Dev Builds » 20211219-0703

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 06:51:54 584215 4000 837 1156 2007 -27.77 ± 5.23 14 608 1062 315 1 -53.58 ± 10.41
ncm-dbt-02 06:53:28 587048 4000 816 1152 2032 -29.25 ± 5.14 7 625 1065 303 0 -57.68 ± 10.39
ncm-dbt-03 06:53:12 586611 4000 826 1161 2013 -29.17 ± 5.18 5 635 1052 306 2 -58.21 ± 10.47
ncm-dbt-04 06:51:48 571334 4016 875 1193 1948 -27.57 ± 5.1 2 621 1081 301 3 -55.67 ± 10.3
ncm-dbt-05 06:54:01 584058 3984 889 1187 1908 -26.04 ± 5.27 5 623 1033 327 4 -52.19 ± 10.58
20000 4243 5849 9908 -27.96 ± 2.32 33 3112 5293 1552 10 -55.47 ± 4.66

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
399690 ncm-dbt-04 572114 16 3 3 10 0.0 ± 60.91 0 1 6 1 0 -0.0 ± 125.57
399689 ncm-dbt-05 586646 484 115 132 237 -12.21 ± 14.5 0 62 135 45 0 -24.45 ± 29.16
399688 ncm-dbt-02 583992 500 108 151 241 -29.95 ± 14.11 1 75 140 34 0 -58.93 ± 28.51
399687 ncm-dbt-03 585548 500 85 153 262 -47.55 ± 14.4 1 93 130 25 1 -96.94 ± 29.72
399686 ncm-dbt-01 585717 500 106 158 236 -36.26 ± 14.26 1 82 135 32 0 -71.89 ± 29.14
399685 ncm-dbt-04 571592 500 112 154 234 -29.25 ± 15.22 0 85 123 41 1 -60.36 ± 30.78
399684 ncm-dbt-05 586097 500 99 147 254 -33.46 ± 15.37 2 83 128 35 2 -67.55 ± 30.12
399683 ncm-dbt-02 585674 500 94 146 260 -36.26 ± 14.79 2 83 130 35 0 -70.44 ± 29.84
399682 ncm-dbt-01 586646 500 106 152 242 -32.05 ± 15.52 3 82 123 42 0 -60.36 ± 30.78
399681 ncm-dbt-03 585295 500 107 150 243 -29.95 ± 15.75 1 87 117 44 1 -60.36 ± 31.55
399680 ncm-dbt-04 571793 500 109 143 248 -23.66 ± 14.32 0 74 136 40 0 -47.55 ± 29.1
399679 ncm-dbt-05 580447 500 106 159 235 -36.97 ± 14.57 0 88 127 35 0 -74.79 ± 30.24
399678 ncm-dbt-01 583112 500 119 143 238 -16.69 ± 13.77 0 64 146 40 0 -33.46 ± 27.78
399677 ncm-dbt-02 587919 500 100 144 256 -30.65 ± 14.81 0 84 126 40 0 -61.79 ± 30.39
399676 ncm-dbt-03 586054 500 108 141 251 -22.96 ± 14.27 0 73 137 40 0 -46.13 ± 28.97
399675 ncm-dbt-04 571592 500 94 139 267 -31.35 ± 14.47 0 82 131 37 0 -63.23 ± 29.72
399674 ncm-dbt-05 580406 500 114 150 236 -25.06 ± 14.81 0 78 131 40 1 -51.8 ± 29.75
399673 ncm-dbt-02 585885 500 99 138 263 -27.15 ± 15.2 0 84 121 45 0 -54.65 ± 31.04
399672 ncm-dbt-03 586604 500 99 152 249 -36.97 ± 14.83 0 90 123 37 0 -74.79 ± 30.78
399671 ncm-dbt-01 581735 500 91 140 269 -34.16 ± 14.65 2 80 133 35 0 -66.1 ± 29.44
399670 ncm-dbt-04 570629 500 118 153 229 -24.36 ± 14.88 1 76 130 43 0 -47.55 ± 29.89
399669 ncm-dbt-05 582152 500 112 142 246 -20.87 ± 15.13 0 78 124 48 0 -41.89 ± 30.66
399668 ncm-dbt-02 589069 500 104 153 243 -34.16 ± 13.44 2 71 151 26 0 -66.1 ± 26.87
399667 ncm-dbt-04 570709 500 114 160 226 -32.05 ± 14.38 0 82 132 36 0 -64.66 ± 29.59
399666 ncm-dbt-03 588856 500 106 141 253 -24.36 ± 14.37 1 72 138 39 0 -47.55 ± 28.83
399665 ncm-dbt-01 583656 500 98 137 265 -27.15 ± 14.18 1 73 140 36 0 -53.22 ± 28.53
399664 ncm-dbt-05 582318 500 109 154 237 -31.35 ± 14.34 0 81 133 36 0 -63.23 ± 29.45
399663 ncm-dbt-04 569869 500 106 140 254 -23.66 ± 14.45 0 74 137 38 1 -48.96 ± 28.96
399662 ncm-dbt-02 588132 500 108 136 256 -19.48 ± 14.13 1 66 143 40 0 -37.67 ± 28.18
399661 ncm-dbt-03 587494 500 102 140 258 -26.45 ± 15.03 2 76 130 42 0 -50.38 ± 29.88
399660 ncm-dbt-01 584537 500 90 137 273 -32.75 ± 15.32 3 81 126 40 0 -61.79 ± 30.39
399659 ncm-dbt-04 570268 500 107 148 245 -28.55 ± 13.46 0 72 147 31 0 -57.5 ± 27.53
399658 ncm-dbt-05 586097 500 113 154 233 -28.55 ± 15.05 2 77 132 38 1 -56.07 ± 29.61
399657 ncm-dbt-02 588728 500 95 139 266 -30.65 ± 15.31 1 85 121 43 0 -60.36 ± 31.04
399656 ncm-dbt-03 585548 500 108 140 252 -22.27 ± 14.08 0 71 140 39 0 -44.72 ± 28.57
399655 ncm-dbt-01 584622 500 116 145 239 -20.17 ± 14.96 1 72 133 43 1 -40.48 ± 29.51
399654 ncm-dbt-04 573446 500 112 153 235 -28.55 ± 14.41 1 75 139 34 1 -57.5 ± 28.65
399653 ncm-dbt-03 587494 500 111 144 245 -22.96 ± 14.27 0 73 137 40 0 -46.13 ± 28.97
399652 ncm-dbt-05 588302 500 121 149 230 -19.48 ± 15.4 1 76 123 50 0 -37.67 ± 30.78
399651 ncm-dbt-02 586985 500 108 145 247 -25.76 ± 14.47 0 77 133 40 0 -51.8 ± 29.48
399650 ncm-dbt-01 583698 500 111 144 245 -22.96 ± 15.53 3 74 126 47 0 -41.89 ± 30.41

Commit

Commit ID fb7d3ab32ebd7a6514bded459b4aa442276f6cda
Author Michael Chaly
Date 2021-12-19 07:03:41 UTC
Reintroduce futility pruning for captures This is a reintroduction of an idea that was simplified away approximately 1 year ago. There are some tweaks to it : a) exclude promotions; b) exclude Pv Nodes from it - Pv Nodes logic for captures is really different from non Pv nodes so it makes a lot of sense; c) use a big grain of capture history - idea is taken from my recent patches in futility pruning. passed STC https://tests.stockfishchess.org/tests/view/61bd90f857a0d0f327c373b7 LLR: 2.96 (-2.94,2.94) <0.00,2.50> Total: 86640 W: 22474 L: 22110 D: 42056 Ptnml(0-2): 268, 9732, 22963, 10082, 275 passed LTC https://tests.stockfishchess.org/tests/view/61be094457a0d0f327c38aa3 LLR: 2.95 (-2.94,2.94) <0.50,3.00> Total: 23240 W: 6079 L: 5838 D: 11323 Ptnml(0-2): 14, 2261, 6824, 2512, 9 https://github.com/official-stockfish/Stockfish/pull/3864 bench 4493723
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