Dev Builds » 20210522-1723

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 06:47:37 581726 4000 333 1748 1919 -128.45 ± 5.05 75 1320 550 55 0 -281.68 ± 14.54
ncm-dbt-02 06:48:19 585417 4000 315 1807 1878 -136.16 ± 5.05 106 1311 552 31 0 -296.61 ± 14.48
ncm-dbt-03 06:47:23 585991 3996 324 1787 1885 -133.39 ± 4.96 82 1339 537 40 0 -295.4 ± 14.71
ncm-dbt-04 06:47:39 567266 4004 380 1814 1810 -130.2 ± 5.12 87 1314 547 54 0 -283.47 ± 14.58
ncm-dbt-05 06:50:56 581003 4000 346 1772 1882 -129.55 ± 5.19 96 1287 564 53 0 -278.55 ± 14.35
20000 1698 8928 9374 -131.54 ± 2.27 446 6571 2750 233 0 -287.03 ± 6.49

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
442189 ncm-dbt-04 564958 4 0 2 2 -190.27 ± 27.79 0 2 0 0 0 -1199.83 ± 312.71
442188 ncm-dbt-03 583112 496 49 221 226 -125.69 ± 14.03 10 156 78 4 0 -271.31 ± 38.73
442187 ncm-dbt-05 579207 500 39 234 227 -143.07 ± 14.81 18 162 67 3 0 -306.84 ± 41.99
442186 ncm-dbt-04 567482 500 52 223 225 -123.81 ± 13.98 10 155 81 4 0 -265.78 ± 37.95
442185 ncm-dbt-02 585211 500 40 226 234 -135.76 ± 13.2 7 176 63 4 0 -312.48 ± 43.44
442184 ncm-dbt-01 583279 500 45 217 238 -124.6 ± 14.8 8 167 64 11 0 -273.0 ± 42.83
442183 ncm-dbt-03 588515 500 35 233 232 -145.54 ± 14.57 16 170 60 4 0 -321.19 ± 44.57
442182 ncm-dbt-05 578918 500 44 219 237 -126.97 ± 14.94 11 162 68 9 0 -273.0 ± 41.7
442181 ncm-dbt-02 584537 500 45 224 231 -130.14 ± 16.16 20 147 75 8 0 -261.07 ± 39.69
442180 ncm-dbt-04 568593 500 62 222 216 -115.22 ± 14.69 10 148 84 8 0 -240.82 ± 37.4
442179 ncm-dbt-01 577766 500 41 208 251 -120.67 ± 14.01 6 163 73 8 0 -265.78 ± 40.25
442178 ncm-dbt-03 583908 500 50 228 222 -129.35 ± 13.9 8 168 68 6 0 -288.06 ± 41.76
442177 ncm-dbt-05 583196 500 48 222 230 -126.17 ± 14.29 9 163 71 7 0 -275.45 ± 40.84
442176 ncm-dbt-04 569949 500 43 229 228 -135.76 ± 13.57 9 172 65 4 0 -306.84 ± 42.73
442175 ncm-dbt-02 585674 500 38 222 240 -134.15 ± 14.33 13 162 71 4 0 -290.66 ± 40.76
442174 ncm-dbt-01 581610 500 46 222 232 -127.76 ± 14.44 11 160 73 6 0 -275.45 ± 40.24
442173 ncm-dbt-03 585632 500 33 209 258 -127.76 ± 13.21 4 174 66 6 0 -293.29 ± 42.41
442172 ncm-dbt-04 565037 500 52 227 221 -126.97 ± 15.26 14 155 73 8 0 -265.78 ± 40.25
442171 ncm-dbt-01 583363 500 36 209 255 -125.38 ± 12.7 4 168 75 3 0 -285.49 ± 39.5
442170 ncm-dbt-05 581610 500 48 209 243 -116.0 ± 14.69 11 146 86 7 0 -240.82 ± 36.9
442169 ncm-dbt-02 587877 500 33 233 234 -147.19 ± 14.15 16 170 62 2 0 -327.18 ± 43.69
442168 ncm-dbt-04 568196 500 35 225 240 -138.99 ± 14.39 11 175 57 7 0 -312.48 ± 45.66
442167 ncm-dbt-03 584874 500 32 226 242 -142.25 ± 13.37 8 183 54 5 0 -333.32 ± 47.06
442166 ncm-dbt-05 577930 500 47 229 224 -132.54 ± 15.03 15 158 71 6 0 -280.42 ± 40.83
442165 ncm-dbt-02 584285 500 45 216 239 -123.81 ± 14.15 12 150 85 3 0 -261.07 ± 36.86
442164 ncm-dbt-01 579289 500 45 224 231 -130.14 ± 15.7 14 162 63 11 0 -275.45 ± 43.16
442119 ncm-dbt-05 582110 500 39 221 240 -132.54 ± 14.36 10 169 64 7 0 -293.29 ± 43.07
442118 ncm-dbt-01 584285 500 41 223 236 -132.54 ± 14.01 11 164 71 4 0 -290.66 ± 40.76
442117 ncm-dbt-04 567958 500 46 236 218 -138.99 ± 14.21 14 165 68 3 0 -304.07 ± 41.65
442116 ncm-dbt-02 585000 500 39 231 230 -140.62 ± 14.87 16 165 64 5 0 -304.07 ± 43.1
442115 ncm-dbt-03 587028 500 39 221 240 -132.54 ± 14.7 11 168 63 8 0 -290.66 ± 43.37
442114 ncm-dbt-05 581985 500 42 225 233 -133.34 ± 14.68 11 169 62 8 0 -293.29 ± 43.72
442113 ncm-dbt-01 582152 500 36 225 239 -138.18 ± 14.59 13 169 62 6 0 -304.07 ± 43.81
442112 ncm-dbt-04 565626 500 39 226 235 -136.56 ± 14.96 11 175 54 10 0 -304.07 ± 46.54
442111 ncm-dbt-02 585674 500 40 230 230 -138.99 ± 13.48 12 167 70 1 0 -309.64 ± 40.79
442110 ncm-dbt-03 586562 500 42 220 238 -129.35 ± 13.9 11 159 77 3 0 -280.42 ± 38.93
442109 ncm-dbt-01 582068 500 43 220 237 -128.55 ± 13.91 8 167 69 6 0 -285.49 ± 41.44
442108 ncm-dbt-05 583070 500 39 213 248 -126.17 ± 14.46 11 158 75 6 0 -270.57 ± 39.67
442107 ncm-dbt-04 567601 500 51 224 225 -125.38 ± 14.63 8 167 65 10 0 -275.45 ± 42.59
442106 ncm-dbt-03 588302 500 44 229 227 -134.95 ± 14.48 14 161 71 4 0 -290.66 ± 40.76
442105 ncm-dbt-02 585084 500 35 225 240 -138.99 ± 13.67 10 174 62 4 0 -315.35 ± 43.81

Commit

Commit ID ff4c22238a199625cf7f02be1816b07fc49f5d45
Author bmc4
Date 2021-05-22 17:23:15 UTC
Tuning Search This patch tunes constant in search.cpp STC: LLR: 2.94 (-2.94,2.94) <-0.50,2.50> Total: 30648 W: 2580 L: 2410 D: 25658 Ptnml(0-2): 80, 1969, 11093, 2065, 117 https://tests.stockfishchess.org/tests/view/60a71d3cce8ea25a3ef03fae LTC: LLR: 2.95 (-2.94,2.94) <0.50,3.50> Total: 52896 W: 1776 L: 1617 D: 49503 Ptnml(0-2): 13, 1462, 23347, 1605, 21 https://tests.stockfishchess.org/tests/view/60a794ddce8ea25a3ef0400a closes https://github.com/official-stockfish/Stockfish/pull/3491 Bench: 4004731
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