Dev Builds » 20230505-0512

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 06:56:32 582199 4000 1275 798 1927 +41.63 ± 5.11 0 247 1038 706 9 +82.83 ± 10.52
ncm-dbt-02 06:55:23 584102 4000 1272 803 1925 +40.93 ± 5.15 3 253 1020 720 4 +82.83 ± 10.63
ncm-dbt-03 06:54:56 586442 4000 1300 770 1930 +46.31 ± 5.0 0 215 1047 731 7 +93.01 ± 10.45
ncm-dbt-04 06:57:04 570150 4000 1247 795 1958 +39.43 ± 5.06 3 239 1069 681 8 +78.99 ± 10.34
ncm-dbt-05 06:57:06 584028 4000 1265 789 1946 +41.54 ± 5.04 2 235 1052 707 4 +83.94 ± 10.43
20000 6359 3955 9686 +41.96 ± 2.27 8 1189 5226 3545 32 +84.31 ± 4.68

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
409072 ncm-dbt-05 581153 500 157 97 246 +41.89 ± 14.61 0 33 124 93 0 +85.04 ± 30.63 ↓
409071 ncm-dbt-04 568792 500 156 101 243 +38.37 ± 14.4 0 31 135 82 2 +74.79 ± 29.13 ↓
409070 ncm-dbt-03 585843 500 161 90 249 +49.67 ± 14.9 0 29 124 94 3 +96.94 ± 30.59 ↓
409069 ncm-dbt-02 580945 500 158 95 247 +44.01 ± 14.06 0 28 131 91 0 +89.48 ± 29.62 ↓
409068 ncm-dbt-01 581943 500 159 100 241 +41.19 ± 14.17 0 29 134 86 1 +82.1 ± 29.23 ↓
409067 ncm-dbt-04 571310 500 168 106 226 +43.3 ± 13.6 0 24 141 84 1 +86.52 ± 28.17 ↓
409066 ncm-dbt-05 585379 500 164 95 241 +48.25 ± 14.16 0 25 133 90 2 +95.44 ± 29.29 ↓
409065 ncm-dbt-02 585928 500 151 97 252 +37.67 ± 15.13 1 36 121 92 0 +77.71 ± 31.04 ↓
409064 ncm-dbt-03 586181 500 166 84 250 +57.5 ± 13.66 0 19 131 99 1 +116.78 ± 29.4 ↓
409063 ncm-dbt-01 582402 500 162 109 229 +36.97 ± 15.7 0 41 118 88 3 +70.44 ± 31.44 ↓
409062 ncm-dbt-04 569629 500 156 101 243 +38.37 ± 14.13 0 31 133 86 0 +77.71 ± 29.4 ↓
409061 ncm-dbt-02 582736 500 175 99 226 +53.22 ± 14.15 0 24 127 98 1 +107.54 ± 30.1 ↓
409060 ncm-dbt-03 584453 500 163 96 241 +46.84 ± 12.95 0 19 145 86 0 +95.44 ± 27.45 ↓
409059 ncm-dbt-05 583992 500 153 112 235 +28.56 ± 14.79 1 38 130 81 0 +58.93 ± 29.87 ↓
409058 ncm-dbt-01 583489 500 162 100 238 +43.3 ± 15.08 0 34 122 92 2 +85.04 ± 30.9 ↓
409057 ncm-dbt-03 588472 500 158 102 240 +39.08 ± 14.17 0 31 132 87 0 +79.17 ± 29.53 ↓
409056 ncm-dbt-04 570068 500 146 99 255 +32.75 ± 14.3 0 34 136 79 1 +64.66 ± 29.04 ↓
409055 ncm-dbt-02 583950 500 156 109 235 +32.76 ± 14.43 0 36 131 83 0 +66.1 ± 29.72 ↓
409054 ncm-dbt-05 585042 500 151 94 255 +39.78 ± 14.22 0 31 131 88 0 +80.63 ± 29.67 ↓
409053 ncm-dbt-01 583028 500 144 102 254 +29.25 ± 14.46 0 37 135 77 1 +57.5 ± 29.2 ↓
409052 ncm-dbt-03 587664 500 170 97 233 +51.09 ± 13.9 0 23 132 94 1 +102.97 ± 29.38 ↓
409051 ncm-dbt-04 569829 500 161 97 242 +44.72 ± 13.97 0 26 135 88 1 +89.48 ± 29.04 ↓
409050 ncm-dbt-02 585421 500 171 90 239 +56.78 ± 14.32 0 24 122 103 1 +115.23 ± 30.81 ↓
409049 ncm-dbt-05 584874 500 150 97 253 +36.97 ± 14.31 1 29 137 82 1 +74.79 ± 28.85 ↓
409048 ncm-dbt-01 575924 500 164 98 238 +46.13 ± 14.32 0 29 126 95 0 +93.95 ± 30.32 ↓
409047 ncm-dbt-03 587197 500 168 106 226 +43.3 ± 14.29 0 30 128 92 0 +88.0 ± 30.06 ↓
409046 ncm-dbt-05 586858 500 162 95 243 +46.84 ± 14.36 0 28 128 93 1 +93.95 ± 30.03 ↓
409045 ncm-dbt-02 585801 500 147 110 243 +25.76 ± 15.6 2 42 124 81 1 +53.22 ± 30.66 ↓
409044 ncm-dbt-04 571230 500 158 87 255 +49.67 ± 14.9 2 26 121 101 0 +104.49 ± 31.0 ↓
409043 ncm-dbt-01 581902 500 156 97 247 +41.19 ± 13.19 0 23 145 82 0 +83.57 ± 27.6 ↓
409042 ncm-dbt-03 586350 500 149 100 251 +34.16 ± 14.91 0 38 126 85 1 +67.55 ± 30.39 ↓
409041 ncm-dbt-05 581610 500 169 97 234 +50.38 ± 13.86 0 24 130 96 0 +102.97 ± 29.68 ↓
409040 ncm-dbt-02 582235 500 163 102 235 +42.6 ± 14.78 0 33 124 92 1 +85.04 ± 30.63 ↓
409039 ncm-dbt-04 568514 500 143 96 261 +32.75 ± 14.03 0 32 140 77 1 +64.66 ± 28.48 ↓
409038 ncm-dbt-01 583405 500 164 105 231 +41.19 ± 13.62 0 24 145 79 2 +80.63 ± 27.63 ↓
409037 ncm-dbt-03 585379 500 165 95 240 +48.96 ± 14.2 0 26 129 94 1 +98.44 ± 29.86 ↓
409036 ncm-dbt-02 585801 500 151 101 248 +34.86 ± 13.76 0 30 140 80 0 +70.44 ± 28.44 ↓
409035 ncm-dbt-04 571833 500 159 108 233 +35.56 ± 15.12 1 35 128 84 2 +70.44 ± 30.11 ↓
409034 ncm-dbt-05 583321 500 159 102 239 +39.78 ± 13.67 0 27 139 84 0 +80.63 ± 28.52 ↓
409033 ncm-dbt-01 585506 500 164 87 249 +53.93 ± 14.86 0 30 113 107 0 +110.6 ± 32.15 ↓

Commit

Commit ID 2429e162890478a48ab9b1cf0c431de9ebaf9429
Author Michael Chaly
Date 2023-05-05 05:12:47 UTC
Reduce more if current node has a lot of refuted moves. This patch refines idea of cutoff count - in master we reduce more if current node has at least 4 moves that are refuted by search, this patch increases this count by 1 if refutation happened without having a tt move. Passed STC: https://tests.stockfishchess.org/tests/view/645363c36206ee34ebf8191d LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 67616 W: 18220 L: 17874 D: 31522 Ptnml(0-2): 142, 7346, 18504, 7656, 160 Passed LTC: https://tests.stockfishchess.org/tests/view/6453a0ea6206ee34ebf82796 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 195228 W: 52741 L: 52140 D: 90347 Ptnml(0-2): 53, 18718, 59482, 19297, 64 closes https://github.com/official-stockfish/Stockfish/pull/4556 bench 3448916
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