Dev Builds » 20230604-2112

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 06:56:06 582396 4014 1340 785 1889 +48.35 ± 5.05 2 209 1038 748 10 +97.15 ± 10.5
ncm-dbt-02 06:54:56 584189 3996 1317 763 1916 +48.48 ± 5.16 3 224 994 770 7 +98.17 ± 10.77
ncm-dbt-03 06:54:01 584960 4000 1291 781 1928 +44.54 ± 5.1 5 220 1044 722 9 +89.85 ± 10.47
ncm-dbt-04 06:54:59 571563 3990 1296 700 1994 +52.29 ± 5.08 2 200 1001 784 8 +105.91 ± 10.71
ncm-dbt-05 06:55:04 584867 4000 1298 784 1918 +44.89 ± 5.26 6 242 995 746 11 +90.41 ± 10.78
20000 6542 3813 9645 +47.71 ± 2.29 18 1095 5072 3770 45 +96.27 ± 4.76

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
408724 ncm-dbt-01 581610 14 5 3 6 +49.96 ± 94.42 0 1 3 3 0 +102.11 ± 234.06 ↓
408723 ncm-dbt-04 571833 490 164 95 231 +49.25 ± 14.16 1 22 129 93 0 +102.11 ± 29.74 ↓
408722 ncm-dbt-02 581777 496 160 95 241 +45.79 ± 15.31 1 31 120 94 2 +91.73 ± 31.16 ↓
408721 ncm-dbt-03 585295 500 157 91 252 +46.13 ± 15.61 1 33 118 95 3 +90.97 ± 31.44 ↓
408720 ncm-dbt-05 580613 500 154 93 253 +42.6 ± 14.91 0 34 122 93 1 +85.04 ± 30.9 ↓
408719 ncm-dbt-01 581111 500 158 98 244 +41.89 ± 14.21 1 25 139 83 2 +83.57 ± 28.49 ↓
408718 ncm-dbt-02 582152 500 182 101 217 +56.79 ± 13.33 1 15 136 98 0 +118.33 ± 28.57 ↓
408717 ncm-dbt-04 571913 500 162 88 250 +51.8 ± 14.35 0 24 131 92 3 +101.46 ± 29.54 ↓
408716 ncm-dbt-03 587282 500 163 100 237 +44.01 ± 15.24 0 35 119 94 2 +86.52 ± 31.31 ↓
408715 ncm-dbt-01 581485 500 174 111 215 +44.01 ± 13.79 0 26 135 89 0 +89.48 ± 29.04 ↓
408714 ncm-dbt-05 584034 500 164 103 233 +42.6 ± 15.29 0 37 116 96 1 +85.04 ± 31.71 ↓
408713 ncm-dbt-02 586562 500 164 89 247 +52.51 ± 15.05 0 32 111 107 0 +107.54 ± 32.43 ↓
408712 ncm-dbt-04 570469 500 153 96 251 +39.78 ± 14.08 0 30 133 87 0 +80.63 ± 29.38 ↓
408711 ncm-dbt-03 587579 500 154 101 245 +36.97 ± 13.63 0 28 141 81 0 +74.79 ± 28.27 ↓
408710 ncm-dbt-05 587367 500 169 101 230 +47.55 ± 15.18 2 28 121 98 1 +98.44 ± 31.02 ↓
408709 ncm-dbt-01 583824 500 162 91 247 +49.67 ± 14.38 0 27 126 96 1 +99.95 ± 30.29 ↓
408708 ncm-dbt-02 585000 500 173 89 238 +58.93 ± 14.69 1 24 115 110 0 +123.02 ± 31.84 ↓
408707 ncm-dbt-04 571351 500 165 83 252 +57.5 ± 15.41 1 28 111 108 2 +116.78 ± 32.44 ↓
408706 ncm-dbt-03 585421 500 171 105 224 +46.13 ± 14.45 0 29 127 93 1 +92.46 ± 30.18 ↓
408705 ncm-dbt-01 584748 500 174 100 226 +51.8 ± 13.94 1 20 134 94 1 +106.01 ± 29.04 ↓
408704 ncm-dbt-05 586393 500 164 87 249 +53.93 ± 14.32 1 21 130 96 2 +109.07 ± 29.63 ↓
408703 ncm-dbt-04 570909 500 169 79 252 +63.23 ± 14.06 0 21 118 111 0 +130.94 ± 31.35 ↓
408702 ncm-dbt-02 585211 500 155 92 253 +44.01 ± 15.11 0 34 121 93 2 +86.52 ± 31.04 ↓
408701 ncm-dbt-03 581818 500 166 105 229 +42.6 ± 14.11 1 26 134 89 0 +88.0 ± 29.2 ↓
408700 ncm-dbt-01 582527 500 160 88 252 +50.38 ± 14.81 0 30 119 100 1 +101.46 ± 31.3 ↓
408699 ncm-dbt-05 585674 500 159 95 246 +44.72 ± 15.65 0 38 112 98 2 +88.0 ± 32.25 ↓
408698 ncm-dbt-04 570308 500 155 84 261 +49.67 ± 14.64 0 29 122 98 1 +99.95 ± 30.87 ↓
408697 ncm-dbt-02 585126 500 160 98 242 +43.3 ± 14.16 0 29 130 91 0 +88.0 ± 29.77 ↓
408696 ncm-dbt-03 583866 500 164 83 253 +56.78 ± 13.77 0 18 136 93 3 +112.14 ± 28.66 ↓
408695 ncm-dbt-01 580406 500 166 103 231 +44.01 ± 13.92 0 26 136 87 1 +88.0 ± 28.9 ↓
408694 ncm-dbt-05 582318 500 153 104 243 +34.16 ± 14.13 0 32 138 79 1 +67.55 ± 28.74 ↓
408693 ncm-dbt-04 572558 500 161 85 254 +53.22 ± 14.29 0 24 128 96 2 +106.01 ± 29.96 ↓
408692 ncm-dbt-02 583321 500 153 107 240 +32.05 ± 15.28 0 40 127 80 3 +60.36 ± 30.26 ↓
408691 ncm-dbt-03 581610 500 158 98 244 +41.9 ± 14.21 2 24 136 88 0 +88.0 ± 28.9 ↓
408690 ncm-dbt-01 581777 500 177 98 225 +55.36 ± 14.53 0 24 126 97 3 +109.07 ± 30.24 ↓
408689 ncm-dbt-05 584916 500 168 95 237 +51.09 ± 14.72 1 25 126 96 2 +102.97 ± 30.28 ↓
408688 ncm-dbt-02 584369 500 170 92 238 +54.65 ± 13.37 0 19 134 97 0 +112.14 ± 28.98 ↓
408687 ncm-dbt-04 573163 500 167 90 243 +53.93 ± 13.77 0 22 129 99 0 +110.6 ± 29.78 ↓
408686 ncm-dbt-03 586816 500 158 98 244 +41.9 ± 14.21 1 27 133 89 0 +86.52 ± 29.35 ↓
408685 ncm-dbt-05 587622 500 167 106 227 +42.6 ± 14.78 2 27 130 90 1 +88.0 ± 29.77 ↓
408684 ncm-dbt-01 584076 500 164 93 243 +49.67 ± 14.77 0 30 120 99 1 +99.95 ± 31.16 ↓

Commit

Commit ID 8dea070538dcad790de3c5b9720bdbb836a32440
Author Michael Chaly
Date 2023-06-04 21:12:23 UTC
Move internal iterative reduction before probcut This patch moves IIR before probcut which allows probcut to be produced at lower depths. Comments in IIR are also slightly updated. Passed STC: https://tests.stockfishchess.org/tests/view/6472d604d29264e4cfa749fd LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 387616 W: 103295 L: 102498 D: 181823 Ptnml(0-2): 976, 42322, 106381, 43187, 942 Passed LTC: https://tests.stockfishchess.org/tests/view/6475eb8c4a36543c4c9f42e8 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 202836 W: 54901 L: 54281 D: 93654 Ptnml(0-2): 85, 19609, 61422, 20205, 97 closes https://github.com/official-stockfish/Stockfish/pull/4597 bench 2551691
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