Dev Builds » 20200818-1815

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 06:33:20 582714 4000 54 2626 1320 -265.19 ± 6.82 644 1284 72 0 0 -694.73 ± 40.82
ncm-dbt-02 06:33:35 586796 4000 75 2576 1349 -254.87 ± 6.73 602 1298 99 1 0 -634.65 ± 34.64
ncm-dbt-03 06:33:35 585539 3998 58 2602 1338 -261.26 ± 6.84 630 1286 81 2 0 -665.24 ± 38.39
ncm-dbt-04 06:32:16 568025 4012 57 2642 1313 -265.97 ± 6.93 657 1272 76 1 0 -681.1 ± 39.69
ncm-dbt-05 06:33:20 581094 3990 56 2631 1303 -266.59 ± 6.97 656 1265 72 2 0 -684.72 ± 40.8
20000 300 13077 6623 -262.74 ± 3.07 3189 6405 400 6 0 -670.84 ± 17.07

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
437824 ncm-dbt-04 567799 12 2 8 2 -190.66 ± 174.29 2 2 2 0 0 -279.41 ± 548.26
437823 ncm-dbt-05 582402 490 7 326 157 -269.97 ± 20.76 85 149 11 0 0 -655.55 ± 116.74
437822 ncm-dbt-02 587877 500 11 314 175 -244.09 ± 18.52 69 165 16 0 0 -592.27 ± 92.24
437821 ncm-dbt-01 583070 500 4 322 174 -261.07 ± 17.68 73 172 5 0 0 -798.18 ± 231.48
437820 ncm-dbt-03 585295 498 5 324 169 -263.74 ± 19.21 79 161 9 0 0 -693.99 ± 134.17
437819 ncm-dbt-04 568315 500 7 324 169 -259.9 ± 18.97 76 166 7 1 0 -694.74 ± 156.93
437818 ncm-dbt-05 577725 500 9 322 169 -255.3 ± 19.46 76 162 11 1 0 -629.43 ± 115.29
437817 ncm-dbt-01 578588 500 8 326 166 -261.07 ± 19.66 80 158 12 0 0 -643.67 ± 110.29
437816 ncm-dbt-02 586943 500 12 327 161 -257.59 ± 20.76 82 152 15 1 0 -581.4 ± 95.42
437815 ncm-dbt-03 587452 500 14 329 157 -257.59 ± 21.25 84 148 17 1 0 -561.36 ± 88.68
437814 ncm-dbt-04 569669 500 7 339 154 -277.92 ± 20.6 90 152 8 0 0 -715.51 ± 146.53
437813 ncm-dbt-01 583698 500 8 330 162 -265.77 ± 19.69 82 158 10 0 0 -676.04 ± 124.55
437812 ncm-dbt-05 577069 500 7 335 158 -272.99 ± 20.29 87 154 9 0 0 -694.7 ± 134.18
437811 ncm-dbt-03 584706 500 7 321 172 -256.44 ± 17.97 72 170 8 0 0 -715.51 ± 146.53
437810 ncm-dbt-02 587240 500 11 322 167 -253.02 ± 18.91 74 163 13 0 0 -629.41 ± 104.8
437809 ncm-dbt-04 568752 500 8 332 160 -268.16 ± 19.99 84 156 10 0 0 -676.04 ± 124.55
437808 ncm-dbt-01 583950 500 6 333 161 -271.78 ± 19.28 83 161 6 0 0 -766.17 ± 188.02
437807 ncm-dbt-05 580406 500 7 323 170 -258.74 ± 18.26 74 168 8 0 0 -715.51 ± 146.53
437806 ncm-dbt-02 588345 500 6 308 186 -243.0 ± 16.24 60 182 8 0 0 -715.51 ± 146.53
437805 ncm-dbt-03 584706 500 6 324 170 -261.07 ± 19.11 78 162 10 0 0 -676.04 ± 124.55
437804 ncm-dbt-04 567244 500 6 345 149 -286.77 ± 22.24 99 141 10 0 0 -676.04 ± 124.55
437803 ncm-dbt-01 581943 500 4 324 172 -263.41 ± 17.97 75 170 5 0 0 -798.18 ± 231.48
437802 ncm-dbt-03 583992 500 6 325 169 -262.24 ± 18.98 77 166 6 1 0 -715.55 ± 177.2
437801 ncm-dbt-05 583992 500 3 329 168 -270.57 ± 18.83 81 164 5 0 0 -798.18 ± 231.48
437800 ncm-dbt-02 585464 500 8 329 163 -264.59 ± 20.09 83 155 12 0 0 -643.67 ± 110.29
437799 ncm-dbt-04 567839 500 5 329 166 -268.16 ± 19.13 81 162 7 0 0 -739.05 ± 163.27
437798 ncm-dbt-05 577151 500 3 342 155 -286.77 ± 20.11 92 155 3 0 0 -887.58 ± 222.18
437797 ncm-dbt-01 582861 500 10 325 165 -257.59 ± 20.51 82 151 17 0 0 -581.38 ± 88.96
437796 ncm-dbt-03 587113 500 5 316 179 -253.02 ± 18.37 72 167 11 0 0 -659.13 ± 116.77
437795 ncm-dbt-04 567680 500 11 324 165 -255.29 ± 18.93 75 163 12 0 0 -643.67 ± 110.29
437794 ncm-dbt-02 585885 500 6 325 169 -262.24 ± 18.98 78 163 9 0 0 -694.7 ± 134.18
437793 ncm-dbt-04 566178 500 5 322 173 -259.9 ± 19.24 78 161 11 0 0 -659.13 ± 116.77
437792 ncm-dbt-05 586393 500 12 328 160 -258.74 ± 20.41 82 152 16 0 0 -592.27 ± 92.24
437791 ncm-dbt-03 586097 500 6 324 170 -261.07 ± 18.55 76 166 8 0 0 -715.51 ± 146.53
437790 ncm-dbt-01 583112 500 8 334 158 -270.57 ± 20.0 85 156 9 0 0 -694.7 ± 134.18
437789 ncm-dbt-02 587070 500 9 330 161 -264.59 ± 19.82 82 157 11 0 0 -659.13 ± 116.77
437788 ncm-dbt-04 568752 500 6 319 175 -255.29 ± 18.11 72 169 9 0 0 -694.7 ± 134.18
437787 ncm-dbt-05 583614 500 8 326 166 -261.07 ± 19.65 79 161 9 1 0 -659.17 ± 131.36
437786 ncm-dbt-01 584495 500 6 332 162 -270.57 ± 19.71 84 158 8 0 0 -715.51 ± 146.53
437785 ncm-dbt-03 584958 500 9 339 152 -275.44 ± 21.43 92 146 12 0 0 -643.67 ± 110.29
437784 ncm-dbt-02 585548 500 12 321 167 -250.76 ± 19.14 74 161 15 0 0 -603.84 ± 95.91

Commit

Commit ID 42e8789f0b3935b7ea389b3aa929e05e0a016872
Author syzygy1
Date 2020-08-18 18:15:07 UTC
Expanded support for x86-32 architectures. add new ARCH targets x86-32-sse41-popcnt > x86 32-bit with sse41 and popcnt support x86-32-sse2 > x86 32-bit with sse2 support x86-32 > x86 32-bit generic (with mmx and sse support) retire x86-32-old (use general-32) closes https://github.com/official-stockfish/Stockfish/pull/3022 No functional change.
Copyright 2011–2025 Next Chess Move LLC