Dev Builds » 20230525-1849

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 06:57:40 583686 4010 1267 818 1925 +39.07 ± 5.26 1 280 1004 709 11 +77.32 ± 10.73
ncm-dbt-02 06:55:47 585999 4000 1275 809 1916 +40.66 ± 5.12 2 247 1042 701 8 +81.37 ± 10.5
ncm-dbt-03 06:57:37 585087 4002 1267 792 1943 +41.43 ± 5.15 1 251 1031 708 10 +82.42 ± 10.56
ncm-dbt-04 06:55:30 570098 4000 1295 827 1878 +40.84 ± 5.07 1 242 1052 698 7 +81.73 ± 10.44
ncm-dbt-05 06:56:49 577918 3988 1262 776 1950 +42.55 ± 5.16 1 251 1008 729 5 +85.68 ± 10.7
20000 6366 4022 9612 +40.91 ± 2.3 6 1271 5137 3545 41 +81.7 ± 4.73

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
427284 ncm-dbt-03 584874 2 1 0 1 +189.7 ± 55.98 0 0 0 1 0 +1129.65 ± 376.02
427283 ncm-dbt-01 582819 10 5 1 4 +147.05 ± 74.68 0 0 1 4 0 +381.35 ± 516.06
427282 ncm-dbt-05 571070 488 150 91 247 +42.21 ± 14.78 0 32 121 91 0 +85.71 ± 31.01
427281 ncm-dbt-02 585843 500 162 85 253 +53.93 ± 14.46 1 22 128 97 2 +109.07 ± 29.94
427280 ncm-dbt-03 582444 500 168 89 243 +55.36 ± 14.93 0 29 114 106 1 +112.14 ± 32.0
427279 ncm-dbt-04 568792 500 150 87 263 +44.01 ± 14.86 0 33 122 94 1 +88.0 ± 30.9
427278 ncm-dbt-01 583321 500 156 101 243 +38.37 ± 14.26 0 31 134 84 1 +76.25 ± 29.26
427277 ncm-dbt-05 575109 500 162 104 234 +40.48 ± 13.71 0 27 138 85 0 +82.1 ± 28.65
427276 ncm-dbt-02 587537 500 159 96 245 +44.01 ± 14.33 0 29 130 90 1 +88.0 ± 29.77
427275 ncm-dbt-03 586477 500 162 104 234 +40.48 ± 14.78 1 31 128 89 1 +82.1 ± 30.08
427274 ncm-dbt-04 573568 500 157 107 236 +34.86 ± 14.44 0 34 133 82 1 +68.99 ± 29.43
427273 ncm-dbt-01 582819 500 156 107 237 +34.16 ± 14.78 0 37 128 84 1 +67.55 ± 30.12
427272 ncm-dbt-05 582402 500 152 90 258 +43.3 ± 15.7 1 37 112 99 1 +88.0 ± 32.25
427271 ncm-dbt-02 587113 500 165 105 230 +41.89 ± 14.74 0 33 125 91 1 +83.57 ± 30.49
427270 ncm-dbt-04 569310 500 156 113 231 +29.95 ± 15.39 1 42 120 87 0 +61.79 ± 31.17
427269 ncm-dbt-01 582235 500 163 98 239 +45.42 ± 14.68 0 31 124 94 1 +90.97 ± 30.61
427268 ncm-dbt-03 583279 500 152 97 251 +38.37 ± 14.53 0 33 130 86 1 +76.25 ± 29.82
427267 ncm-dbt-05 581444 500 158 95 247 +44.01 ± 14.33 0 28 133 87 2 +86.52 ± 29.35
427266 ncm-dbt-02 585801 500 161 109 230 +36.27 ± 13.72 1 26 143 80 0 +74.79 ± 27.98
427265 ncm-dbt-01 584369 500 157 109 234 +33.46 ± 14.99 0 38 128 82 2 +64.66 ± 30.12
427264 ncm-dbt-04 569869 500 156 95 249 +42.6 ± 13.42 0 23 144 82 1 +85.04 ± 27.73
427263 ncm-dbt-03 586223 500 165 103 232 +43.3 ± 14.82 0 32 126 90 2 +85.04 ± 30.35
427262 ncm-dbt-05 584243 500 160 90 250 +48.96 ± 13.93 0 25 130 95 0 +99.95 ± 29.7
427261 ncm-dbt-02 587325 500 160 112 228 +33.46 ± 13.81 0 31 140 79 0 +67.55 ± 28.46
427260 ncm-dbt-04 571913 500 168 104 228 +44.72 ± 14.1 0 28 130 92 0 +90.97 ± 29.76
427259 ncm-dbt-01 583028 500 174 95 231 +55.36 ± 15.31 0 31 111 106 2 +110.6 ± 32.43
427258 ncm-dbt-03 585211 500 149 103 248 +32.05 ± 13.85 0 32 140 78 0 +64.66 ± 28.48
427257 ncm-dbt-05 575843 500 174 115 211 +41.19 ± 13.76 0 26 140 83 1 +82.1 ± 28.36
427256 ncm-dbt-01 584327 500 153 100 247 +36.97 ± 14.44 1 31 132 86 0 +76.25 ± 29.54
427255 ncm-dbt-04 570268 500 165 104 231 +42.6 ± 14.38 0 29 133 86 2 +83.57 ± 29.37
427254 ncm-dbt-02 585000 500 150 106 244 +30.65 ± 14.16 0 34 139 76 1 +60.36 ± 28.64
427253 ncm-dbt-03 584832 500 171 90 239 +56.78 ± 14.6 0 24 124 99 3 +112.14 ± 30.53
427252 ncm-dbt-05 571873 500 159 95 246 +44.72 ± 15.15 0 35 117 97 1 +89.48 ± 31.58
427251 ncm-dbt-04 568912 500 156 111 233 +31.35 ± 14.07 0 33 140 76 1 +61.79 ± 28.49
427250 ncm-dbt-01 583782 500 150 101 249 +34.16 ± 14.78 0 37 128 84 1 +67.55 ± 30.12
427249 ncm-dbt-02 585928 500 159 84 257 +52.51 ± 15.43 0 33 111 104 2 +104.49 ± 32.42
427248 ncm-dbt-03 585506 500 147 101 252 +32.05 ± 14.12 0 34 136 80 0 +64.66 ± 29.04
427247 ncm-dbt-05 581361 500 147 96 257 +35.56 ± 15.25 0 41 117 92 0 +71.89 ± 31.57
427246 ncm-dbt-04 568156 500 187 106 207 +56.78 ± 13.77 0 20 130 99 1 +115.23 ± 29.58
427245 ncm-dbt-02 583447 500 159 112 229 +32.75 ± 14.95 0 39 126 84 1 +64.66 ± 30.39
427244 ncm-dbt-03 586943 500 152 105 243 +32.75 ± 14.69 0 36 133 79 2 +63.23 ± 29.45
427243 ncm-dbt-01 586477 500 153 106 241 +32.75 ± 15.81 0 44 118 85 3 +61.79 ± 31.43

Commit

Commit ID c701745cf243f4816754167e85bf5fabf5b34e47
Author cj5716
Date 2023-05-25 18:49:11 UTC
Remove ss->ttHit condition where ttValue != VALUE_NONE Simplification is done at 3 separate places in the code. Thanks to peregrineshahin for helping me find 2 of such places. (See original PR #4584) Passed non-regression test LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 120256 W: 32204 L: 32085 D: 55967 Ptnml(0-2): 292, 12473, 34483, 12584, 296 https://tests.stockfishchess.org/tests/view/646f045968661bfd984325e3 closes https://github.com/official-stockfish/Stockfish/pull/4587 No functional change
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