Dev Builds » 20231214-1744

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 06:54:16 584567 4000 1391 691 1918 +61.43 ± 5.05 0 179 949 865 7 +125.58 ± 11.02
ncm-dbt-02 06:54:28 586329 4000 1377 647 1976 +64.13 ± 5.07 5 165 928 899 3 +133.34 ± 11.15
ncm-dbt-03 06:54:48 586783 4000 1383 684 1933 +61.34 ± 5.04 4 166 964 859 7 +126.18 ± 10.92
ncm-dbt-04 06:54:00 570022 4000 1381 651 1968 +64.13 ± 5.0 2 158 956 876 8 +131.74 ± 10.96
ncm-dbt-05 06:55:16 583814 4000 1361 642 1997 +63.14 ± 5.09 1 183 915 898 3 +130.35 ± 11.25
20000 6893 3315 9792 +62.83 ± 2.26 12 851 4712 4397 28 +129.43 ± 4.94

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
377951 ncm-dbt-02 587070 500 180 76 244 +73.34 ± 14.3 1 17 109 123 0 +155.54 ± 32.7 ↓
377950 ncm-dbt-05 584958 500 168 76 256 +64.66 ± 14.26 0 22 114 114 0 +134.15 ± 31.97 ↓
377949 ncm-dbt-01 584706 500 165 85 250 +56.07 ± 13.73 0 21 128 101 0 +115.23 ± 29.89 ↓
377948 ncm-dbt-03 588515 500 184 84 232 +70.44 ± 14.62 1 19 110 119 1 +147.19 ± 32.57 ↓
377947 ncm-dbt-04 571471 500 178 76 246 +71.88 ± 14.25 0 20 108 122 0 +150.51 ± 32.89 ↓
377946 ncm-dbt-02 584790 500 178 79 243 +69.71 ± 14.17 1 17 114 118 0 +147.19 ± 31.9 ↓
377945 ncm-dbt-05 580075 500 165 77 258 +61.79 ± 14.14 0 22 118 110 0 +127.76 ± 31.37 ↓
377944 ncm-dbt-01 583698 500 190 89 221 +71.16 ± 15.05 0 24 103 121 2 +145.54 ± 33.69 ↓
377943 ncm-dbt-03 587579 500 175 90 235 +59.64 ± 14.59 1 22 119 107 1 +123.02 ± 31.23 ↓
377942 ncm-dbt-04 570549 500 182 84 234 +68.99 ± 13.11 0 13 126 111 0 +143.89 ± 29.88 ↓
377941 ncm-dbt-02 586943 500 165 82 253 +58.21 ± 14.11 1 20 124 105 0 +121.46 ± 30.47 ↓
377940 ncm-dbt-05 584958 500 162 87 251 +52.51 ± 14.25 0 26 123 101 0 +107.54 ± 30.7 ↓
377939 ncm-dbt-01 584285 500 161 81 258 +56.07 ± 14.43 0 25 121 103 1 +113.68 ± 30.97 ↓
377938 ncm-dbt-04 569470 500 170 88 242 +57.5 ± 14.76 0 25 121 101 3 +113.68 ± 30.97 ↓
377937 ncm-dbt-03 582861 500 173 75 252 +68.99 ± 13.71 0 17 118 115 0 +143.89 ± 31.26 ↓
377936 ncm-dbt-02 587240 500 161 80 259 +56.78 ± 14.05 0 23 123 104 0 +116.78 ± 30.65 ↓
377935 ncm-dbt-04 568792 500 176 82 242 +66.1 ± 13.89 0 18 121 110 1 +135.76 ± 30.83 ↓
377934 ncm-dbt-03 587113 500 180 90 230 +63.23 ± 14.2 0 21 119 109 1 +129.35 ± 31.2 ↓
377933 ncm-dbt-01 587494 500 173 86 241 +61.07 ± 14.65 0 25 114 110 1 +124.6 ± 31.99 ↓
377932 ncm-dbt-05 582235 500 168 83 249 +59.64 ± 13.9 0 21 123 106 0 +123.02 ± 30.61 ↓
377931 ncm-dbt-02 584076 500 172 76 252 +67.55 ± 14.78 0 25 104 121 0 +140.62 ± 33.53 ↓
377930 ncm-dbt-04 571471 500 165 82 253 +58.21 ± 13.97 0 21 126 102 1 +118.33 ± 30.18 ↓
377929 ncm-dbt-01 584411 500 175 82 243 +65.38 ± 14.0 0 20 117 113 0 +135.76 ± 31.48 ↓
377928 ncm-dbt-05 584916 500 169 78 253 +63.94 ± 14.64 0 23 115 110 2 +129.35 ± 31.83 ↓
377927 ncm-dbt-03 585885 500 158 93 249 +45.42 ± 14.28 1 25 133 90 1 +92.46 ± 29.31 ↓
377926 ncm-dbt-01 584706 500 178 87 235 +63.94 ± 13.94 0 19 122 108 1 +130.94 ± 30.71 ↓
377925 ncm-dbt-02 584790 500 179 90 231 +62.51 ± 15.24 2 22 113 111 2 +129.35 ± 32.14 ↓
377924 ncm-dbt-04 568593 500 193 73 234 +85.04 ± 14.2 0 14 105 128 3 +176.33 ± 33.3 ↓
377923 ncm-dbt-05 583196 500 178 82 240 +67.55 ± 14.37 0 22 110 118 0 +140.62 ± 32.58 ↓
377922 ncm-dbt-03 586646 500 183 84 233 +69.71 ± 13.59 0 14 125 109 2 +142.26 ± 30.08 ↓
377921 ncm-dbt-02 585590 500 175 88 237 +61.07 ± 14.1 0 21 122 106 1 +124.6 ± 30.76 ↓
377920 ncm-dbt-01 585506 500 176 87 237 +62.51 ± 14.58 0 23 117 108 2 +126.18 ± 31.53 ↓
377919 ncm-dbt-04 571793 500 150 92 258 +40.49 ± 14.52 1 30 129 90 0 +83.57 ± 29.93 ↓
377918 ncm-dbt-05 583572 500 174 73 253 +71.16 ± 15.18 0 26 98 125 1 +147.19 ± 34.48 ↓
377917 ncm-dbt-03 587494 500 161 77 262 +58.93 ± 14.42 0 25 116 109 0 +121.46 ± 31.7 ↓
377916 ncm-dbt-02 590138 500 167 76 257 +63.95 ± 13.94 0 20 119 111 0 +132.54 ± 31.18 ↓
377915 ncm-dbt-01 581735 500 173 94 233 +55.36 ± 13.84 0 22 127 101 0 +113.68 ± 30.06 ↓
377914 ncm-dbt-04 568037 500 167 74 259 +65.39 ± 14.0 1 17 120 112 0 +137.37 ± 30.98 ↓
377913 ncm-dbt-05 586604 500 177 86 237 +63.95 ± 14.5 1 21 114 114 0 +134.15 ± 31.97 ↓
377912 ncm-dbt-03 588174 500 169 91 240 +54.65 ± 14.49 1 23 124 101 1 +112.14 ± 30.53 ↓

Commit

Commit ID 536d692a3082cc86afcf1a48b0cf25ac73fa7074
Author FauziAkram
Date 2023-12-14 17:44:46 UTC
Remove SlowMover Option The SlowMover option allows users to modify the timeLeft variant, impacting the engine's time management. However, this feature, while theoretically flexible, doesn't offer substantial benefits. Instead, it introduces the risk of non-experienced users altering values without a clear understanding of the effects, potentially leading to a weaker engine. The vast majority of SF users don't use it anyway, and based on tests conducted by fauzi several months ago suggest that changing it would only lose Elo. Examples: https://tests.stockfishchess.org/tests/view/651f309bac57711436726bba https://tests.stockfishchess.org/tests/view/651fea29ac57711436727d85 https://tests.stockfishchess.org/tests/view/65257c343125598fc7eb68a1 https://tests.stockfishchess.org/tests/view/652296c83125598fc7eb2ad7 Tune: https://tests.stockfishchess.org/tests/view/652a70313125598fc7ebd706 (keeping the value at 100, zz2) closes https://github.com/official-stockfish/Stockfish/pull/4917 No functional change
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