Dev Builds » 20201223-1917

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 06:48:16 582230 4000 323 1813 1864 -135.96 ± 5.02 97 1332 535 36 0 -298.96 ± 14.73
ncm-dbt-02 06:49:24 587076 4004 347 1848 1809 -136.92 ± 5.18 110 1324 527 39 2 -298.49 ± 14.85
ncm-dbt-03 06:47:52 586503 4000 293 1858 1849 -143.59 ± 4.94 99 1399 471 30 1 -325.29 ± 15.71
ncm-dbt-04 06:49:37 567639 4010 286 1837 1887 -141.76 ± 4.75 88 1394 504 19 0 -322.43 ± 15.15
ncm-dbt-05 06:49:55 583576 3986 320 1817 1849 -137.2 ± 4.88 79 1375 503 36 0 -309.29 ± 15.2
20000 1569 9173 9258 -139.08 ± 2.22 473 6824 2540 160 3 -310.63 ± 6.75

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
442793 ncm-dbt-02 586858 4 1 2 1 -88.51 ± 137.63 0 1 1 0 0 -190.5 ± 634.21
442792 ncm-dbt-04 568912 10 0 4 6 -147.0 ± 148.24 1 2 2 0 0 -240.65 ± 570.11
442791 ncm-dbt-05 583950 486 42 223 221 -135.93 ± 15.29 12 166 56 9 0 -298.27 ± 45.88
442790 ncm-dbt-04 567640 500 33 223 244 -138.99 ± 13.67 11 171 65 3 0 -312.48 ± 42.67
442789 ncm-dbt-03 587452 500 48 236 216 -137.37 ± 14.95 14 167 62 7 0 -298.62 ± 43.77
442788 ncm-dbt-01 582444 500 36 229 235 -141.44 ± 13.59 12 171 65 2 0 -318.25 ± 42.59
442787 ncm-dbt-02 588558 500 35 237 228 -148.85 ± 13.7 13 179 55 3 0 -342.85 ± 46.64
442786 ncm-dbt-05 577766 500 40 224 236 -134.15 ± 14.15 11 167 67 5 0 -295.94 ± 42.08
442785 ncm-dbt-02 585759 500 47 236 217 -138.18 ± 16.23 19 160 63 7 1 -290.66 ± 43.37
442784 ncm-dbt-04 567284 500 42 241 217 -146.36 ± 15.07 19 165 62 4 0 -315.35 ± 43.81
442783 ncm-dbt-03 583112 500 31 232 237 -148.02 ± 12.53 9 184 56 1 0 -352.8 ± 46.04
442782 ncm-dbt-01 583196 500 35 223 242 -137.37 ± 14.25 11 172 61 6 0 -306.84 ± 44.17
442781 ncm-dbt-05 583321 500 39 225 236 -135.76 ± 13.01 8 172 68 2 0 -309.64 ± 41.56
442780 ncm-dbt-02 588430 500 49 239 212 -138.99 ± 14.57 15 164 67 4 0 -301.33 ± 42.04
442779 ncm-dbt-03 588217 500 43 238 219 -143.07 ± 13.73 14 168 67 1 0 -318.25 ± 41.77
442778 ncm-dbt-01 581444 500 31 215 254 -134.15 ± 14.33 12 165 68 5 0 -293.29 ± 41.75
442777 ncm-dbt-04 567284 500 35 221 244 -135.75 ± 12.21 6 174 70 0 0 -315.34 ± 40.62
442776 ncm-dbt-05 584117 500 44 230 226 -135.76 ± 13.01 7 175 65 3 0 -312.48 ± 42.67
442775 ncm-dbt-02 586350 500 42 218 240 -127.76 ± 14.77 14 153 78 5 0 -268.17 ± 38.8
442774 ncm-dbt-03 584706 500 31 217 252 -135.76 ± 14.81 12 170 60 8 0 -298.62 ± 44.44
442773 ncm-dbt-04 565784 500 42 232 226 -138.99 ± 13.48 9 176 61 4 0 -318.25 ± 44.18
442772 ncm-dbt-01 584537 500 44 223 233 -130.14 ± 13.7 8 168 69 5 0 -290.66 ± 41.43
442771 ncm-dbt-05 586308 500 44 226 230 -132.54 ± 13.65 9 168 69 4 0 -295.94 ± 41.39
442770 ncm-dbt-02 587962 500 38 228 234 -138.99 ± 13.1 7 180 59 4 0 -324.17 ± 44.97
442769 ncm-dbt-03 585759 500 37 225 238 -137.37 ± 13.9 8 178 59 4 1 -318.25 ± 44.96
442768 ncm-dbt-04 567244 500 25 234 241 -154.7 ± 13.03 12 187 49 2 0 -370.41 ± 49.56
442767 ncm-dbt-01 574744 500 50 229 221 -130.14 ± 15.06 14 158 71 7 0 -275.45 ± 40.84
442766 ncm-dbt-05 584622 500 34 240 226 -152.18 ± 14.52 14 185 44 7 0 -352.8 ± 51.86
442765 ncm-dbt-04 570829 500 31 237 232 -152.18 ± 13.56 14 180 54 2 0 -352.8 ± 47.05
442764 ncm-dbt-03 587962 500 35 232 233 -144.71 ± 13.67 12 176 59 3 0 -330.23 ± 44.94
442763 ncm-dbt-02 585632 500 39 236 225 -144.71 ± 14.59 17 166 64 3 0 -315.35 ± 43.03
442762 ncm-dbt-01 583908 500 42 230 228 -137.37 ± 14.78 16 160 70 4 0 -293.29 ± 41.07
442761 ncm-dbt-05 583740 500 36 227 237 -139.81 ± 13.64 10 175 61 4 0 -318.25 ± 44.18
442760 ncm-dbt-01 582527 500 50 235 215 -134.95 ± 14.48 12 167 65 6 0 -295.94 ± 42.75
442759 ncm-dbt-04 566414 500 44 223 233 -130.14 ± 13.16 7 168 72 3 0 -293.29 ± 40.39
442758 ncm-dbt-03 587877 500 28 242 230 -158.93 ± 14.04 17 183 47 3 0 -370.41 ± 50.67
442757 ncm-dbt-02 586181 500 48 228 224 -130.94 ± 14.72 12 162 71 4 1 -285.49 ± 40.81
442756 ncm-dbt-03 586943 500 40 236 224 -143.89 ± 13.89 13 173 61 3 0 -324.17 ± 44.15
442755 ncm-dbt-02 587962 500 48 224 228 -127.76 ± 15.25 13 159 69 9 0 -270.57 ± 41.4
442754 ncm-dbt-05 584790 500 41 222 237 -131.74 ± 13.12 8 167 73 2 0 -295.94 ± 39.99
442753 ncm-dbt-01 585042 500 35 229 236 -142.25 ± 13.37 12 171 66 1 0 -321.19 ± 42.12
442752 ncm-dbt-04 567363 500 34 222 244 -137.37 ± 12.96 9 171 69 1 0 -312.48 ± 41.11

Commit

Commit ID 45b05328b6d10b1f72786a59d78ae95c17ec40dd
Author FauziAkram
Date 2020-12-23 19:17:57 UTC
Tweak the formulas for unsafeSquares We give more bonus for a special case: If there are some enemy squares occupied or attacked by the enemy on the passed pawn span, but if they are all attacked by our pawn, use new intermediate factor 30. The main credit goes to Rocky for the idea, with additional tuning and tests. Passed STC: LLR: 2.95 (-2.94,2.94) {-0.25,1.25} Total: 96464 W: 19233 L: 18834 D: 58397 Ptnml(0-2): 1683, 11327, 21950, 11452, 1820 https://tests.stockfishchess.org/tests/view/5fdd21ab3932f79192d39357 Passed LTC: LLR: 2.94 (-2.94,2.94) {0.25,1.25} Total: 81320 W: 10784 L: 10352 D: 60184 Ptnml(0-2): 602, 7524, 24044, 7820, 670 https://tests.stockfishchess.org/tests/view/5fddec983932f79192d393a4 closes https://github.com/official-stockfish/Stockfish/pull/3268 Bench: 4338972
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