Dev Builds » 20230227-0726

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 06:58:48 582872 4006 1272 831 1903 +38.4 ± 5.13 3 259 1039 698 4 +77.59 ± 10.52
ncm-dbt-02 06:58:52 585702 4000 1244 803 1953 +38.46 ± 5.08 1 255 1051 688 5 +77.16 ± 10.45
ncm-dbt-03 06:58:07 585818 3994 1194 826 1974 +32.1 ± 5.1 4 274 1073 642 4 +64.76 ± 10.33
ncm-dbt-04 06:57:19 568938 4000 1225 839 1936 +33.63 ± 5.04 4 257 1094 639 6 +67.55 ± 10.2
ncm-dbt-05 06:58:00 583685 4000 1218 783 1999 +37.93 ± 5.07 5 245 1062 686 2 +77.34 ± 10.38
20000 6153 4082 9765 +36.11 ± 2.27 17 1290 5319 3353 21 +72.86 ± 4.64

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
411876 ncm-dbt-01 583992 6 2 0 4 +120.22 ± 109.7 0 0 1 2 0 +279.24 ± 576.89 ↓
411875 ncm-dbt-03 585928 494 147 112 235 +24.66 ± 13.86 1 32 145 69 0 +51.0 ± 27.77 ↓
411874 ncm-dbt-02 585506 500 169 101 230 +47.54 ± 13.99 0 24 136 88 2 +93.95 ± 28.85 ↓
411873 ncm-dbt-01 582903 500 152 107 241 +31.35 ± 13.8 0 32 141 77 0 +63.23 ± 28.35 ↓
411872 ncm-dbt-05 583489 500 151 79 270 +50.38 ± 14.0 0 25 128 97 0 +102.97 ± 29.98 ↓
411871 ncm-dbt-04 569869 500 155 114 231 +28.55 ± 14.14 0 34 143 71 2 +54.65 ± 28.11 ↓
411870 ncm-dbt-03 585885 500 151 112 237 +27.16 ± 14.83 2 36 133 79 0 +57.5 ± 29.47 ↓
411869 ncm-dbt-02 587282 500 147 104 249 +29.95 ± 13.56 0 31 145 74 0 +60.36 ± 27.79 ↓
411868 ncm-dbt-05 585211 500 152 92 256 +41.9 ± 15.37 2 33 118 97 0 +88.0 ± 31.44 ↓
411867 ncm-dbt-01 583740 500 159 99 242 +41.89 ± 14.48 0 32 126 92 0 +85.04 ± 30.35 ↓
411866 ncm-dbt-04 567640 500 147 105 248 +29.25 ± 14.84 0 41 126 83 0 +58.93 ± 30.4 ↓
411865 ncm-dbt-03 584790 500 156 110 234 +32.06 ± 14.25 1 32 137 80 0 +66.1 ± 28.89 ↓
411864 ncm-dbt-02 580904 500 146 89 265 +39.78 ± 14.61 0 33 128 88 1 +79.17 ± 30.09 ↓
411863 ncm-dbt-04 569111 500 155 106 239 +34.16 ± 13.85 0 31 139 80 0 +68.99 ± 28.6 ↓
411862 ncm-dbt-01 581319 500 154 115 231 +27.16 ± 14.18 1 34 140 75 0 +56.07 ± 28.52 ↓
411861 ncm-dbt-05 583237 500 150 107 243 +29.95 ± 14.5 1 34 137 77 1 +60.36 ± 28.92 ↓
411860 ncm-dbt-03 586012 500 150 90 260 +41.89 ± 14.48 0 30 132 86 2 +82.1 ± 29.52 ↓
411859 ncm-dbt-02 586901 500 153 108 239 +31.35 ± 14.34 0 35 136 78 1 +61.79 ± 29.05 ↓
411858 ncm-dbt-01 584243 500 162 109 229 +36.97 ± 14.31 0 32 134 83 1 +73.34 ± 29.28 ↓
411857 ncm-dbt-05 584664 500 135 104 261 +21.57 ± 14.03 0 39 141 70 0 +43.3 ± 28.43 ↓
411856 ncm-dbt-04 569350 500 154 109 237 +31.35 ± 13.94 0 33 139 78 0 +63.23 ± 28.63 ↓
411855 ncm-dbt-03 584622 500 149 112 239 +25.76 ± 14.21 0 38 137 75 0 +51.8 ± 28.95 ↓
411854 ncm-dbt-02 585885 500 170 100 230 +48.96 ± 14.2 1 24 129 96 0 +101.46 ± 29.84 ↓
411853 ncm-dbt-01 583028 500 158 95 247 +44.01 ± 15.11 2 29 124 94 1 +90.97 ± 30.61 ↓
411852 ncm-dbt-05 583196 500 150 98 252 +36.26 ± 14.26 0 33 132 85 0 +73.34 ± 29.56 ↓
411851 ncm-dbt-04 567442 500 154 90 256 +44.72 ± 14.51 1 27 130 91 1 +90.97 ± 29.76 ↓
411850 ncm-dbt-03 586985 500 146 92 262 +37.67 ± 15.0 0 37 123 89 1 +74.79 ± 30.78 ↓
411849 ncm-dbt-02 584916 500 154 108 238 +32.05 ± 14.9 0 40 124 86 0 +64.66 ± 30.65 ↓
411848 ncm-dbt-05 580572 500 155 93 252 +43.3 ± 13.74 0 26 136 88 0 +88.0 ± 28.9 ↓
411847 ncm-dbt-01 582987 500 163 96 241 +46.84 ± 15.27 0 34 117 97 2 +92.46 ± 31.58 ↓
411846 ncm-dbt-04 569709 500 150 104 246 +32.05 ± 14.38 0 35 135 79 1 +63.23 ± 29.18 ↓
411845 ncm-dbt-03 587409 500 144 98 258 +32.05 ± 14.52 0 37 130 83 0 +64.66 ± 29.86 ↓
411844 ncm-dbt-02 587325 500 158 96 246 +43.3 ± 14.82 0 33 123 93 1 +86.52 ± 30.76 ↓
411843 ncm-dbt-05 581319 500 167 102 231 +45.42 ± 14.55 0 30 126 93 1 +90.97 ± 30.33 ↓
411842 ncm-dbt-01 582318 500 162 103 235 +41.19 ± 14.7 0 34 123 93 0 +83.57 ± 30.77 ↓
411841 ncm-dbt-04 570268 500 153 110 237 +29.95 ± 13.84 0 32 144 73 1 +58.93 ± 27.95 ↓
411840 ncm-dbt-03 584916 500 151 100 249 +35.56 ± 14.22 0 32 136 81 1 +70.44 ± 29.01 ↓
411839 ncm-dbt-01 581319 500 160 107 233 +36.97 ± 14.17 0 32 133 85 0 +74.79 ± 29.41 ↓
411838 ncm-dbt-02 586901 500 147 97 256 +34.86 ± 14.44 0 35 130 85 0 +70.44 ± 29.84 ↓
411837 ncm-dbt-05 587792 500 158 108 234 +34.86 ± 13.9 2 25 144 79 0 +73.34 ± 27.84 ↓
411836 ncm-dbt-04 568116 500 157 101 242 +39.08 ± 14.57 3 24 138 84 1 +82.1 ± 28.65 ↓

Commit

Commit ID 98dafda6c8d432924821d085fd958c89bc8834c3
Author Alfredo Menezes
Date 2023-02-27 07:26:29 UTC
Simplify condition in step 15 Remove 'ttValue <= alpha' check for negative extension in singular search. Also apply some small code style changes. STC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 127888 W: 33766 L: 33651 D: 60471 Ptnml(0-2): 303, 14082, 35089, 14137, 333 https://tests.stockfishchess.org/tests/view/63f79528e74a12625bcd8c05 LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 89048 W: 23924 L: 23782 D: 41342 Ptnml(0-2): 27, 8635, 27065, 8763, 34 https://tests.stockfishchess.org/tests/view/63f82177e74a12625bcda6f4 LTC (retest): LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 196360 W: 52514 L: 52475 D: 91371 Ptnml(0-2): 103, 19066, 59780, 19151, 80 https://tests.stockfishchess.org/tests/view/63f934bfe74a12625bcdd929 closes https://github.com/official-stockfish/Stockfish/pull/4407 Bench: 5310866
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