Dev Builds » 20230410-0728

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 06:57:53 584156 4000 1272 791 1937 +41.98 ± 5.16 1 255 1012 726 6 +84.31 ± 10.68
ncm-dbt-02 06:59:01 586385 4016 1244 788 1984 +39.62 ± 5.09 2 250 1053 696 7 +79.39 ± 10.44
ncm-dbt-03 06:58:06 587443 4000 1270 789 1941 +41.98 ± 5.12 4 237 1041 710 8 +84.49 ± 10.5
ncm-dbt-04 06:59:15 571880 3994 1248 760 1986 +42.66 ± 5.13 6 233 1028 727 3 +87.21 ± 10.57
ncm-dbt-05 06:59:00 584160 3990 1202 806 1982 +34.6 ± 5.15 4 272 1047 668 4 +69.89 ± 10.48
20000 6236 3934 9830 +40.17 ± 2.3 17 1247 5181 3527 28 +81.04 ± 4.71

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
394032 ncm-dbt-02 585928 16 3 3 10 0.0 ± 4.25 0 0 8 0 0 0.0 ± 3.81 ↓
394031 ncm-dbt-04 571793 494 157 94 243 +44.55 ± 13.95 1 21 141 82 2 +89.11 ± 28.05 ↓
394030 ncm-dbt-05 586223 490 147 114 229 +23.44 ± 14.69 1 38 133 73 0 +48.53 ± 29.43 ↓
394029 ncm-dbt-01 583950 500 148 93 259 +38.37 ± 13.72 0 27 142 80 1 +76.25 ± 28.11 ↓
394028 ncm-dbt-03 585970 500 159 88 253 +49.67 ± 15.16 1 29 120 98 2 +99.95 ± 31.16 ↓
394027 ncm-dbt-02 588089 500 148 92 260 +39.08 ± 14.83 0 36 122 92 0 +79.17 ± 30.91 ↓
394026 ncm-dbt-04 570949 500 160 99 241 +42.6 ± 15.29 0 38 113 99 0 +86.52 ± 32.11 ↓
394025 ncm-dbt-05 584369 500 151 113 236 +26.46 ± 14.13 1 34 141 74 0 +54.65 ± 28.39 ↓
394024 ncm-dbt-01 585801 500 162 104 234 +40.48 ± 14.91 0 35 123 91 1 +80.63 ± 30.77 ↓
394023 ncm-dbt-03 586520 500 166 98 236 +47.54 ± 14.92 0 30 125 92 3 +92.46 ± 30.47 ↓
394022 ncm-dbt-02 582485 500 141 104 255 +25.76 ± 15.23 1 42 127 79 1 +51.8 ± 30.27 ↓
394021 ncm-dbt-04 571310 500 144 86 270 +40.48 ± 13.0 0 22 148 80 0 +82.1 ± 27.15 ↓
394020 ncm-dbt-05 584832 500 143 98 259 +31.35 ± 14.85 0 39 128 82 1 +61.79 ± 30.13 ↓
394019 ncm-dbt-01 585548 500 163 92 245 +49.67 ± 15.29 1 32 112 105 0 +102.97 ± 32.28 ↓
394018 ncm-dbt-03 588728 500 158 97 245 +42.6 ± 14.78 1 30 127 91 1 +86.52 ± 30.2 ↓
394017 ncm-dbt-02 585126 500 151 102 247 +34.16 ± 15.29 0 41 120 88 1 +67.55 ± 31.17 ↓
394016 ncm-dbt-05 587452 500 161 100 239 +42.6 ± 14.52 0 32 125 93 0 +86.52 ± 30.48 ↓
394015 ncm-dbt-04 572719 500 156 94 250 +43.31 ± 14.42 1 28 129 92 0 +89.48 ± 29.91 ↓
394014 ncm-dbt-01 586139 500 165 113 222 +36.26 ± 15.42 0 40 120 88 2 +70.44 ± 31.17 ↓
394013 ncm-dbt-03 586943 500 162 96 242 +46.13 ± 14.05 0 26 133 90 1 +92.46 ± 29.31 ↓
394012 ncm-dbt-02 588472 500 157 89 254 +47.54 ± 13.85 0 24 135 90 1 +95.44 ± 28.99 ↓
394011 ncm-dbt-05 581985 500 151 92 257 +41.19 ± 15.21 2 30 127 89 2 +83.57 ± 30.21 ↓
394010 ncm-dbt-04 572437 500 160 97 243 +44.01 ± 14.6 2 26 129 93 0 +92.46 ± 29.89 ↓
394009 ncm-dbt-03 586308 500 163 105 232 +40.49 ± 14.52 1 30 129 90 0 +83.57 ± 29.93 ↓
394008 ncm-dbt-01 585717 500 145 85 270 +41.89 ± 15.0 0 36 118 96 0 +85.04 ± 31.44 ↓
394007 ncm-dbt-02 588174 500 166 103 231 +44.01 ± 14.2 0 28 132 89 1 +88.0 ± 29.49 ↓
394006 ncm-dbt-05 582778 500 154 98 248 +39.08 ± 14.31 0 31 133 85 1 +77.71 ± 29.4 ↓
394005 ncm-dbt-03 588345 500 156 109 235 +32.75 ± 14.56 0 36 132 81 1 +64.66 ± 29.59 ↓
394004 ncm-dbt-01 586308 500 158 105 237 +36.97 ± 13.63 0 28 141 81 0 +74.79 ± 28.27 ↓
394003 ncm-dbt-04 569909 500 160 97 243 +44.01 ± 14.99 1 32 120 97 0 +90.97 ± 31.17 ↓
394002 ncm-dbt-02 584034 500 166 96 238 +48.96 ± 14.07 0 24 134 90 2 +96.94 ± 29.13 ↓
394001 ncm-dbt-05 581236 500 144 97 259 +32.76 ± 14.69 0 38 127 85 0 +66.1 ± 30.25 ↓
394000 ncm-dbt-03 587877 500 149 100 251 +34.16 ± 13.72 0 30 141 79 0 +68.99 ± 28.31 ↓
393999 ncm-dbt-01 577807 500 168 98 234 +48.96 ± 13.93 0 24 133 92 1 +98.44 ± 29.27 ↓
393998 ncm-dbt-04 572235 500 151 103 246 +33.46 ± 15.37 1 40 119 90 0 +68.99 ± 31.3 ↓
393997 ncm-dbt-02 586816 500 154 94 252 +41.89 ± 13.09 0 22 146 82 0 +85.04 ± 27.43 ↓
393996 ncm-dbt-01 581985 500 163 101 236 +43.3 ± 14.82 0 33 123 93 1 +86.52 ± 30.76 ↓
393995 ncm-dbt-05 584411 500 151 94 255 +39.78 ± 14.08 0 30 133 87 0 +80.63 ± 29.38 ↓
393994 ncm-dbt-04 573689 500 160 90 250 +48.96 ± 14.2 0 26 129 94 1 +98.44 ± 29.86 ↓
393993 ncm-dbt-03 588856 500 157 96 247 +42.6 ± 14.11 1 26 134 89 0 +88.0 ± 29.2 ↓
393992 ncm-dbt-02 588345 500 158 105 237 +36.97 ± 14.83 1 33 129 86 1 +74.79 ± 29.96 ↓

Commit

Commit ID a5643b89fda5060d4b40dff54afe02816c899dd4
Author MinetaS
Date 2023-04-10 07:28:37 UTC
Remove extraReduction Since bestValue becomes value and beta - alpha is always non-negative, extraReduction is always false, hence it has no effect. This patch includes small changes to improve readability. closes https://github.com/official-stockfish/Stockfish/pull/4505 No functional change
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