Dev Builds » 20230128-1550

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 07:00:07 584897 4000 1170 823 2007 +30.22 ± 5.14 5 286 1071 633 5 +60.9 ± 10.35
ncm-dbt-02 06:59:48 586745 3992 1201 846 1945 +30.98 ± 5.23 6 295 1037 654 4 +62.82 ± 10.55
ncm-dbt-03 06:59:39 586273 4014 1244 847 1923 +34.48 ± 5.15 2 282 1044 675 4 +69.28 ± 10.51
ncm-dbt-04 07:00:48 571538 3994 1186 866 1942 +27.9 ± 5.21 4 308 1056 622 7 +55.62 ± 10.44
ncm-dbt-05 07:00:30 583641 4000 1215 814 1971 +34.95 ± 5.17 7 266 1050 673 4 +71.16 ± 10.46
20000 6016 4196 9788 +31.7 ± 2.32 24 1437 5258 3257 24 +63.95 ± 4.68

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
394850 ncm-dbt-03 587664 14 3 3 8 -0.0 ± 69.83 0 1 5 1 0 -0.0 ± 145.53 ↓
394849 ncm-dbt-02 585632 492 153 106 233 +33.29 ± 15.31 0 39 123 82 2 +64.28 ± 30.77 ↓
394848 ncm-dbt-04 570629 494 137 101 256 +25.36 ± 15.11 0 43 126 77 1 +49.57 ± 30.39 ↓
394847 ncm-dbt-05 586054 500 148 105 247 +29.95 ± 15.14 3 34 130 83 0 +64.66 ± 29.86 ↓
394846 ncm-dbt-01 583698 500 144 106 250 +26.46 ± 15.28 1 43 123 83 0 +54.65 ± 30.79 ↓
394845 ncm-dbt-03 583782 500 146 103 251 +29.95 ± 14.37 0 36 136 77 1 +58.93 ± 29.06 ↓
394844 ncm-dbt-02 586731 500 164 111 225 +36.97 ± 14.44 1 31 132 86 0 +76.25 ± 29.54 ↓
394843 ncm-dbt-04 570308 500 142 115 243 +18.78 ± 14.6 0 44 136 69 1 +36.26 ± 29.12 ↓
394842 ncm-dbt-05 580738 500 155 102 243 +36.97 ± 14.04 1 28 138 83 0 +76.25 ± 28.69 ↓
394841 ncm-dbt-01 583614 500 148 110 242 +26.46 ± 14.52 1 35 141 71 2 +51.8 ± 28.4 ↓
394840 ncm-dbt-03 585717 500 152 106 242 +32.05 ± 14.9 0 40 124 86 0 +64.66 ± 30.65 ↓
394839 ncm-dbt-02 585801 500 142 108 250 +23.66 ± 14.19 0 39 138 73 0 +47.55 ± 28.83 ↓
394838 ncm-dbt-04 572517 500 145 108 247 +25.76 ± 14.85 1 38 136 73 2 +50.38 ± 29.09 ↓
394837 ncm-dbt-05 583279 500 171 101 228 +48.96 ± 15.25 1 30 119 98 2 +98.44 ± 31.3 ↓
394836 ncm-dbt-01 585379 500 152 92 256 +41.89 ± 14.21 1 26 136 86 1 +85.04 ± 28.92 ↓
394835 ncm-dbt-03 585970 500 153 113 234 +27.85 ± 14.49 0 39 132 79 0 +56.07 ± 29.61 ↓
394834 ncm-dbt-02 586435 500 138 107 255 +21.57 ± 14.93 1 43 130 76 0 +44.72 ± 29.89 ↓
394833 ncm-dbt-04 573163 500 160 117 223 +29.95 ± 14.5 2 32 137 79 0 +63.23 ± 28.9 ↓
394832 ncm-dbt-01 586012 500 149 111 240 +26.46 ± 14.52 0 40 132 78 0 +53.22 ± 29.61 ↓
394831 ncm-dbt-05 586985 500 125 100 275 +17.39 ± 13.97 0 41 143 66 0 +34.86 ± 28.19 ↓
394830 ncm-dbt-03 587028 500 162 96 242 +46.13 ± 14.72 0 31 123 95 1 +92.46 ± 30.75 ↓
394829 ncm-dbt-02 589582 500 151 100 249 +35.56 ± 14.48 1 32 132 85 0 +73.34 ± 29.56 ↓
394828 ncm-dbt-04 569749 500 140 115 245 +17.39 ± 14.87 0 48 129 73 0 +34.86 ± 30.03 ↓
394827 ncm-dbt-05 583279 500 163 104 233 +41.19 ± 15.08 0 35 123 90 2 +80.63 ± 30.77 ↓
394826 ncm-dbt-01 585464 500 148 99 253 +34.16 ± 13.85 0 31 139 80 0 +68.99 ± 28.6 ↓
394825 ncm-dbt-03 588047 500 163 100 237 +44.01 ± 14.6 1 28 129 91 1 +89.48 ± 29.91 ↓
394824 ncm-dbt-02 586858 500 155 121 224 +23.66 ± 15.08 0 45 127 77 1 +46.13 ± 30.28 ↓
394823 ncm-dbt-05 582611 500 143 107 250 +25.06 ± 15.06 1 42 127 80 0 +51.8 ± 30.27 ↓
394822 ncm-dbt-04 572840 500 156 104 240 +36.26 ± 14.79 1 33 130 85 1 +73.34 ± 29.83 ↓
394821 ncm-dbt-01 586223 500 146 103 251 +29.95 ± 14.11 0 33 143 72 2 +57.5 ± 28.1 ↓
394820 ncm-dbt-03 585211 500 160 113 227 +32.76 ± 14.69 0 38 127 85 0 +66.1 ± 30.25 ↓
394819 ncm-dbt-02 588600 500 150 94 256 +39.08 ± 14.57 0 34 126 90 0 +79.17 ± 30.36 ↓
394818 ncm-dbt-04 572235 500 165 111 224 +37.67 ± 14.87 0 36 125 88 1 +74.79 ± 30.51 ↓
394817 ncm-dbt-05 584201 500 146 101 253 +31.36 ± 14.07 1 31 140 78 0 +64.66 ± 28.48 ↓
394816 ncm-dbt-01 583154 500 136 100 264 +25.06 ± 15.43 2 42 124 82 0 +53.22 ± 30.66 ↓
394815 ncm-dbt-03 586223 500 145 95 260 +34.86 ± 14.31 0 34 132 84 0 +70.44 ± 29.57 ↓
394814 ncm-dbt-02 584327 500 148 99 253 +34.16 ± 15.29 3 32 129 85 1 +71.89 ± 29.97 ↓
394813 ncm-dbt-03 586816 500 160 118 222 +29.25 ± 14.59 1 35 136 77 1 +58.93 ± 29.06 ↓
394812 ncm-dbt-01 585632 500 147 102 251 +31.35 ± 14.34 0 36 133 81 0 +63.23 ± 29.45 ↓
394811 ncm-dbt-04 570869 500 141 95 264 +32.05 ± 14.25 0 34 137 78 1 +63.23 ± 28.9 ↓
394810 ncm-dbt-05 581985 500 164 94 242 +48.96 ± 13.93 0 25 130 95 0 +99.95 ± 29.7 ↓

Commit

Commit ID d4d1cec29631f041adeec98adc5893b5c6a54969
Author Dubslow
Date 2023-01-28 15:50:46 UTC
Remove `previousDepth` in favor of `completedDepth + 2` Beyond the simplification, this could be considered a bugfix from a certain point of view. However, the effect is very subtle and essentially impossible for users to notice. 5372f81cc8 added about 2 Elo at LTC, but only for second and later `go` commands; now, with this patch, the first `go` command will also benefit from that gain. Games under time controls are unaffected (as per the tests). STC: https://tests.stockfishchess.org/tests/view/63c3d291330c0d3d051d48a8 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 473792 W: 124858 L: 125104 D: 223830 Ptnml(0-2): 1338, 49653, 135063, 49601, 1241 LTC: https://tests.stockfishchess.org/tests/view/63c8cd56a83c702aac083bc9 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 290728 W: 76926 L: 76978 D: 136824 Ptnml(0-2): 106, 27987, 89221, 27953, 97 closes https://github.com/official-stockfish/Stockfish/pull/4361 bench 4208265
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