Dev Builds » 20230308-0616

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 06:58:43 583120 4000 1269 814 1917 +39.69 ± 5.18 5 249 1043 692 11 +79.35 ± 10.5
ncm-dbt-02 06:56:57 585240 4000 1263 827 1910 +38.02 ± 5.21 6 261 1032 693 8 +76.61 ± 10.57
ncm-dbt-03 06:59:37 586712 4006 1220 802 1984 +36.39 ± 5.19 4 276 1024 696 3 +73.77 ± 10.62
ncm-dbt-04 06:58:45 570405 4000 1259 795 1946 +40.48 ± 5.1 4 239 1054 695 8 +81.37 ± 10.42
ncm-dbt-05 06:59:56 584578 3994 1262 813 1919 +39.22 ± 5.08 4 238 1068 679 8 +78.74 ± 10.34
20000 6273 4051 9676 +38.76 ± 2.3 23 1263 5221 3455 38 +77.96 ± 4.69

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
410497 ncm-dbt-03 586266 6 2 0 4 +120.22 ± 109.7 0 0 1 2 0 +279.24 ± 576.89 ↓
410495 ncm-dbt-05 582861 494 148 110 236 +26.78 ± 14.02 0 33 145 67 2 +51.0 ± 27.77 ↓
410494 ncm-dbt-01 582694 500 161 109 230 +36.26 ± 14.26 1 29 138 81 1 +73.34 ± 28.71 ↓
410493 ncm-dbt-02 585337 500 162 103 235 +41.19 ± 15.21 1 35 118 96 0 +85.04 ± 31.44 ↓
410492 ncm-dbt-04 571351 500 162 98 240 +44.72 ± 14.1 0 27 133 89 1 +89.48 ± 29.33 ↓
410491 ncm-dbt-03 586646 500 152 99 249 +36.97 ± 14.57 0 35 127 88 0 +74.79 ± 30.24 ↓
410490 ncm-dbt-05 586858 500 160 97 243 +44.01 ± 14.2 1 26 132 91 0 +90.97 ± 29.47 ↓
410489 ncm-dbt-02 583489 500 161 112 227 +34.16 ± 13.85 0 30 142 77 1 +67.55 ± 28.18 ↓
410488 ncm-dbt-01 583782 500 157 114 229 +29.95 ± 14.5 0 36 137 75 2 +57.5 ± 28.93 ↓
410487 ncm-dbt-03 587240 500 156 107 237 +34.16 ± 14.13 0 33 135 82 0 +68.99 ± 29.16 ↓
410486 ncm-dbt-04 570869 500 172 92 236 +56.07 ± 14.15 0 23 125 101 1 +113.68 ± 30.37 ↓
410485 ncm-dbt-05 582444 500 159 101 240 +40.49 ± 14.12 1 27 135 87 0 +83.57 ± 29.08 ↓
410484 ncm-dbt-04 567403 500 147 104 249 +29.95 ± 14.24 0 35 138 76 1 +58.93 ± 28.79 ↓
410483 ncm-dbt-02 587282 500 159 107 234 +36.26 ± 14.4 0 34 130 86 0 +73.34 ± 29.83 ↓
410482 ncm-dbt-01 585337 500 155 96 249 +41.19 ± 14.7 1 30 129 89 1 +83.57 ± 29.93 ↓
410481 ncm-dbt-03 587579 500 149 108 243 +28.55 ± 14.79 1 37 133 78 1 +57.5 ± 29.47 ↓
410480 ncm-dbt-05 585464 500 166 111 223 +38.37 ± 13.99 0 28 141 79 2 +74.79 ± 28.27 ↓
410479 ncm-dbt-04 567799 500 160 104 236 +39.08 ± 15.08 1 34 124 90 1 +79.17 ± 30.64 ↓
410478 ncm-dbt-01 581111 500 161 99 240 +43.3 ± 14.16 1 25 136 87 1 +88.0 ± 28.9 ↓
410477 ncm-dbt-02 586520 500 157 101 242 +39.08 ± 14.31 1 27 139 81 2 +77.71 ± 28.54 ↓
410476 ncm-dbt-03 586562 500 158 84 258 +51.8 ± 15.01 1 29 115 105 0 +107.54 ± 31.86 ↓
410475 ncm-dbt-04 569470 500 152 100 248 +36.26 ± 14.26 1 28 141 78 2 +71.89 ± 28.29 ↓
410474 ncm-dbt-05 585421 500 150 92 258 +40.48 ± 14.26 1 27 136 85 1 +82.1 ± 28.94 ↓
410473 ncm-dbt-01 585169 500 151 111 238 +27.86 ± 14.87 1 39 129 81 0 +57.5 ± 30.0 ↓
410472 ncm-dbt-02 586266 500 141 101 258 +27.86 ± 15.0 1 40 127 82 0 +57.5 ± 30.27 ↓
410471 ncm-dbt-03 586562 500 144 96 260 +33.46 ± 14.61 1 34 131 84 0 +68.99 ± 29.71 ↓
410470 ncm-dbt-05 584832 500 170 103 227 +46.84 ± 14.09 0 27 129 94 0 +95.44 ± 29.88 ↓
410469 ncm-dbt-04 571150 500 158 100 242 +40.48 ± 15.04 1 33 124 91 1 +82.1 ± 30.63 ↓
410468 ncm-dbt-01 583112 500 163 88 249 +52.51 ± 13.98 0 24 127 99 0 +107.54 ± 30.1 ↓
410467 ncm-dbt-02 584748 500 161 102 237 +41.19 ± 14.83 2 29 127 92 0 +86.52 ± 30.2 ↓
410466 ncm-dbt-03 586350 500 152 108 240 +30.65 ± 14.68 0 39 128 83 0 +61.79 ± 30.13 ↓
410465 ncm-dbt-05 582485 500 152 97 251 +38.37 ± 15.04 0 37 122 90 1 +76.25 ± 30.91 ↓
410464 ncm-dbt-02 585590 500 165 101 234 +44.72 ± 15.53 1 33 120 93 3 +88.0 ± 31.17 ↓
410463 ncm-dbt-04 571752 500 165 108 227 +39.78 ± 14.21 1 27 137 84 1 +80.63 ± 28.81 ↓
410462 ncm-dbt-01 581693 500 166 97 237 +48.25 ± 14.96 1 27 127 92 3 +95.44 ± 30.17 ↓
410461 ncm-dbt-03 586181 500 156 96 248 +41.89 ± 14.87 1 30 129 88 2 +83.57 ± 29.93 ↓
410460 ncm-dbt-02 582694 500 157 100 243 +39.78 ± 14.74 0 33 129 86 2 +77.71 ± 29.96 ↓
410459 ncm-dbt-05 586266 500 157 102 241 +38.37 ± 15.04 1 33 128 86 2 +76.25 ± 30.1 ↓
410458 ncm-dbt-04 573446 500 143 89 268 +37.67 ± 14.22 0 32 132 86 0 +76.25 ± 29.54 ↓
410457 ncm-dbt-01 582068 500 155 100 245 +38.37 ± 15.54 0 39 120 88 3 +73.34 ± 31.18 ↓
410456 ncm-dbt-03 587028 500 151 104 245 +32.76 ± 14.82 0 39 125 86 0 +66.1 ± 30.52 ↓

Commit

Commit ID 39da50ed23ee3f1bd32a58c8f02471faa9a9fd63
Author Michael Chaly
Date 2023-03-08 06:16:09 UTC
Do more negative extensions This patch does negatively extend transposition table move if singular search failed and tt value is not bigger than alpha. Logic is close to what we had before recent simplification of negative extensions but uses or condition instead of and condition. Passed STC: https://tests.stockfishchess.org/tests/view/6404c8102644b62c33934607 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 119040 W: 31841 L: 31416 D: 55783 Ptnml(0-2): 356, 13070, 32292, 13397, 405 Passed LTC: https://tests.stockfishchess.org/tests/view/6405abda2644b62c33937119 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 47216 W: 12816 L: 12496 D: 21904 Ptnml(0-2): 12, 4500, 14286, 4776, 34 closes https://github.com/official-stockfish/Stockfish/pull/4430 bench 4747020
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