Dev Builds » 20240601-1758

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 06:48:34 584135 4000 1454 629 1917 +72.7 ± 4.92 0 134 914 945 7 +150.93 ± 11.21
ncm-dbt-02 06:46:54 586601 4000 1471 629 1900 +74.25 ± 5.13 5 142 873 966 14 +154.07 ± 11.51
ncm-dbt-03 06:48:20 586425 4000 1468 591 1941 +77.43 ± 4.89 0 116 902 971 11 +161.07 ± 11.27
ncm-dbt-04 06:47:48 571474 4000 1479 633 1888 +74.61 ± 5.03 2 133 897 953 15 +154.07 ± 11.33
ncm-dbt-05 06:49:06 584050 4000 1483 605 1912 +77.52 ± 4.89 1 116 896 978 9 +161.92 ± 11.32
20000 7355 3087 9558 +75.3 ± 2.22 8 641 4482 4813 56 +156.39 ± 5.07

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
388028 ncm-dbt-01 582694 500 194 91 215 +72.61 ± 13.39 0 13 122 114 1 +150.51 ± 30.49 ↓
388027 ncm-dbt-03 585421 500 195 82 223 +79.9 ± 13.77 0 15 107 128 0 +169.27 ± 32.98 ↓
388026 ncm-dbt-05 585843 500 190 80 230 +77.7 ± 13.86 0 14 114 120 2 +160.64 ± 31.79 ↓
388025 ncm-dbt-02 587707 500 177 77 246 +70.43 ± 14.05 0 17 118 113 2 +143.89 ± 31.26 ↓
388024 ncm-dbt-04 570108 500 187 75 238 +79.17 ± 14.34 0 18 103 128 1 +165.8 ± 33.7 ↓
388023 ncm-dbt-03 584495 500 181 65 254 +82.1 ± 13.83 0 13 110 125 2 +171.02 ± 32.42 ↓
388022 ncm-dbt-01 582569 500 182 76 242 +74.79 ± 14.2 0 18 109 122 1 +155.54 ± 32.7 ↓
388021 ncm-dbt-05 585759 500 191 87 222 +73.34 ± 13.57 1 12 119 118 0 +155.54 ± 30.96 ↓
388020 ncm-dbt-04 570509 500 178 77 245 +71.16 ± 14.08 1 15 117 116 1 +148.85 ± 31.38 ↓
388019 ncm-dbt-02 584369 500 193 81 226 +79.17 ± 13.29 0 11 117 121 1 +165.8 ± 31.17 ↓
388018 ncm-dbt-05 579083 500 170 80 250 +63.23 ± 13.91 0 19 123 107 1 +129.35 ± 30.56 ↓
388017 ncm-dbt-01 584537 500 170 78 252 +64.66 ± 14.12 0 20 119 110 1 +132.54 ± 31.18 ↓
388016 ncm-dbt-03 585885 500 183 70 247 +79.9 ± 13.31 0 12 113 125 0 +169.27 ± 31.88 ↓
388015 ncm-dbt-04 574216 500 194 88 218 +74.79 ± 13.91 0 15 116 117 2 +153.86 ± 31.51 ↓
388014 ncm-dbt-02 585295 500 179 72 249 +75.52 ± 15.06 0 23 99 126 2 +155.54 ± 34.37 ↓
388013 ncm-dbt-04 571230 500 190 64 246 +89.48 ± 14.3 0 14 99 134 3 +187.16 ± 34.38 ↓
388012 ncm-dbt-05 586562 500 196 66 238 +92.45 ± 14.35 0 14 95 138 3 +194.57 ± 35.13 ↓
388011 ncm-dbt-02 586181 500 177 75 248 +71.88 ± 14.67 0 22 105 122 1 +148.85 ± 33.38 ↓
388010 ncm-dbt-01 583531 500 176 86 238 +63.23 ± 13.77 0 19 122 109 0 +130.94 ± 30.71 ↓
388009 ncm-dbt-03 587409 500 189 86 225 +72.61 ± 14.13 0 17 115 116 2 +148.85 ± 31.72 ↓
388008 ncm-dbt-05 581943 500 194 80 226 +80.63 ± 13.64 0 13 111 125 1 +169.27 ± 32.25 ↓
388007 ncm-dbt-04 572396 500 178 81 241 +68.27 ± 14.67 0 21 114 112 3 +137.37 ± 31.96 ↓
388006 ncm-dbt-02 588047 500 182 65 253 +82.83 ± 14.72 1 16 100 131 2 +174.55 ± 34.22 ↓
388005 ncm-dbt-01 586012 500 179 85 236 +66.1 ± 14.17 0 20 117 112 1 +135.76 ± 31.48 ↓
388004 ncm-dbt-03 587070 500 178 76 246 +71.88 ± 13.37 0 13 123 113 1 +148.85 ± 30.34 ↓
388003 ncm-dbt-05 584495 500 180 72 248 +76.25 ± 13.81 0 16 110 124 0 +160.64 ± 32.5 ↓
388002 ncm-dbt-04 572800 500 188 103 209 +59.64 ± 14.32 0 23 120 106 1 +121.46 ± 31.09 ↓
388001 ncm-dbt-01 585928 500 190 62 248 +90.96 ± 13.4 0 9 106 133 2 +192.71 ± 32.93 ↓
388000 ncm-dbt-02 587113 500 185 82 233 +72.61 ± 14.69 2 14 116 115 3 +150.51 ± 31.54 ↓
387999 ncm-dbt-03 587367 500 169 71 260 +68.99 ± 14.42 0 20 114 114 2 +140.62 ± 31.94 ↓
387998 ncm-dbt-02 585928 500 196 95 209 +71.16 ± 14.64 0 21 109 118 2 +145.54 ± 32.74 ↓
387997 ncm-dbt-05 580033 500 173 71 256 +71.88 ± 13.52 0 15 118 117 0 +150.51 ± 31.19 ↓
387996 ncm-dbt-04 570348 500 181 75 244 +74.79 ± 14.34 1 14 116 116 3 +153.86 ± 31.51 ↓
387995 ncm-dbt-03 586435 500 192 68 240 +88.0 ± 13.03 0 6 117 124 3 +183.51 ± 30.83 ↓
387994 ncm-dbt-01 583824 500 181 76 243 +74.06 ± 14.32 0 20 105 125 0 +155.54 ± 33.38 ↓
387993 ncm-dbt-02 588174 500 182 82 236 +70.44 ± 14.89 2 18 109 120 1 +148.85 ± 32.73 ↓
387992 ncm-dbt-03 587325 500 181 73 246 +76.25 ± 14.53 0 20 103 126 1 +158.93 ± 33.71 ↓
387991 ncm-dbt-01 583992 500 182 75 243 +75.52 ± 13.79 0 15 114 120 1 +157.24 ± 31.83 ↓
387990 ncm-dbt-04 570188 500 183 70 247 +79.9 ± 13.62 0 13 112 124 1 +167.53 ± 32.08 ↓
387989 ncm-dbt-05 588686 500 189 69 242 +85.04 ± 13.9 0 13 106 129 2 +178.11 ± 33.1 ↓

Commit

Commit ID b34a690cd4aa6d828ae0f47b427167f4e6392db7
Author rn5f107s2
Date 2024-06-01 17:58:20 UTC
MCP more after a bad singular search The idea is, that if we have the information that the singular search failed low and therefore produced an upperbound score, we can use the score from singularsearch as approximate upperbound as to what bestValue our non ttMoves will produce. If this value is well below alpha, we assume that all non-ttMoves will score below alpha and therfore can skip more moves. This patch also sets up variables for future patches wanting to use teh singular search result outside of singular extensions, in singularBound and singularValue, meaning further patches using this search result to affect various pruning techniques can be tried. Passed STC: https://tests.stockfishchess.org/tests/view/6658d13e6b0e318cefa90120 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 85632 W: 22112 L: 21725 D: 41795 Ptnml(0-2): 243, 10010, 21947, 10349, 267 Passed LTC: https://tests.stockfishchess.org/tests/view/6658dd356b0e318cefa9016a LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 243978 W: 62014 L: 61272 D: 120692 Ptnml(0-2): 128, 26598, 67791, 27348, 124 closes https://github.com/official-stockfish/Stockfish/pull/5325 bench 1397172
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