Dev Builds » 20230903-0710

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 06:56:03 583036 4016 1394 717 1905 +59.13 ± 5.06 3 179 972 846 8 +120.93 ± 10.88
ncm-dbt-02 06:55:45 585717 3988 1385 729 1874 +57.67 ± 5.04 3 171 999 809 12 +116.96 ± 10.7
ncm-dbt-03 06:55:21 582904 4000 1350 639 2011 +62.42 ± 5.1 0 184 928 881 7 +127.76 ± 11.16
ncm-dbt-04 06:55:58 568556 4016 1390 719 1907 +58.6 ± 4.92 1 163 1017 818 9 +119.18 ± 10.58
ncm-dbt-05 06:54:53 578842 3980 1345 676 1959 +58.96 ± 5.04 1 179 965 840 5 +120.74 ± 10.92
20000 6864 3480 9656 +59.36 ± 2.25 8 876 4881 4194 41 +121.1 ± 4.85

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
423220 ncm-dbt-04 566849 16 8 5 3 +65.88 ± 61.23 0 0 5 3 0 +136.9 ± 147.45 ↓
423219 ncm-dbt-01 583112 16 5 4 7 +21.74 ± 96.86 0 2 3 3 0 +43.66 ± 216.48 ↓
423218 ncm-dbt-05 576169 480 162 87 231 +54.73 ± 14.37 0 22 122 95 1 +110.73 ± 30.69 ↓
423217 ncm-dbt-02 584790 488 182 88 218 +67.77 ± 14.92 1 19 111 111 2 +139.46 ± 32.38 ↓
423216 ncm-dbt-03 581735 500 173 79 248 +66.1 ± 14.17 0 17 126 103 4 +130.94 ± 30.05 ↓
423215 ncm-dbt-01 580696 500 167 90 243 +53.93 ± 14.59 0 27 120 102 1 +109.07 ± 31.14 ↓
423214 ncm-dbt-04 567403 500 165 100 235 +45.42 ± 14.01 0 27 131 92 0 +92.46 ± 29.6 ↓
423213 ncm-dbt-05 575843 500 186 79 235 +75.52 ± 13.49 0 13 118 118 1 +157.24 ± 31.11 ↓
423212 ncm-dbt-02 583740 500 170 90 240 +56.07 ± 14.7 1 24 120 104 1 +115.23 ± 31.11 ↓
423211 ncm-dbt-03 584664 500 151 83 266 +47.54 ± 15.18 0 34 115 100 1 +95.44 ± 31.86 ↓
423210 ncm-dbt-01 583908 500 177 83 240 +66.1 ± 14.03 0 19 119 111 1 +135.76 ± 31.16 ↓
423209 ncm-dbt-04 566612 500 191 91 218 +70.43 ± 13.47 0 12 129 106 3 +142.26 ± 29.38 ↓
423208 ncm-dbt-05 575435 500 168 89 243 +55.36 ± 14.66 0 27 118 104 1 +112.14 ± 31.42 ↓
423207 ncm-dbt-02 588217 500 158 93 249 +45.42 ± 14.01 0 27 131 92 0 +92.46 ± 29.6 ↓
423206 ncm-dbt-03 583279 500 176 88 236 +61.79 ± 14.27 0 22 119 108 1 +126.18 ± 31.22 ↓
423205 ncm-dbt-04 568156 500 176 82 242 +66.1 ± 14.17 0 18 123 106 3 +132.54 ± 30.53 ↓
423204 ncm-dbt-01 583740 500 161 86 253 +52.51 ± 14.39 0 26 124 99 1 +106.01 ± 30.56 ↓
423203 ncm-dbt-05 578465 500 181 86 233 +66.82 ± 13.92 0 17 123 108 2 +135.76 ± 30.5 ↓
423202 ncm-dbt-02 585632 500 172 82 246 +63.23 ± 13.33 0 15 131 103 1 +129.35 ± 29.24 ↓
423201 ncm-dbt-03 582569 500 166 83 251 +58.21 ± 14.25 0 23 122 104 1 +118.33 ± 30.8 ↓
423200 ncm-dbt-04 569829 500 176 92 232 +58.93 ± 14.56 0 26 114 110 0 +121.46 ± 32.0 ↓
423199 ncm-dbt-01 584453 500 172 95 233 +53.93 ± 14.19 1 21 129 98 1 +110.6 ± 29.78 ↓
423198 ncm-dbt-05 581028 500 153 96 251 +39.78 ± 13.94 1 26 138 85 0 +82.1 ± 28.65 ↓
423197 ncm-dbt-02 591297 500 177 93 230 +58.93 ± 13.72 0 20 126 104 0 +121.46 ± 30.15 ↓
423196 ncm-dbt-03 582277 500 175 71 254 +73.34 ± 14.15 0 19 108 123 0 +153.86 ± 32.88 ↓
423195 ncm-dbt-04 568395 500 178 90 232 +61.79 ± 13.71 0 16 133 98 3 +123.02 ± 29.0 ↓
423194 ncm-dbt-01 582318 500 166 83 251 +58.21 ± 14.39 0 24 120 105 1 +118.33 ± 31.1 ↓
423193 ncm-dbt-05 579909 500 176 83 241 +65.38 ± 13.86 0 19 119 112 0 +135.76 ± 31.16 ↓
423192 ncm-dbt-02 585211 500 176 96 228 +56.07 ± 13.87 0 19 135 93 3 +110.6 ± 28.84 ↓
423191 ncm-dbt-03 584369 500 181 75 244 +74.79 ± 14.06 0 18 108 124 0 +157.24 ± 32.87 ↓
423190 ncm-dbt-04 569470 500 159 79 262 +56.07 ± 13.87 0 22 126 102 0 +115.23 ± 30.2 ↓
423189 ncm-dbt-01 583950 500 174 91 235 +58.21 ± 15.7 2 28 106 113 1 +121.46 ± 33.17 ↓
423188 ncm-dbt-05 581485 500 161 64 275 +68.27 ± 14.4 0 22 109 119 0 +142.26 ± 32.74 ↓
423187 ncm-dbt-02 583405 500 173 94 233 +55.36 ± 14.39 1 21 128 98 2 +112.14 ± 29.92 ↓
423186 ncm-dbt-03 581818 500 165 77 258 +61.79 ± 14.27 0 23 116 111 0 +127.76 ± 31.68 ↓
423185 ncm-dbt-04 569749 500 168 74 258 +66.1 ± 13.74 0 18 120 112 0 +137.37 ± 30.98 ↓
423184 ncm-dbt-01 580323 500 184 91 225 +65.38 ± 13.72 0 18 121 111 0 +135.76 ± 30.83 ↓
423183 ncm-dbt-05 582402 500 158 92 250 +46.13 ± 14.85 0 33 118 99 0 +93.95 ± 31.44 ↓
423182 ncm-dbt-02 583447 500 177 93 230 +58.93 ± 14.96 0 26 117 104 3 +116.78 ± 31.56 ↓
423181 ncm-dbt-03 582527 500 163 83 254 +56.07 ± 14.7 0 28 114 108 0 +115.23 ± 32.0 ↓
423180 ncm-dbt-04 570549 500 169 106 225 +44.01 ± 13.92 1 24 136 89 0 +90.97 ± 28.88 ↓
423179 ncm-dbt-01 584832 500 188 94 218 +66.1 ± 13.45 0 14 130 104 2 +134.15 ± 29.34 ↓

Commit

Commit ID adf29b3fd69cdca035d1aa6675e01acafbf4d07f
Author FauziAkram
Date 2023-09-03 07:10:27 UTC
Rename one variable To enhance code clarity and prevent potential confusion with the 'r' variable assigned to reduction later in the code, this pull request renames it to 'reductionScale' when we use the same name in the reduction() function. Using distinct variable names for separate functions improves code readability and maintainability. closes https://github.com/official-stockfish/Stockfish/pull/4765 No functional change
Copyright 2011–2025 Next Chess Move LLC
Feedback & Support Terms of Service Privacy Policy Desktop Version