Dev Builds » 20210726-0548

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 06:55:04 583253 4008 469 1520 2019 -93.29 ± 4.87 22 1092 805 85 0 -197.15 ± 11.96
ncm-dbt-02 06:56:16 585013 3998 510 1524 1964 -90.08 ± 5.06 25 1075 788 111 0 -188.42 ± 12.13
ncm-dbt-03 06:55:53 583833 4000 515 1482 2003 -85.69 ± 5.03 19 1047 816 118 0 -179.0 ± 11.91
ncm-dbt-04 06:55:44 566957 3996 462 1522 2012 -94.42 ± 5.13 28 1117 741 111 1 -198.82 ± 12.52
ncm-dbt-05 06:57:02 581385 3998 517 1502 1979 -87.4 ± 5.12 28 1049 802 120 0 -181.13 ± 12.02
20000 2473 7550 9977 -90.17 ± 2.26 122 5380 3952 545 1 -188.82 ± 5.41

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
436869 ncm-dbt-01 582360 8 2 4 2 -88.62 ± 93.84 0 2 2 0 0 -190.67 ± 458.56
436868 ncm-dbt-04 564448 496 70 188 238 -84.27 ± 14.98 1 136 92 18 1 -179.82 ± 35.68
436867 ncm-dbt-02 584832 498 58 196 244 -98.86 ± 14.02 3 143 92 11 0 -210.97 ± 35.69
436866 ncm-dbt-05 580945 498 70 179 249 -77.29 ± 13.73 1 121 113 14 0 -161.38 ± 31.95
436865 ncm-dbt-03 581236 500 66 185 249 -84.3 ± 14.03 4 123 111 12 0 -172.78 ± 32.21
436864 ncm-dbt-01 583070 500 62 189 249 -90.22 ± 13.7 3 131 106 10 0 -189.0 ± 32.98
436863 ncm-dbt-02 584285 500 69 200 231 -93.2 ± 14.06 4 134 101 11 0 -194.57 ± 33.94
436862 ncm-dbt-04 569749 500 57 183 260 -89.48 ± 15.16 4 137 90 19 0 -185.33 ± 36.06
436861 ncm-dbt-03 584832 500 64 185 251 -85.78 ± 13.92 3 127 108 12 0 -178.11 ± 32.72
436860 ncm-dbt-05 578712 500 67 190 243 -87.26 ± 13.95 3 129 106 12 0 -181.7 ± 33.07
436859 ncm-dbt-01 585211 500 66 190 244 -88.0 ± 14.12 1 137 97 15 0 -187.16 ± 34.76
436858 ncm-dbt-02 583698 500 75 184 241 -76.97 ± 14.27 4 116 115 15 0 -155.54 ± 31.67
436857 ncm-dbt-04 566770 500 62 191 247 -91.71 ± 14.78 4 137 93 16 0 -190.85 ± 35.52
436856 ncm-dbt-03 586266 500 56 189 255 -94.69 ± 14.69 3 143 88 16 0 -200.24 ± 36.52
436855 ncm-dbt-01 584159 500 53 183 264 -92.45 ± 12.61 0 136 108 6 0 -200.24 ± 32.37
436854 ncm-dbt-05 581319 500 60 198 242 -98.44 ± 13.82 3 142 95 10 0 -209.91 ± 35.06
436853 ncm-dbt-03 584958 500 60 177 263 -82.83 ± 14.29 3 126 106 15 0 -171.02 ± 33.15
436852 ncm-dbt-04 564919 500 49 181 270 -93.95 ± 14.67 2 145 86 17 0 -200.24 ± 36.91
436851 ncm-dbt-02 586435 500 52 195 253 -102.22 ± 14.93 5 148 82 15 0 -215.85 ± 37.82
436850 ncm-dbt-05 581652 500 71 195 234 -88.0 ± 14.99 4 134 94 18 0 -181.7 ± 35.31
436849 ncm-dbt-01 584034 500 64 182 254 -83.57 ± 14.16 3 126 107 14 0 -172.78 ± 32.96
436848 ncm-dbt-04 566691 500 57 202 241 -103.73 ± 14.34 4 149 85 12 0 -221.9 ± 37.21
436847 ncm-dbt-05 578342 500 69 187 244 -83.57 ± 14.74 3 130 99 18 0 -172.78 ± 34.4
436846 ncm-dbt-03 581693 500 68 176 256 -76.25 ± 13.36 0 121 116 13 0 -160.64 ± 31.43
436845 ncm-dbt-02 583070 500 64 194 242 -92.45 ± 14.5 5 133 99 13 0 -190.85 ± 34.36
436844 ncm-dbt-01 582444 500 68 194 238 -89.48 ± 14.15 4 130 104 12 0 -185.33 ± 33.42
436843 ncm-dbt-02 586139 500 63 190 247 -90.22 ± 14.46 3 136 96 15 0 -189.0 ± 34.95
436842 ncm-dbt-01 583740 500 52 198 250 -104.49 ± 13.88 5 144 93 8 0 -221.9 ± 35.4
436841 ncm-dbt-04 567561 500 58 189 253 -93.2 ± 14.51 7 128 104 11 0 -189.0 ± 33.39
436840 ncm-dbt-03 583070 500 80 198 222 -83.57 ± 15.43 4 132 92 22 0 -171.02 ± 35.61
436839 ncm-dbt-05 584916 500 59 186 255 -90.22 ± 14.75 5 132 98 15 0 -185.33 ± 34.57
436838 ncm-dbt-01 581777 500 50 193 257 -102.22 ± 14.63 5 146 86 13 0 -215.85 ± 36.98
436837 ncm-dbt-02 585928 500 69 185 246 -82.1 ± 14.56 1 133 97 19 0 -172.78 ± 34.76
436836 ncm-dbt-04 566691 500 61 192 247 -93.2 ± 14.06 4 134 101 11 0 -194.57 ± 33.94
436835 ncm-dbt-05 584748 500 60 190 250 -92.45 ± 14.65 5 134 97 14 0 -190.85 ± 34.75
436834 ncm-dbt-03 583950 500 60 181 259 -85.78 ± 13.77 1 132 104 13 0 -181.7 ± 33.45
436833 ncm-dbt-01 582485 500 52 187 261 -96.19 ± 12.99 1 140 102 7 0 -207.95 ± 33.55
436832 ncm-dbt-04 568832 500 48 196 256 -106.01 ± 13.22 2 151 90 7 0 -232.26 ± 35.99
436831 ncm-dbt-02 585717 500 60 180 260 -85.04 ± 13.44 0 132 106 12 0 -181.7 ± 33.07
436830 ncm-dbt-03 584664 500 61 191 248 -92.45 ± 14.2 1 143 91 15 0 -198.34 ± 35.92
436829 ncm-dbt-05 580447 500 61 177 262 -82.1 ± 14.98 4 127 100 19 0 -167.53 ± 34.22

Commit

Commit ID 910d26b5c30bb68845e032a8f2aac82f19c96262
Author Giacomo Lorenzetti
Date 2021-07-26 05:48:58 UTC
Simplification in LMR This commit removes the `!captureOrPromotion` condition from ttCapture reduction and from good/bad history reduction (similar to #3619). passed STC: https://tests.stockfishchess.org/tests/view/60fc734ad8a6b65b2f3a7922 LLR: 2.97 (-2.94,2.94) <-2.50,0.50> Total: 48680 W: 3855 L: 3776 D: 41049 Ptnml(0-2): 118, 3145, 17744, 3206, 127 passed LTC: https://tests.stockfishchess.org/tests/view/60fce7d5d8a6b65b2f3a794c LLR: 2.93 (-2.94,2.94) <-2.50,0.50> Total: 86528 W: 2471 L: 2450 D: 81607 Ptnml(0-2): 28, 2203, 38777, 2232, 24 closes https://github.com/official-stockfish/Stockfish/pull/3629 Bench: 4951406
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