.06
405622 ncm-dbt-04 570308 500 213 69 218 +102.97 ± 14.02 0 11 87 149 3 +221.9 ± 36.76
405621 ncm-dbt-02 587579 500 201 57 242 +102.97 ± 13.54 0 8 93 146 3 +221.9 ± 35.4
405620 ncm-dbt-03 585928 500 212 69 219 +102.22 ± 13.37 0 6 99 141 4 +217.85 ± 34.06
405619 ncm-dbt-05 587494 500 204 62 234 +101.46 ± 14.17 0 11 90 145 4 +215.85 ± 36.11
405618 ncm-dbt-01 584285 500 198 42 260 +112.14 ± 12.69 0 3 91 153 3 +247.41 ± 35.47
405617 ncm-dbt-04 570829 500 206 60 234 +104.49 ± 13.22 0 5 98 143 4 +223.94 ± 34.18
405616 ncm-dbt-02 588558 500 206 56 238 +107.54 ± 13.4 0 9 83 157 1 +238.66 ± 37.66
405615 ncm-dbt-03 585169 500 198 63 239 +96.19 ± 13.32 0 10 95 145 0 +209.91 ± 35.06
405614 ncm-dbt-01 584622 500 196 60 244 +96.94 ± 13.16 0 8 99 142 1 +209.91 ± 34.19
405613 ncm-dbt-05 580987 500 212 49 239 +117.55 ± 12.82 0 6 76 167 1 +268.17 ± 39.39
405612 ncm-dbt-04 570148 500 210 67 223 +102.22 ± 12.7 0 5 98 146 1 +223.94 ± 34.18
405611 ncm-dbt-03 590524 500 203 69 228 +95.44 ± 13.94 0 11 97 139 3 +202.15 ± 34.7
405610 ncm-dbt-02 587537 500 211 56 233 +111.37 ± 13.22 0 7 83 158 2 +247.41 ± 37.61
405609 ncm-dbt-01 587622 500 196 55 249 +100.71 ± 13.2 1 4 100 143 2 +219.87 ± 33.78
405608 ncm-dbt-05 588430 500 190 47 263 +102.22 ± 13.37 0 8 93 147 2 +221.9 ± 35.4
405607 ncm-dbt-04 571391 500 200 64 236 +96.94 ± 13.81 0 11 94 143 2 +207.95 ± 35.29

Commit

Commit ID e407a4f269ba4389f31e9bb71fd8b944e3056ced
Author Carlos Esparza
Date 2025-03-21 10:09:27 UTC
Simplify risk_tolerance + avoid overflow passed simplification STC: LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 73984 W: 19058 L: 18879 D: 36047 Ptnml(0-2): 232, 8735, 18866, 8940, 219 https://tests.stockfishchess.org/tests/view/67c269a38200cf1034c9baf9 passed simplification LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 39288 W: 10033 L: 9833 D: 19422 Ptnml(0-2): 14, 4168, 11086, 4356, 20 https://tests.stockfishchess.org/tests/view/67c34f8c8200cf1034c9bda1 closes https://github.com/official-stockfish/Stockfish/pull/5919 Bench: 2050046
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