Dev Builds » 20200525-2018

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 06:28:58 582021 4000 62 2614 1324 -262.24 ± 6.88 638 1277 84 1 0 -663.25 ± 37.69
ncm-dbt-02 06:30:52 585091 4004 57 2543 1404 -252.39 ± 6.46 571 1346 83 2 0 -661.37 ± 37.92
ncm-dbt-03 06:29:18 587142 4000 73 2557 1370 -252.46 ± 6.52 575 1336 87 2 0 -653.21 ± 37.01
ncm-dbt-04 06:30:03 568345 4000 61 2596 1343 -259.76 ± 6.79 620 1299 77 4 0 -665.33 ± 39.31
ncm-dbt-05 06:30:41 583182 3996 60 2574 1362 -257.09 ± 6.63 601 1312 85 0 0 -665.14 ± 37.46
20000 313 12884 6803 -256.76 ± 2.98 3005 6570 416 9 0 -661.6 ± 16.74

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
450917 ncm-dbt-02 588728 4 0 4 0 -1161.37 ± 331.6 2 0 0 0 0 -1199.83 ± 312.71
450916 ncm-dbt-05 582945 496 13 313 170 -243.46 ± 19.05 70 160 18 0 0 -569.64 ± 86.0
450915 ncm-dbt-04 566572 500 5 324 171 -262.24 ± 18.98 78 163 9 0 0 -694.7 ± 134.18
450914 ncm-dbt-01 575883 500 8 328 164 -263.41 ± 18.84 78 164 8 0 0 -715.51 ± 146.53
450913 ncm-dbt-03 588600 500 5 317 178 -254.16 ± 17.97 69 176 3 2 0 -739.1 ± 278.68
450912 ncm-dbt-02 581943 500 7 317 176 -251.89 ± 17.95 70 170 10 0 0 -676.04 ± 124.55
450911 ncm-dbt-05 574581 500 6 337 157 -276.68 ± 20.16 88 155 7 0 0 -739.05 ± 163.27
450910 ncm-dbt-04 569789 500 9 330 161 -264.59 ± 20.63 84 154 11 1 0 -629.43 ± 115.29
450909 ncm-dbt-01 583028 500 5 326 169 -264.59 ± 19.55 81 159 10 0 0 -676.04 ± 124.55
450908 ncm-dbt-03 589027 500 10 308 182 -238.65 ± 16.49 59 180 11 0 0 -659.13 ± 116.77
450907 ncm-dbt-02 586097 500 7 305 188 -238.65 ± 16.76 60 178 12 0 0 -643.67 ± 110.29
450906 ncm-dbt-05 585759 500 7 319 174 -254.15 ± 17.97 71 170 9 0 0 -694.7 ± 134.18
450905 ncm-dbt-03 587494 500 7 328 165 -264.59 ± 19.27 80 161 9 0 0 -694.7 ± 134.18
450904 ncm-dbt-04 566454 500 8 318 174 -251.89 ± 18.5 72 166 12 0 0 -643.67 ± 110.29
450903 ncm-dbt-01 582068 500 5 332 163 -271.78 ± 19.57 84 159 7 0 0 -739.05 ± 163.27
450902 ncm-dbt-02 584076 500 8 329 163 -264.59 ± 19.82 81 160 8 1 0 -676.08 ± 142.43
450901 ncm-dbt-05 582068 500 12 329 159 -259.9 ± 20.04 81 155 14 0 0 -616.18 ± 100.06
450900 ncm-dbt-03 585801 500 10 320 170 -251.89 ± 18.76 73 164 13 0 0 -629.41 ± 104.8
450899 ncm-dbt-01 583614 500 10 343 147 -279.16 ± 22.16 96 141 13 0 0 -629.41 ± 104.8
450898 ncm-dbt-04 565784 500 6 323 171 -259.9 ± 18.12 74 169 7 0 0 -739.05 ± 163.27
450897 ncm-dbt-02 586562 500 5 323 172 -261.07 ± 18.83 77 164 9 0 0 -694.7 ± 134.18
450896 ncm-dbt-05 585843 500 3 312 185 -250.76 ± 16.68 65 179 6 0 0 -766.17 ± 188.02
450895 ncm-dbt-03 585506 500 9 313 178 -245.19 ± 17.9 67 170 13 0 0 -629.41 ± 104.8
450894 ncm-dbt-01 584327 500 9 318 173 -250.76 ± 18.62 71 168 10 1 0 -643.7 ± 122.54
450893 ncm-dbt-02 585253 500 7 322 171 -257.59 ± 18.12 73 169 8 0 0 -715.51 ± 146.53
450892 ncm-dbt-04 570869 500 7 314 179 -248.52 ± 17.52 67 173 10 0 0 -676.04 ± 124.55
450891 ncm-dbt-05 587325 500 8 322 170 -256.44 ± 19.07 76 162 12 0 0 -643.67 ± 110.29
450890 ncm-dbt-03 587028 500 11 316 173 -246.3 ± 17.78 67 171 12 0 0 -643.67 ± 110.29
450889 ncm-dbt-01 581693 500 9 323 168 -256.44 ± 19.6 78 158 14 0 0 -616.18 ± 100.06
450888 ncm-dbt-04 567680 500 9 325 166 -258.75 ± 19.36 77 163 9 1 0 -659.17 ± 131.36
450887 ncm-dbt-02 582444 500 4 313 183 -250.76 ± 17.81 69 171 10 0 0 -676.04 ± 124.55
450886 ncm-dbt-03 585548 500 7 331 162 -268.16 ± 20.26 85 154 11 0 0 -659.13 ± 116.77
450885 ncm-dbt-01 581569 500 7 326 167 -262.24 ± 19.26 79 161 10 0 0 -676.04 ± 124.55
450884 ncm-dbt-02 584874 500 8 322 170 -256.44 ± 19.07 76 162 12 0 0 -643.67 ± 110.29
450883 ncm-dbt-05 583908 500 7 318 175 -253.02 ± 18.64 73 165 12 0 0 -643.67 ± 110.29
450882 ncm-dbt-04 570068 500 12 323 165 -253.02 ± 19.68 76 160 13 1 0 -603.86 ± 103.96
450881 ncm-dbt-05 583028 500 4 324 172 -263.41 ± 18.55 77 166 7 0 0 -739.05 ± 163.27
450880 ncm-dbt-01 583992 500 9 318 173 -250.76 ± 18.35 71 167 12 0 0 -643.67 ± 110.29
450879 ncm-dbt-03 588132 500 14 324 162 -251.89 ± 19.28 75 160 15 0 0 -603.84 ± 95.91
450878 ncm-dbt-04 569549 500 5 339 156 -280.42 ± 21.19 92 151 6 1 0 -715.55 ± 177.2
450877 ncm-dbt-02 585843 500 11 308 181 -237.58 ± 17.91 63 172 14 1 0 -592.29 ± 99.42

Commit

Commit ID d40d04c17ceadff6f15d1cb1d4d469f823a35a02
Author Vizvezdenec
Date 2020-05-25 20:18:56 UTC
Give bonus for rooks that are alligned with enemy kingring The idea of this patch is that if rooks are not directly attacking the opponent king, they can support king attacks staying behind pawns or minor pieces and be really deadly if position slightly opens up at enemy king ring ranks. Loosely based on some stockfish games where it underestimated attacks on it king when enemy has one or two rooks supporting pawn pushes towards it king. passed STC https://tests.stockfishchess.org/tests/view/5ecb093680f2c838b96550f9 LLR: 2.93 (-2.94,2.94) {-0.50,1.50} Total: 53672 W: 10535 L: 10265 D: 32872 Ptnml(0-2): 952, 6210, 12258, 6448, 968 passed LTC https://tests.stockfishchess.org/tests/view/5ecb639f80f2c838b9655117 LLR: 2.94 (-2.94,2.94) {0.25,1.75} Total: 62424 W: 8094 L: 7748 D: 46582 Ptnml(0-2): 426, 5734, 18565, 6042, 445 closes https://github.com/official-stockfish/Stockfish/pull/2700 Bench: 4663220
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