Dev Builds » 20260519-1639

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 06:41:56 582374 4000 1761 306 1933 +132.44 ± 4.49 1 25 527 1412 35 +308.59 ± 14.82
ncm-dbt-02 06:43:06 585947 4004 1791 333 1880 +132.6 ± 4.53 0 28 529 1404 41 +306.7 ± 14.8
ncm-dbt-03 06:42:37 585335 3986 1775 315 1896 +133.46 ± 4.61 0 31 518 1397 47 +307.53 ± 14.97
ncm-dbt-04 06:43:18 567005 4010 1791 328 1891 +132.88 ± 4.49 0 25 532 1408 40 +308.05 ± 14.75
ncm-dbt-05 06:43:32 583421 4000 1775 333 1892 +131.14 ± 4.44 0 26 536 1408 30 +305.45 ± 14.69
20000 8893 1615 9492 +132.5 ± 2.02 1 135 2642 7029 193 +307.26 ± 6.61

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
469772 ncm-dbt-02 586350 4 2 0 2 +190.27 ± 27.79 0 0 0 2 0 +1199.83 ± 312.71
469771 ncm-dbt-04 566928 10 5 0 5 +190.62 ± 141.35 0 0 1 3 1 +381.35 ± 516.06
469770 ncm-dbt-03 587367 486 214 35 237 +134.27 ± 12.47 0 1 67 170 5 +312.51 ± 41.74
469769 ncm-dbt-01 582152 500 218 42 240 +127.76 ± 11.86 0 2 71 176 1 +301.33 ± 40.6
469768 ncm-dbt-05 582527 500 221 42 237 +130.14 ± 12.59 0 3 69 174 4 +301.33 ± 41.33
469767 ncm-dbt-02 586774 500 228 51 221 +128.55 ± 13.19 0 4 71 169 6 +290.66 ± 40.76
469766 ncm-dbt-04 570228 500 224 39 237 +134.95 ± 12.24 0 2 65 179 4 +318.25 ± 42.59
469765 ncm-dbt-03 586689 500 229 33 238 +143.89 ± 13.89 0 7 49 185 9 +336.46 ± 49.21
469764 ncm-dbt-01 581777 500 222 40 238 +132.54 ± 13.47 0 4 68 170 8 +298.62 ± 41.71
469763 ncm-dbt-05 580779 500 218 32 250 +135.76 ± 12.81 0 7 52 189 2 +327.18 ± 47.79
469762 ncm-dbt-02 585970 500 224 43 233 +131.74 ± 13.3 0 4 68 171 7 +298.62 ± 41.71
469761 ncm-dbt-04 567482 500 227 40 233 +136.56 ± 12.39 0 3 61 182 4 +324.17 ± 44.15
469760 ncm-dbt-03 585421 500 220 41 239 +130.14 ± 12.78 0 3 70 172 5 +298.62 ± 41.01
469759 ncm-dbt-01 584117 500 220 31 249 +138.18 ± 12.93 0 4 59 181 6 +324.17 ± 44.97
469758 ncm-dbt-05 581153 500 227 37 236 +138.99 ± 12.3 0 2 61 182 5 +330.23 ± 44.08
469757 ncm-dbt-02 586350 500 226 43 231 +133.34 ± 12.29 0 3 64 180 3 +315.35 ± 43.03
469756 ncm-dbt-04 566691 500 219 47 234 +124.6 ± 12.9 0 4 74 168 4 +282.94 ± 39.86
469755 ncm-dbt-03 584076 500 222 35 243 +136.56 ± 12.39 0 2 64 179 5 +321.19 ± 42.95
469754 ncm-dbt-01 581153 500 225 31 244 +142.25 ± 12.16 0 2 57 186 5 +342.85 ± 45.71
469753 ncm-dbt-05 580738 500 221 51 228 +123.02 ± 12.93 0 3 79 163 5 +275.45 ± 38.39
469752 ncm-dbt-04 565390 500 222 37 241 +134.95 ± 12.64 0 3 64 178 5 +315.35 ± 43.03
469751 ncm-dbt-02 586435 500 226 41 233 +134.95 ± 12.44 0 3 63 180 4 +318.25 ± 43.39
469750 ncm-dbt-03 582903 500 222 44 234 +129.35 ± 13.36 0 4 71 168 7 +290.66 ± 40.76
469749 ncm-dbt-01 584706 500 218 48 234 +123.02 ± 13.11 0 6 71 170 3 +280.42 ± 40.83
469748 ncm-dbt-02 584958 500 221 41 238 +130.94 ± 12.56 0 3 68 175 4 +304.07 ± 41.65
469747 ncm-dbt-05 592245 500 219 31 250 +137.37 ± 12.56 0 3 61 181 5 +324.17 ± 44.15
469746 ncm-dbt-04 566099 500 221 43 236 +129.35 ± 13.17 0 5 67 173 5 +295.94 ± 42.08
469745 ncm-dbt-03 584327 500 222 45 233 +128.55 ± 13.19 0 6 65 175 4 +295.94 ± 42.75
469744 ncm-dbt-01 582235 500 225 31 244 +142.25 ± 12.16 0 1 60 183 6 +339.63 ± 44.35
469743 ncm-dbt-02 583866 500 217 44 239 +125.38 ± 13.96 0 7 70 166 7 +277.93 ± 41.14
469742 ncm-dbt-04 566770 500 235 35 230 +147.19 ± 12.78 0 0 61 178 11 +342.85 ± 43.79
469741 ncm-dbt-05 583866 500 223 53 224 +123.02 ± 12.74 0 3 78 165 4 +277.93 ± 38.66
469740 ncm-dbt-03 586943 500 219 36 245 +133.34 ± 13.08 0 4 65 175 6 +306.84 ± 42.73
469739 ncm-dbt-02 586646 500 225 36 239 +138.18 ± 12.12 0 2 61 183 4 +330.23 ± 44.08
469738 ncm-dbt-01 582778 500 219 49 232 +123.02 ± 13.29 1 3 75 167 4 +280.42 ± 39.57
469737 ncm-dbt-05 584411 500 224 40 236 +134.15 ± 12.27 0 2 66 178 4 +315.35 ± 42.24
469736 ncm-dbt-04 566336 500 227 45 228 +132.54 ± 12.71 0 3 67 175 5 +306.84 ± 41.99
469735 ncm-dbt-03 584958 500 227 46 227 +131.74 ± 13.12 0 4 67 173 6 +301.33 ± 42.04
469734 ncm-dbt-01 580075 500 214 34 252 +130.94 ± 12.17 0 3 66 179 2 +309.64 ± 42.33
469733 ncm-dbt-02 586181 500 222 34 244 +137.37 ± 12.56 0 2 64 178 6 +321.19 ± 42.95
469732 ncm-dbt-04 567126 500 211 42 247 +122.24 ± 12.57 0 5 72 172 1 +282.94 ± 40.5
469731 ncm-dbt-05 581652 500 222 47 231 +126.97 ± 12.08 0 3 70 176 1 +298.62 ± 41.01

Commit

Commit ID 24abab9f6c517ebf02b232e2adf110f2b62355c4
Author anematode
Date 2026-05-19 16:39:06 UTC
Universal builds for Android armv8 and compatibility with older compilers - We add a new path for supporting universal builds without #embed . `xxd` causes the compiler to run out of memory, so instead we embed it as a string literal created at compile time. - This file is created in `net.sh`, and only if `--embed-dir` isn't supported + we are doing a universal build. - This was necessary because Android NDK seems to not support embed, idk why - A couple other Makefile tweaks were necessary for the Android path. - While we're at it, remove the non-universal arm64 windows and android binaries. closes https://github.com/official-stockfish/Stockfish/pull/6827 No functional change
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