Dev Builds » 20200128-0931

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 08:25:35 1962569 3320 2071 58 1191 +244.28 +/- 9.78
ncm-et-4 08:23:49 1970093 3320 2045 49 1226 +241.48 +/- 9.61
ncm-et-9 08:20:29 1968972 3324 2031 43 1250 +239.78 +/- 9.49
ncm-et-10 08:23:34 1965132 3348 2105 56 1187 +247.42 +/- 9.8
ncm-et-13 08:25:15 1968721 3354 2104 62 1188 +245.66 +/- 9.81
ncm-et-15 08:24:54 1968720 3334 2087 50 1197 +246.85 +/- 9.74
20000 12443 318 7239 +244.24 +/- 3.96

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
113654 ncm-et-4 2020-01-29 14:43 00:48:21 1964919 320 205 4 111 +256.52 +/- 32.17
113653 ncm-et-3 2020-01-29 14:43 00:49:00 1962613 320 213 4 103 +271.25 +/- 33.53
113652 ncm-et-9 2020-01-29 14:42 00:49:47 1972046 324 211 3 110 +264.58 +/- 32.28
113651 ncm-et-15 2020-01-29 14:41 00:50:39 1971722 334 208 5 121 +245.08 +/- 30.78
113650 ncm-et-10 2020-01-29 14:39 00:52:21 1969242 348 224 4 120 +258.86 +/- 30.91
113649 ncm-et-13 2020-01-29 14:39 00:52:42 1972666 354 232 6 116 +262.49 +/- 31.63
113648 ncm-et-4 2020-01-29 13:28 01:14:50 1970014 500 311 7 182 +245.2 +/- 25.02
113647 ncm-et-3 2020-01-29 13:27 01:14:51 1964303 500 311 4 185 +248.53 +/- 24.68
113646 ncm-et-15 2020-01-29 13:25 01:14:34 1969411 500 320 5 175 +257.59 +/- 25.5
113645 ncm-et-9 2020-01-29 13:25 01:15:26 1962934 500 317 8 175 +250.77 +/- 25.61
113644 ncm-et-10 2020-01-29 13:23 01:14:42 1965707 500 312 11 177 +241.91 +/- 25.53
113643 ncm-et-13 2020-01-29 13:23 01:14:45 1967233 500 322 5 173 +259.91 +/- 25.67
113642 ncm-et-4 2020-01-29 12:10 01:16:00 1973903 500 321 10 169 +253.02 +/- 26.16
113641 ncm-et-15 2020-01-29 12:10 01:14:09 1973427 500 306 5 189 +241.91 +/- 24.42
113640 ncm-et-3 2020-01-29 12:10 01:16:07 1960614 500 323 9 168 +256.44 +/- 26.22
113639 ncm-et-9 2020-01-29 12:07 01:16:42 1975448 500 303 6 191 +237.58 +/- 24.31
113638 ncm-et-10 2020-01-29 12:07 01:15:10 1964773 500 323 5 172 +261.07 +/- 25.75
113637 ncm-et-13 2020-01-29 12:06 01:15:39 1965849 500 305 13 182 +232.26 +/- 25.19
113636 ncm-et-3 2020-01-29 10:53 01:16:00 1964765 500 310 10 180 +240.82 +/- 25.27
113635 ncm-et-4 2020-01-29 10:52 01:16:57 1965382 500 314 9 177 +246.3 +/- 25.48
113634 ncm-et-15 2020-01-29 10:52 01:16:55 1964764 500 317 10 173 +248.53 +/- 25.83
113633 ncm-et-10 2020-01-29 10:52 01:14:36 1965404 500 298 9 193 +229.12 +/- 24.27
113632 ncm-et-13 2020-01-29 10:52 01:13:43 1966926 500 308 7 185 +241.91 +/- 24.8
113631 ncm-et-9 2020-01-29 10:51 01:14:57 1966309 500 308 5 187 +244.1 +/- 24.57
113630 ncm-et-9 2020-01-29 09:36 01:14:40 1966772 500 304 11 185 +233.32 +/- 24.92
113629 ncm-et-13 2020-01-29 09:35 01:15:16 1972345 500 317 11 172 +247.41 +/- 25.93
113628 ncm-et-10 2020-01-29 09:35 01:15:22 1959567 500 304 9 187 +235.45 +/- 24.71
113627 ncm-et-15 2020-01-29 09:35 01:16:05 1966020 500 309 9 182 +240.82 +/- 25.09
113626 ncm-et-4 2020-01-29 09:35 01:16:21 1973586 500 300 6 194 +234.38 +/- 24.1
113625 ncm-et-3 2020-01-29 09:35 01:16:32 1964303 500 298 10 192 +228.08 +/- 24.38
113539 ncm-et-15 2020-01-28 15:16 01:15:55 1968004 500 317 11 172 +247.41 +/- 25.93
113538 ncm-et-10 2020-01-28 15:14 01:15:55 1963232 500 303 8 189 +235.45 +/- 24.53
113537 ncm-et-3 2020-01-28 15:13 01:16:51 1962456 500 312 11 177 +241.91 +/- 25.53
113536 ncm-et-4 2020-01-28 15:13 01:15:09 1974051 500 299 5 196 +234.38 +/- 23.91
113535 ncm-et-13 2020-01-28 15:12 01:16:09 1971265 500 303 14 183 +229.12 +/- 25.13
113534 ncm-et-9 2020-01-28 15:11 01:14:14 1965251 500 302 2 196 +240.82 +/- 23.77
113533 ncm-et-15 2020-01-28 13:58 01:16:37 1967696 500 310 5 185 +246.3 +/- 24.72
113532 ncm-et-10 2020-01-28 13:57 01:15:28 1968003 500 341 10 149 +276.69 +/- 27.98
113531 ncm-et-3 2020-01-28 13:56 01:16:14 1958933 500 304 10 186 +234.38 +/- 24.81
113530 ncm-et-4 2020-01-28 13:55 01:16:11 1968797 500 295 8 197 +227.04 +/- 23.96
113529 ncm-et-9 2020-01-28 13:55 01:14:43 1974047 500 286 8 206 +217.85 +/- 23.35
113528 ncm-et-13 2020-01-28 13:54 01:17:01 1964765 500 317 6 177 +253.02 +/- 25.38

Commit

Commit ID d878bc8cda47044f4db37a954f25e6122dc0d0ca
Author 31m059
Date 2020-01-28 09:31:25 UTC
Less NMP if the position was previously in PV. The intention of the patch is to avoid aggressive null move pruning (NMP) in positions that have previously been found to be important (PV nodes). If we already do not apply NMP for current PV nodes, it makes sense to apply it less often for positions that have previously been PV nodes too. STC: LLR: 2.96 (-2.94,2.94) {-1.00,3.00} Total: 14959 W: 2921 L: 2782 D: 9256 Ptnml(0-2): 254, 1679, 3493, 1762, 282 http://tests.stockfishchess.org/tests/view/5e2f6637ab2d69d58394fcfd LTC: LLR: 2.95 (-2.94,2.94) {0.00,2.00} Total: 6442 W: 899 L: 753 D: 4790 Ptnml(0-2): 42, 549, 1885, 659, 61 http://tests.stockfishchess.org/tests/view/5e2f767bab2d69d58394fd04 closes https://github.com/official-stockfish/Stockfish/pull/2525 Bench: 4725546
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