Dev Builds » 20230227-0728

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 06:57:44 582804 4012 1234 837 1941 +34.49 ± 5.09 4 264 1075 657 6 +69.32 ± 10.32
ncm-dbt-02 06:58:04 586352 3994 1238 760 1996 +41.78 ± 5.11 3 241 1032 717 4 +84.62 ± 10.55
ncm-dbt-03 06:56:57 584521 4000 1190 870 1940 +27.85 ± 5.1 3 298 1076 622 1 +56.43 ± 10.33
ncm-dbt-04 06:56:21 569321 3994 1212 819 1963 +34.3 ± 5.07 4 260 1076 653 4 +69.28 ± 10.31
ncm-dbt-05 06:56:30 578892 4000 1258 804 1938 +39.6 ± 5.07 3 240 1064 686 7 +79.53 ± 10.37
20000 6132 4090 9778 +35.6 ± 2.28 17 1303 5323 3335 22 +71.78 ± 4.64

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
429915 ncm-dbt-01 583237 12 5 2 5 +88.66 ± 75.75 0 0 3 3 0 +190.73 ± 238.47 ↓
429914 ncm-dbt-04 567244 494 155 112 227 +30.32 ± 14.81 0 38 129 79 1 +59.66 ± 29.97 ↓
429913 ncm-dbt-02 586985 494 144 97 253 +33.16 ± 15.0 2 32 131 81 1 +68.39 ± 29.67 ↓
429912 ncm-dbt-03 584832 500 155 104 241 +35.56 ± 15.0 0 38 124 87 1 +70.44 ± 30.65 ↓
429911 ncm-dbt-05 572719 500 162 108 230 +37.67 ± 13.53 0 27 142 81 0 +76.25 ± 28.11 ↓
429910 ncm-dbt-01 585042 500 152 107 241 +31.35 ± 13.66 0 31 143 76 0 +63.23 ± 28.06 ↓
429909 ncm-dbt-04 569310 500 135 93 272 +29.25 ± 13.92 0 34 140 76 0 +58.93 ± 28.51 ↓
429908 ncm-dbt-02 588047 500 155 85 260 +48.96 ± 14.61 0 30 120 100 0 +99.95 ± 31.16 ↓
429907 ncm-dbt-03 585211 500 156 109 235 +32.76 ± 13.76 1 28 144 77 0 +67.55 ± 27.89 ↓
429906 ncm-dbt-05 579785 500 147 102 251 +31.35 ± 14.34 0 34 139 75 2 +60.36 ± 28.64 ↓
429905 ncm-dbt-01 579992 500 153 106 241 +32.75 ± 14.43 0 35 134 80 1 +64.66 ± 29.31 ↓
429904 ncm-dbt-04 569709 500 161 110 229 +35.56 ± 13.67 1 26 144 79 0 +73.34 ± 27.84 ↓
429903 ncm-dbt-02 585590 500 146 100 254 +32.05 ± 13.71 0 30 145 74 1 +63.23 ± 27.78 ↓
429902 ncm-dbt-03 582861 500 153 108 239 +31.35 ± 14.47 0 37 131 82 0 +63.23 ± 29.72 ↓
429901 ncm-dbt-05 582611 500 157 96 247 +42.6 ± 14.11 1 26 134 89 0 +88.0 ± 29.2 ↓
429900 ncm-dbt-01 581070 500 152 101 247 +35.56 ± 15.12 2 33 128 86 1 +73.34 ± 30.1 ↓
429899 ncm-dbt-04 570549 500 161 105 234 +39.08 ± 15.58 0 41 113 95 1 +77.71 ± 32.09 ↓
429898 ncm-dbt-02 584159 500 166 87 247 +55.36 ± 14.12 0 24 123 103 0 +113.68 ± 30.67 ↓
429897 ncm-dbt-03 585295 500 152 107 241 +31.35 ± 14.47 0 37 131 82 0 +63.23 ± 29.72 ↓
429896 ncm-dbt-05 583782 500 159 92 249 +46.84 ± 14.49 0 29 126 94 1 +93.95 ± 30.32 ↓
429895 ncm-dbt-01 582360 500 157 111 232 +32.05 ± 14.38 0 35 135 79 1 +63.23 ± 29.18 ↓
429894 ncm-dbt-04 569430 500 157 113 230 +30.65 ± 14.81 1 36 132 80 1 +61.79 ± 29.59 ↓
429893 ncm-dbt-02 587409 500 158 95 247 +44.01 ± 14.47 0 30 128 91 1 +88.0 ± 30.06 ↓
429892 ncm-dbt-03 580987 500 147 108 245 +27.16 ± 14.7 1 38 132 79 0 +56.07 ± 29.61 ↓
429891 ncm-dbt-05 580613 500 170 99 231 +49.67 ± 13.97 0 24 132 93 1 +99.95 ± 29.4 ↓
429890 ncm-dbt-01 583866 500 164 105 231 +41.19 ± 14.3 1 26 138 83 2 +82.1 ± 28.65 ↓
429889 ncm-dbt-02 585717 500 163 106 231 +39.78 ± 13.94 0 29 135 86 0 +80.63 ± 29.1 ↓
429888 ncm-dbt-04 569789 500 150 91 259 +41.19 ± 14.83 1 32 124 93 0 +85.04 ± 30.63 ↓
429887 ncm-dbt-03 584958 500 152 118 230 +23.66 ± 14.71 0 43 130 77 0 +47.55 ± 29.89 ↓
429886 ncm-dbt-05 574865 500 147 107 246 +27.85 ± 15.25 1 40 129 78 2 +54.65 ± 30.01 ↓
429885 ncm-dbt-01 582945 500 150 96 254 +37.67 ± 15.13 1 35 124 89 1 +76.25 ± 30.64 ↓
429884 ncm-dbt-04 568554 500 145 85 270 +41.89 ± 13.8 1 23 142 83 1 +85.04 ± 28.03 ↓
429883 ncm-dbt-02 587155 500 154 98 248 +39.08 ± 14.7 0 34 127 88 1 +77.71 ± 30.23 ↓
429882 ncm-dbt-03 585674 500 134 104 262 +20.87 ± 14.37 1 39 139 71 0 +43.3 ± 28.7 ↓
429881 ncm-dbt-05 578013 500 160 109 231 +35.56 ± 14.74 1 33 131 84 1 +71.89 ± 29.7 ↓
429880 ncm-dbt-01 583489 500 153 99 248 +37.67 ± 14.08 0 31 134 85 0 +76.25 ± 29.26 ↓
429879 ncm-dbt-04 569989 500 148 110 242 +26.46 ± 13.16 0 30 152 68 0 +53.22 ± 26.83 ↓
429878 ncm-dbt-02 585759 500 152 92 256 +41.9 ± 14.87 1 32 123 94 0 +86.52 ± 30.76 ↓
429877 ncm-dbt-03 586350 500 141 112 247 +20.17 ± 13.78 0 38 145 67 0 +40.48 ± 27.9 ↓
429876 ncm-dbt-05 578753 500 156 91 253 +45.42 ± 14.01 0 27 131 92 0 +92.46 ± 29.6 ↓
429875 ncm-dbt-01 583237 500 148 110 242 +26.46 ± 14.26 0 38 136 76 0 +53.22 ± 29.08 ↓

Commit

Commit ID ff5a6f8df196d61a0d9b1ebe54d84eeb9af20079
Author Stefan Geschwentner
Date 2023-02-27 07:28:45 UTC
NNUE accumulator update in probcut. Call the recently added hint function for NNUE accumulator update after a failed probcut search. In this case we already searched at least some captures and tt move which, however, is not sufficient for a cutoff. So it seems we have a greater chance that the full search will also have no cutoff and hence all moves have to be searched. STC: https://tests.stockfishchess.org/tests/view/63fa74a4e74a12625bce1823 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 70096 W: 18770 L: 18423 D: 32903 Ptnml(0-2): 191, 7342, 19654, 7651, 210 To be sure that we have no heavy interaction retest on top of #4410. Rebased STC: https://tests.stockfishchess.org/tests/view/63fb2f62e74a12625bce3b03 LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 137688 W: 36790 L: 36349 D: 64549 Ptnml(0-2): 397, 14373, 38919, 14702, 453 closes https://github.com/official-stockfish/Stockfish/pull/4411 No functional change
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