Dev Builds » 20230109-1928

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 06:59:25 583953 4000 1167 874 1959 +25.5 ± 5.13 2 312 1083 597 6 +50.56 ± 10.29
ncm-dbt-02 07:01:03 585124 3992 1199 859 1934 +29.66 ± 5.23 1 313 1033 643 6 +58.87 ± 10.57
ncm-dbt-03 07:00:27 585961 4000 1205 921 1874 +24.71 ± 5.05 4 297 1115 579 5 +49.49 ± 10.1
ncm-dbt-04 07:01:25 569037 4024 1186 854 1984 +28.73 ± 5.15 1 311 1059 637 4 +57.33 ± 10.43
ncm-dbt-05 07:00:29 584360 3984 1200 868 1916 +29.02 ± 5.25 4 307 1042 631 8 +57.73 ± 10.52
20000 5957 4376 9667 +27.52 ± 2.31 12 1540 5332 3087 29 +54.79 ± 4.64

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
412438 ncm-dbt-04 569190 24 7 3 14 +58.44 ± 87.93 0 3 2 7 0 +120.41 ± 223.72 ↓
412437 ncm-dbt-05 586901 484 145 119 220 +18.68 ± 15.93 1 47 121 71 2 +36.02 ± 31.04 ↓
412436 ncm-dbt-02 587113 492 147 98 247 +34.72 ± 14.89 1 33 129 82 1 +70.14 ± 29.93 ↓
412435 ncm-dbt-03 583992 500 168 109 223 +41.19 ± 14.3 1 27 135 86 1 +83.57 ± 29.08 ↓
412434 ncm-dbt-01 585632 500 153 120 227 +22.96 ± 14.13 2 32 148 67 1 +47.55 ± 27.45 ↓
412433 ncm-dbt-04 568236 500 162 111 227 +35.56 ± 13.53 0 28 143 79 0 +71.89 ± 28.0 ↓
412432 ncm-dbt-05 580862 500 150 107 243 +29.95 ± 14.37 0 36 136 77 1 +58.93 ± 29.06 ↓
412431 ncm-dbt-02 586012 500 151 99 250 +36.26 ± 14.79 0 36 127 86 1 +71.89 ± 30.24 ↓
412430 ncm-dbt-03 586562 500 162 115 223 +32.76 ± 13.48 0 29 145 76 0 +66.1 ± 27.75 ↓
412429 ncm-dbt-01 585253 500 152 98 250 +37.67 ± 14.74 0 35 127 87 1 +74.79 ± 30.24 ↓
412428 ncm-dbt-04 569909 500 142 97 261 +31.36 ± 14.6 1 35 132 82 0 +64.66 ± 29.59 ↓
412427 ncm-dbt-05 584537 500 147 117 236 +20.87 ± 13.97 0 38 145 66 1 +40.48 ± 27.9 ↓
412426 ncm-dbt-02 584076 500 142 103 255 +27.15 ± 15.33 0 46 119 85 0 +54.65 ± 31.29 ↓
412425 ncm-dbt-03 586012 500 160 116 224 +30.65 ± 14.02 0 33 141 75 1 +60.36 ± 28.36 ↓
412424 ncm-dbt-01 581985 500 139 106 255 +22.96 ± 14.27 0 38 143 67 2 +43.3 ± 28.16 ↓
412423 ncm-dbt-04 569669 500 141 114 245 +18.78 ± 14.85 0 45 135 68 2 +34.86 ± 29.25 ↓
412422 ncm-dbt-05 583782 500 159 98 243 +42.6 ± 14.65 0 32 126 91 1 +85.04 ± 30.35 ↓
412421 ncm-dbt-02 584874 500 148 109 243 +27.15 ± 14.83 0 41 130 78 1 +53.22 ± 29.88 ↓
412420 ncm-dbt-03 584495 500 149 116 235 +22.96 ± 15.03 1 41 134 72 2 +44.72 ± 29.37 ↓
412419 ncm-dbt-01 582903 500 149 115 236 +23.66 ± 15.45 0 48 121 80 1 +46.13 ± 31.04 ↓
412418 ncm-dbt-04 570308 500 156 104 240 +36.26 ± 14.13 0 32 134 84 0 +73.34 ± 29.28 ↓
412417 ncm-dbt-05 584958 500 150 90 260 +41.89 ± 15.25 1 34 120 94 1 +85.04 ± 31.17 ↓
412416 ncm-dbt-02 585590 500 158 107 235 +35.56 ± 14.61 0 35 130 84 1 +70.44 ± 29.84 ↓
412415 ncm-dbt-03 586266 500 142 107 251 +24.36 ± 15.01 1 42 128 79 0 +50.38 ± 30.14 ↓
412414 ncm-dbt-01 585885 500 144 103 253 +28.55 ± 14.41 0 38 133 79 0 +57.5 ± 29.47 ↓
412413 ncm-dbt-04 569071 500 143 96 261 +32.76 ± 14.56 0 37 129 84 0 +66.1 ± 29.99 ↓
412412 ncm-dbt-05 581610 500 141 109 250 +22.27 ± 14.98 2 40 132 76 0 +47.55 ± 29.63 ↓
412411 ncm-dbt-02 583908 500 153 111 236 +29.25 ± 13.92 0 33 143 73 1 +57.5 ± 28.1 ↓
412410 ncm-dbt-03 586139 500 145 126 229 +13.21 ± 13.89 0 43 145 62 0 +26.46 ± 27.94 ↓
412409 ncm-dbt-01 582068 500 142 108 250 +23.66 ± 14.19 0 38 141 70 1 +46.13 ± 28.42 ↓
412408 ncm-dbt-04 568434 500 150 113 237 +25.76 ± 14.73 0 41 132 76 1 +50.38 ± 29.62 ↓
412407 ncm-dbt-02 582945 500 155 119 226 +25.06 ± 15.43 0 47 121 81 1 +48.96 ± 31.04 ↓
412406 ncm-dbt-05 586266 500 147 118 235 +20.17 ± 14.7 0 44 134 71 1 +39.08 ± 29.38 ↓
412405 ncm-dbt-01 584622 500 151 109 240 +29.25 ± 14.32 0 37 134 79 0 +58.93 ± 29.33 ↓
412404 ncm-dbt-03 586562 500 142 120 238 +15.3 ± 14.06 1 40 145 64 0 +32.05 ± 27.93 ↓
412403 ncm-dbt-04 569549 500 149 116 235 +22.96 ± 14.91 0 45 127 78 0 +46.13 ± 30.28 ↓
412402 ncm-dbt-05 585970 500 161 110 229 +35.56 ± 14.74 0 36 128 85 1 +70.44 ± 30.11 ↓
412401 ncm-dbt-02 586477 500 145 113 242 +22.27 ± 14.48 0 42 134 74 0 +44.72 ± 29.37 ↓
412400 ncm-dbt-01 583279 500 137 115 248 +15.3 ± 14.45 0 46 136 68 0 +30.65 ± 29.13 ↓
412399 ncm-dbt-04 566967 500 136 100 264 +25.06 ± 15.18 0 45 125 79 1 +48.96 ± 30.53 ↓
412398 ncm-dbt-03 587664 500 137 112 251 +17.38 ± 14.23 0 42 142 65 1 +33.46 ± 28.33 ↓

Commit

Commit ID e9e7a7b83f78b5c7d29f69083589b449d9b52390
Author Sebastian Buchwald
Date 2023-01-09 19:28:24 UTC
Replace some std::string occurrences with std::string_view std::string_view is more lightweight than std::string. Furthermore, std::string_view variables can be declared constexpr. closes https://github.com/official-stockfish/Stockfish/pull/4328 No functional change
Copyright 2011–2025 Next Chess Move LLC
Feedback & Support Terms of Service Privacy Policy Desktop Version