Dev Builds » 20230325-0817

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 07:00:42 584341 4006 1258 849 1899 +35.6 ± 5.06 1 263 1070 664 5 +71.23 ± 10.34
ncm-dbt-02 06:58:11 585400 4000 1183 799 2018 +33.46 ± 5.26 4 293 1027 667 9 +66.64 ± 10.61
ncm-dbt-03 06:59:35 587328 3994 1238 806 1950 +37.73 ± 5.21 3 269 1026 691 8 +75.45 ± 10.6
ncm-dbt-04 06:58:41 571497 4000 1256 812 1932 +38.72 ± 5.09 2 254 1045 696 3 +78.25 ± 10.48
ncm-dbt-05 07:00:51 582280 4000 1228 793 1979 +37.93 ± 5.13 1 262 1046 683 8 +75.52 ± 10.48
20000 6163 4059 9778 +36.69 ± 2.3 11 1341 5214 3401 33 +73.41 ± 4.7

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
394502 ncm-dbt-01 583740 6 2 1 3 +58.33 ± 98.71 0 0 2 1 0 +120.24 ± 264.77 ↓
394501 ncm-dbt-03 588004 494 144 102 248 +29.61 ± 14.76 0 36 136 72 3 +55.32 ± 29.02 ↓
394500 ncm-dbt-05 583866 500 161 94 245 +46.84 ± 15.14 1 29 125 92 3 +92.46 ± 30.47 ↓
394499 ncm-dbt-04 573729 500 160 103 237 +39.78 ± 14.48 0 33 127 90 0 +80.63 ± 30.22 ↓
394498 ncm-dbt-02 587622 500 147 104 249 +29.95 ± 15.39 1 40 126 81 2 +58.93 ± 30.4 ↓
394497 ncm-dbt-01 586139 500 146 100 254 +32.05 ± 14.9 0 40 124 86 0 +64.66 ± 30.65 ↓
394496 ncm-dbt-03 589240 500 153 105 242 +33.46 ± 14.35 0 35 132 83 0 +67.55 ± 29.58 ↓
394495 ncm-dbt-02 584874 500 138 104 258 +23.66 ± 13.65 0 35 146 69 0 +47.55 ± 27.73 ↓
394494 ncm-dbt-05 581402 500 155 99 246 +39.08 ± 14.83 0 36 122 92 0 +79.17 ± 30.91 ↓
394493 ncm-dbt-04 573082 500 164 104 232 +41.89 ± 13.8 0 27 136 87 0 +85.04 ± 28.92 ↓
394492 ncm-dbt-01 581569 500 160 115 225 +31.35 ± 14.2 0 34 138 77 1 +61.79 ± 28.77 ↓
394491 ncm-dbt-03 587028 500 156 107 237 +34.16 ± 15.29 2 35 126 86 1 +70.44 ± 30.38 ↓
394490 ncm-dbt-02 582402 500 147 96 257 +35.56 ± 15.25 1 38 120 91 0 +73.34 ± 31.18 ↓
394489 ncm-dbt-04 568275 500 147 97 256 +34.86 ± 14.31 0 34 132 84 0 +70.44 ± 29.57 ↓
394488 ncm-dbt-05 579001 500 150 104 246 +32.05 ± 14.64 0 38 128 84 0 +64.66 ± 30.12 ↓
394487 ncm-dbt-01 583028 500 152 98 250 +37.67 ± 13.67 1 25 143 81 0 +77.71 ± 27.95 ↓
394486 ncm-dbt-03 585169 500 166 101 233 +45.42 ± 15.32 0 35 117 96 2 +89.48 ± 31.58 ↓
394485 ncm-dbt-02 588260 500 153 110 237 +29.95 ± 15.02 1 38 129 81 1 +60.36 ± 30.0 ↓
394484 ncm-dbt-04 571672 500 155 108 237 +32.76 ± 14.69 1 35 130 84 0 +67.55 ± 29.85 ↓
394483 ncm-dbt-05 581569 500 164 89 247 +52.51 ± 13.84 0 22 132 95 1 +106.01 ± 29.35 ↓
394482 ncm-dbt-01 585169 500 153 107 240 +32.05 ± 14.12 0 33 139 77 1 +63.23 ± 28.63 ↓
394481 ncm-dbt-03 589539 500 157 96 247 +42.6 ± 13.7 0 26 137 87 0 +86.52 ± 28.77 ↓
394480 ncm-dbt-02 586477 500 146 92 262 +37.67 ± 15.38 0 40 117 92 1 +74.79 ± 31.57 ↓
394479 ncm-dbt-04 571029 500 161 103 236 +40.48 ± 14.39 0 32 128 90 0 +82.1 ± 30.08 ↓
394478 ncm-dbt-05 579826 500 155 107 238 +33.46 ± 14.21 0 34 134 82 0 +67.55 ± 29.3 ↓
394477 ncm-dbt-01 582611 500 150 101 249 +34.16 ± 15.29 0 42 117 91 0 +68.99 ± 31.56 ↓
394476 ncm-dbt-03 587452 500 147 99 254 +33.46 ± 14.74 0 38 126 86 0 +67.55 ± 30.39 ↓
394475 ncm-dbt-02 586562 500 160 106 234 +37.67 ± 15.25 0 39 119 91 1 +74.79 ± 31.31 ↓
394474 ncm-dbt-04 571110 500 161 91 248 +48.96 ± 14.07 1 21 137 89 2 +98.44 ± 28.66 ↓
394473 ncm-dbt-05 581860 500 141 104 255 +25.76 ± 14.73 0 41 132 76 1 +50.38 ± 29.62 ↓
394472 ncm-dbt-01 584916 500 173 109 218 +44.72 ± 13.55 0 22 144 82 2 +88.0 ± 27.7 ↓
394471 ncm-dbt-03 584916 500 160 97 243 +44.01 ± 14.73 0 31 127 90 2 +86.52 ± 30.2 ↓
394470 ncm-dbt-02 580530 500 148 82 270 +46.13 ± 14.32 1 24 135 88 2 +92.46 ± 29.02 ↓
394469 ncm-dbt-04 569031 500 144 103 253 +28.55 ± 14.54 0 39 131 80 0 +57.5 ± 29.74 ↓
394468 ncm-dbt-01 586604 500 158 116 226 +29.25 ± 14.84 0 40 129 80 1 +57.5 ± 30.0 ↓
394467 ncm-dbt-05 585379 500 160 105 235 +38.37 ± 14.26 0 31 134 84 1 +76.25 ± 29.26 ↓
394466 ncm-dbt-03 587282 500 155 99 246 +39.08 ± 14.83 1 33 125 91 0 +80.63 ± 30.5 ↓
394465 ncm-dbt-02 586477 500 144 105 251 +27.15 ± 14.7 0 39 135 74 2 +51.8 ± 29.22 ↓
394464 ncm-dbt-04 574054 500 164 103 233 +42.6 ± 14.78 0 33 124 92 1 +85.04 ± 30.63 ↓
394463 ncm-dbt-05 585337 500 142 91 267 +35.56 ± 14.22 0 31 139 78 2 +68.99 ± 28.6 ↓
394462 ncm-dbt-01 585295 500 164 102 234 +43.3 ± 13.88 0 27 134 89 0 +88.0 ± 29.2 ↓

Commit

Commit ID 24b37e4586ba610d331048446bd036bec5544c4f
Author pb00067
Date 2023-03-25 08:17:44 UTC
Verified SEE pruning for capturing and checking moves. Patch analyzes field after SEE exchanges concluded with a recapture by the opponent: if opponent Queen/Rook/King results under attack after the exchanges, we consider the move sharp and don't prune it. Important note: By accident I forgot to adjust 'occupied' when the king takes part in the exchanges. As result of this a move is considered sharp too, when opponent king apparently can evade check by recapturing. Surprisingly this seems contribute to patch's strength. STC: https://tests.stockfishchess.org/tests/view/640b16132644b62c33947397 LLR: 2.96 (-2.94,2.94) <0.00,2.00> Total: 116400 W: 31239 L: 30817 D: 54344 Ptnml(0-2): 350, 12742, 31618, 13116, 374 LTC: https://tests.stockfishchess.org/tests/view/640c88092644b62c3394c1c5 LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 177600 W: 47988 L: 47421 D: 82191 Ptnml(0-2): 62, 16905, 54317, 17436, 80 closes https://github.com/official-stockfish/Stockfish/pull/4453 bench: 5012145
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