Dev Builds » 20250602-1928

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 06:44:38 576310 4000 1636 458 1906 +105.44 ± 4.72 3 56 714 1214 13 +232.26 ± 12.71
ncm-dbt-02 06:45:05 585809 3990 1633 446 1911 +106.58 ± 4.82 0 71 686 1218 20 +232.77 ± 13.0
ncm-dbt-03 06:44:24 583895 4000 1625 471 1904 +103.16 ± 4.76 2 62 732 1188 16 +224.97 ± 12.55
ncm-dbt-04 06:45:28 568382 4016 1658 480 1878 +105.0 ± 4.83 1 74 698 1216 19 +228.96 ± 12.89
ncm-dbt-05 06:46:15 581479 3994 1647 518 1829 +100.96 ± 4.81 0 72 743 1163 19 +217.77 ± 12.46
20000 8199 2373 9428 +104.23 ± 2.14 6 335 3573 5999 87 +227.3 ± 5.68

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
416771 ncm-dbt-04 567522 16 5 1 10 +88.68 ± 65.24 0 0 4 4 0 +190.76 ± 189.19
416770 ncm-dbt-02 586097 490 194 51 245 +104.43 ± 14.54 0 13 79 150 3 +225.71 ± 38.58
416769 ncm-dbt-05 582611 494 208 62 224 +105.84 ± 14.15 0 9 88 145 5 +225.41 ± 36.5
416768 ncm-dbt-01 576047 500 211 56 233 +111.37 ± 12.33 0 4 87 159 0 +251.89 ± 36.48
416767 ncm-dbt-03 581818 500 208 64 228 +102.97 ± 13.04 0 6 96 146 2 +223.94 ± 34.66
416766 ncm-dbt-04 566888 500 199 62 239 +97.69 ± 13.97 0 14 85 151 0 +213.85 ± 37.18
416765 ncm-dbt-02 587282 500 197 51 252 +104.49 ± 12.88 0 5 96 147 2 +228.08 ± 34.59
416764 ncm-dbt-05 584790 500 212 66 222 +104.49 ± 13.55 0 9 88 151 2 +228.08 ± 36.51
416763 ncm-dbt-01 575639 500 202 57 241 +103.73 ± 13.55 1 6 92 149 2 +228.08 ± 35.56
416762 ncm-dbt-03 584748 500 203 60 237 +102.22 ± 13.54 0 8 94 145 3 +219.87 ± 35.19
416761 ncm-dbt-04 568792 500 207 59 234 +106.01 ± 13.72 0 8 90 148 4 +228.08 ± 36.04
416760 ncm-dbt-02 585885 500 198 50 252 +106.01 ± 12.71 0 5 93 151 1 +234.38 ± 35.22
416759 ncm-dbt-03 582736 500 208 54 238 +110.6 ± 13.39 1 5 85 157 2 +247.41 ± 37.09
416758 ncm-dbt-05 582736 500 195 66 239 +91.71 ± 14.63 0 15 95 136 4 +190.85 ± 35.14
416757 ncm-dbt-01 573729 500 201 56 243 +103.73 ± 13.55 1 7 89 152 1 +230.16 ± 36.26
416756 ncm-dbt-04 566809 500 207 60 233 +105.25 ± 13.88 1 8 86 153 2 +232.26 ± 36.96
416755 ncm-dbt-02 587155 500 206 53 241 +109.83 ± 13.73 0 9 82 156 3 +240.82 ± 37.9
416754 ncm-dbt-03 584369 500 202 74 224 +90.97 ± 13.87 1 11 97 141 0 +198.34 ± 34.72
416753 ncm-dbt-01 578712 500 194 59 247 +96.19 ± 13.16 0 9 97 144 0 +209.91 ± 34.63
416752 ncm-dbt-05 580904 500 210 65 225 +103.73 ± 12.35 0 3 100 146 1 +228.08 ± 33.59
416751 ncm-dbt-04 569789 500 204 63 233 +100.7 ± 14.01 0 10 93 143 4 +213.85 ± 35.47
416750 ncm-dbt-02 582652 500 214 64 222 +107.54 ± 14.21 0 12 79 156 3 +234.38 ± 38.61
416749 ncm-dbt-03 582485 500 204 48 248 +112.14 ± 13.22 0 7 82 159 2 +249.64 ± 37.86
416748 ncm-dbt-05 577602 500 213 64 223 +106.77 ± 13.06 0 7 88 154 1 +236.51 ± 36.44
416747 ncm-dbt-01 575924 500 209 49 242 +115.22 ± 13.03 0 6 80 162 2 +258.75 ± 38.32
416746 ncm-dbt-04 572759 500 221 61 218 +115.22 ± 13.55 0 7 80 159 4 +254.16 ± 38.36
416745 ncm-dbt-02 585548 500 211 62 227 +106.77 ± 13.89 0 8 90 147 5 +228.08 ± 36.04
416744 ncm-dbt-05 584117 500 216 64 220 +109.07 ± 12.88 0 6 87 156 1 +243.0 ± 36.62
416743 ncm-dbt-03 586816 500 200 50 250 +107.54 ± 13.4 0 7 89 151 3 +234.38 ± 36.22
416742 ncm-dbt-01 573284 500 200 68 232 +93.95 ± 13.45 1 7 102 139 1 +204.07 ± 33.61
416741 ncm-dbt-04 566572 500 209 52 239 +112.91 ± 13.39 0 9 76 164 1 +254.16 ± 39.42
416740 ncm-dbt-02 585169 500 202 62 236 +99.95 ± 13.84 0 13 84 153 0 +219.87 ± 37.42
416739 ncm-dbt-03 583740 500 202 63 235 +99.2 ± 13.83 0 11 91 146 2 +213.85 ± 35.9
416738 ncm-dbt-05 578836 500 201 65 234 +96.94 ± 14.42 0 13 92 141 4 +204.07 ± 35.72
416737 ncm-dbt-01 576905 500 207 55 238 +109.07 ± 13.4 0 6 90 150 4 +236.51 ± 35.94
416736 ncm-dbt-04 567839 500 202 61 237 +100.7 ± 13.69 0 10 91 147 2 +217.85 ± 35.89
416735 ncm-dbt-02 586689 500 211 53 236 +113.68 ± 13.21 0 6 83 158 3 +251.89 ± 37.57
416734 ncm-dbt-01 580240 500 212 58 230 +110.6 ± 14.06 0 11 77 159 3 +243.0 ± 39.13
416733 ncm-dbt-05 580240 500 192 66 242 +89.48 ± 13.38 0 10 105 134 1 +190.85 ± 33.16
416732 ncm-dbt-04 568474 500 204 61 235 +102.22 ± 13.37 0 8 93 147 2 +221.9 ± 35.4
416731 ncm-dbt-03 584453 500 198 58 244 +99.95 ± 13.19 0 7 98 143 2 +215.85 ± 34.33

Commit

Commit ID 29b0c07ac88d32cb879248eccd31cb6a2cac93c5
Author mstembera
Date 2025-06-02 19:28:18 UTC
Simplify Position::pieces() closes https://github.com/official-stockfish/Stockfish/pull/6104 No functional change
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