Dev Builds » 20190912-0833

You are viewing an old NCM Stockfish dev build test. You may find the most recent dev build tests using Stockfish 15 as the baseline here.

Use this dev build

NCM plays each Stockfish dev build 20,000 times against Stockfish 7. This yields an approximate Elo difference and establishes confidence in the strength of the dev builds.

Summary

Host Duration Avg Base NPS Games Wins Losses Draws Elo
ncm-et-3 08:35:35 1975461 3367 2073 49 1245 +241.44 ± 9.53
ncm-et-4 08:31:45 1973437 3385 2065 71 1249 +234.95 ± 9.56
ncm-et-9 08:01:45 1973770 3149 1935 73 1141 +236.14 ± 10.02
ncm-et-10 08:35:51 1964228 3353 2006 58 1289 +230.67 ± 9.36
ncm-et-13 08:35:10 1977985 3393 2143 52 1198 +249.79 ± 9.75
ncm-et-15 08:34:24 1964846 3353 2076 75 1202 +239.08 ± 9.76
20000 12298 378 7324 +238.66 ± 3.94

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
95856 ncm-et-9 2019-09-12 22:36 00:23:02 1980840 149 99 4 46 +262.0 ± 50.96
95855 ncm-et-10 2019-09-12 22:03 00:55:11 1974013 353 216 8 129 +235.04 ± 29.91
95854 ncm-et-15 2019-09-12 22:03 00:55:03 1927218 353 222 10 121 +241.13 ± 31.04
95853 ncm-et-3 2019-09-12 22:03 00:55:40 1974048 367 234 3 130 +257.26 ± 29.57
95852 ncm-et-4 2019-09-12 22:01 00:57:45 1971885 385 241 10 134 +240.82 ± 29.45
95851 ncm-et-13 2019-09-12 21:59 00:59:39 1971258 393 241 7 145 +238.35 ± 28.11
95850 ncm-et-9 2019-09-12 21:17 01:17:02 1964455 500 315 11 174 +245.2 ± 25.77
95849 ncm-et-10 2019-09-12 20:47 01:15:09 1967698 500 301 7 192 +234.38 ± 24.28
95848 ncm-et-15 2019-09-12 20:47 01:15:30 1970963 500 311 16 173 +235.45 ± 25.94
95847 ncm-et-3 2019-09-12 20:45 01:17:18 1965534 500 316 7 177 +250.77 ± 25.42
95846 ncm-et-4 2019-09-12 20:44 01:15:17 1973899 500 303 12 185 +231.21 ± 24.94
95845 ncm-et-13 2019-09-12 20:42 01:16:20 1971409 500 314 5 181 +250.77 ± 25.03
95844 ncm-et-9 2019-09-12 19:59 01:17:12 1977796 500 302 13 185 +229.12 ± 24.96
95843 ncm-et-15 2019-09-12 19:30 01:16:11 1973584 500 303 12 185 +231.21 ± 24.94
95842 ncm-et-10 2019-09-12 19:29 01:17:00 1959858 500 311 10 179 +241.91 ± 25.35
95841 ncm-et-4 2019-09-12 19:28 01:15:38 1973425 500 305 14 181 +231.21 ± 25.28
95840 ncm-et-3 2019-09-12 19:27 01:16:09 1978101 500 316 7 177 +250.77 ± 25.42
95839 ncm-et-13 2019-09-12 19:27 01:13:56 1984235 500 322 5 173 +259.91 ± 25.67
95838 ncm-et-9 2019-09-12 18:42 01:16:34 1974225 500 314 6 180 +249.64 ± 25.14
95837 ncm-et-10 2019-09-12 18:12 01:16:17 1968313 500 310 8 182 +243.0 ± 25.06
95836 ncm-et-4 2019-09-12 18:11 01:15:19 1969241 500 311 8 181 +244.1 ± 25.14
95835 ncm-et-15 2019-09-12 18:11 01:17:07 1973286 500 309 6 185 +244.1 ± 24.76
95834 ncm-et-3 2019-09-12 18:10 01:16:18 1977322 500 298 8 194 +230.16 ± 24.17
95833 ncm-et-13 2019-09-12 18:08 01:17:03 1974361 500 316 11 173 +246.3 ± 25.85
95832 ncm-et-9 2019-09-12 17:25 01:15:18 1973289 500 308 14 178 +234.38 ± 25.51
95831 ncm-et-4 2019-09-12 16:55 01:15:50 1978100 500 296 11 193 +224.97 ± 24.33
95830 ncm-et-15 2019-09-12 16:53 01:17:02 1977944 500 297 12 191 +224.97 ± 24.5
95829 ncm-et-10 2019-09-12 16:53 01:17:38 1957864 500 304 7 189 +237.58 ± 24.5
95828 ncm-et-3 2019-09-12 16:52 01:16:40 1976071 500 306 7 187 +239.74 ± 24.65
95827 ncm-et-13 2019-09-12 16:52 01:15:53 1972960 500 303 12 185 +231.21 ± 24.94
95826 ncm-et-9 2019-09-12 16:08 01:16:00 1973119 500 302 7 191 +235.45 ± 24.35
95825 ncm-et-4 2019-09-12 15:37 01:16:10 1969255 500 304 5 191 +239.74 ± 24.27
95824 ncm-et-15 2019-09-12 15:36 01:15:45 1967091 500 310 16 174 +234.38 ± 25.86
95823 ncm-et-3 2019-09-12 15:35 01:16:42 1977164 500 295 7 198 +228.08 ± 23.85
95822 ncm-et-13 2019-09-12 15:34 01:16:02 1974827 500 328 4 168 +268.17 ± 26.05
95821 ncm-et-10 2019-09-12 15:34 01:17:40 1961691 500 283 7 210 +215.85 ± 23.05
95820 ncm-et-9 2019-09-12 14:50 01:16:37 1972666 500 295 18 187 +216.85 ± 24.9
95819 ncm-et-4 2019-09-12 14:20 01:15:46 1978257 500 305 11 184 +234.38 ± 24.99
95818 ncm-et-15 2019-09-12 14:18 01:17:46 1963841 500 324 3 173 +264.6 ± 25.58
95817 ncm-et-13 2019-09-12 14:17 01:16:17 1996849 500 319 8 173 +253.02 ± 25.77
95816 ncm-et-3 2019-09-12 14:17 01:16:48 1979988 500 308 10 182 +238.66 ± 25.12
95815 ncm-et-10 2019-09-12 14:16 01:16:56 1960160 500 281 11 208 +209.91 ± 23.31

Commit

Commit ID 8aecf2698184babce57ccfd2ba5948342e29c325
Author Vizvezdenec
Date 2019-09-12 08:33:18 UTC
Scale down complexity for almost unwinnable endgames This patch greatly scales down complexity of endgames when the following conditions are all true together: - pawns are all on one flank - stronger side king is not outflanking weaker side - no passed pawns are present This should improve stockfish evaluation of obvious draws 4 vs 3, 3 vs 2 and 2 vs 1 pawns in rook/queen/knight/bishop single flank endgames where strong side can not make progress. passed STC LLR: 2.94 (-2.94,2.94) [0.50,4.50] Total: 15843 W: 3601 L: 3359 D: 8883 passed LTC LLR: 2.96 (-2.94,2.94) [0.00,3.50] Total: 121275 W: 20107 L: 19597 D: 81571 Closes https://github.com/official-stockfish/Stockfish/pull/2298 Bench: 3954190 ========================== How to continue from there? a) This could be a powerful idea for refining some parts of the evaluation function, a bit like when we try quadratics or other equations to emphasize certain situations (xoto10). b) Some other combinaison values for this bonus can be done further, or overall retuning of weight and offset while keeping the formula simple.
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