Dev Builds » 20230227-0727

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 06:57:59 585518 4002 1253 838 1911 +36.16 ± 5.13 2 264 1063 661 11 +71.49 ± 10.39
ncm-dbt-02 06:57:42 587249 4000 1217 822 1961 +34.42 ± 5.1 2 271 1062 660 5 +68.99 ± 10.39
ncm-dbt-03 06:56:16 586392 4000 1222 824 1954 +34.68 ± 5.14 2 278 1044 672 4 +69.71 ± 10.5
ncm-dbt-04 06:58:30 571445 4004 1216 809 1979 +35.44 ± 5.07 1 267 1061 670 3 +71.27 ± 10.4
ncm-dbt-05 06:59:02 585094 3994 1226 829 1939 +34.65 ± 5.09 4 260 1074 653 6 +69.64 ± 10.32
20000 6134 4122 9744 +35.07 ± 2.28 11 1340 5304 3316 29 +70.22 ± 4.65

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
378824 ncm-dbt-01 585970 2 1 1 0 0.0 ± 34.02 0 0 1 0 0 0.0 ± 30.47 ↓
378823 ncm-dbt-04 572880 4 1 2 1 -88.51 ± 137.63 0 1 1 0 0 -190.5 ± 634.21 ↓
378822 ncm-dbt-05 585126 494 146 116 232 +21.13 ± 14.28 1 37 140 69 0 +43.84 ± 28.51 ↓
378821 ncm-dbt-02 585843 500 144 96 260 +33.46 ± 13.94 0 31 141 77 1 +66.1 ± 28.33 ↓
378820 ncm-dbt-03 586223 500 157 99 244 +40.48 ± 14.39 0 31 131 87 1 +80.63 ± 29.67 ↓
378819 ncm-dbt-01 586181 500 156 115 229 +28.55 ± 14.28 0 35 141 72 2 +54.65 ± 28.39 ↓
378818 ncm-dbt-04 569509 500 143 106 251 +25.76 ± 14.34 0 39 135 76 0 +51.8 ± 29.22 ↓
378817 ncm-dbt-05 583321 500 157 98 245 +41.19 ± 14.57 1 28 134 85 2 +82.1 ± 29.23 ↓
378816 ncm-dbt-02 584832 500 156 104 240 +36.26 ± 14.53 0 34 131 84 1 +71.89 ± 29.7 ↓
378815 ncm-dbt-03 585590 500 143 102 255 +28.55 ± 14.14 0 36 137 77 0 +57.5 ± 28.93 ↓
378814 ncm-dbt-01 584369 500 161 105 234 +39.08 ± 14.17 0 31 132 87 0 +79.17 ± 29.53 ↓
378813 ncm-dbt-04 572316 500 147 100 253 +32.76 ± 13.76 0 31 141 78 0 +66.1 ± 28.33 ↓
378812 ncm-dbt-05 582444 500 157 103 240 +37.67 ± 14.35 0 33 130 87 0 +76.25 ± 29.82 ↓
378811 ncm-dbt-02 589027 500 134 88 278 +32.05 ± 14.25 0 35 134 81 0 +64.66 ± 29.31 ↓
378810 ncm-dbt-03 583028 500 148 106 246 +29.25 ± 16.06 2 43 118 85 2 +58.93 ± 31.42 ↓
378809 ncm-dbt-01 586266 500 136 110 254 +18.08 ± 14.8 0 45 136 67 2 +33.46 ± 29.13 ↓
378808 ncm-dbt-04 570068 500 148 103 249 +31.35 ± 14.73 0 39 127 84 0 +63.23 ± 30.26 ↓
378807 ncm-dbt-03 587919 500 154 101 245 +36.97 ± 14.17 0 32 133 85 0 +74.79 ± 29.41 ↓
378806 ncm-dbt-02 588558 500 156 107 237 +34.16 ± 14.78 0 38 125 87 0 +68.99 ± 30.52 ↓
378805 ncm-dbt-05 587707 500 156 94 250 +43.3 ± 13.88 0 26 137 86 1 +86.52 ± 28.77 ↓
378804 ncm-dbt-01 583992 500 156 100 244 +39.08 ± 14.44 0 32 131 86 1 +77.71 ± 29.68 ↓
378803 ncm-dbt-04 573932 500 151 102 247 +34.16 ± 14.26 0 34 133 83 0 +68.99 ± 29.43 ↓
378802 ncm-dbt-03 585801 500 157 105 238 +36.26 ± 14.53 0 35 128 87 0 +73.34 ± 30.1 ↓
378801 ncm-dbt-02 588089 500 157 110 233 +32.75 ± 15.07 0 40 124 85 1 +64.66 ± 30.65 ↓
378800 ncm-dbt-05 586901 500 149 101 250 +33.46 ± 13.81 0 30 143 76 1 +66.1 ± 28.04 ↓
378799 ncm-dbt-04 571592 500 156 107 237 +34.16 ± 13.99 0 32 137 81 0 +68.99 ± 28.88 ↓
378798 ncm-dbt-01 586012 500 152 120 228 +22.27 ± 14.98 0 46 126 78 0 +44.72 ± 30.4 ↓
378797 ncm-dbt-03 586774 500 153 108 239 +31.35 ± 14.07 0 34 137 79 0 +63.23 ± 28.9 ↓
378796 ncm-dbt-05 583866 500 154 105 241 +34.16 ± 15.16 1 37 125 86 1 +68.99 ± 30.52 ↓
378795 ncm-dbt-04 571793 500 158 96 246 +43.3 ± 14.02 0 27 135 87 1 +86.52 ± 29.06 ↓
378794 ncm-dbt-01 583447 500 153 92 255 +42.6 ± 14.38 1 26 136 85 2 +85.04 ± 28.92 ↓
378793 ncm-dbt-02 584874 500 158 95 247 +44.01 ± 14.86 2 28 125 95 0 +92.46 ± 30.47 ↓
378792 ncm-dbt-03 586477 500 164 97 239 +46.84 ± 14.09 0 26 132 91 1 +93.95 ± 29.45 ↓
378791 ncm-dbt-05 585042 500 152 105 243 +32.76 ± 14.43 1 32 137 79 1 +66.1 ± 28.89 ↓
378790 ncm-dbt-04 572679 500 153 88 259 +45.42 ± 13.87 0 26 133 91 0 +92.46 ± 29.31 ↓
378789 ncm-dbt-02 588132 500 154 115 231 +27.15 ± 13.91 0 35 141 74 0 +54.65 ± 28.39 ↓
378788 ncm-dbt-01 585126 500 167 96 237 +49.67 ± 14.64 1 24 131 91 3 +98.44 ± 29.57 ↓
378787 ncm-dbt-03 589326 500 146 106 248 +27.85 ± 14.75 0 41 128 81 0 +56.07 ± 30.14 ↓
378786 ncm-dbt-01 588302 500 171 99 230 +50.38 ± 14.14 0 25 129 95 1 +101.46 ± 29.84 ↓
378785 ncm-dbt-02 588643 500 158 107 235 +35.56 ± 14.08 0 30 141 77 2 +68.99 ± 28.31 ↓
378784 ncm-dbt-04 568236 500 159 105 236 +37.67 ± 15.62 1 38 119 90 2 +74.79 ± 31.31 ↓
378783 ncm-dbt-05 586350 500 155 107 238 +33.46 ± 14.61 0 37 128 85 0 +67.55 ± 30.12 ↓

Commit

Commit ID 728b963614a765f5cb64c44a078169cca977750f
Author pb00067
Date 2023-02-27 07:27:26 UTC
Use common_parent_position hint also at PVNodes TT hits. Credits to Stefan Geschwentner (locutus2) showing that the hint is useful on PvNodes. In contrast to his test, this version avoids to use the hint when in check. I believe checking positions aren't good candidates for the hint because: - evasion moves are rather few, so a checking pos. has much less childs than a normal position - if the king has to move the NNUE eval can't use incremental updates, so the child nodes have to do a full refresh anyway. Passed STC: https://tests.stockfishchess.org/tests/view/63f9c5b1e74a12625bcdf585 LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 124472 W: 33268 L: 32846 D: 58358 Ptnml(0-2): 350, 12986, 35170, 13352, 378 closes https://github.com/official-stockfish/Stockfish/pull/4410 no functional change
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