Dev Builds » 20210827-1941

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 06:52:03 584976 4000 672 1346 1982 -59.11 ± 5.03 6 843 971 179 1 -120.87 ± 10.88
ncm-dbt-02 06:52:49 586603 4000 688 1338 1974 -56.96 ± 5.2 12 836 943 208 1 -115.03 ± 11.08
ncm-dbt-03 06:53:09 587673 4000 661 1351 1988 -60.54 ± 5.12 10 857 948 183 2 -123.42 ± 11.03
ncm-dbt-04 06:53:53 570791 4002 653 1324 2025 -58.81 ± 5.12 13 836 962 189 1 -118.85 ± 10.95
ncm-dbt-05 06:53:53 584385 3998 666 1391 1941 -63.71 ± 5.08 9 880 940 167 3 -130.82 ± 11.07
20000 3340 6750 9910 -59.82 ± 2.29 50 4252 4764 926 8 -121.77 ± 4.92

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
406172 ncm-dbt-04 570108 2 0 1 1 -189.7 ± 55.98 0 1 0 0 0 -1129.65 ± 376.02
406171 ncm-dbt-05 580447 498 75 174 249 -70.0 ± 13.34 1 110 125 13 0 -144.54 ± 30.02
406170 ncm-dbt-03 589839 500 88 174 238 -60.36 ± 14.62 2 106 118 24 0 -121.46 ± 31.39
406169 ncm-dbt-04 568236 500 91 173 236 -57.5 ± 14.22 1 103 123 23 0 -116.78 ± 30.65
406168 ncm-dbt-02 585337 500 92 163 245 -49.67 ± 14.24 1 95 128 26 0 -99.95 ± 30.0
406167 ncm-dbt-01 584958 500 87 177 236 -63.23 ± 13.63 2 102 130 16 0 -127.76 ± 29.43
406166 ncm-dbt-05 582694 500 81 172 247 -63.95 ± 13.66 0 109 123 18 0 -132.54 ± 30.53
406165 ncm-dbt-03 587155 500 88 166 246 -54.65 ± 14.49 0 105 118 27 0 -112.14 ± 31.42
406164 ncm-dbt-04 571752 500 79 159 262 -56.07 ± 14.43 2 100 124 24 0 -112.14 ± 30.53
406163 ncm-dbt-02 586604 500 85 160 255 -52.51 ± 14.25 0 101 123 26 0 -107.54 ± 30.7
406162 ncm-dbt-01 587452 500 77 174 249 -68.27 ± 14.4 0 119 109 22 0 -142.26 ± 32.74
406161 ncm-dbt-03 585169 500 79 167 254 -61.79 ± 13.99 1 106 123 20 0 -126.18 ± 30.59
406160 ncm-dbt-05 581402 500 79 185 236 -74.79 ± 14.34 3 116 116 14 1 -153.86 ± 31.51
406159 ncm-dbt-04 570469 500 73 159 268 -60.36 ± 14.21 1 106 121 22 0 -123.02 ± 30.92
406158 ncm-dbt-02 589240 500 72 167 261 -66.82 ± 15.68 2 120 100 27 1 -137.37 ± 34.12
406157 ncm-dbt-01 584958 500 75 175 250 -70.43 ± 14.34 1 118 111 20 0 -145.54 ± 32.41
406156 ncm-dbt-03 586477 500 81 166 253 -59.64 ± 14.59 1 107 119 22 1 -123.02 ± 31.23
406155 ncm-dbt-04 571391 500 73 165 262 -64.66 ± 14.26 2 108 120 20 0 -130.94 ± 31.03
406154 ncm-dbt-05 585548 500 79 169 252 -63.23 ± 14.61 0 115 110 25 0 -130.94 ± 32.59
406153 ncm-dbt-02 584537 500 85 168 247 -58.21 ± 15.32 3 106 112 29 0 -115.23 ± 32.29
406152 ncm-dbt-01 583405 500 90 163 247 -51.09 ± 14.85 0 103 118 28 1 -106.01 ± 31.43
406151 ncm-dbt-03 586350 500 101 167 232 -46.13 ± 14.58 0 96 125 28 1 -95.44 ± 30.46
406150 ncm-dbt-04 570629 500 86 169 245 -58.21 ± 14.39 0 107 120 22 1 -121.46 ± 31.09
406149 ncm-dbt-05 584117 500 94 182 224 -61.79 ± 14.68 2 108 116 24 0 -124.6 ± 31.69
406148 ncm-dbt-02 588856 500 91 176 233 -59.64 ± 14.73 2 106 117 25 0 -119.89 ± 31.55
406147 ncm-dbt-01 585759 500 85 161 254 -53.22 ± 13.87 0 99 128 23 0 -109.07 ± 29.94
406146 ncm-dbt-03 588984 500 78 167 255 -62.51 ± 14.31 3 103 124 20 0 -124.6 ± 30.44
406145 ncm-dbt-05 587749 500 82 175 243 -65.38 ± 14.97 3 111 112 24 0 -130.94 ± 32.29
406144 ncm-dbt-01 585126 500 85 167 248 -57.5 ± 14.36 1 104 121 24 0 -116.78 ± 30.96
406143 ncm-dbt-04 570228 500 75 162 263 -61.07 ± 14.79 2 108 115 25 0 -123.02 ± 31.84
406142 ncm-dbt-02 586435 500 89 165 246 -53.22 ± 14.82 1 103 117 29 0 -107.54 ± 31.57
406141 ncm-dbt-05 586562 500 92 175 233 -58.21 ± 14.53 0 108 118 23 1 -121.46 ± 31.39
406140 ncm-dbt-03 589625 500 62 166 272 -73.33 ± 14.44 2 119 110 19 0 -150.51 ± 32.56
406139 ncm-dbt-01 584411 500 87 178 235 -63.95 ± 13.66 0 109 123 18 0 -132.54 ± 30.53
406138 ncm-dbt-02 584874 500 85 172 243 -61.07 ± 14.52 1 109 116 24 0 -124.6 ± 31.69
406137 ncm-dbt-04 572235 500 80 165 255 -59.64 ± 15.12 3 106 114 27 0 -118.33 ± 32.0
406136 ncm-dbt-01 583740 500 86 151 263 -45.42 ± 14.41 2 89 131 28 0 -89.48 ± 29.62
406135 ncm-dbt-05 586562 500 84 159 257 -52.51 ± 14.66 0 103 120 26 1 -109.07 ± 31.14
406134 ncm-dbt-03 587792 500 84 178 238 -66.1 ± 14.59 1 115 111 23 0 -135.76 ± 32.43
406133 ncm-dbt-02 586943 500 89 167 244 -54.64 ± 14.08 2 96 130 22 0 -109.07 ± 29.63
406132 ncm-dbt-04 572074 500 96 171 233 -52.51 ± 14.52 2 97 125 26 0 -104.49 ± 30.42

Commit

Commit ID ad357e147a1b8481a04761d726ce1db14115a68f
Author VoyagerOne
Date 2021-08-27 19:41:32 UTC
CMH Pruning Tweak Tweak pruning formula by adding up CMH values. STC: LLR: 2.94 (-2.94,2.94) <-0.50,2.50> Total: 14608 W: 3837 L: 3641 D: 7130 Ptnml(0-2): 27, 1681, 3723, 1815, 58 https://tests.stockfishchess.org/tests/view/612792f362d20cf82b5ad156 LTC: LLR: 2.94 (-2.94,2.94) <0.50,3.50> Total: 53520 W: 13580 L: 13276 D: 26664 Ptnml(0-2): 28, 5610, 15183, 5908, 31 https://tests.stockfishchess.org/tests/view/6127d27062d20cf82b5ad191 closes https://github.com/official-stockfish/Stockfish/pull/3682 Bench: 5186641
Copyright 2011–2025 Next Chess Move LLC