Dev Builds » 20211231-0644

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 06:55:47 578857 3998 860 1171 1967 -27.08 ± 5.24 8 620 1049 319 3 -53.61 ± 10.49
ncm-dbt-02 06:54:27 580192 4002 896 1163 1943 -23.21 ± 5.24 9 589 1069 328 6 -46.11 ± 10.38
ncm-dbt-03 06:55:34 580215 4004 894 1146 1964 -21.9 ± 5.17 3 586 1079 328 6 -44.5 ± 10.32
ncm-dbt-04 06:55:26 565064 4002 882 1144 1976 -22.78 ± 5.24 9 589 1061 339 3 -44.69 ± 10.42
ncm-dbt-05 06:55:24 578896 3994 932 1148 1914 -18.81 ± 5.06 2 550 1108 336 1 -37.55 ± 10.15
20000 4464 5772 9764 -22.75 ± 2.32 31 2934 5366 1650 19 -45.28 ± 4.63

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
380004 ncm-dbt-02 585885 30 8 8 14 -0.02 ± 80.02 0 5 6 3 1 -23.2 ± 144.14
380003 ncm-dbt-01 584706 32 4 8 20 -43.63 ± 65.67 1 4 9 2 0 -65.92 ± 116.56
380002 ncm-dbt-05 585084 32 4 10 18 -65.9 ± 69.91 1 6 7 2 0 -112.33 ± 137.4
380001 ncm-dbt-03 588174 34 5 9 20 -41.06 ± 45.99 0 5 11 1 0 -83.31 ± 98.35
380000 ncm-dbt-04 571150 44 10 8 26 +15.8 ± 48.93 0 4 12 6 0 +31.67 ± 100.58
379999 ncm-dbt-02 586350 500 106 149 245 -29.95 ± 15.26 3 78 128 41 0 -56.07 ± 30.14
379998 ncm-dbt-03 588047 500 104 158 238 -37.67 ± 15.13 0 92 121 36 1 -77.71 ± 31.04
379997 ncm-dbt-05 585759 500 116 152 232 -25.06 ± 14.55 0 77 132 41 0 -50.38 ± 29.62
379996 ncm-dbt-01 583614 500 112 144 244 -22.26 ± 14.48 1 71 137 41 0 -43.3 ± 28.97
379995 ncm-dbt-04 574459 500 109 151 240 -29.25 ± 15.09 1 81 128 39 1 -58.93 ± 30.13
379994 ncm-dbt-02 586350 500 118 139 243 -14.6 ± 14.4 1 63 143 42 1 -29.25 ± 28.2
379993 ncm-dbt-03 587707 500 122 133 245 -7.65 ± 14.2 0 58 147 43 2 -18.08 ± 27.69
379992 ncm-dbt-05 585464 500 113 140 247 -18.78 ± 14.21 0 69 139 42 0 -37.67 ± 28.72
379991 ncm-dbt-01 585590 500 118 153 229 -24.36 ± 15.13 0 80 126 43 1 -50.38 ± 30.4
379990 ncm-dbt-04 570589 500 111 141 248 -20.87 ± 15.13 2 71 133 43 1 -40.48 ± 29.51
379989 ncm-dbt-05 531460 500 123 149 228 -18.08 ± 14.93 0 73 131 45 1 -37.67 ± 29.77
379988 ncm-dbt-02 527153 500 96 152 252 -39.08 ± 15.82 3 90 118 38 1 -76.25 ± 31.44
379987 ncm-dbt-03 529453 500 109 145 246 -25.06 ± 14.68 3 69 139 39 0 -46.13 ± 28.7
379986 ncm-dbt-01 531009 500 104 136 260 -22.27 ± 14.08 1 67 146 35 1 -44.72 ± 27.74
379985 ncm-dbt-04 504483 500 117 153 230 -25.06 ± 14.93 2 74 132 42 0 -47.55 ± 29.63
379984 ncm-dbt-05 583908 462 120 126 216 -4.51 ± 15.6 0 59 119 53 0 -9.03 ± 31.28
379983 ncm-dbt-04 573123 458 94 131 233 -28.13 ± 15.05 1 69 125 34 0 -55.08 ± 30.32
379982 ncm-dbt-02 586562 472 106 148 218 -31.0 ± 14.73 1 73 129 33 0 -60.98 ± 29.81
379981 ncm-dbt-01 586689 466 91 128 247 -27.64 ± 15.37 1 73 121 38 0 -54.11 ± 30.98
379980 ncm-dbt-03 585464 470 108 137 225 -21.47 ± 15.08 0 68 130 35 2 -46.1 ± 29.7
379979 ncm-dbt-02 588472 500 123 133 244 -6.95 ± 15.03 0 64 134 50 2 -16.69 ± 29.4
379978 ncm-dbt-05 581070 500 115 143 242 -19.48 ± 12.89 0 60 158 32 0 -39.08 ± 26.05
379977 ncm-dbt-04 572517 500 103 145 252 -29.25 ± 14.32 1 76 137 36 0 -57.5 ± 28.93
379976 ncm-dbt-01 584958 500 105 147 248 -29.25 ± 14.46 0 80 132 38 0 -58.93 ± 29.6
379975 ncm-dbt-03 583656 500 106 141 253 -24.36 ± 14.63 0 77 131 42 0 -48.96 ± 29.75
379974 ncm-dbt-02 586266 500 117 143 240 -18.08 ± 14.15 1 65 143 41 0 -34.86 ± 28.19
379973 ncm-dbt-04 571150 500 115 145 240 -20.87 ± 14.88 0 76 128 46 0 -41.89 ± 30.15
379972 ncm-dbt-05 586858 500 111 147 242 -25.06 ± 14.02 0 73 140 37 0 -50.38 ± 28.55
379971 ncm-dbt-03 585674 500 115 144 241 -20.17 ± 14.96 0 76 127 47 0 -40.48 ± 30.28
379970 ncm-dbt-01 585169 500 102 154 244 -36.26 ± 15.9 1 95 109 45 0 -71.89 ± 32.59
379969 ncm-dbt-02 586816 500 119 141 240 -15.3 ± 14.58 0 68 137 44 1 -32.05 ± 29.0
379968 ncm-dbt-05 584034 500 116 141 243 -17.38 ± 14.62 1 68 136 45 0 -33.46 ± 29.13
379967 ncm-dbt-04 573284 500 113 135 252 -15.3 ± 14.71 2 64 138 46 0 -27.85 ± 28.87
379966 ncm-dbt-03 588004 500 119 133 248 -9.73 ± 14.89 0 67 130 53 0 -19.48 ± 29.91
379965 ncm-dbt-01 583279 500 105 154 241 -34.16 ± 14.26 1 80 136 33 0 -67.55 ± 29.02
379964 ncm-dbt-02 587877 500 103 150 247 -32.76 ± 14.43 0 83 131 36 0 -66.1 ± 29.72
379963 ncm-dbt-05 586435 500 114 140 246 -18.08 ± 13.75 0 65 146 39 0 -36.26 ± 27.78
379962 ncm-dbt-03 585759 500 106 146 248 -27.86 ± 13.96 0 74 143 32 1 -57.5 ± 28.1
379961 ncm-dbt-04 574825 500 110 135 255 -17.39 ± 15.12 0 74 128 47 1 -36.26 ± 30.15
379960 ncm-dbt-01 584706 500 119 147 234 -19.48 ± 15.15 2 70 133 44 1 -37.67 ± 29.51

Commit

Commit ID 061f98a9e3ae439fac13b4b2dda4be47977994b1
Author lonfom169
Date 2021-12-31 06:44:15 UTC
Smooth out doDeeperSearch Adjust threshold based on the difference between newDepth and LMR depth. With more reduction, bigger fail-high is required in order to perform the deeper search. STC: LLR: 2.96 (-2.94,2.94) <0.00,2.50> Total: 93576 W: 24133 L: 23758 D: 45685 Ptnml(0-2): 260, 10493, 24935, 10812, 288 https://tests.stockfishchess.org/tests/view/61cbb5cee68b2a714b6eaf09 LTC: LLR: 2.94 (-2.94,2.94) <0.50,3.00> Total: 109280 W: 28198 L: 27754 D: 53328 Ptnml(0-2): 60, 11225, 31637, 11647, 71 https://tests.stockfishchess.org/tests/view/61cc03fee68b2a714b6ec091 closes https://github.com/official-stockfish/Stockfish/pull/3877 Bench: 4464723
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