Dev Builds » 20230405-0623

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 06:58:47 583963 4000 1249 825 1926 +36.97 ± 5.25 3 285 1001 707 4 +74.61 ± 10.75
ncm-dbt-02 06:57:40 587454 4000 1264 789 1947 +41.45 ± 5.08 3 237 1048 706 6 +83.57 ± 10.46
ncm-dbt-03 06:58:00 583720 4004 1261 806 1937 +39.65 ± 5.16 6 249 1037 704 6 +80.37 ± 10.53
ncm-dbt-04 06:56:47 568661 4012 1281 832 1899 +39.05 ± 5.17 3 262 1031 703 7 +78.38 ± 10.57
ncm-dbt-05 06:58:40 578456 3984 1252 873 1859 +33.15 ± 5.18 5 276 1053 651 7 +66.56 ± 10.45
20000 6307 4125 9568 +38.06 ± 2.31 20 1309 5170 3471 30 +76.68 ± 4.72

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
428323 ncm-dbt-03 584411 4 0 0 4 0.0 ± 17.0 0 0 2 0 0 -0.0 ± 15.22 ↓
428322 ncm-dbt-04 566730 12 2 4 6 -58.39 ± 68.56 0 2 4 0 0 -120.33 ± 161.99 ↓
428321 ncm-dbt-05 578136 484 147 112 225 +25.17 ± 14.84 0 40 127 75 0 +50.6 ± 30.22 ↓
428320 ncm-dbt-01 584285 500 160 109 231 +35.56 ± 15.5 0 43 113 94 0 +71.89 ± 32.08 ↓
428319 ncm-dbt-02 585042 500 159 96 245 +44.01 ± 14.73 0 31 127 90 2 +86.52 ± 30.2 ↓
428318 ncm-dbt-03 584790 500 162 113 225 +34.16 ± 14.52 0 35 132 82 1 +67.55 ± 29.58 ↓
428317 ncm-dbt-04 569310 500 159 96 245 +44.01 ± 14.2 0 28 132 89 1 +88.0 ± 29.49 ↓
428316 ncm-dbt-05 573689 500 166 109 225 +39.78 ± 14.61 0 32 131 85 2 +77.71 ± 29.68 ↓
428315 ncm-dbt-01 585548 500 158 108 234 +34.86 ± 14.17 1 29 140 79 1 +70.44 ± 28.44 ↓
428314 ncm-dbt-02 587707 500 163 107 230 +39.08 ± 14.31 2 26 136 86 0 +82.1 ± 28.94 ↓
428313 ncm-dbt-04 570188 500 149 101 250 +33.46 ± 13.94 1 29 141 79 0 +68.99 ± 28.31 ↓
428312 ncm-dbt-03 582485 500 158 108 234 +34.86 ± 14.95 1 36 125 88 0 +71.89 ± 30.51 ↓
428311 ncm-dbt-05 579661 500 161 108 231 +36.97 ± 15.08 1 34 128 85 2 +73.34 ± 30.1 ↓
428310 ncm-dbt-04 569829 500 158 109 233 +34.16 ± 15.53 1 40 119 89 1 +68.99 ± 31.3 ↓
428309 ncm-dbt-02 589283 500 161 95 244 +46.13 ± 14.32 0 27 132 89 2 +90.97 ± 29.47 ↓
428308 ncm-dbt-01 583656 500 153 103 244 +34.86 ± 15.08 0 39 123 87 1 +68.99 ± 30.78 ↓
428307 ncm-dbt-03 580945 500 155 93 252 +43.3 ± 13.46 0 24 140 86 0 +88.0 ± 28.31 ↓
428306 ncm-dbt-05 578136 500 146 106 248 +27.85 ± 15.25 1 40 129 78 2 +54.65 ± 30.01 ↓
428305 ncm-dbt-04 567878 500 164 105 231 +41.19 ± 14.7 0 34 123 93 0 +83.57 ± 30.77 ↓
428304 ncm-dbt-02 586477 500 152 98 250 +37.67 ± 14.35 0 31 136 81 2 +73.34 ± 29.0 ↓
428303 ncm-dbt-01 584117 500 155 101 244 +37.67 ± 15.13 0 39 118 93 0 +76.25 ± 31.44 ↓
428302 ncm-dbt-03 585548 500 162 92 246 +48.96 ± 14.61 0 30 120 100 0 +99.95 ± 31.16 ↓
428301 ncm-dbt-05 581527 500 169 104 227 +45.42 ± 14.68 1 28 127 93 1 +92.46 ± 30.18 ↓
428300 ncm-dbt-04 567918 500 167 93 240 +51.8 ± 14.35 0 27 122 101 0 +106.01 ± 30.85 ↓
428299 ncm-dbt-02 587792 500 149 108 243 +28.56 ± 14.54 1 36 134 79 0 +58.93 ± 29.33 ↓
428298 ncm-dbt-01 583489 500 155 104 241 +35.56 ± 14.61 0 35 130 84 1 +70.44 ± 29.84 ↓
428297 ncm-dbt-03 584664 500 160 100 240 +41.89 ± 14.34 0 29 134 85 2 +82.1 ± 29.23 ↓
428296 ncm-dbt-02 587749 500 163 94 243 +48.25 ± 14.03 0 26 129 95 0 +98.44 ± 29.86 ↓
428295 ncm-dbt-04 569749 500 158 110 232 +33.46 ± 14.99 0 37 131 79 3 +63.23 ± 29.72 ↓
428294 ncm-dbt-05 580075 500 166 101 233 +45.42 ± 13.59 0 24 137 89 0 +92.46 ± 28.72 ↓
428293 ncm-dbt-03 583070 500 151 104 245 +32.76 ± 15.32 1 38 126 83 2 +64.66 ± 30.39 ↓
428292 ncm-dbt-01 585506 500 153 87 260 +46.13 ± 14.32 0 29 126 95 0 +93.95 ± 30.32 ↓
428291 ncm-dbt-04 565037 500 166 122 212 +30.65 ± 14.29 0 35 137 77 1 +60.36 ± 28.92 ↓
428290 ncm-dbt-02 588387 500 166 104 230 +43.3 ± 15.08 0 36 116 98 0 +88.0 ± 31.71 ↓
428289 ncm-dbt-05 581444 500 153 125 222 +19.48 ± 14.39 1 40 139 70 0 +40.48 ± 28.71 ↓
428288 ncm-dbt-03 585253 500 145 98 257 +32.76 ± 15.32 3 34 126 87 0 +70.44 ± 30.38 ↓
428287 ncm-dbt-01 580987 500 152 113 235 +27.16 ± 15.32 1 42 125 81 1 +54.65 ± 30.53 ↓
428286 ncm-dbt-04 571310 500 158 92 250 +46.13 ± 14.98 1 30 122 96 1 +93.95 ± 30.89 ↓
428285 ncm-dbt-02 587197 500 151 87 262 +44.72 ± 13.55 0 24 138 88 0 +90.97 ± 28.58 ↓
428284 ncm-dbt-03 582318 500 168 98 234 +48.96 ± 14.2 1 23 132 93 1 +99.95 ± 29.4 ↓
428283 ncm-dbt-05 574987 500 144 108 248 +25.06 ± 14.55 1 38 135 76 0 +51.8 ± 29.22 ↓
428282 ncm-dbt-01 584117 500 163 100 237 +44.01 ± 14.6 1 29 126 94 0 +90.97 ± 30.33 ↓

Commit

Commit ID 510aca1ef62279dc35941fa45ed61fb9d3796f10
Author Michael Chaly
Date 2023-04-05 06:23:54 UTC
Assign negative stat bonuses for quiet moves at Pv nodes This patch assigns negative stat bonuses for quiet moves at pv nodes which are searched at depth greater than this node assumes, so are extended. Passed STC: https://tests.stockfishchess.org/tests/view/6426198bdb43ab2ba6f9cfa2 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 548944 W: 147287 L: 146254 D: 255403 Ptnml(0-2): 1662, 59772, 150671, 60605, 1762 Passed LTC: https://tests.stockfishchess.org/tests/view/642be4f177ff3301150d892d LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 93352 W: 25400 L: 24994 D: 42958 Ptnml(0-2): 44, 8817, 28547, 9225, 43 closes https://github.com/official-stockfish/Stockfish/pull/4495 bench 5044536
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