Dev Builds » 20200412-1838

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 08:54:47 1961425 3538 2182 66 1290 +239.78 +/- 9.4
ncm-et-4 08:54:10 1968609 3561 2176 58 1327 +238.0 +/- 9.24
ncm-et-9 07:44:24 1966383 3084 1894 45 1145 +240.58 +/- 9.94
ncm-et-10 08:53:14 1962266 3548 2209 60 1279 +243.93 +/- 9.43
ncm-et-13 07:54:17 1962064 3144 1902 56 1186 +233.93 +/- 9.78
ncm-et-15 07:51:18 1970623 3125 1976 46 1103 +250.54 +/- 10.16
20000 12339 331 7330 +241.04 +/- 3.93

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
129214 ncm-et-3 2020-04-13 05:13 00:06:03 1962610 38 28 1 9 +308.61 +/- 125.95
129213 ncm-et-10 2020-04-13 05:12 00:07:30 1962457 48 32 0 16 +279.57 +/- 87.54
129212 ncm-et-4 2020-04-13 05:11 00:09:05 1972183 61 45 0 16 +328.45 +/- 89.0
129211 ncm-et-9 2020-04-13 05:07 00:12:33 1972030 84 57 1 26 +279.59 +/- 68.34
129210 ncm-et-15 2020-04-13 05:01 00:19:02 1971426 125 74 3 48 +223.94 +/- 49.35
129209 ncm-et-13 2020-04-13 04:58 00:21:43 1961228 144 93 1 50 +262.76 +/- 48.1
129208 ncm-et-3 2020-04-13 03:57 01:15:55 1963685 500 298 5 197 +233.32 +/- 23.84
129207 ncm-et-10 2020-04-13 03:56 01:15:11 1954499 500 310 11 179 +239.74 +/- 25.37
129206 ncm-et-4 2020-04-13 03:54 01:15:22 1970330 500 295 8 197 +227.04 +/- 23.96
129205 ncm-et-9 2020-04-13 03:51 01:14:43 1970340 500 310 4 186 +247.41 +/- 24.6
129204 ncm-et-15 2020-04-13 03:44 01:15:41 1963534 500 331 5 164 +270.57 +/- 26.44
129203 ncm-et-13 2020-04-13 03:43 01:13:49 1965687 500 304 9 187 +235.45 +/- 24.71
129202 ncm-et-10 2020-04-13 02:40 01:15:08 1957405 500 335 3 162 +277.93 +/- 26.53
129201 ncm-et-3 2020-04-13 02:39 01:16:11 1961384 500 306 4 190 +243.0 +/- 24.3
129200 ncm-et-4 2020-04-13 02:38 01:15:36 1965579 500 300 10 190 +230.16 +/- 24.52
129199 ncm-et-9 2020-04-13 02:35 01:15:12 1964147 500 311 10 179 +241.91 +/- 25.35
129198 ncm-et-15 2020-04-13 02:28 01:14:56 1972655 500 311 8 181 +244.1 +/- 25.14
129197 ncm-et-13 2020-04-13 02:27 01:15:18 1960617 500 303 8 189 +235.45 +/- 24.53
129196 ncm-et-3 2020-04-13 01:24 01:14:32 1961082 500 323 14 163 +250.77 +/- 26.74
129195 ncm-et-10 2020-04-13 01:23 01:15:53 1964629 500 302 12 186 +230.16 +/- 24.87
129194 ncm-et-4 2020-04-13 01:21 01:15:38 1963544 500 313 7 180 +247.41 +/- 25.18
129193 ncm-et-9 2020-04-13 01:18 01:15:32 1966314 500 303 8 189 +235.45 +/- 24.53
129192 ncm-et-15 2020-04-13 01:12 01:14:45 1973425 500 329 6 165 +266.97 +/- 26.39
129191 ncm-et-13 2020-04-13 01:10 01:15:51 1961845 500 281 9 210 +211.87 +/- 23.12
129190 ncm-et-3 2020-04-13 00:08 01:14:47 1966304 500 296 12 192 +223.94 +/- 24.43
129189 ncm-et-10 2020-04-13 00:06 01:15:24 1959408 500 295 6 199 +229.12 +/- 23.74
129188 ncm-et-4 2020-04-13 00:06 01:13:41 1973738 500 311 5 184 +247.41 +/- 24.79
129187 ncm-et-9 2020-04-13 00:02 01:15:38 1962617 500 296 6 198 +230.16 +/- 23.81
129186 ncm-et-15 2020-04-12 23:56 01:15:21 1968788 500 311 11 178 +240.82 +/- 25.45
129185 ncm-et-13 2020-04-12 23:53 01:15:55 1964302 500 307 4 189 +244.1 +/- 24.38
129184 ncm-et-3 2020-04-12 22:50 01:17:02 1950807 500 311 13 176 +238.66 +/- 25.65
129183 ncm-et-10 2020-04-12 22:49 01:15:51 1969858 500 308 12 180 +236.51 +/- 25.32
129182 ncm-et-4 2020-04-12 22:49 01:15:48 1962975 500 308 7 185 +241.91 +/- 24.8
129181 ncm-et-9 2020-04-12 22:45 01:15:13 1962464 500 320 11 169 +250.77 +/- 26.18
129180 ncm-et-15 2020-04-12 22:39 01:15:53 1972494 500 309 7 184 +243.0 +/- 24.87
129179 ncm-et-13 2020-04-12 22:37 01:15:09 1961996 500 317 12 171 +246.3 +/- 26.04
129178 ncm-et-10 2020-04-12 21:34 01:13:59 1965547 500 312 9 179 +244.1 +/- 25.32
129177 ncm-et-3 2020-04-12 21:34 01:14:38 1961841 500 311 8 181 +244.1 +/- 25.14
129176 ncm-et-4 2020-04-12 21:34 01:14:31 1971579 500 307 7 186 +240.82 +/- 24.72
129175 ncm-et-9 2020-04-12 21:29 01:15:33 1966775 500 297 5 198 +232.26 +/- 23.77
129174 ncm-et-15 2020-04-12 21:22 01:15:40 1972041 500 311 6 183 +246.3 +/- 24.91
129173 ncm-et-13 2020-04-12 21:19 01:16:32 1958778 500 297 13 190 +223.94 +/- 24.6
129172 ncm-et-10 2020-04-12 20:19 01:14:18 1964326 500 315 7 178 +249.64 +/- 25.34
129171 ncm-et-4 2020-04-12 20:18 01:14:29 1968951 500 297 14 189 +222.92 +/- 24.69
129170 ncm-et-3 2020-04-12 20:17 01:15:39 1963687 500 309 9 182 +240.82 +/- 25.09

Commit

Commit ID 2c5f0efa1350ea19d32c599ddd6b9350f1d216ff
Author Joost VandeVondele
Date 2020-04-12 18:38:47 UTC
Extend irreversible moves if these are ttMoves and played in positions with a high value of the rule50 counter. The unusual extension of 2 is safe in this context as awarding it will reset the rule50 counter, making sure it is awarded very rarely in a search path. This patch partially addresses https://github.com/official-stockfish/Stockfish/issues/2620 as it should make it less likely to play a move that resets the counter, but that is worse than alternative moves after a slightly deeper search. passed STC: LLR: 2.96 (-2.94,2.94) {-0.50,1.50} Total: 71658 W: 13840 L: 13560 D: 44258 Ptnml(0-2): 1058, 7921, 17643, 8097, 1110 https://tests.stockfishchess.org/tests/view/5e90d0f6754c3424c4cf9f41 passed LTC: LLR: 2.94 (-2.94,2.94) {0.25,1.75} Total: 85082 W: 11069 L: 10680 D: 63333 Ptnml(0-2): 459, 6982, 27259, 7393, 448 https://tests.stockfishchess.org/tests/view/5e917470af0a0143109dc341 closes https://github.com/official-stockfish/Stockfish/pull/2623 Bench: 4432822
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