Dev Builds » 20260307-2112

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 06:39:37 583444 4000 1737 387 1876 +122.04 ± 4.55 0 41 588 1351 20 +278.55 ± 14.04
ncm-dbt-02 06:41:23 584613 4000 1713 364 1923 +121.94 ± 4.46 0 26 623 1327 24 +277.0 ± 13.57
ncm-dbt-03 06:40:34 585111 4000 1735 385 1880 +122.04 ± 4.55 0 33 612 1327 28 +276.07 ± 13.73
ncm-dbt-04 06:40:24 566377 4000 1759 339 1902 +128.95 ± 4.53 0 27 563 1373 37 +295.61 ± 14.32
ncm-dbt-05 06:41:35 579578 4000 1760 387 1853 +124.3 ± 4.54 0 32 592 1347 29 +282.94 ± 13.97
20000 8704 1862 9434 +123.85 ± 2.02 0 159 2978 6725 138 +281.93 ± 6.22

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
458690 ncm-dbt-05 577807 500 218 54 228 +118.33 ± 12.81 0 6 75 168 1 +270.57 ± 39.67
458689 ncm-dbt-02 582903 500 214 44 242 +123.02 ± 12.93 0 3 79 163 5 +275.45 ± 38.39
458688 ncm-dbt-03 583866 500 214 47 239 +120.67 ± 12.97 0 3 82 160 5 +268.17 ± 37.61
458687 ncm-dbt-04 565666 500 222 47 231 +126.97 ± 12.28 0 1 77 168 4 +290.66 ± 38.7
458686 ncm-dbt-01 580157 500 216 44 240 +124.6 ± 13.45 0 8 65 174 3 +285.49 ± 42.7
458685 ncm-dbt-05 578836 500 220 37 243 +133.34 ± 11.67 0 1 67 180 2 +318.25 ± 41.77
458684 ncm-dbt-02 585674 500 209 50 241 +114.45 ± 12.67 0 3 88 156 3 +254.16 ± 36.15
458683 ncm-dbt-04 568037 500 223 46 231 +128.55 ± 13.73 0 4 74 163 9 +282.94 ± 39.86
458682 ncm-dbt-03 585253 500 228 53 219 +126.97 ± 12.28 0 2 74 171 3 +293.29 ± 39.69
458681 ncm-dbt-01 584369 500 210 52 238 +113.68 ± 13.04 0 7 79 163 1 +256.44 ± 38.62
458680 ncm-dbt-02 584076 500 217 37 246 +130.94 ± 12.37 0 2 70 174 4 +304.07 ± 40.91
458679 ncm-dbt-05 575802 500 218 51 231 +120.67 ± 13.15 0 6 74 167 3 +273.0 ± 39.95
458678 ncm-dbt-04 567878 500 218 44 238 +126.17 ± 12.1 0 2 74 172 2 +293.29 ± 39.69
458677 ncm-dbt-03 585717 500 226 46 228 +130.94 ± 12.37 0 2 70 174 4 +304.07 ± 40.91
458676 ncm-dbt-01 583656 500 221 41 238 +130.94 ± 12.76 0 4 66 176 4 +304.07 ± 42.38
458675 ncm-dbt-02 585885 500 199 41 260 +113.68 ± 12.5 0 3 88 157 2 +254.16 ± 36.15
458674 ncm-dbt-03 581527 500 215 52 233 +117.55 ± 13.0 0 5 80 162 3 +263.42 ± 38.27
458673 ncm-dbt-04 565705 500 218 37 245 +131.74 ± 12.14 0 2 68 177 3 +309.64 ± 41.56
458672 ncm-dbt-05 581527 500 213 52 235 +116.0 ± 12.84 0 4 84 159 3 +258.75 ± 37.2
458671 ncm-dbt-01 582485 500 218 43 239 +126.97 ± 12.85 0 5 68 174 3 +293.29 ± 41.75
458670 ncm-dbt-01 584916 500 221 50 229 +123.81 ± 12.16 0 3 74 172 1 +288.06 ± 39.79
458669 ncm-dbt-04 565784 500 220 37 243 +133.34 ± 11.88 0 2 65 181 2 +318.25 ± 42.59
458668 ncm-dbt-02 585464 500 217 49 234 +121.45 ± 12.4 0 3 78 167 2 +277.93 ± 38.66
458667 ncm-dbt-03 585885 500 214 41 245 +125.38 ± 13.25 0 5 72 168 5 +282.94 ± 40.5
458666 ncm-dbt-05 578054 500 222 41 237 +131.74 ± 12.93 0 4 66 175 5 +304.07 ± 42.38
458665 ncm-dbt-01 583950 500 219 69 212 +107.54 ± 13.4 0 7 89 151 3 +234.38 ± 36.22
458664 ncm-dbt-02 583489 500 217 46 237 +123.81 ± 12.73 0 3 77 166 4 +280.42 ± 38.93
458663 ncm-dbt-04 564096 500 217 45 238 +124.6 ± 13.09 0 5 72 169 4 +282.94 ± 40.5
458662 ncm-dbt-03 588089 500 213 44 243 +122.24 ± 13.66 0 8 69 169 4 +275.45 ± 41.43
458661 ncm-dbt-05 579166 500 225 46 229 +130.14 ± 12.97 0 4 68 173 5 +298.62 ± 41.71
458660 ncm-dbt-04 567244 500 217 42 241 +126.97 ± 13.76 0 8 64 173 5 +288.06 ± 43.03
458659 ncm-dbt-02 583782 500 218 41 241 +128.55 ± 12.24 0 4 66 179 1 +304.07 ± 42.38
458658 ncm-dbt-05 581111 500 221 63 216 +113.68 ± 13.38 0 5 87 153 5 +247.41 ± 36.56
458657 ncm-dbt-01 583782 500 220 32 248 +137.37 ± 11.51 0 1 62 185 2 +333.32 ± 43.57
458656 ncm-dbt-03 584159 500 206 46 248 +115.22 ± 12.85 0 5 82 161 2 +258.75 ± 37.76
458655 ncm-dbt-04 566612 500 224 41 235 +133.34 ± 13.26 0 3 69 170 8 +301.33 ± 41.33
458654 ncm-dbt-01 584243 500 212 56 232 +112.14 ± 13.22 0 6 85 156 3 +247.41 ± 37.09
458653 ncm-dbt-05 584327 500 223 43 234 +130.94 ± 12.56 0 2 71 172 5 +301.33 ± 40.6
458652 ncm-dbt-02 585632 500 222 56 222 +119.89 ± 12.98 0 5 77 165 3 +270.57 ± 39.07
458651 ncm-dbt-03 586393 500 219 56 225 +117.55 ± 12.46 0 3 83 162 2 +265.78 ± 37.35

Commit

Commit ID 868b63d421ca005876cff93f63a9626e0b0262e9
Author Shawn Xu
Date 2026-03-07 21:12:51 UTC
Update main network to nn-9a0cc2a62c52.nnue network with new hash encoding. closes https://github.com/official-stockfish/Stockfish/pull/6651 no functional change
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