Dev Builds » 20230816-1924

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 06:53:15 582573 4004 1361 683 1960 +59.4 ± 4.98 1 174 977 846 4 +121.91 ± 10.84
ncm-dbt-02 06:53:30 586197 4008 1417 719 1872 +61.13 ± 4.98 3 163 976 857 5 +125.9 ± 10.84
ncm-dbt-03 06:53:11 583859 4000 1365 705 1930 +57.86 ± 4.95 2 165 1012 813 8 +117.94 ± 10.61
ncm-dbt-04 06:52:08 567546 3988 1388 685 1915 +61.89 ± 5.08 1 178 939 869 7 +126.79 ± 11.09
ncm-dbt-05 06:53:36 581654 4000 1342 700 1958 +56.25 ± 5.11 1 203 953 839 4 +115.03 ± 11.01
20000 6873 3492 9635 +59.3 ± 2.25 8 883 4857 4224 28 +121.49 ± 4.86

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
423480 ncm-dbt-01 583237 4 2 1 1 +88.51 ± 137.63 0 0 1 1 0 +190.5 ± 634.21 ↓
423479 ncm-dbt-02 587494 8 3 1 4 +88.62 ± 93.84 0 0 2 2 0 +190.67 ± 458.56 ↓
423478 ncm-dbt-04 565076 488 166 70 252 +69.25 ± 13.95 0 17 114 113 0 +144.49 ± 31.84 ↓
423477 ncm-dbt-05 582110 500 169 86 245 +58.21 ± 14.25 0 23 122 104 1 +118.33 ± 30.8 ↓
423476 ncm-dbt-03 584369 500 170 73 257 +68.27 ± 13.53 0 14 127 107 2 +138.99 ± 29.78 ↓
423475 ncm-dbt-02 586689 500 175 91 234 +58.93 ± 13.87 0 20 127 102 1 +119.89 ± 30.01 ↓
423474 ncm-dbt-01 578506 500 175 87 238 +61.79 ± 14.55 0 25 112 113 0 +127.76 ± 32.29 ↓
423473 ncm-dbt-04 568514 500 168 87 245 +56.78 ± 14.32 1 21 125 102 1 +116.78 ± 30.34 ↓
423472 ncm-dbt-05 587155 500 173 105 222 +47.55 ± 14.13 0 27 128 95 0 +96.94 ± 30.02 ↓
423471 ncm-dbt-03 582652 500 164 94 242 +48.96 ± 14.2 0 26 129 94 1 +98.44 ± 29.86 ↓
423470 ncm-dbt-02 586689 500 172 77 251 +66.82 ± 14.89 0 26 103 121 0 +138.99 ± 33.68 ↓
423469 ncm-dbt-01 582861 500 172 84 244 +61.79 ± 13.56 0 17 129 103 1 +126.18 ± 29.62 ↓
423468 ncm-dbt-04 569270 500 168 79 253 +62.51 ± 14.17 0 22 117 111 0 +129.35 ± 31.52 ↓
423467 ncm-dbt-05 577397 500 168 81 251 +61.07 ± 13.82 0 20 123 107 0 +126.18 ± 30.59 ↓
423466 ncm-dbt-02 587325 500 177 93 230 +58.93 ± 13.72 0 19 129 101 1 +119.89 ± 29.69 ↓
423465 ncm-dbt-01 583824 500 167 79 254 +61.79 ± 14.82 0 27 108 115 0 +127.76 ± 32.89 ↓
423464 ncm-dbt-03 585211 500 161 88 251 +51.09 ± 13.76 0 23 131 96 0 +104.49 ± 29.52 ↓
423463 ncm-dbt-04 567284 500 176 91 233 +59.64 ± 14.99 0 28 110 111 1 +121.46 ± 32.59 ↓
423462 ncm-dbt-05 581236 500 173 89 238 +58.93 ± 15.35 1 29 105 115 0 +123.02 ± 33.32 ↓
423461 ncm-dbt-02 585169 500 187 99 214 +61.79 ± 13.42 0 16 131 102 1 +126.18 ± 29.29 ↓
423460 ncm-dbt-01 581319 500 175 87 238 +61.79 ± 14.95 1 24 112 112 1 +127.76 ± 32.29 ↓
423459 ncm-dbt-03 580987 500 166 90 244 +53.22 ± 13.73 1 19 133 97 0 +110.6 ± 29.15 ↓
423458 ncm-dbt-04 567640 500 169 88 243 +56.78 ± 13.33 0 18 133 99 0 +116.78 ± 29.08 ↓
423457 ncm-dbt-05 581153 500 169 90 241 +55.36 ± 14.26 0 24 124 101 1 +112.14 ± 30.53 ↓
423456 ncm-dbt-02 584664 500 174 83 243 +63.95 ± 13.94 0 20 119 111 0 +132.54 ± 31.18 ↓
423455 ncm-dbt-01 584327 500 170 88 242 +57.5 ± 13.37 0 18 132 100 0 +118.33 ± 29.22 ↓
423454 ncm-dbt-03 583196 500 175 95 230 +56.07 ± 14.7 1 24 120 104 1 +115.23 ± 31.11 ↓
423453 ncm-dbt-04 567126 500 166 92 242 +51.8 ± 15.14 0 32 113 104 1 +104.49 ± 32.14 ↓
423452 ncm-dbt-03 584916 500 177 93 230 +58.93 ± 13.58 0 18 131 100 1 +119.89 ± 29.37 ↓
423451 ncm-dbt-01 583531 500 172 81 247 +63.94 ± 14.23 0 21 118 110 1 +130.94 ± 31.35 ↓
423450 ncm-dbt-05 581569 500 152 84 264 +47.54 ± 14.53 0 29 125 95 1 +95.44 ± 30.46 ↓
423449 ncm-dbt-02 586774 500 173 89 238 +58.93 ± 14.42 1 22 119 108 0 +123.02 ± 31.23 ↓
423448 ncm-dbt-04 570108 500 185 84 231 +71.16 ± 14.22 0 18 115 115 2 +145.54 ± 31.75 ↓
423447 ncm-dbt-02 585421 500 185 99 216 +60.36 ± 14.89 1 23 117 107 2 +123.02 ± 31.54 ↓
423446 ncm-dbt-05 583531 500 171 78 251 +65.38 ± 14.42 0 23 111 116 0 +135.76 ± 32.43 ↓
423445 ncm-dbt-03 583489 500 180 75 245 +74.06 ± 13.44 0 14 117 119 0 +155.54 ± 31.31 ↓
423444 ncm-dbt-01 582444 500 171 92 237 +55.36 ± 13.41 0 19 133 98 0 +113.68 ± 29.12 ↓
423443 ncm-dbt-04 565351 500 190 94 216 +67.54 ± 14.65 0 22 112 114 2 +137.37 ± 32.27 ↓
423442 ncm-dbt-05 579083 500 167 87 246 +56.07 ± 14.83 0 28 115 106 1 +113.68 ± 31.86 ↓
423441 ncm-dbt-01 583112 500 157 84 259 +51.09 ± 13.9 0 23 132 94 1 +102.97 ± 29.38 ↓
423440 ncm-dbt-02 585548 500 171 87 242 +58.93 ± 13.72 1 17 129 103 0 +123.02 ± 29.65 ↓
423439 ncm-dbt-03 586054 500 172 97 231 +52.51 ± 14.79 0 27 124 96 3 +102.97 ± 30.57 ↓

Commit

Commit ID fe0dca12f1207a3a1ecca678d7d13bc533fd5332
Author Muzhen Gaming
Date 2023-08-16 19:24:58 UTC
Simplify PvNode Reduction Remove the depth condition for PvNode reduction. Simplification STC: https://tests.stockfishchess.org/tests/view/64d308fa5b17f7c21c0e0303 LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 38976 W: 10106 L: 9889 D: 18981 Ptnml(0-2): 129, 4479, 10040, 4726, 114 Simplification LTC: https://tests.stockfishchess.org/tests/view/64d457db5b17f7c21c0e236f LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 156402 W: 39727 L: 39645 D: 77030 Ptnml(0-2): 71, 17143, 43696, 17215, 76 closes https://github.com/official-stockfish/Stockfish/pull/4747 Bench: 1493904
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