Dev Builds » 20191023-0849

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 08:28:51 1972824 3336 2028 68 1240 +234.13 +/- 9.59
ncm-et-4 08:26:33 1955769 3299 1952 67 1280 +225.69 +/- 9.41
ncm-et-9 08:29:06 1965860 3330 2068 59 1203 +242.62 +/- 9.73
ncm-et-10 08:29:21 1958793 3301 2051 60 1190 +242.54 +/- 9.79
ncm-et-13 08:30:47 1974640 3376 2051 49 1276 +237.05 +/- 9.4
ncm-et-15 08:30:24 1971244 3358 2029 54 1275 +234.46 +/- 9.42
20000 12179 357 7464 +236.03 +/- 3.9

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
101050 ncm-et-4 2019-10-24 08:57 00:44:45 1972035 299 170 3 126 +219.12 +/- 29.69
101049 ncm-et-10 2019-10-24 08:56 00:46:15 1957407 301 188 6 107 +243.36 +/- 32.88
101048 ncm-et-9 2019-10-24 08:53 00:49:34 1963107 330 191 12 127 +211.1 +/- 30.23
101047 ncm-et-3 2019-10-24 08:51 00:51:12 1978101 336 219 10 107 +253.04 +/- 33.11
101046 ncm-et-15 2019-10-24 08:48 00:54:01 1972498 358 231 3 124 +261.58 +/- 30.32
101045 ncm-et-13 2019-10-24 08:46 00:56:10 1972221 376 229 5 142 +238.52 +/- 28.28
101044 ncm-et-4 2019-10-24 07:40 01:16:26 1970326 500 310 9 181 +241.91 +/- 25.17
101043 ncm-et-10 2019-10-24 07:38 01:17:24 1958472 500 322 7 171 +257.59 +/- 25.91
101042 ncm-et-9 2019-10-24 07:34 01:17:52 1964003 500 314 4 182 +251.89 +/- 24.91
101041 ncm-et-3 2019-10-24 07:33 01:17:11 1970650 500 307 9 184 +238.66 +/- 24.94
101040 ncm-et-15 2019-10-24 07:30 01:16:56 1960782 500 279 14 207 +205.04 +/- 23.46
101039 ncm-et-13 2019-10-24 07:29 01:16:08 1978566 500 303 7 190 +236.51 +/- 24.42
101038 ncm-et-4 2019-10-24 06:21 01:18:01 1941316 500 285 14 201 +210.89 +/- 23.85
101037 ncm-et-10 2019-10-24 06:20 01:16:24 1963386 500 298 9 193 +229.12 +/- 24.27
101036 ncm-et-9 2019-10-24 06:17 01:15:59 1967404 500 320 6 174 +256.44 +/- 25.62
101035 ncm-et-3 2019-10-24 06:15 01:16:42 1969879 500 289 8 203 +220.88 +/- 23.55
101034 ncm-et-15 2019-10-24 06:13 01:16:06 1977124 500 302 9 189 +233.32 +/- 24.56
101033 ncm-et-13 2019-10-24 06:13 01:15:02 1980523 500 314 2 184 +254.16 +/- 24.66
101032 ncm-et-4 2019-10-24 05:05 01:15:01 1968313 500 301 8 191 +233.32 +/- 24.39
101031 ncm-et-10 2019-10-24 05:02 01:17:02 1958496 500 310 9 181 +241.91 +/- 25.17
101030 ncm-et-9 2019-10-24 04:59 01:16:37 1971257 500 305 10 185 +235.45 +/- 24.89
101029 ncm-et-3 2019-10-24 04:57 01:16:28 1978411 500 297 8 195 +229.12 +/- 24.1
101028 ncm-et-13 2019-10-24 04:55 01:16:06 1978881 500 290 10 200 +219.87 +/- 23.82
101027 ncm-et-15 2019-10-24 04:54 01:17:27 1972651 500 295 9 196 +226.0 +/- 24.06
101026 ncm-et-4 2019-10-24 03:46 01:17:30 1974523 500 296 11 193 +224.97 +/- 24.33
101025 ncm-et-9 2019-10-24 03:43 01:15:25 1966327 500 322 6 172 +258.75 +/- 25.79
101024 ncm-et-10 2019-10-24 03:42 01:18:48 1957405 500 316 7 177 +250.77 +/- 25.42
101023 ncm-et-3 2019-10-24 03:41 01:15:20 1970032 500 304 13 183 +231.21 +/- 25.11
101022 ncm-et-15 2019-10-24 03:38 01:14:59 1970491 500 308 4 188 +245.2 +/- 24.45
101021 ncm-et-13 2019-10-24 03:37 01:16:55 1963389 500 289 11 200 +217.85 +/- 23.85
101020 ncm-et-4 2019-10-24 02:30 01:14:47 1976227 500 305 12 183 +233.32 +/- 25.09
101019 ncm-et-9 2019-10-24 02:26 01:15:58 1961688 500 301 13 186 +228.08 +/- 24.89
101018 ncm-et-3 2019-10-24 02:24 01:16:02 1966156 500 307 12 181 +235.45 +/- 25.24
101017 ncm-et-10 2019-10-24 02:24 01:17:10 1951156 500 309 15 176 +234.38 +/- 25.69
101016 ncm-et-15 2019-10-24 02:23 01:14:46 1973427 500 312 8 180 +245.2 +/- 25.21
101015 ncm-et-13 2019-10-24 02:21 01:15:31 1969866 500 314 7 179 +248.53 +/- 25.26
101014 ncm-et-4 2019-10-24 01:09 01:20:03 1887648 500 285 10 205 +214.85 +/- 23.48
101013 ncm-et-3 2019-10-24 01:07 01:15:56 1976539 500 305 8 187 +237.58 +/- 24.68
101012 ncm-et-9 2019-10-24 01:07 01:17:41 1967239 500 315 8 177 +248.53 +/- 25.45
101011 ncm-et-10 2019-10-24 01:07 01:16:18 1965235 500 308 7 185 +241.91 +/- 24.8
101010 ncm-et-15 2019-10-24 01:05 01:16:09 1971740 500 302 7 191 +235.45 +/- 24.35
101009 ncm-et-13 2019-10-24 01:05 01:14:55 1979038 500 312 7 181 +246.3 +/- 25.1

Commit

Commit ID 7e89a71624e07c735c2230dbbf2c7dbae864916e
Author Joost VandeVondele
Date 2019-10-23 08:49:08 UTC
Simplify reductions on singular extension Current master employs a scheme to adjust reductions on singular nodes that is somewhat controversial, see https://github.com/official-stockfish/Stockfish/pull/2167 This patch removes this use of a search result outside of [a,b], by observing that the main effect of this code is to adjust the reduction by an average of ~2 (1.7) rather than 1. Claims the first blue at STC and LTC: STC: LLR: 2.96 (-2.94,2.94) [-3.00,1.00] Total: 30142 W: 6547 L: 6442 D: 17153 http://tests.stockfishchess.org/tests/view/5daf16c40ebc5902c06da566 LTC: LLR: 2.96 (-2.94,2.94) [-3.00,1.00] Total: 45715 W: 7380 L: 7298 D: 31037 http://tests.stockfishchess.org/tests/view/5daf2f3c0ebc5902c06da6c7 Closes https://github.com/official-stockfish/Stockfish/pull/2367 Bench: 5115841
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