Dev Builds » 20211017-1029

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 06:51:51 583089 4000 744 1314 1942 -49.85 ± 5.13 9 773 999 217 2 -100.52 ± 10.74
ncm-dbt-02 06:53:50 585268 3996 712 1343 1941 -55.33 ± 5.08 14 794 1000 189 1 -111.1 ± 10.71
ncm-dbt-03 06:53:00 583947 4014 723 1323 1968 -52.33 ± 5.18 10 803 974 217 3 -105.81 ± 10.89
ncm-dbt-04 06:52:34 567409 3996 694 1275 2027 -50.88 ± 5.19 8 793 971 224 2 -102.89 ± 10.91
ncm-dbt-05 06:53:30 581242 3994 725 1306 1963 -50.9 ± 5.17 9 787 978 222 1 -102.57 ± 10.87
20000 3598 6561 9841 -51.85 ± 2.3 50 3950 4922 1069 9 -104.57 ± 4.84

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
436048 ncm-dbt-03 577315 14 3 5 6 -49.93 ± 60.15 0 2 5 0 0 -102.04 ± 134.61
436047 ncm-dbt-04 565863 496 89 165 242 -53.66 ± 14.4 1 99 123 25 0 -108.46 ± 30.67
436046 ncm-dbt-05 583992 494 84 164 246 -56.76 ± 14.17 1 100 124 22 0 -115.16 ± 30.46
436045 ncm-dbt-02 585801 496 84 171 241 -61.58 ± 14.07 0 108 119 21 0 -127.29 ± 31.19
436044 ncm-dbt-01 583112 500 93 159 248 -46.13 ± 14.58 2 91 128 29 0 -90.97 ± 30.05
436043 ncm-dbt-03 587028 500 97 170 233 -51.09 ± 15.11 2 100 117 31 0 -101.46 ± 31.58
436042 ncm-dbt-04 568752 500 82 161 257 -55.36 ± 15.57 2 108 107 33 0 -110.6 ± 32.99
436041 ncm-dbt-05 578753 500 94 160 246 -46.13 ± 14.85 0 98 121 30 1 -95.44 ± 31.02
436040 ncm-dbt-02 587070 500 95 160 245 -45.42 ± 13.45 0 88 139 23 0 -92.46 ± 28.41
436039 ncm-dbt-01 583614 500 93 171 236 -54.64 ± 13.94 1 98 129 22 0 -110.6 ± 29.78
436038 ncm-dbt-03 585421 500 89 169 242 -56.07 ± 14.96 0 110 110 30 0 -115.23 ± 32.58
436037 ncm-dbt-04 566454 500 83 155 262 -50.38 ± 15.33 2 101 114 33 0 -99.95 ± 32.0
436036 ncm-dbt-05 579744 500 93 163 244 -48.96 ± 14.74 0 101 118 31 0 -99.95 ± 31.44
436035 ncm-dbt-01 581569 500 99 179 222 -56.07 ± 13.87 1 99 129 21 0 -113.68 ± 29.75
436034 ncm-dbt-02 586562 500 76 169 255 -65.38 ± 14.0 2 107 123 18 0 -132.54 ± 30.53
436033 ncm-dbt-03 586731 500 87 169 244 -57.5 ± 13.8 0 103 126 21 0 -118.33 ± 30.18
436032 ncm-dbt-04 567601 500 90 160 250 -48.96 ± 14.34 1 94 130 24 1 -99.95 ± 29.7
436031 ncm-dbt-05 583112 500 97 172 231 -52.51 ± 14.11 0 100 125 25 0 -107.54 ± 30.4
436030 ncm-dbt-01 582318 500 85 172 243 -61.07 ± 15.44 3 110 108 29 0 -121.46 ± 32.88
436029 ncm-dbt-02 586435 500 100 164 236 -44.72 ± 14.1 1 89 133 27 0 -89.48 ± 29.33
436028 ncm-dbt-03 580738 500 73 168 259 -66.82 ± 14.2 4 104 125 17 0 -132.54 ± 30.2
436027 ncm-dbt-04 568872 500 89 166 245 -53.93 ± 14.86 1 104 116 29 0 -109.07 ± 31.72
436026 ncm-dbt-05 582110 500 83 157 260 -51.8 ± 14.62 2 97 124 27 0 -102.97 ± 30.57
436025 ncm-dbt-01 581236 500 88 157 255 -48.26 ± 13.75 0 92 136 21 1 -99.95 ± 28.8
436024 ncm-dbt-02 584790 500 99 171 230 -50.38 ± 14.28 1 96 127 26 0 -101.46 ± 30.14
436023 ncm-dbt-03 584874 500 89 155 256 -46.13 ± 15.36 2 97 116 35 0 -90.97 ± 31.72
436022 ncm-dbt-04 566533 500 88 152 260 -44.72 ± 13.83 0 90 134 26 0 -90.97 ± 29.17
436021 ncm-dbt-01 582277 500 97 163 240 -46.13 ± 14.98 2 93 125 29 1 -92.46 ± 30.47
436020 ncm-dbt-05 582527 500 82 160 258 -54.64 ± 14.89 2 102 118 28 0 -109.07 ± 31.43
436019 ncm-dbt-02 582945 500 83 166 251 -58.21 ± 14.93 3 103 118 26 0 -115.23 ± 31.41
436018 ncm-dbt-03 583866 500 80 159 261 -55.36 ± 14.26 0 103 124 22 1 -115.23 ± 30.51
436017 ncm-dbt-04 566888 500 93 162 245 -48.25 ± 14.96 1 98 121 29 1 -98.44 ± 31.02
436016 ncm-dbt-01 585379 500 90 158 252 -47.55 ± 14.79 0 100 118 32 0 -96.94 ± 31.44
436015 ncm-dbt-05 578259 500 96 175 229 -55.36 ± 15.44 4 101 115 30 0 -107.54 ± 31.86
436014 ncm-dbt-02 582193 500 92 171 237 -55.36 ± 15.44 4 100 118 27 1 -109.07 ± 31.43
436013 ncm-dbt-03 586943 500 101 162 237 -42.6 ± 14.25 1 87 135 26 1 -86.52 ± 29.06
436012 ncm-dbt-04 568315 500 80 154 266 -51.8 ± 14.08 0 99 126 25 0 -106.01 ± 30.26
436011 ncm-dbt-05 581444 500 96 155 249 -41.19 ± 14.03 0 88 133 29 0 -83.57 ± 29.37
436010 ncm-dbt-01 585211 500 99 155 246 -39.08 ± 14.57 0 90 126 34 0 -79.17 ± 30.36
436009 ncm-dbt-03 582611 500 104 166 230 -43.3 ± 15.45 1 97 116 35 1 -88.0 ± 31.71
436008 ncm-dbt-02 586350 500 83 171 246 -61.79 ± 14.41 3 103 123 21 0 -123.02 ± 30.61

Commit

Commit ID 6847be2c752b3f41906be87af7f3cde4e31be5d5
Author Stéphane Nicolet
Date 2021-10-17 10:29:11 UTC
Allow some LMR double extensions Allow some LMR double extensions for the second and third sons of each node. STC: LLR: 2.94 (-2.94,2.94) <-0.50,2.50> Total: 170320 W: 42608 L: 42187 D: 85525 Ptnml(0-2): 516, 19635, 44422, 20086, 501 https://tests.stockfishchess.org/tests/view/616a9e3899b580bf37797cf4 LTC: LLR: 2.93 (-2.94,2.94) <0.50,3.50> Total: 74400 W: 18783 L: 18423 D: 37194 Ptnml(0-2): 46, 7812, 21129, 8162, 51 https://tests.stockfishchess.org/tests/view/616b378499b580bf37797d61 closes https://github.com/official-stockfish/Stockfish/pull/3742 Bench: 4877152
Copyright 2011–2025 Next Chess Move LLC