Dev Builds » 20221123-2025

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 06:56:37 584057 4000 1133 918 1949 +18.69 ± 5.27 4 363 1053 574 6 +37.14 ± 10.47
ncm-dbt-02 06:58:16 586517 3996 1160 890 1946 +23.51 ± 5.11 8 299 1111 575 5 +47.77 ± 10.13
ncm-dbt-03 06:56:20 587283 3998 1145 915 1938 +20.01 ± 5.16 3 340 1085 566 5 +39.8 ± 10.29
ncm-dbt-04 06:57:20 572388 4012 1162 930 1920 +20.11 ± 5.27 8 349 1055 591 3 +41.24 ± 10.46
ncm-dbt-05 06:58:07 583198 3994 1167 922 1905 +21.34 ± 5.21 8 326 1081 577 5 +43.37 ± 10.31
20000 5767 4575 9658 +20.73 ± 2.33 31 1677 5385 2883 24 +41.86 ± 4.62

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
379127 ncm-dbt-04 571873 12 4 4 4 -0.0 ± 117.89 0 2 2 2 0 -0.0 ± 271.37 ↓
379126 ncm-dbt-03 586435 498 149 117 232 +22.35 ± 14.4 0 40 138 70 1 +43.48 ± 28.82 ↓
379125 ncm-dbt-02 585885 496 145 116 235 +20.34 ± 14.17 0 40 139 69 0 +40.81 ± 28.68 ↓
379124 ncm-dbt-05 580821 494 155 112 227 +30.32 ± 14.41 1 33 135 78 0 +62.56 ± 29.13 ↓
379123 ncm-dbt-01 586604 500 154 116 230 +26.45 ± 14.78 0 40 134 74 2 +50.38 ± 29.35 ↓
379122 ncm-dbt-04 572477 500 148 129 223 +13.21 ± 14.8 1 47 134 68 0 +27.85 ± 29.39 ↓
379121 ncm-dbt-03 587452 500 145 112 243 +22.96 ± 13.73 0 36 145 69 0 +46.13 ± 27.87 ↓
379120 ncm-dbt-02 586393 500 146 112 242 +23.66 ± 14.45 1 38 137 74 0 +48.96 ± 28.96 ↓
379119 ncm-dbt-05 581610 500 136 109 255 +18.78 ± 14.6 1 42 136 71 0 +39.08 ± 29.11 ↓
379118 ncm-dbt-01 584958 500 141 119 240 +15.3 ± 15.45 2 48 126 74 0 +33.46 ± 30.41 ↓
379117 ncm-dbt-04 573446 500 153 126 221 +18.78 ± 15.47 2 46 125 77 0 +40.48 ± 30.53 ↓
379116 ncm-dbt-03 587240 500 147 110 243 +25.76 ± 14.86 0 42 130 77 1 +50.38 ± 29.88 ↓
379115 ncm-dbt-05 585042 500 146 125 229 +14.6 ± 15.28 1 50 126 73 0 +30.65 ± 30.41 ↓
379114 ncm-dbt-02 588260 500 144 115 241 +20.17 ± 14.45 2 36 144 67 1 +41.89 ± 28.03 ↓
379113 ncm-dbt-04 572558 500 153 112 235 +28.55 ± 15.54 2 40 124 83 1 +58.93 ± 30.66 ↓
379112 ncm-dbt-01 582485 500 135 123 242 +8.34 ± 15.15 1 53 129 67 0 +18.08 ± 30.03 ↓
379111 ncm-dbt-03 586774 500 144 117 239 +18.78 ± 14.98 1 45 130 74 0 +39.08 ± 29.9 ↓
379110 ncm-dbt-02 584622 500 153 108 239 +31.35 ± 14.85 2 32 137 77 2 +63.23 ± 28.9 ↓
379109 ncm-dbt-05 580406 500 151 116 233 +24.36 ± 13.97 0 35 147 66 2 +46.13 ± 27.59 ↓
379108 ncm-dbt-04 569190 500 144 117 239 +18.78 ± 14.47 0 44 135 71 0 +37.67 ± 29.25 ↓
379107 ncm-dbt-01 584411 500 141 118 241 +15.99 ± 14.51 0 46 135 69 0 +32.05 ± 29.26 ↓
379106 ncm-dbt-02 585632 500 137 116 247 +14.6 ± 14.53 1 43 141 64 1 +29.25 ± 28.47 ↓
379105 ncm-dbt-03 586774 500 145 116 239 +20.17 ± 14.83 1 42 135 71 1 +40.48 ± 29.24 ↓
379104 ncm-dbt-05 581028 500 136 123 241 +9.04 ± 15.45 1 53 130 64 2 +16.69 ± 29.91 ↓
379103 ncm-dbt-04 571110 500 137 109 254 +19.48 ± 15.4 1 46 129 72 2 +37.67 ± 30.03 ↓
379102 ncm-dbt-01 582318 500 138 111 251 +18.78 ± 14.73 1 42 137 69 1 +37.67 ± 28.99 ↓
379101 ncm-dbt-03 589027 500 137 104 259 +22.96 ± 14.91 1 41 133 74 1 +46.13 ± 29.5 ↓
379100 ncm-dbt-02 584916 500 150 102 248 +33.46 ± 14.21 2 28 140 80 0 +70.44 ± 28.44 ↓
379099 ncm-dbt-05 585421 500 145 109 246 +25.06 ± 14.29 1 36 139 74 0 +51.8 ± 28.68 ↓
379098 ncm-dbt-04 571632 500 140 118 242 +15.3 ± 14.58 1 44 137 68 0 +32.05 ± 29.0 ↓
379097 ncm-dbt-01 584916 500 150 108 242 +29.25 ± 15.09 0 42 125 82 1 +57.5 ± 30.53 ↓
379096 ncm-dbt-03 586393 500 141 123 236 +12.51 ± 13.96 0 44 144 62 0 +25.06 ± 28.08 ↓
379095 ncm-dbt-02 588132 500 144 113 243 +21.57 ± 14.55 0 43 133 74 0 +43.3 ± 29.5 ↓
379094 ncm-dbt-05 582277 500 152 122 226 +20.87 ± 15.74 2 47 120 81 0 +44.72 ± 31.16 ↓
379093 ncm-dbt-01 582903 500 132 115 253 +11.82 ± 15.31 0 55 123 72 0 +23.66 ± 30.78 ↓
379092 ncm-dbt-04 573244 500 134 103 263 +21.57 ± 14.68 0 44 131 75 0 +43.3 ± 29.76 ↓
379091 ncm-dbt-03 588174 500 137 116 247 +14.6 ± 15.03 0 50 130 69 1 +27.85 ± 29.9 ↓
379090 ncm-dbt-02 588302 500 141 108 251 +22.96 ± 14.27 0 39 140 70 1 +44.72 ± 28.57 ↓
379089 ncm-dbt-04 575965 500 149 112 239 +25.76 ± 14.34 1 36 138 75 0 +53.22 ± 28.81 ↓
379088 ncm-dbt-05 588984 500 146 106 248 +27.85 ± 13.82 1 30 148 70 1 +56.07 ± 27.39 ↓
379087 ncm-dbt-01 583866 500 142 108 250 +23.66 ± 14.19 0 37 144 67 2 +44.72 ± 28.02 ↓

Commit

Commit ID 85ae65db1dd315ea500f30226781c4c471d30c5d
Author VoyagerOne
Date 2022-11-23 20:25:14 UTC
Skip full depth search in LMR depending on depth dynamically adjust newDepth, and skip full depth search if newDepth doesn't exceed the previous search depth. This affects the used newDepth for future searches, and influences the stat bonus for the move. Passed STC: https://tests.stockfishchess.org/tests/view/63795500aa34433735bc1cfe LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 112776 W: 30082 L: 29663 D: 53031 Ptnml(0-2): 352, 12453, 30423, 12744, 416 Passed LTC: https://tests.stockfishchess.org/tests/view/6379ea39aa34433735bc2f9b LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 83576 W: 22559 L: 22169 D: 38848 Ptnml(0-2): 38, 8011, 25303, 8395, 41 closes https://github.com/official-stockfish/Stockfish/pull/4240 Bench: 4390318
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