Dev Builds » 20231120-1810

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 06:54:21 581333 4000 1401 664 1935 +64.75 ± 5.04 1 165 939 886 9 +132.74 ± 11.08
ncm-dbt-02 06:54:45 586123 4000 1403 656 1941 +65.65 ± 5.08 3 161 932 894 10 +134.95 ± 11.12
ncm-dbt-03 06:55:08 583757 4008 1424 685 1899 +64.8 ± 5.04 1 162 951 877 13 +132.05 ± 11.0
ncm-dbt-04 06:54:00 568960 4000 1414 665 1921 +65.83 ± 4.97 1 152 952 887 8 +135.35 ± 10.98
ncm-dbt-05 06:56:04 580234 3992 1421 655 1916 +67.5 ± 5.1 3 159 913 911 10 +139.1 ± 11.25
20000 7063 3325 9612 +65.71 ± 2.26 9 799 4687 4455 50 +134.83 ± 4.96

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
421657 ncm-dbt-03 583866 8 4 4 0 0.0 ± 8.51 0 0 4 0 0 0.0 ± 7.61
421656 ncm-dbt-05 576414 492 178 79 235 +70.88 ± 14.8 2 16 110 117 1 +149.89 ± 32.52
421655 ncm-dbt-02 587113 500 176 79 245 +68.27 ± 14.54 0 22 110 117 1 +140.62 ± 32.58
421654 ncm-dbt-01 582485 500 175 84 241 +63.94 ± 13.8 0 18 124 107 1 +130.94 ± 30.38
421653 ncm-dbt-04 569071 500 167 79 254 +61.79 ± 13.71 0 19 124 107 0 +127.76 ± 30.41
421652 ncm-dbt-03 585253 500 170 91 239 +55.36 ± 15.19 1 26 119 101 3 +110.6 ± 31.28
421651 ncm-dbt-05 581569 500 185 76 239 +76.97 ± 13.68 0 13 117 118 2 +158.93 ± 31.27
421650 ncm-dbt-02 585337 500 180 80 240 +70.44 ± 14.62 1 17 116 113 3 +143.89 ± 31.59
421649 ncm-dbt-01 579992 500 179 75 246 +73.33 ± 13.57 0 14 119 116 1 +152.18 ± 31.0
421648 ncm-dbt-04 571310 500 188 75 237 +79.9 ± 14.21 0 16 107 125 2 +165.8 ± 33.0
421647 ncm-dbt-03 584958 500 170 77 253 +65.38 ± 14.29 0 20 119 109 2 +132.54 ± 31.18
421646 ncm-dbt-05 576169 500 180 73 247 +75.52 ± 14.37 0 19 106 124 1 +157.24 ± 33.21
421645 ncm-dbt-02 586097 500 164 76 260 +61.79 ± 14.27 0 21 122 105 2 +124.6 ± 30.76
421644 ncm-dbt-04 565823 500 178 78 244 +70.44 ± 14.05 0 19 112 119 0 +147.19 ± 32.24
421643 ncm-dbt-01 581985 500 179 85 236 +66.1 ± 14.17 0 19 120 109 2 +134.15 ± 31.01
421642 ncm-dbt-03 584285 500 190 85 225 +74.06 ± 13.89 0 15 117 116 2 +152.18 ± 31.35
421641 ncm-dbt-05 580323 500 170 75 255 +66.82 ± 14.62 0 24 107 119 0 +138.99 ± 33.06
421640 ncm-dbt-02 585295 500 181 80 239 +71.16 ± 13.19 0 13 123 114 0 +148.85 ± 30.34
421639 ncm-dbt-04 567918 500 175 89 236 +60.36 ± 14.07 0 21 123 105 1 +123.02 ± 30.61
421638 ncm-dbt-01 583531 500 176 88 236 +61.79 ± 14.82 1 22 117 108 2 +126.18 ± 31.53
421637 ncm-dbt-03 584958 500 176 73 251 +72.61 ± 13.99 0 16 117 115 2 +148.85 ± 31.38
421636 ncm-dbt-04 568395 500 173 106 221 +46.84 ± 13.81 0 24 136 89 1 +93.95 ± 28.85
421635 ncm-dbt-02 586139 500 181 81 238 +70.43 ± 14.34 0 20 111 118 1 +145.54 ± 32.41
421634 ncm-dbt-05 581319 500 167 94 239 +51.09 ± 15.36 1 30 116 101 2 +102.97 ± 31.72
421633 ncm-dbt-01 581693 500 167 77 256 +63.23 ± 14.34 0 23 114 113 0 +130.94 ± 31.98
421632 ncm-dbt-03 581860 500 185 90 225 +66.82 ± 14.48 0 22 112 115 1 +137.37 ± 32.27
421631 ncm-dbt-04 569390 500 183 91 226 +64.66 ± 13.39 0 16 126 108 0 +134.15 ± 30.02
421630 ncm-dbt-02 586393 500 182 90 228 +64.66 ± 14.67 0 24 111 114 1 +132.54 ± 32.44
421629 ncm-dbt-05 582360 500 182 87 231 +66.82 ± 13.77 0 16 125 107 2 +135.76 ± 30.17
421628 ncm-dbt-01 578465 500 174 87 239 +61.07 ± 14.65 0 25 114 110 1 +124.6 ± 31.99
421627 ncm-dbt-03 580779 500 179 89 232 +63.23 ± 14.2 0 21 119 109 1 +129.35 ± 31.2
421626 ncm-dbt-04 569949 500 178 69 253 +76.97 ± 14.27 0 17 109 122 2 +158.93 ± 32.69
421625 ncm-dbt-05 581777 500 189 83 228 +74.79 ± 13.76 0 15 115 119 1 +155.54 ± 31.67
421624 ncm-dbt-02 585674 500 170 84 246 +60.36 ± 14.21 0 22 121 106 1 +123.02 ± 30.92
421623 ncm-dbt-03 584790 500 175 86 239 +62.51 ± 14.31 0 22 118 109 1 +127.76 ± 31.37
421622 ncm-dbt-01 580613 500 166 81 253 +59.64 ± 14.86 0 27 112 110 1 +121.46 ± 32.29
421621 ncm-dbt-02 586943 500 169 86 245 +58.21 ± 14.93 2 22 118 107 1 +121.46 ± 31.39
421620 ncm-dbt-03 583070 500 175 90 235 +59.64 ± 13.9 0 20 126 103 1 +121.46 ± 30.15
421619 ncm-dbt-01 581902 500 185 87 228 +68.99 ± 13.86 0 17 119 113 1 +142.26 ± 31.1
421618 ncm-dbt-05 581943 500 170 88 242 +57.5 ± 14.63 0 26 117 106 1 +116.78 ± 31.56
421617 ncm-dbt-04 569829 500 172 78 250 +66.1 ± 14.73 1 20 115 112 2 +135.76 ± 31.8

Commit

Commit ID b4e9ee72e36aadd0e653ac4ab5c07a9e3d639aca
Author FauziAkram
Date 2023-11-20 18:10:38 UTC
Reformat some comments Tests used to derive some Elo worth comments: https://tests.stockfishchess.org/tests/view/653cf6b7cc309ae83956263a https://tests.stockfishchess.org/tests/view/655250b7136acbc573534711 https://tests.stockfishchess.org/tests/view/65525767136acbc5735347b9 https://tests.stockfishchess.org/tests/view/65525aa1136acbc573534801 closes https://github.com/official-stockfish/Stockfish/pull/4879 No functional change
Copyright 2011–2025 Next Chess Move LLC