Dev Builds » 20230224-1914

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 06:58:13 583708 4000 1223 795 1982 +37.32 ± 5.16 3 266 1036 690 5 +75.15 ± 10.54
ncm-dbt-02 06:59:13 586334 4004 1200 795 2009 +35.26 ± 5.1 2 271 1051 676 2 +71.27 ± 10.46
ncm-dbt-03 06:58:53 584018 3984 1222 838 1924 +33.59 ± 5.19 6 274 1048 658 6 +67.82 ± 10.48
ncm-dbt-04 06:59:21 568522 4012 1225 812 1975 +35.89 ± 5.09 0 269 1062 668 7 +71.3 ± 10.39
ncm-dbt-05 06:57:33 576897 4000 1287 849 1864 +38.2 ± 5.14 4 255 1047 687 7 +76.79 ± 10.47
20000 6157 4089 9754 +36.05 ± 2.3 15 1335 5244 3379 27 +72.47 ± 4.68

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
429959 ncm-dbt-02 588643 4 1 0 3 +88.51 ± 137.63 0 0 1 1 0 +190.5 ± 634.21 ↓
429958 ncm-dbt-04 568951 12 3 3 6 -0.0 ± 81.87 0 1 4 1 0 -0.0 ± 173.65 ↓
429957 ncm-dbt-03 584537 484 149 85 250 +46.21 ± 14.69 0 28 123 90 1 +92.58 ± 30.67 ↓
429956 ncm-dbt-01 580862 500 159 102 239 +39.78 ± 14.61 0 32 131 85 2 +77.71 ± 29.68 ↓
429955 ncm-dbt-05 566296 500 161 105 234 +39.08 ± 14.96 0 36 123 90 1 +77.71 ± 30.77 ↓
429954 ncm-dbt-02 586350 500 144 100 256 +30.65 ± 15.68 1 44 115 90 0 +63.23 ± 31.81 ↓
429953 ncm-dbt-04 565076 500 155 89 256 +46.13 ± 13.49 0 22 141 86 1 +92.46 ± 28.11 ↓
429952 ncm-dbt-03 584243 500 160 105 235 +38.37 ± 14.53 0 34 127 89 0 +77.71 ± 30.23 ↓
429951 ncm-dbt-05 576864 500 171 115 214 +39.08 ± 15.21 1 35 122 91 1 +79.17 ± 30.91 ↓
429950 ncm-dbt-01 586562 500 148 102 250 +32.06 ± 14.64 1 35 131 83 0 +66.1 ± 29.72 ↓
429949 ncm-dbt-02 586689 500 151 103 246 +33.46 ± 13.94 0 32 138 80 0 +67.55 ± 28.74 ↓
429948 ncm-dbt-04 565469 500 159 106 235 +36.97 ± 15.08 0 36 128 83 3 +70.44 ± 30.11 ↓
429947 ncm-dbt-03 582778 500 162 106 232 +39.08 ± 14.17 1 27 138 83 1 +79.17 ± 28.67 ↓
429946 ncm-dbt-01 584495 500 154 88 258 +46.13 ± 14.45 0 29 127 93 1 +92.46 ± 30.18 ↓
429945 ncm-dbt-04 569390 500 159 98 243 +42.6 ± 14.25 0 29 132 88 1 +85.04 ± 29.5 ↓
429944 ncm-dbt-02 587155 500 157 102 241 +38.37 ± 13.15 0 23 150 76 1 +76.25 ± 26.91 ↓
429943 ncm-dbt-05 578877 500 149 109 242 +27.85 ± 14.75 1 37 134 77 1 +56.07 ± 29.34 ↓
429942 ncm-dbt-03 583279 500 137 110 253 +18.78 ± 15.23 1 47 126 76 0 +39.08 ± 30.41 ↓
429941 ncm-dbt-04 566572 500 156 117 227 +27.15 ± 14.95 0 42 128 79 1 +53.22 ± 30.14 ↓
429940 ncm-dbt-01 582235 500 153 101 246 +36.26 ± 14.26 0 33 132 85 0 +73.34 ± 29.56 ↓
429939 ncm-dbt-02 584832 500 141 93 266 +33.46 ± 15.12 1 37 126 85 1 +67.55 ± 30.39 ↓
429938 ncm-dbt-05 573973 500 151 107 242 +30.65 ± 14.94 2 35 130 83 0 +64.66 ± 29.86 ↓
429937 ncm-dbt-03 584748 500 153 105 242 +33.46 ± 15.24 2 36 124 88 0 +70.44 ± 30.65 ↓
429936 ncm-dbt-04 570108 500 152 98 250 +37.67 ± 13.95 0 30 136 84 0 +76.25 ± 28.98 ↓
429935 ncm-dbt-02 586604 500 152 99 249 +36.97 ± 14.96 0 38 121 91 0 +74.79 ± 31.04 ↓
429934 ncm-dbt-05 583279 500 162 97 241 +45.42 ± 13.73 0 25 135 90 0 +92.46 ± 29.02 ↓
429933 ncm-dbt-01 583908 500 155 101 244 +37.67 ± 14.35 0 33 130 87 0 +76.25 ± 29.82 ↓
429932 ncm-dbt-03 584495 500 140 108 252 +22.27 ± 14.98 1 41 135 71 2 +43.3 ± 29.24 ↓
429931 ncm-dbt-05 578465 500 169 105 226 +44.72 ± 14.24 0 28 131 90 1 +89.48 ± 29.62 ↓
429930 ncm-dbt-04 568474 500 153 92 255 +42.6 ± 14.52 0 32 125 93 0 +86.52 ± 30.48 ↓
429929 ncm-dbt-02 584117 500 147 105 248 +29.25 ± 14.06 0 35 138 77 0 +58.93 ± 28.79 ↓
429928 ncm-dbt-01 584537 500 156 114 230 +29.25 ± 14.59 1 35 136 77 1 +58.93 ± 29.06 ↓
429927 ncm-dbt-03 584201 500 160 107 233 +36.97 ± 13.9 0 30 137 83 0 +74.79 ± 28.85 ↓
429926 ncm-dbt-05 579042 500 161 110 229 +35.56 ± 14.35 0 33 134 82 1 +70.44 ± 29.29 ↓
429925 ncm-dbt-04 570669 500 151 104 245 +32.75 ± 15.07 0 40 124 85 1 +64.66 ± 30.65 ↓
429924 ncm-dbt-02 586012 500 153 85 262 +47.55 ± 13.57 0 23 136 91 0 +96.94 ± 28.83 ↓
429923 ncm-dbt-01 582277 500 152 102 246 +34.86 ± 14.44 0 35 130 85 0 +70.44 ± 29.84 ↓
429922 ncm-dbt-03 583866 500 161 112 227 +34.16 ± 14.52 1 31 138 78 2 +67.55 ± 28.74 ↓
429921 ncm-dbt-05 578383 500 163 101 236 +43.3 ± 14.02 0 26 138 84 2 +85.04 ± 28.63 ↓
429920 ncm-dbt-02 586604 500 154 108 238 +32.05 ± 14.77 0 39 126 85 0 +64.66 ± 30.39 ↓
429919 ncm-dbt-04 571994 500 137 105 258 +22.27 ± 13.81 0 37 144 69 0 +44.72 ± 28.02 ↓
429918 ncm-dbt-01 584790 500 146 85 269 +42.6 ± 15.29 1 34 119 95 1 +86.52 ± 31.31 ↓

Commit

Commit ID 472e726bff0d0e496dc8359cc071726a76317a72
Author Michael Chaly
Date 2023-02-24 19:14:44 UTC
Search tuning at very long time control This patch is a result of tuning session of approximately 100k games at 120+1.2. Biggest changes are in extensions, stat bonus and depth reduction for nodes without a tt move. Failed STC: https://tests.stockfishchess.org/tests/view/63f72c72e74a12625bcd7938 LLR: -2.94 (-2.94,2.94) <0.00,2.00> Total: 13872 W: 3535 L: 3769 D: 6568 Ptnml(0-2): 56, 1621, 3800, 1419, 40 Close to neutral at LTC: https://tests.stockfishchess.org/tests/view/63f738f5e74a12625bcd7b8a Elo: 0.80 +-1.2 (95%) LOS: 90.0% Total: 60000 W: 16213 L: 16074 D: 27713 Ptnml(0-2): 24, 5718, 18379, 5853, 26 nElo: 1.82 +-2.8 (95%) PairsRatio: 1.02 Passed 180+1.8 VLTC: https://tests.stockfishchess.org/tests/view/63f868f3e74a12625bcdb33e LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 15864 W: 4449 L: 4202 D: 7213 Ptnml(0-2): 1, 1301, 5083, 1544, 3 Passed 60+0.6 8 threads SMP VLTC: https://tests.stockfishchess.org/tests/view/63f8a5d6e74a12625bcdbdb3 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 6288 W: 1821 L: 1604 D: 2863 Ptnml(0-2): 0, 402, 2123, 619, 0 closes https://github.com/official-stockfish/Stockfish/pull/4406 bench 4705194
Copyright 2011–2025 Next Chess Move LLC
Feedback & Support Terms of Service Privacy Policy Desktop Version