Dev Builds » 20240601-1753

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 06:48:53 561971 3998 1497 588 1913 +80.4 ± 5.0 3 120 852 1013 11 +168.72 ± 11.64
ncm-dbt-02 06:47:53 587528 4000 1491 603 1906 +78.44 ± 4.91 1 114 893 980 12 +163.42 ± 11.34
ncm-dbt-03 06:47:50 587208 4000 1499 603 1898 +79.17 ± 4.9 3 108 889 990 10 +166.01 ± 11.36
ncm-dbt-04 06:47:10 571688 4000 1474 605 1921 +76.7 ± 5.0 3 123 889 972 13 +159.57 ± 11.38
ncm-dbt-05 06:49:26 585046 4002 1517 634 1851 +77.94 ± 4.96 1 119 892 974 15 +161.61 ± 11.35
20000 7478 3033 9489 +78.53 ± 2.22 11 584 4415 4929 61 +163.85 ± 5.1

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
387941 ncm-dbt-05 583154 2 1 1 0 0.0 ± 34.02 0 0 1 0 0 0.0 ± 30.47 ↓
387940 ncm-dbt-01 581111 164 64 17 83 +102.44 ± 24.01 0 4 27 51 0 +226.61 ± 67.14 ↓
387939 ncm-dbt-03 586816 500 195 73 232 +86.52 ± 13.16 0 9 111 129 1 +183.51 ± 32.06 ↓
387938 ncm-dbt-02 588472 500 201 67 232 +95.44 ± 13.31 1 5 105 137 2 +206.01 ± 32.92 ↓
387937 ncm-dbt-04 573365 500 178 81 241 +68.27 ± 15.21 1 23 106 118 2 +140.62 ± 33.22 ↓
387936 ncm-dbt-05 586858 500 176 79 245 +68.27 ± 14.94 0 25 104 120 1 +140.62 ± 33.53 ↓
387935 ncm-dbt-01 584706 500 191 69 240 +86.52 ± 14.08 0 14 102 132 2 +181.7 ± 33.83 ↓
387934 ncm-dbt-03 586350 500 192 71 237 +85.78 ± 13.61 0 12 106 131 1 +181.7 ± 33.07 ↓
387933 ncm-dbt-02 588472 500 180 78 242 +71.88 ± 14.25 0 19 111 119 1 +148.85 ± 32.4 ↓
387932 ncm-dbt-04 571190 500 190 66 244 +88.0 ± 14.27 0 15 98 135 2 +185.33 ± 34.57 ↓
387931 ncm-dbt-05 586266 500 192 61 247 +93.2 ± 13.44 0 11 97 142 0 +202.15 ± 34.7 ↓
387930 ncm-dbt-01 585337 500 184 74 242 +77.71 ± 14.99 1 18 104 124 3 +160.64 ± 33.54 ↓
387929 ncm-dbt-03 587113 500 187 75 238 +79.17 ± 13.75 0 13 114 121 2 +164.07 ± 31.75 ↓
387928 ncm-dbt-02 586435 500 170 78 252 +64.66 ± 14.53 0 24 110 116 0 +134.15 ± 32.59 ↓
387927 ncm-dbt-04 570629 500 190 95 215 +66.82 ± 14.62 2 17 116 114 1 +140.62 ± 31.61 ↓
387926 ncm-dbt-05 584076 500 197 91 212 +74.79 ± 14.2 0 16 115 116 3 +152.18 ± 31.7 ↓
387925 ncm-dbt-01 585169 500 179 89 232 +63.23 ± 13.91 0 20 120 110 0 +130.94 ± 31.03 ↓
387924 ncm-dbt-03 588047 500 181 80 239 +71.16 ± 13.34 0 12 127 109 2 +145.54 ± 29.68 ↓
387923 ncm-dbt-02 587494 500 178 80 242 +68.99 ± 13.86 0 17 119 113 1 +142.26 ± 31.1 ↓
387922 ncm-dbt-04 572034 500 188 66 246 +86.52 ± 13.93 0 13 104 131 2 +181.7 ± 33.45 ↓
387921 ncm-dbt-05 586816 500 194 78 228 +82.1 ± 14.98 1 17 100 129 3 +171.02 ± 34.23 ↓
387920 ncm-dbt-01 583656 500 202 90 208 +79.17 ± 13.75 0 14 111 124 1 +165.8 ± 32.28 ↓
387919 ncm-dbt-03 587494 500 181 73 246 +76.25 ± 13.81 0 16 110 124 0 +160.64 ± 32.5 ↓
387918 ncm-dbt-02 587494 500 183 68 249 +81.36 ± 13.19 0 10 116 123 1 +171.02 ± 31.28 ↓
387917 ncm-dbt-04 571672 500 181 74 245 +75.52 ± 13.79 0 14 117 117 2 +155.54 ± 31.31 ↓
387916 ncm-dbt-05 583279 500 190 76 234 +80.63 ± 12.86 0 9 118 123 0 +171.02 ± 30.89 ↓
387915 ncm-dbt-01 580738 500 192 73 235 +84.3 ± 14.33 0 16 101 131 2 +176.33 ± 34.04 ↓
387914 ncm-dbt-03 588260 500 188 71 241 +82.83 ± 13.7 0 14 105 131 0 +176.33 ± 33.3 ↓
387913 ncm-dbt-02 585759 500 198 90 212 +76.25 ± 13.96 0 15 114 119 2 +157.24 ± 31.83 ↓
387912 ncm-dbt-04 570989 500 185 78 237 +75.52 ± 13.79 0 13 120 114 3 +153.86 ± 30.8 ↓
387911 ncm-dbt-05 583196 500 198 85 217 +79.9 ± 13.77 0 12 116 119 3 +164.07 ± 31.39 ↓
387910 ncm-dbt-01 584958 500 188 76 236 +79.17 ± 12.49 0 7 124 119 0 +167.53 ± 29.79 ↓
387909 ncm-dbt-03 587409 500 193 72 235 +85.78 ± 14.22 0 14 104 129 3 +178.11 ± 33.48 ↓
387908 ncm-dbt-04 570709 500 184 63 253 +85.78 ± 13.61 0 12 106 131 1 +181.7 ± 33.07 ↓
387907 ncm-dbt-02 586520 500 187 73 240 +80.63 ± 14.38 0 17 104 127 2 +167.53 ± 33.52 ↓
387906 ncm-dbt-05 584790 500 184 82 234 +71.88 ± 13.81 0 14 123 110 3 +145.54 ± 30.38 ↓
387905 ncm-dbt-01 472550 500 177 60 263 +82.83 ± 15.28 2 16 98 131 3 +174.55 ± 34.58 ↓
387904 ncm-dbt-01 475313 22 8 4 10 +63.87 ± 83.67 0 2 3 6 0 +132.4 ± 216.76 ↓
387903 ncm-dbt-03 586181 500 182 88 230 +66.1 ± 15.13 3 18 112 116 1 +140.62 ± 32.26 ↓
387902 ncm-dbt-04 572921 500 178 82 240 +67.55 ± 13.51 0 16 122 112 0 +140.62 ± 30.61 ↓
387901 ncm-dbt-02 589582 500 194 69 237 +88.74 ± 13.2 0 7 114 126 3 +185.33 ± 31.41 ↓
387900 ncm-dbt-01 586181 312 112 36 164 +86.37 ± 17.53 0 9 62 85 0 +184.96 ± 43.59 ↓
387899 ncm-dbt-05 586985 500 185 81 234 +73.33 ± 13.86 0 15 118 115 2 +150.51 ± 31.19 ↓

Commit

Commit ID de1ae4949daf2c6d36c50e51c132cee808e2ade0
Author FauziAkram
Date 2024-06-01 17:53:13 UTC
Tweak first picked move (ttMove) reduction rule Tweak first picked move (ttMove) reduction rule: Instead of always resetting the reduction to 0, we now only do so if the current reduction is less than 2. If the current reduction is 2 or more, we decrease it by 2 instead. Passed STC: LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 109504 W: 28340 L: 27919 D: 53245 Ptnml(0-2): 305, 12848, 28028, 13263, 308 https://tests.stockfishchess.org/tests/view/6658c2fa6b0e318cefa900c2 Passed LTC: LLR: 2.96 (-2.94,2.94) <0.50,2.50> Total: 130410 W: 33248 L: 32738 D: 64424 Ptnml(0-2): 53, 14139, 36328, 14615, 70 https://tests.stockfishchess.org/tests/view/6658dd8a6b0e318cefa90173 closes https://github.com/official-stockfish/Stockfish/pull/5321 bench: 1224588
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