Dev Builds » 20220308-1919

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 06:54:18 578238 4016 1041 1041 1934 -0.0 ± 5.13 1 454 1098 454 1 -0.0 ± 10.23
ncm-dbt-02 06:53:08 586056 3984 966 1033 1985 -5.84 ± 5.16 2 482 1091 415 2 -11.69 ± 10.26
ncm-dbt-03 06:53:20 585473 4000 975 1048 1977 -6.34 ± 5.01 4 457 1148 390 1 -12.17 ± 9.94
ncm-dbt-04 06:52:49 569267 4000 1002 1042 1956 -3.47 ± 5.17 6 460 1105 426 3 -6.43 ± 10.19
ncm-dbt-05 06:52:58 583726 4000 977 1079 1944 -8.86 ± 5.23 9 495 1088 405 3 -16.69 ± 10.28
20000 4961 5243 9796 -4.9 ± 2.3 22 2348 5530 2090 10 -9.38 ± 4.55

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
417074 ncm-dbt-01 577807 16 1 5 10 -88.68 ± 65.24 0 4 4 0 0 -190.76 ± 189.19 ↓
417073 ncm-dbt-02 587452 484 120 118 246 +1.43 ± 15.03 0 55 131 55 1 +1.44 ± 29.72 ↓
417072 ncm-dbt-04 570029 500 131 136 233 -3.47 ± 14.09 1 52 149 47 1 -6.95 ± 27.43 ↓
417071 ncm-dbt-03 586393 500 128 129 243 -0.69 ± 15.11 0 62 127 61 0 -1.39 ± 30.29 ↓
417070 ncm-dbt-05 582694 500 133 124 243 +6.25 ± 15.58 0 61 119 70 0 +12.51 ± 31.26 ↓
417069 ncm-dbt-01 577889 500 133 134 233 -0.69 ± 14.23 0 55 141 54 0 -1.39 ± 28.5 ↓
417068 ncm-dbt-02 585759 500 109 127 264 -12.51 ± 13.96 0 62 144 44 0 -25.06 ± 28.08 ↓
417067 ncm-dbt-04 570029 500 123 137 240 -9.73 ± 14.38 0 63 138 49 0 -19.48 ± 28.88 ↓
417066 ncm-dbt-03 588174 500 120 126 254 -4.17 ± 15.41 1 64 125 60 0 -6.95 ± 30.53 ↓
417065 ncm-dbt-05 584748 500 126 126 248 -0.0 ± 13.9 0 52 146 52 0 -0.0 ± 27.84 ↓
417064 ncm-dbt-01 578836 500 141 120 239 +14.6 ± 14.78 0 48 134 67 1 +27.85 ± 29.39 ↓
417063 ncm-dbt-02 586477 500 119 125 256 -4.17 ± 13.2 0 50 156 44 0 -8.34 ± 26.45 ↓
417062 ncm-dbt-04 570188 500 128 131 241 -2.08 ± 15.24 1 61 128 60 0 -2.78 ± 30.16 ↓
417061 ncm-dbt-05 581527 500 122 131 247 -6.25 ± 14.34 1 56 145 47 1 -12.51 ± 27.96 ↓
417060 ncm-dbt-03 585717 500 132 118 250 +9.73 ± 14.64 1 48 137 64 0 +20.87 ± 29.01 ↓
417059 ncm-dbt-01 579992 500 125 131 244 -4.17 ± 14.02 0 56 144 50 0 -8.34 ± 28.1 ↓
417058 ncm-dbt-02 586223 500 120 129 251 -6.25 ± 14.47 1 58 140 51 0 -11.12 ± 28.63 ↓
417057 ncm-dbt-04 566809 500 124 136 240 -8.34 ± 14.78 1 62 135 52 0 -15.3 ± 29.27 ↓
417056 ncm-dbt-03 583698 500 110 138 252 -19.48 ± 13.73 0 65 149 35 1 -40.48 ± 27.34 ↓
417055 ncm-dbt-01 577520 500 143 133 224 +6.95 ± 14.14 0 49 142 59 0 +13.9 ± 28.36 ↓
417054 ncm-dbt-05 585000 500 124 144 232 -13.9 ± 14.73 2 63 138 47 0 -25.06 ± 28.88 ↓
417053 ncm-dbt-02 585253 500 124 126 250 -1.39 ± 14.93 0 60 133 56 1 -4.17 ± 29.53 ↓
417052 ncm-dbt-04 569789 500 133 130 237 +2.08 ± 15.48 0 61 127 60 2 +1.39 ± 30.29 ↓
417051 ncm-dbt-03 583028 500 107 124 269 -11.82 ± 12.93 0 54 159 37 0 -23.66 ± 25.99 ↓
417050 ncm-dbt-01 577602 500 122 129 249 -4.86 ± 15.35 0 67 123 60 0 -9.73 ± 30.78 ↓
417049 ncm-dbt-05 580116 500 119 142 239 -15.99 ± 15.14 1 71 128 50 0 -30.65 ± 30.16 ↓
417048 ncm-dbt-02 584034 500 123 129 248 -4.17 ± 14.54 0 60 136 54 0 -8.34 ± 29.15 ↓
417047 ncm-dbt-04 568236 500 123 119 258 +2.78 ± 15.17 2 54 132 62 0 +8.34 ± 29.66 ↓
417046 ncm-dbt-03 584495 500 111 138 251 -18.78 ± 13.81 2 60 151 37 0 -34.86 ± 27.08 ↓
417045 ncm-dbt-01 579331 500 124 129 247 -3.47 ± 14.99 0 63 129 58 0 -6.95 ± 30.04 ↓
417044 ncm-dbt-05 583614 500 106 138 256 -22.26 ± 14.6 2 69 138 41 0 -41.89 ± 28.84 ↓
417043 ncm-dbt-02 587282 500 122 136 242 -9.73 ± 15.62 0 73 118 59 0 -19.48 ± 31.39 ↓
417042 ncm-dbt-03 585042 500 142 145 213 -2.08 ± 13.56 0 51 151 48 0 -4.17 ± 27.16 ↓
417041 ncm-dbt-04 570509 500 121 135 244 -9.73 ± 13.45 0 56 152 42 0 -19.48 ± 27.0 ↓
417040 ncm-dbt-01 578794 500 125 133 242 -5.56 ± 14.28 1 56 143 50 0 -9.73 ± 28.23 ↓
417039 ncm-dbt-05 585632 500 129 130 241 -0.69 ± 14.74 1 55 139 54 1 -1.39 ± 28.76 ↓
417038 ncm-dbt-02 585970 500 129 143 228 -9.73 ± 14.89 1 64 133 52 0 -18.08 ± 29.53 ↓
417037 ncm-dbt-03 587240 500 125 130 245 -3.47 ± 13.69 0 53 149 48 0 -6.95 ± 27.43 ↓
417036 ncm-dbt-04 568554 500 119 118 263 +0.7 ± 14.23 1 51 144 54 0 +2.78 ± 28.1 ↓
417035 ncm-dbt-05 586477 500 118 144 238 -18.08 ± 15.05 2 68 135 44 1 -34.86 ± 29.25 ↓
417034 ncm-dbt-01 576373 500 127 127 246 -0.0 ± 14.42 0 56 138 56 0 -0.0 ± 28.89 ↓

Commit

Commit ID eae0f8dd066b31102b6663a60c36fffccf4e1269
Author Michael Chaly
Date 2022-03-08 19:19:42 UTC
Decrease reductions in Lmr for some Pv nodes This patch makes us reduce less in Lmr at pv nodes in case of static eval being far away from static evaluation of position. Idea is that if it's the case then probably position is pretty complex so we can't be sure about how reliable LMR is so we need to reduce less. Passed STC: https://tests.stockfishchess.org/tests/view/6226276aa9d47c8160e81220 LLR: 2.94 (-2.94,2.94) <0.00,2.50> Total: 262696 W: 69944 L: 69239 D: 123513 Ptnml(0-2): 1399, 29702, 68436, 30417, 1394 Passed LTC: https://tests.stockfishchess.org/tests/view/6226b002a9d47c8160e82b91 LLR: 2.95 (-2.94,2.94) <0.50,3.00> Total: 64008 W: 17320 L: 16982 D: 29706 Ptnml(0-2): 60, 6378, 18811, 6674, 81 closes https://github.com/official-stockfish/Stockfish/pull/3957 bench 6678390
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