Dev Builds » 20221123-2045

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 06:59:47 582179 4008 1122 895 1991 +19.7 ± 5.11 8 320 1117 555 4 +40.23 ± 10.1
ncm-dbt-02 06:57:09 584300 4000 1157 914 1929 +21.13 ± 5.16 6 329 1084 578 3 +42.95 ± 10.29
ncm-dbt-03 06:59:44 585981 4002 1133 934 1935 +17.29 ± 5.03 3 333 1130 532 3 +34.67 ± 10.03
ncm-dbt-04 06:59:00 569370 3998 1091 957 1950 +11.65 ± 5.1 4 371 1113 509 2 +23.67 ± 10.14
ncm-dbt-05 06:58:41 583509 3992 1146 870 1976 +24.06 ± 5.12 2 318 1082 590 4 +48.0 ± 10.3
20000 5649 4570 9781 +18.76 ± 2.28 23 1671 5526 2764 16 +37.88 ± 4.55

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
413047 ncm-dbt-03 584706 2 1 1 0 0.0 ± 34.02 0 0 1 0 0 0.0 ± 30.47 ↓
413046 ncm-dbt-01 584076 8 4 4 0 0.0 ± 8.51 0 0 4 0 0 0.0 ± 7.61 ↓
413045 ncm-dbt-05 586774 492 142 105 245 +26.18 ± 13.32 0 30 149 67 0 +52.66 ± 27.14 ↓
413044 ncm-dbt-04 565115 498 139 107 252 +22.36 ± 14.53 0 42 133 74 0 +44.9 ± 29.49 ↓
413043 ncm-dbt-02 581860 500 147 115 238 +22.27 ± 14.6 0 43 132 75 0 +44.72 ± 29.63 ↓
413042 ncm-dbt-01 579042 500 141 127 232 +9.73 ± 13.99 1 42 150 56 1 +19.48 ± 27.27 ↓
413041 ncm-dbt-03 586689 500 145 127 228 +12.51 ± 15.24 2 47 133 67 1 +26.46 ± 29.52 ↓
413040 ncm-dbt-04 570629 500 143 124 233 +13.21 ± 15.41 1 51 127 70 1 +26.46 ± 30.28 ↓
413039 ncm-dbt-05 585042 500 149 103 248 +32.05 ± 14.52 0 37 130 83 0 +64.66 ± 29.86 ↓
413038 ncm-dbt-02 581652 500 152 125 223 +18.78 ± 13.94 0 40 143 67 0 +37.67 ± 28.18 ↓
413037 ncm-dbt-01 582444 500 140 111 249 +20.18 ± 13.78 2 32 151 65 0 +43.3 ± 27.04 ↓
413036 ncm-dbt-03 584748 500 144 106 250 +26.46 ± 13.72 0 34 144 72 0 +53.22 ± 27.98 ↓
413035 ncm-dbt-05 582778 500 147 112 241 +24.36 ± 14.76 0 43 129 78 0 +48.96 ± 30.01 ↓
413034 ncm-dbt-04 570629 500 141 116 243 +17.39 ± 14.36 0 44 137 69 0 +34.86 ± 28.99 ↓
413033 ncm-dbt-02 582736 500 138 115 247 +15.99 ± 15.26 2 46 129 73 0 +34.86 ± 30.03 ↓
413032 ncm-dbt-03 585421 500 140 120 240 +13.91 ± 15.1 1 49 129 71 0 +29.25 ± 30.03 ↓
413031 ncm-dbt-01 582861 500 137 104 259 +22.96 ± 14.4 0 41 135 74 0 +46.13 ± 29.23 ↓
413030 ncm-dbt-05 583992 500 146 106 248 +27.85 ± 15.12 0 42 128 78 2 +53.22 ± 30.14 ↓
413029 ncm-dbt-04 568554 500 144 122 234 +15.3 ± 13.93 1 39 147 63 0 +32.05 ± 27.65 ↓
413028 ncm-dbt-02 585211 500 130 109 261 +14.6 ± 14.4 1 43 140 66 0 +30.65 ± 28.6 ↓
413027 ncm-dbt-03 585337 500 137 128 235 +6.25 ± 13.81 0 46 150 53 1 +11.12 ± 27.29 ↓
413026 ncm-dbt-01 584579 500 128 116 256 +8.34 ± 15.27 1 52 133 62 2 +15.3 ± 29.53 ↓
413025 ncm-dbt-04 568713 500 130 116 254 +9.73 ± 14.38 0 48 141 60 1 +18.08 ± 28.49 ↓
413024 ncm-dbt-05 583531 500 142 104 254 +26.46 ± 14.9 1 39 132 77 1 +53.22 ± 29.61 ↓
413023 ncm-dbt-02 588643 500 143 122 235 +14.6 ± 14.78 1 46 134 69 0 +30.65 ± 29.39 ↓
413022 ncm-dbt-01 581194 500 146 112 242 +23.66 ± 14.32 2 34 142 72 0 +50.38 ± 28.27 ↓
413021 ncm-dbt-03 585843 500 141 117 242 +16.69 ± 13.22 0 36 154 60 0 +33.46 ± 26.66 ↓
413020 ncm-dbt-04 569629 500 122 127 251 -3.47 ± 13.69 0 53 149 48 0 -6.95 ± 27.43 ↓
413019 ncm-dbt-05 583992 500 130 118 252 +8.34 ± 14.39 0 49 141 59 1 +15.3 ± 28.49 ↓
413018 ncm-dbt-02 582861 500 144 109 247 +24.36 ± 13.84 1 33 146 70 0 +50.38 ± 27.71 ↓
413017 ncm-dbt-01 581860 500 150 105 245 +31.35 ± 14.85 0 39 128 82 1 +61.79 ± 30.13 ↓
413016 ncm-dbt-03 586604 500 144 110 246 +23.66 ± 14.32 0 40 136 74 0 +47.55 ± 29.1 ↓
413015 ncm-dbt-05 577725 500 142 106 252 +25.06 ± 14.42 0 40 134 76 0 +50.38 ± 29.35 ↓
413014 ncm-dbt-02 584664 500 140 111 249 +20.17 ± 15.57 0 49 126 72 3 +36.26 ± 30.41 ↓
413013 ncm-dbt-04 570789 500 133 115 252 +12.51 ± 14.23 1 43 143 63 0 +26.46 ± 28.21 ↓
413012 ncm-dbt-01 583028 500 147 110 243 +25.76 ± 14.34 0 39 135 76 0 +51.8 ± 29.22 ↓
413011 ncm-dbt-03 586350 500 130 111 259 +13.21 ± 14.41 0 46 140 63 1 +25.06 ± 28.61 ↓
413010 ncm-dbt-05 584243 500 148 116 236 +22.27 ± 14.34 1 38 139 72 0 +46.13 ± 28.7 ↓
413009 ncm-dbt-04 570909 500 139 130 231 +6.26 ± 14.72 1 51 136 62 0 +13.9 ± 29.15 ↓
413008 ncm-dbt-02 586774 500 163 108 229 +38.37 ± 14.26 1 29 134 86 0 +79.17 ± 29.25 ↓
413007 ncm-dbt-03 588132 500 151 114 235 +25.76 ± 13.81 0 35 143 72 0 +51.8 ± 28.13 ↓
413006 ncm-dbt-01 580530 500 129 106 265 +15.99 ± 14.64 2 41 139 68 0 +34.86 ± 28.73 ↓

Commit

Commit ID f5a31b7e576e2e56825fcfdff75c739ed545e852
Author Guenther Demetz
Date 2022-11-23 20:45:06 UTC
Correctly output lowerbound/upperbound in threaded searches fixes the lowerbound/upperbound output by taking the alpha,beta bracket into account also if a bestThread is selected that is different from the master thread. Instead of keeping track which bounds where used in the specific search, in this version we simply store the quality (exact, upperbound, lowerbound) of the score along with the actual score as information on rootMove. closes https://github.com/official-stockfish/Stockfish/pull/4239 No functional change
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