Dev Builds » 20231104-1634

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 07:01:35 583337 4000 1403 630 1967 +68.0 ± 5.04 3 156 910 927 4 +141.44 ± 11.27
ncm-dbt-02 07:00:53 586684 4000 1411 661 1928 +65.92 ± 5.04 1 161 935 893 10 +135.15 ± 11.1
ncm-dbt-03 07:01:41 585017 4000 1405 672 1923 +64.39 ± 4.94 1 147 981 860 11 +131.54 ± 10.79
ncm-dbt-04 07:02:09 569875 4006 1395 665 1946 +64.03 ± 4.97 1 154 972 866 10 +130.93 ± 10.85
ncm-dbt-05 07:03:26 584223 3994 1406 672 1916 +64.58 ± 4.99 2 152 962 872 9 +132.56 ± 10.92
20000 7020 3300 9680 +65.38 ± 2.23 8 770 4760 4418 44 +134.31 ± 4.91

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
407772 ncm-dbt-04 571190 6 2 2 2 0.0 ± 11.34 0 0 3 0 0 -0.0 ± 10.15 ↓
407771 ncm-dbt-05 582360 494 159 85 250 +52.44 ± 14.52 2 20 128 96 1 +108.93 ± 29.88 ↓
407770 ncm-dbt-03 583447 500 168 75 257 +65.38 ± 14.29 0 20 119 109 2 +132.54 ± 31.18 ↓
407769 ncm-dbt-01 585548 500 184 84 232 +70.44 ± 15.02 0 26 98 126 0 +147.19 ± 34.48 ↓
407768 ncm-dbt-02 587113 500 168 81 251 +61.07 ± 14.1 0 22 119 109 0 +126.18 ± 31.22 ↓
407767 ncm-dbt-04 567126 500 187 86 227 +71.16 ± 13.64 0 15 120 114 1 +147.19 ± 30.88 ↓
407766 ncm-dbt-05 582402 500 185 75 240 +77.71 ± 13.09 0 11 118 121 0 +164.07 ± 31.01 ↓
407765 ncm-dbt-02 586985 500 181 79 240 +71.88 ± 13.37 0 13 123 113 1 +148.85 ± 30.34 ↓
407764 ncm-dbt-03 587325 500 179 99 222 +56.07 ± 14.7 0 27 117 105 1 +113.68 ± 31.56 ↓
407763 ncm-dbt-04 568832 500 180 93 227 +61.07 ± 14.38 0 21 124 102 3 +121.46 ± 30.47 ↓
407762 ncm-dbt-01 582193 500 161 82 257 +55.36 ± 13.84 0 21 130 98 1 +112.14 ± 29.61 ↓
407761 ncm-dbt-05 582485 500 182 87 231 +66.82 ± 14.48 0 22 112 115 1 +137.37 ± 32.27 ↓
407760 ncm-dbt-02 586858 500 177 89 234 +61.79 ± 15.47 0 30 104 114 2 +124.6 ± 33.47 ↓
407759 ncm-dbt-03 585632 500 176 90 234 +60.36 ± 13.93 0 20 125 104 1 +123.02 ± 30.3 ↓
407758 ncm-dbt-04 567244 500 182 74 244 +76.25 ± 14.25 1 15 110 123 1 +160.64 ± 32.5 ↓
407757 ncm-dbt-01 583782 500 170 74 256 +67.55 ± 13.95 0 19 116 115 0 +140.62 ± 31.61 ↓
407756 ncm-dbt-05 583279 500 186 84 230 +71.88 ± 13.81 0 14 123 110 3 +145.54 ± 30.38 ↓
407755 ncm-dbt-02 586181 500 175 72 253 +72.61 ± 13.84 0 16 116 117 1 +150.51 ± 31.54 ↓
407754 ncm-dbt-03 581569 500 159 78 263 +56.78 ± 13.33 0 18 133 99 0 +116.78 ± 29.08 ↓
407753 ncm-dbt-04 568593 500 171 86 243 +59.64 ± 14.99 0 28 110 111 1 +121.46 ± 32.59 ↓
407752 ncm-dbt-01 580406 500 176 78 246 +68.99 ± 14.14 0 20 112 118 0 +143.89 ± 32.25 ↓
407751 ncm-dbt-03 582903 500 179 84 237 +66.83 ± 13.18 1 11 130 108 0 +140.62 ± 29.23 ↓
407750 ncm-dbt-02 587367 500 179 75 246 +73.33 ± 14.58 0 19 111 117 3 +148.85 ± 32.4 ↓
407749 ncm-dbt-05 583614 500 170 87 243 +58.21 ± 14.11 0 23 121 106 0 +119.89 ± 30.94 ↓
407748 ncm-dbt-04 571190 500 169 87 244 +57.5 ± 14.08 0 22 125 102 1 +116.78 ± 30.34 ↓
407747 ncm-dbt-01 584958 500 179 78 243 +71.16 ± 14.5 0 20 111 117 2 +145.54 ± 32.41 ↓
407746 ncm-dbt-03 585843 500 174 92 234 +57.5 ± 13.94 0 20 130 98 2 +115.23 ± 29.58 ↓
407745 ncm-dbt-02 587367 500 183 89 228 +66.11 ± 14.31 1 19 115 115 0 +138.99 ± 31.79 ↓
407744 ncm-dbt-05 588387 500 179 83 238 +67.55 ± 13.65 0 17 120 113 0 +140.62 ± 30.95 ↓
407743 ncm-dbt-01 584327 500 179 76 245 +72.61 ± 13.84 1 14 116 119 0 +153.86 ± 31.51 ↓
407742 ncm-dbt-04 572961 500 165 72 263 +65.38 ± 13.42 0 14 131 103 2 +132.54 ± 29.19 ↓
407741 ncm-dbt-03 586816 500 181 72 247 +76.98 ± 13.98 0 17 107 126 0 +162.35 ± 33.02 ↓
407740 ncm-dbt-02 586308 500 178 87 235 +63.94 ± 13.51 0 16 128 105 1 +130.94 ± 29.72 ↓
407739 ncm-dbt-05 585379 500 178 91 231 +61.07 ± 14.1 0 21 122 106 1 +124.6 ± 30.76 ↓
407738 ncm-dbt-04 570629 500 172 82 246 +63.23 ± 14.2 0 21 119 109 1 +129.35 ± 31.2 ↓
407737 ncm-dbt-01 585000 500 177 83 240 +66.11 ± 14.59 1 21 111 117 0 +138.99 ± 32.43 ↓
407736 ncm-dbt-03 586604 500 189 82 229 +75.52 ± 14.23 0 14 120 111 5 +150.51 ± 30.84 ↓
407735 ncm-dbt-02 585295 500 170 89 241 +56.78 ± 14.73 0 26 119 103 2 +113.68 ± 31.27 ↓
407734 ncm-dbt-04 571110 500 167 83 250 +58.93 ± 13.43 0 18 130 102 0 +121.46 ± 29.51 ↓
407733 ncm-dbt-05 585885 500 167 80 253 +61.07 ± 14.79 0 24 118 105 3 +121.46 ± 31.39 ↓
407732 ncm-dbt-01 580489 500 177 75 248 +71.89 ± 14.1 1 15 116 117 1 +150.51 ± 31.54 ↓

Commit

Commit ID 7f97ba775ece910402108d7a7b11ce645185d300
Author FauziAkram
Date 2023-11-04 16:34:35 UTC
Tweaking the futility pruning formula Huge credit goes also to candirufish, as the idea was first tried by him, and then tuned by me at multiple phases. Tweaking the futility pruning formula to be a bit more selective about when pruning is applied. Adjust the value added to the static eval based on the bestValue relative to ss->staticEval. If bestValue is significantly lower, we add a larger value. Passed STC: LLR: 2.98 (-2.94,2.94) <0.00,2.00> Total: 37120 W: 9590 L: 9266 D: 18264 Ptnml(0-2): 130, 4301, 9385, 4603, 141 https://tests.stockfishchess.org/tests/view/6544cf90136acbc573523247 Passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 49632 W: 12381 L: 12033 D: 25218 Ptnml(0-2): 30, 5429, 13549, 5779, 29 https://tests.stockfishchess.org/tests/view/65453bc1136acbc573523a3c closes https://github.com/official-stockfish/Stockfish/pull/4861 bench: 1107118
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