Dev Builds » 20200210-0819

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 08:23:43 1962305 3350 2106 66 1178 +245.73 +/- 9.86
ncm-et-4 08:22:38 1968395 3337 2050 54 1233 +239.82 +/- 9.59
ncm-et-9 08:20:54 1968403 3325 2086 62 1177 +245.6 +/- 9.85
ncm-et-10 08:22:09 1961989 3322 2070 50 1202 +245.24 +/- 9.72
ncm-et-13 08:20:54 1971861 3318 2032 54 1232 +238.74 +/- 9.59
ncm-et-15 08:22:34 1968169 3348 2077 42 1229 +245.1 +/- 9.59
20000 12421 328 7251 +243.36 +/- 3.96

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
115382 ncm-et-10 2020-02-11 05:00 00:47:36 1960777 322 201 5 116 +245.58 +/- 31.46
115381 ncm-et-13 2020-02-11 05:00 00:48:24 1975447 318 198 5 115 +244.6 +/- 31.6
115380 ncm-et-9 2020-02-11 05:00 00:48:41 1961080 325 202 5 118 +244.18 +/- 31.17
115379 ncm-et-4 2020-02-11 04:57 00:51:22 1972196 337 211 4 122 +248.66 +/- 30.58
115378 ncm-et-3 2020-02-11 04:57 00:51:50 1961691 350 216 8 126 +237.74 +/- 30.3
115377 ncm-et-15 2020-02-11 04:57 00:51:52 1967083 348 217 3 128 +249.05 +/- 29.74
115376 ncm-et-10 2020-02-11 03:46 01:13:38 1962790 500 296 5 199 +231.21 +/- 23.7
115375 ncm-et-13 2020-02-11 03:45 01:14:10 1976537 500 312 9 179 +244.1 +/- 25.32
115374 ncm-et-9 2020-02-11 03:45 01:14:10 1991988 500 312 14 174 +238.66 +/- 25.83
115373 ncm-et-15 2020-02-11 03:42 01:13:40 1974825 500 324 6 170 +261.07 +/- 25.96
115372 ncm-et-4 2020-02-11 03:41 01:15:00 1962613 500 308 16 176 +232.26 +/- 25.7
115371 ncm-et-3 2020-02-11 03:41 01:15:01 1962611 500 307 12 181 +235.45 +/- 25.24
115370 ncm-et-10 2020-02-11 02:29 01:15:14 1963692 500 315 8 177 +248.53 +/- 25.45
115369 ncm-et-13 2020-02-11 02:28 01:15:20 1968930 500 302 7 191 +235.45 +/- 24.35
115368 ncm-et-9 2020-02-11 02:28 01:15:48 1960463 500 322 11 167 +253.02 +/- 26.35
115367 ncm-et-15 2020-02-11 02:26 01:15:07 1971111 500 308 4 188 +245.2 +/- 24.45
115366 ncm-et-4 2020-02-11 02:25 01:15:04 1970027 500 295 4 201 +231.21 +/- 23.52
115365 ncm-et-3 2020-02-11 02:24 01:15:24 1964457 500 318 4 178 +256.44 +/- 25.22
115364 ncm-et-10 2020-02-11 01:12 01:16:52 1957257 500 319 10 171 +250.77 +/- 25.99
115363 ncm-et-13 2020-02-11 01:11 01:16:19 1967092 500 300 7 193 +233.32 +/- 24.21
115362 ncm-et-9 2020-02-11 01:09 01:17:14 1966469 500 296 8 196 +228.08 +/- 24.03
115361 ncm-et-4 2020-02-11 01:09 01:15:09 1967701 500 302 6 192 +236.51 +/- 24.24
115360 ncm-et-15 2020-02-11 01:09 01:15:59 1966304 500 294 8 198 +226.0 +/- 23.89
115359 ncm-et-3 2020-02-11 01:07 01:15:47 1961843 500 322 12 166 +251.89 +/- 26.45
115358 ncm-et-10 2020-02-10 23:55 01:15:39 1964623 500 300 6 194 +234.38 +/- 24.1
115357 ncm-et-13 2020-02-10 23:54 01:15:40 1971100 500 319 7 174 +254.16 +/- 25.66
115356 ncm-et-4 2020-02-10 23:54 01:14:02 1977947 500 313 7 180 +247.41 +/- 25.18
115355 ncm-et-15 2020-02-10 23:54 01:13:59 1970014 500 316 7 177 +250.77 +/- 25.42
115354 ncm-et-9 2020-02-10 23:53 01:15:50 1967856 500 325 8 167 +259.91 +/- 26.28
115353 ncm-et-3 2020-02-10 23:51 01:14:51 1960309 500 324 4 172 +263.42 +/- 25.71
115352 ncm-et-4 2020-02-10 22:37 01:15:47 1971575 500 308 9 183 +239.74 +/- 25.01
115351 ncm-et-9 2020-02-10 22:37 01:14:53 1961227 500 316 4 180 +254.16 +/- 25.06
115350 ncm-et-13 2020-02-10 22:36 01:17:08 1970949 500 284 9 207 +214.85 +/- 23.31
115349 ncm-et-10 2020-02-10 22:36 01:17:50 1958937 500 330 9 161 +264.6 +/- 26.83
115348 ncm-et-15 2020-02-10 22:36 01:16:44 1961852 500 302 8 190 +234.38 +/- 24.46
115347 ncm-et-3 2020-02-10 22:34 01:16:15 1963993 500 315 16 169 +239.74 +/- 26.26
115346 ncm-et-13 2020-02-10 21:21 01:13:53 1972973 500 317 10 173 +248.53 +/- 25.83
115345 ncm-et-9 2020-02-10 21:21 01:14:18 1969741 500 313 12 175 +241.91 +/- 25.71
115344 ncm-et-10 2020-02-10 21:20 01:15:20 1965848 500 309 7 184 +243.0 +/- 24.87
115343 ncm-et-15 2020-02-10 21:20 01:15:13 1965996 500 316 6 178 +251.89 +/- 25.3
115342 ncm-et-4 2020-02-10 21:20 01:16:14 1956707 500 313 8 179 +246.3 +/- 25.29
115341 ncm-et-3 2020-02-10 21:18 01:14:35 1961232 500 304 10 186 +234.38 +/- 24.81

Commit

Commit ID 4e8986483a83296e37433da7b07b64de53613f6f
Author Vizvezdenec
Date 2020-02-10 08:19:02 UTC
Modify singular beta for ttPv positions. This patch lowers singular beta for positions that have been in pv and are not pv nodes. The idea of using ttpv && !PvNode improved scaling with TC and could be useful for other search heuristics. passed STC http://tests.stockfishchess.org/tests/view/5e3f6d7ce70d848499f63bbc LLR: 2.94 (-2.94,2.94) {-0.50,1.50} Total: 154953 W: 29688 L: 29272 D: 95993 Ptnml(0-2): 2616, 17912, 36037, 18210, 2673 passed LTC http://tests.stockfishchess.org/tests/view/5e405561e70d848499f63bfa LLR: 2.95 (-2.94,2.94) {0.25,1.75} Total: 70974 W: 9305 L: 8932 D: 52737 Ptnml(0-2): 466, 6658, 20920, 6826, 569 closes https://github.com/official-stockfish/Stockfish/pull/2550 Bench: 4932981
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