Dev Builds » 20230305-1506

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 06:58:30 582544 4000 1248 810 1942 +38.2 ± 5.2 1 272 1024 694 9 +75.88 ± 10.61
ncm-dbt-02 06:58:14 584662 4000 1236 806 1958 +37.49 ± 5.08 3 253 1060 679 5 +75.52 ± 10.4
ncm-dbt-03 06:56:40 586159 4000 1268 807 1925 +40.22 ± 4.99 2 230 1077 687 4 +81.18 ± 10.28
ncm-dbt-04 06:58:12 569387 4000 1289 799 1912 +42.78 ± 5.06 2 234 1040 720 4 +86.52 ± 10.5
ncm-dbt-05 06:58:37 584243 4000 1232 838 1930 +34.33 ± 5.01 3 252 1099 640 6 +68.81 ± 10.17
20000 6273 4060 9667 +38.6 ± 2.27 11 1241 5300 3420 28 +77.56 ± 4.65

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
411788 ncm-dbt-04 568713 500 161 105 234 +39.08 ± 14.44 0 32 131 86 1 +77.71 ± 29.68 ↓
411787 ncm-dbt-02 584285 500 155 98 247 +39.78 ± 14.35 0 31 132 86 1 +79.17 ± 29.53 ↓
411786 ncm-dbt-01 581777 500 142 110 248 +22.27 ± 14.86 0 45 128 77 0 +44.72 ± 30.15 ↓
411785 ncm-dbt-05 585928 500 154 102 244 +36.26 ± 14.53 0 34 131 84 1 +71.89 ± 29.7 ↓
411784 ncm-dbt-03 583824 500 163 101 236 +43.3 ± 13.32 0 23 142 85 0 +88.0 ± 28.0 ↓
411783 ncm-dbt-04 568792 500 165 106 229 +41.19 ± 14.3 0 31 129 90 0 +83.57 ± 29.93 ↓
411782 ncm-dbt-02 584369 500 156 100 244 +39.08 ± 14.04 0 30 134 86 0 +79.17 ± 29.25 ↓
411781 ncm-dbt-03 586350 500 153 103 244 +34.86 ± 13.63 0 28 145 76 1 +68.99 ± 27.73 ↓
411780 ncm-dbt-01 583237 500 156 102 242 +37.67 ± 14.48 0 32 134 82 2 +73.34 ± 29.28 ↓
411779 ncm-dbt-05 584790 500 152 111 237 +28.56 ± 14.79 2 35 133 80 0 +60.36 ± 29.46 ↓
411778 ncm-dbt-02 580282 500 151 105 244 +32.06 ± 13.57 1 27 147 75 0 +66.1 ± 27.46 ↓
411777 ncm-dbt-04 568395 500 165 95 240 +48.96 ± 14.61 0 30 120 100 0 +99.95 ± 31.16 ↓
411776 ncm-dbt-03 587494 500 172 97 231 +52.51 ± 14.79 0 29 118 102 1 +106.01 ± 31.43 ↓
411775 ncm-dbt-05 585211 500 164 109 227 +38.37 ± 14.4 0 31 135 82 2 +74.79 ± 29.13 ↓
411774 ncm-dbt-01 583070 500 155 107 238 +33.46 ± 14.35 0 35 132 83 0 +67.55 ± 29.58 ↓
410566 ncm-dbt-01 580821 500 174 95 231 +55.36 ± 14.39 0 26 119 105 0 +113.68 ± 31.27 ↓
410565 ncm-dbt-04 568951 500 157 100 243 +39.78 ± 13.39 0 25 143 82 0 +80.63 ± 27.93 ↓
410564 ncm-dbt-05 584495 500 164 119 217 +31.35 ± 13.8 0 31 144 74 1 +61.79 ± 27.93 ↓
410563 ncm-dbt-02 585211 500 141 108 251 +22.96 ± 14.66 0 43 131 76 0 +46.13 ± 29.76 ↓
410562 ncm-dbt-03 584453 500 154 96 250 +40.48 ± 13.57 0 26 140 84 0 +82.1 ± 28.36 ↓
410561 ncm-dbt-01 583614 500 155 94 251 +42.6 ± 14.91 1 31 125 92 1 +86.52 ± 30.48 ↓
410560 ncm-dbt-04 567680 500 154 94 252 +41.9 ± 14.61 1 30 127 92 0 +86.52 ± 30.2 ↓
410559 ncm-dbt-02 586350 500 155 94 251 +42.6 ± 14.38 0 31 127 92 0 +86.52 ± 30.2 ↓
410558 ncm-dbt-05 586181 500 147 95 258 +36.26 ± 13.3 0 26 146 78 0 +73.34 ± 27.55 ↓
410557 ncm-dbt-03 586901 500 149 112 239 +25.76 ± 14.21 1 35 140 74 0 +53.22 ± 28.53 ↓
410556 ncm-dbt-01 583531 500 161 103 236 +40.48 ± 14.52 0 31 132 85 2 +79.17 ± 29.53 ↓
410555 ncm-dbt-04 570949 500 153 99 248 +37.67 ± 14.48 0 34 128 88 0 +76.25 ± 30.1 ↓
410554 ncm-dbt-02 581943 500 163 103 234 +41.89 ± 15.62 1 37 114 97 1 +85.04 ± 31.98 ↓
410553 ncm-dbt-05 583782 500 145 90 265 +38.37 ± 14.13 0 31 133 86 0 +77.71 ± 29.4 ↓
410552 ncm-dbt-03 589368 500 167 97 236 +48.96 ± 14.2 0 26 129 94 1 +98.44 ± 29.86 ↓
410551 ncm-dbt-01 582611 500 154 105 241 +34.16 ± 14.91 0 37 129 82 2 +66.1 ± 29.99 ↓
410550 ncm-dbt-04 570228 500 159 99 242 +41.89 ± 14.87 1 30 129 88 2 +83.57 ± 29.93 ↓
410549 ncm-dbt-02 587962 500 150 95 255 +38.37 ± 15.04 1 34 125 89 1 +77.71 ± 30.5 ↓
410548 ncm-dbt-03 584790 500 152 109 239 +29.95 ± 15.26 1 40 125 83 1 +60.36 ± 30.52 ↓
410547 ncm-dbt-05 580116 500 150 113 237 +25.76 ± 13.81 1 32 146 71 0 +53.22 ± 27.7 ↓
410546 ncm-dbt-04 571391 500 175 101 224 +51.8 ± 13.8 0 22 133 94 1 +104.49 ± 29.21 ↓
410545 ncm-dbt-01 581693 500 151 94 255 +39.78 ± 15.0 0 35 125 88 2 +77.71 ± 30.5 ↓
410544 ncm-dbt-03 586097 500 158 92 250 +46.13 ± 13.49 0 23 138 89 0 +93.95 ± 28.55 ↓
410543 ncm-dbt-02 586901 500 165 103 232 +43.3 ± 13.17 0 20 150 78 2 +85.04 ± 26.8 ↓
410542 ncm-dbt-05 583447 500 156 99 245 +39.78 ± 14.61 0 32 131 85 2 +77.71 ± 29.68 ↓

Commit

Commit ID 5c75c1c2fbb7bb4f0bf7c44fb855c415b788cbf7
Author Michael Chaly
Date 2023-03-05 15:06:03 UTC
Fix duplicated moves generation in movepicker in a some of cases movepicker returned some moves more than once which lead to them being searched more than once. This bug was possible because of how we use queen promotions - they are generated as a captures but are not included in position function which checks if move is a capture. Thus if any refutation (killer or countermove) was a queen promotion it was searched twice - once as a capture and one as a refutation. This patch affects various things, namely stats assignments for queen promotions and other moves if best move is queen promotion, also some heuristics in search and qsearch. With this patch every queen promotion is now considered a capture. After this patch number of found duplicated moves is 0 during normal 13 depth bench run. Passed STC: https://tests.stockfishchess.org/tests/view/63f77e01e74a12625bcd87d7 LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 80920 W: 21455 L: 21289 D: 38176 Ptnml(0-2): 198, 8839, 22241, 8963, 219 Passed LTC: https://tests.stockfishchess.org/tests/view/63f7e020e74a12625bcd9a76 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 89712 W: 23674 L: 23533 D: 42505 Ptnml(0-2): 24, 8737, 27202, 8860, 33 closes https://github.com/official-stockfish/Stockfish/pull/4405 bench 4681731
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