Dev Builds » 20240723-1724

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 08:37:41 585132 4998 1877 734 2387 +80.89 ± 4.4 2 142 1077 1267 11 +170.05 ± 10.34
ncm-dbt-02 08:36:48 587605 5016 1893 730 2393 +82.05 ± 4.43 2 145 1063 1284 14 +172.31 ± 10.42
ncm-dbt-03 08:37:05 588128 5014 1858 761 2395 +77.26 ± 4.53 4 175 1057 1262 9 +162.17 ± 10.47
ncm-dbt-05 08:37:25 588398 4972 1859 688 2425 +83.39 ± 4.47 2 145 1033 1292 14 +175.53 ± 10.58
20000 7487 2913 9600 +80.89 ± 2.23 10 607 4230 5105 48 +169.97 ± 5.22

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
371109 ncm-dbt-03 587325 14 5 3 6 +49.96 ± 94.42 0 1 3 3 0 +102.11 ± 234.06 ↓
371108 ncm-dbt-02 583908 16 7 2 7 +112.26 ± 65.75 0 0 3 5 0 +254.61 ± 287.37 ↓
371107 ncm-dbt-05 589582 472 191 68 213 +92.67 ± 14.27 0 12 90 133 1 +198.79 ± 36.09 ↓
371106 ncm-dbt-01 584159 498 194 78 226 +82.44 ± 14.17 1 14 102 132 0 +177.16 ± 33.85 ↓
371105 ncm-dbt-03 586774 500 190 78 232 +79.17 ± 14.48 0 19 101 129 1 +165.8 ± 34.05 ↓
371104 ncm-dbt-02 586604 500 184 61 255 +87.26 ± 13.65 0 13 101 136 0 +187.16 ± 33.99 ↓
371103 ncm-dbt-05 588430 500 184 76 240 +76.25 ± 13.81 0 16 110 124 0 +160.64 ± 32.5 ↓
371102 ncm-dbt-01 584622 500 185 70 245 +81.36 ± 13.81 0 12 114 121 3 +167.53 ± 31.71 ↓
371101 ncm-dbt-03 589796 500 185 77 238 +76.25 ± 13.51 0 14 114 122 0 +160.64 ± 31.79 ↓
371100 ncm-dbt-02 587197 500 190 82 228 +76.25 ± 13.81 0 14 116 118 2 +157.24 ± 31.47 ↓
371099 ncm-dbt-05 589240 500 191 67 242 +88.0 ± 14.41 1 15 93 141 0 +190.85 ± 35.52 ↓
371098 ncm-dbt-01 585084 500 190 90 220 +70.43 ± 13.62 0 15 121 113 1 +145.54 ± 30.73 ↓
371097 ncm-dbt-03 588217 500 199 78 223 +85.78 ± 14.22 0 14 104 129 3 +178.11 ± 33.48 ↓
371096 ncm-dbt-02 586985 500 190 61 249 +91.71 ± 14.63 1 13 95 138 3 +194.57 ± 35.13 ↓
371095 ncm-dbt-05 588217 500 186 61 253 +88.74 ± 13.83 0 12 103 133 2 +187.16 ± 33.6 ↓
371094 ncm-dbt-01 586477 500 191 72 237 +84.3 ± 14.18 0 14 106 127 3 +174.55 ± 33.13 ↓
371093 ncm-dbt-03 588813 500 194 81 225 +79.9 ± 15.06 1 21 92 136 0 +171.02 ± 35.61 ↓
371092 ncm-dbt-02 590010 500 188 77 235 +78.44 ± 14.02 0 17 105 128 0 +165.8 ± 33.35 ↓
371091 ncm-dbt-05 585421 500 184 69 247 +81.36 ± 14.54 0 18 101 129 2 +169.27 ± 34.05 ↓
371090 ncm-dbt-01 584495 500 177 72 251 +74.06 ± 14.18 0 18 110 121 1 +153.86 ± 32.54 ↓
371089 ncm-dbt-03 588217 500 176 70 254 +74.79 ± 15.17 3 16 104 126 1 +160.64 ± 33.54 ↓
371088 ncm-dbt-02 588217 500 198 77 225 +85.78 ± 13.77 0 12 107 129 2 +179.9 ± 32.89 ↓
371087 ncm-dbt-05 583405 500 181 85 234 +67.54 ± 13.95 0 18 119 112 1 +138.99 ± 31.13 ↓
371086 ncm-dbt-03 588260 500 184 76 240 +76.25 ± 15.09 0 23 98 127 2 +157.24 ± 34.53 ↓
371085 ncm-dbt-01 582152 500 188 77 235 +78.44 ± 13.88 0 16 107 127 0 +165.8 ± 33.0 ↓
371084 ncm-dbt-02 590053 500 173 77 250 +67.54 ± 13.8 0 17 121 111 1 +138.99 ± 30.8 ↓
371083 ncm-dbt-05 587240 500 180 65 255 +81.37 ± 13.2 0 11 113 126 0 +172.78 ± 31.83 ↓
371082 ncm-dbt-01 584285 500 184 67 249 +82.83 ± 14.14 0 15 105 128 2 +172.78 ± 33.32 ↓
371081 ncm-dbt-03 585548 500 185 71 244 +80.63 ± 14.23 0 17 103 129 1 +169.27 ± 33.7 ↓
371080 ncm-dbt-02 585084 500 185 71 244 +80.63 ± 13.49 0 11 116 121 2 +167.53 ± 31.34 ↓
371079 ncm-dbt-01 589924 500 191 69 240 +86.52 ± 13.32 0 11 106 133 0 +185.33 ± 33.03 ↓
371078 ncm-dbt-05 590868 500 183 59 258 +88.0 ± 13.81 1 9 107 131 2 +187.16 ± 32.81 ↓
371077 ncm-dbt-02 589454 500 207 76 217 +93.2 ± 14.51 0 16 89 143 2 +198.34 ± 36.31 ↓
371076 ncm-dbt-03 590696 500 179 82 239 +68.27 ± 14.67 0 24 105 121 0 +142.26 ± 33.37 ↓
371075 ncm-dbt-05 593239 500 188 82 230 +74.79 ± 14.49 0 19 108 121 2 +153.86 ± 32.88 ↓
371074 ncm-dbt-03 589839 500 179 83 238 +67.54 ± 13.65 0 16 123 110 1 +138.99 ± 30.46 ↓
371073 ncm-dbt-02 586139 500 184 74 242 +77.71 ± 14.72 0 22 96 132 0 +164.07 ± 34.9 ↓
371072 ncm-dbt-01 585928 500 190 73 237 +82.84 ± 14.44 1 16 98 135 0 +178.11 ± 34.58 ↓
371065 ncm-dbt-05 588345 500 191 56 253 +96.19 ± 14.71 0 15 89 142 4 +202.15 ± 36.32 ↓
371064 ncm-dbt-02 590010 500 187 72 241 +81.37 ± 13.81 1 10 114 123 2 +171.02 ± 31.66 ↓
371063 ncm-dbt-03 585928 500 182 62 256 +85.04 ± 13.13 0 10 110 130 0 +181.7 ± 32.28 ↓
371062 ncm-dbt-01 584201 500 187 66 247 +85.78 ± 13.46 0 11 108 130 1 +181.7 ± 32.68 ↓

Commit

Commit ID 836154acb5ba447a46196a64d6bbab5a5b31ea1b
Author Michael Chaly
Date 2024-07-23 17:24:00 UTC
Introduce pre-qsearch ttmove extensions at pv nodes The idea is that we are about to dive into qsearch (next search depth is <= 0) but since we have the move in transposition table we should extend that move and evaluate it with more precise search - because branch seems important. Passed STC: https://tests.stockfishchess.org/tests/view/6699d2564ff211be9d4ec488 LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 83104 W: 21789 L: 21401 D: 39914 Ptnml(0-2): 293, 9748, 21128, 10044, 339 Passed LTC: https://tests.stockfishchess.org/tests/view/669b3f1a4ff211be9d4ec602 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 136098 W: 34636 L: 34111 D: 67351 Ptnml(0-2): 105, 14882, 37550, 15407, 105 closes https://github.com/official-stockfish/Stockfish/pull/5512 bench 1526129
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