Dev Builds » 20181119-0847

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 10:04:14 1966043 3923 2185 110 1628 +204.52 +/- 8.34
ncm-et-4 10:06:49 1963138 3919 2164 102 1653 +203.18 +/- 8.26
ncm-et-9 01:04:46 1972804 414 221 12 181 +193.09 +/- 25.0
ncm-et-10 10:11:32 1967236 3916 2124 101 1691 +198.63 +/- 8.15
ncm-et-13 10:05:14 1975684 3916 2182 98 1636 +206.09 +/- 8.3
ncm-et-15 10:10:30 1962672 3913 2199 113 1601 +206.54 +/- 8.42
20001 11075 536 8390 +203.55 +/- 3.67

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
60127 ncm-et-15 2018-11-25 01:10 01:04:40 1956947 413 218 13 182 +189.17 +/- 24.95
60126 ncm-et-13 2018-11-25 01:10 01:04:43 1963840 416 239 9 168 +216.29 +/- 26.01
60125 ncm-et-4 2018-11-25 01:10 01:04:50 1965693 419 232 13 174 +201.52 +/- 25.63
60124 ncm-et-10 2018-11-25 01:10 01:04:51 1965843 416 224 14 178 +193.08 +/- 25.32
60123 ncm-et-3 2018-11-25 01:10 01:04:55 1966154 423 230 16 177 +193.6 +/- 25.47
60122 ncm-et-9 2018-11-25 01:10 01:04:46 1972804 414 221 12 181 +193.09 +/- 25.0
60036 ncm-et-15 2018-11-24 04:52 01:16:29 1973497 500 280 18 202 +202.15 +/- 23.87
60035 ncm-et-10 2018-11-24 04:51 01:17:55 1981357 500 281 11 208 +209.91 +/- 23.31
60034 ncm-et-4 2018-11-24 04:48 01:16:43 1964610 500 268 12 220 +196.45 +/- 22.58
60033 ncm-et-13 2018-11-24 04:45 01:17:49 1974681 500 290 18 192 +211.87 +/- 24.55
60032 ncm-et-3 2018-11-24 04:44 01:17:22 1960308 500 282 16 202 +206.01 +/- 23.83
60031 ncm-et-15 2018-11-24 03:32 01:18:19 1958320 500 289 16 195 +212.86 +/- 24.31
60030 ncm-et-10 2018-11-24 03:32 01:17:49 1968683 500 274 13 213 +201.19 +/- 23.05
60029 ncm-et-4 2018-11-24 03:28 01:18:46 1926126 500 279 12 209 +206.98 +/- 23.28
60028 ncm-et-13 2018-11-24 03:27 01:16:51 1979192 500 266 9 225 +197.4 +/- 22.18
60027 ncm-et-3 2018-11-24 03:27 01:16:31 1965997 500 280 11 209 +208.93 +/- 23.25
60026 ncm-et-15 2018-11-24 02:13 01:17:36 1970080 500 273 13 214 +200.24 +/- 22.98
60025 ncm-et-10 2018-11-24 02:13 01:18:01 1963236 500 272 12 216 +200.24 +/- 22.83
60024 ncm-et-13 2018-11-24 02:10 01:16:21 1974371 500 278 11 211 +206.98 +/- 23.12
60023 ncm-et-4 2018-11-24 02:10 01:17:36 1968698 500 297 13 190 +223.94 +/- 24.6
60022 ncm-et-3 2018-11-24 02:09 01:16:24 1968003 500 259 16 225 +184.42 +/- 22.39
60021 ncm-et-10 2018-11-24 00:53 01:18:53 1963690 500 275 10 215 +205.04 +/- 22.83
60020 ncm-et-15 2018-11-24 00:52 01:20:10 1955586 500 280 11 209 +208.93 +/- 23.25
60019 ncm-et-13 2018-11-24 00:52 01:16:46 1974066 500 283 10 207 +212.86 +/- 23.35
60018 ncm-et-3 2018-11-24 00:51 01:17:20 1970972 500 257 10 233 +188.08 +/- 21.74
60017 ncm-et-4 2018-11-24 00:51 01:17:57 1964304 500 274 13 213 +201.19 +/- 23.05
60016 ncm-et-10 2018-11-23 23:35 01:17:28 1965389 500 253 12 235 +182.61 +/- 21.69
60015 ncm-et-13 2018-11-23 23:34 01:17:11 1982824 500 270 14 216 +196.45 +/- 22.88
60014 ncm-et-15 2018-11-23 23:33 01:17:44 1961861 500 288 10 202 +217.85 +/- 23.68
60013 ncm-et-4 2018-11-23 23:33 01:16:19 1984285 500 266 15 219 +191.78 +/- 22.72
60012 ncm-et-3 2018-11-23 23:32 01:17:31 1964609 500 282 18 200 +204.07 +/- 24.0
60011 ncm-et-13 2018-11-23 22:16 01:16:46 1972348 500 276 15 209 +201.19 +/- 23.35
60010 ncm-et-4 2018-11-23 22:15 01:17:22 1968775 500 276 14 210 +202.15 +/- 23.26
60009 ncm-et-15 2018-11-23 22:15 01:17:51 1959388 500 286 11 203 +214.85 +/- 23.64
60008 ncm-et-10 2018-11-23 22:14 01:19:05 1958319 500 278 20 202 +198.34 +/- 23.9
60007 ncm-et-3 2018-11-23 22:13 01:17:52 1964920 500 290 9 201 +220.88 +/- 23.72
60006 ncm-et-4 2018-11-23 20:56 01:17:16 1962616 500 272 10 218 +202.15 +/- 22.64
60005 ncm-et-3 2018-11-23 20:56 01:16:19 1967385 500 305 14 181 +231.21 +/- 25.28
60004 ncm-et-13 2018-11-23 20:56 01:18:47 1984154 500 280 12 208 +207.95 +/- 23.34
60003 ncm-et-10 2018-11-23 20:56 01:17:30 1971371 500 267 9 224 +198.34 +/- 22.24
60002 ncm-et-15 2018-11-23 20:56 01:17:41 1965702 500 285 21 194 +204.07 +/- 24.45

Commit

Commit ID 2a7213f7205bfc9b8e6b91c1a1282f06aa3cd257
Author Vizvezdenec
Date 2018-11-19 08:47:19 UTC
Change default contempt from 21 to 24 centipawns To top the rating lists and get more interesting middle play, it is a good habit to set the default contempt to the highest value that does not regress against contempt=0. We recently decreased PawnValueEg it is logical that to raise a little bit the default higher contempt because of the following internal dependency in line 334 of search.cpp : ```` int ct = int(Options["Contempt"]) * PawnValueEg / 100; // From centipawns ```` STC: contempt=24 passed non-regression vs contempt=0 http://tests.stockfishchess.org/tests/view/5bd6d7f80ebc595e0ae21e14 LTC: contempt=24 passed non-regression LTC vs contempt=0 http://tests.stockfishchess.org/tests/view/5bd6e0980ebc595e0ae21f07 On 2018-11-01, we also tested the effects of contempt=21 and contempt=24 against Stockfish 9, and the net result was neutral: Contempt 21 ELO: 51.68 +-1.9 (95%) LOS: 100.0% Total: 40000 W: 9487 L: 3581 D: 26932 http://tests.stockfishchess.org/tests/view/5bdb1a140ebc595e0ae2620a Contempt 24 ELO: 52.21 +-2.0 (95%) LOS: 100.0% Total: 40000 W: 9759 L: 3793 D: 26448 http://tests.stockfishchess.org/tests/view/5bdb1b680ebc595e0ae2620d Bench: 3459874
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