Dev Builds » 20121225-1817

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 06:38:31 1990189 2772 56 1927 789 -284.83 +/- 12.12
ncm-et-4 06:38:28 1965837 2739 37 1941 761 -298.04 +/- 12.32
ncm-et-7 02:38:00 2023883 1124 18 759 347 -274.99 +/- 18.24
ncm-et-9 06:38:25 1977794 2783 36 1931 816 -288.66 +/- 11.88
ncm-et-10 06:38:27 1987126 2764 60 1908 796 -280.8 +/- 12.07
ncm-et-11 02:37:58 2024427 1129 25 769 335 -274.83 +/- 18.62
ncm-et-12 02:37:48 1986934 1090 18 771 301 -295.16 +/- 19.64
ncm-et-13 06:38:20 1995810 2803 40 1920 843 -282.13 +/- 11.69
ncm-et-15 06:38:09 1988530 2796 53 1930 813 -282.51 +/- 11.93
20000 343 13856 5801 -285.27 +/- 4.46

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
114140 ncm-et-10 2020-02-02 06:14 00:21:04 1967079 141 4 100 37 -288.61 +/- 57.17
114139 ncm-et-4 2020-02-02 06:13 00:22:32 1965541 155 5 107 43 -274.26 +/- 52.83
114138 ncm-et-3 2020-02-02 06:12 00:23:23 1965071 156 5 110 41 -283.63 +/- 54.15
114137 ncm-et-15 2020-02-02 06:10 00:25:45 1963081 181 3 112 66 -242.03 +/- 41.89
114136 ncm-et-13 2020-02-02 06:09 00:26:17 1966771 180 1 124 55 -290.23 +/- 46.06
114135 ncm-et-9 2020-02-02 06:09 00:26:32 1969553 186 2 136 48 -315.66 +/- 49.87
114134 ncm-et-4 2020-02-02 05:00 01:11:44 1974863 500 6 352 142 -295.94 +/- 28.61
114133 ncm-et-10 2020-02-02 04:59 01:13:50 1957704 500 14 344 142 -275.45 +/- 28.72
114132 ncm-et-3 2020-02-02 04:58 01:12:25 1963532 500 11 345 144 -280.42 +/- 28.5
114131 ncm-et-13 2020-02-02 04:57 01:10:53 1973736 500 5 327 168 -265.78 +/- 26.09
114130 ncm-et-15 2020-02-02 04:57 01:11:34 1967393 500 10 352 138 -290.66 +/- 29.13
114129 ncm-et-9 2020-02-02 04:55 01:12:33 1968183 500 5 361 134 -309.64 +/- 29.48
114128 ncm-et-10 2020-02-02 03:47 01:11:39 1965076 500 15 344 141 -274.22 +/- 28.82
114127 ncm-et-4 2020-02-02 03:45 01:13:38 1943406 500 5 353 142 -298.62 +/- 28.58
114126 ncm-et-3 2020-02-02 03:45 01:12:06 1961228 500 10 335 155 -269.37 +/- 27.4
114125 ncm-et-15 2020-02-02 03:44 01:11:29 1963993 500 13 342 145 -274.22 +/- 28.41
114124 ncm-et-13 2020-02-02 03:44 01:12:03 1977317 500 7 360 133 -305.45 +/- 29.65
114123 ncm-et-9 2020-02-02 03:44 01:10:30 1967732 500 8 343 149 -281.68 +/- 27.94
114122 ncm-et-15 2020-02-02 02:32 01:11:30 1969088 500 11 342 147 -276.69 +/- 28.19
114121 ncm-et-4 2020-02-02 02:32 01:12:30 1972347 500 5 344 151 -286.77 +/- 27.65
114120 ncm-et-9 2020-02-02 02:32 01:10:47 1967396 500 4 337 159 -279.17 +/- 26.85
114119 ncm-et-13 2020-02-02 02:32 01:11:05 1974983 500 8 342 150 -280.42 +/- 27.84
114118 ncm-et-3 2020-02-02 02:32 01:12:28 1964611 500 7 358 135 -302.7 +/- 29.42
114117 ncm-et-10 2020-02-02 02:32 01:13:52 1958166 500 12 340 148 -273.0 +/- 28.11
41666 ncm-et-4 2018-06-17 14:28 00:11:55 2000521 84 0 60 24 -311.25 +/- 70.95
41665 ncm-et-12 2018-06-17 14:27 00:13:05 2021325 90 3 64 23 -286.63 +/- 73.41
41664 ncm-et-9 2018-06-17 14:26 00:14:29 2024754 97 3 66 28 -269.06 +/- 66.11
41663 ncm-et-3 2018-06-17 14:24 00:16:16 2026559 116 2 80 34 -283.21 +/- 59.6
41662 ncm-et-15 2018-06-17 14:24 00:16:28 2019045 115 0 85 30 -329.55 +/- 63.25
41661 ncm-et-10 2018-06-17 14:23 00:17:34 2020837 123 2 81 40 -264.76 +/- 54.51
41660 ncm-et-13 2018-06-17 14:23 00:17:37 2027377 123 1 90 32 -317.94 +/- 61.55
41659 ncm-et-11 2018-06-17 14:23 00:17:48 2025081 129 1 93 35 -310.48 +/- 58.61
41658 ncm-et-7 2018-06-17 14:22 00:17:45 2024754 124 2 80 42 -257.04 +/- 53.04
41657 ncm-et-4 2018-06-17 13:15 01:12:21 2001133 500 9 370 121 -316.8 +/- 31.16
41656 ncm-et-12 2018-06-17 13:15 01:11:21 1993676 500 7 361 132 -306.84 +/- 29.77
41655 ncm-et-3 2018-06-17 13:13 01:09:52 2025408 500 10 348 142 -285.49 +/- 28.7
41654 ncm-et-11 2018-06-17 13:12 01:09:06 2022793 500 11 344 145 -279.17 +/- 28.4
41653 ncm-et-15 2018-06-17 13:12 01:10:33 2018721 500 10 346 144 -282.94 +/- 28.49
41652 ncm-et-13 2018-06-17 13:12 01:09:50 2025411 500 7 344 149 -284.22 +/- 27.92
41651 ncm-et-7 2018-06-17 13:12 01:09:43 2022467 500 6 348 146 -290.66 +/- 28.19
41650 ncm-et-9 2018-06-17 13:11 01:13:14 1921371 500 7 334 159 -271.78 +/- 26.96
41649 ncm-et-10 2018-06-17 13:10 01:11:20 2022304 500 4 348 148 -293.29 +/- 27.92
41648 ncm-et-12 2018-06-17 12:00 01:13:22 1945803 500 8 346 146 -285.49 +/- 28.24
41647 ncm-et-11 2018-06-17 12:00 01:11:04 2025408 500 13 332 155 -262.24 +/- 27.45
41646 ncm-et-15 2018-06-17 12:00 01:10:50 2018395 500 6 351 143 -294.61 +/- 28.51
41645 ncm-et-13 2018-06-17 12:00 01:10:35 2025081 500 11 333 156 -265.78 +/- 27.33
41644 ncm-et-9 2018-06-17 12:00 01:10:20 2025572 500 7 354 139 -297.28 +/- 28.97
41643 ncm-et-7 2018-06-17 12:00 01:10:32 2024428 500 10 331 159 -264.6 +/- 27.03
41642 ncm-et-3 2018-06-17 12:00 01:12:01 2024917 500 11 351 138 -288.06 +/- 29.14
41641 ncm-et-10 2018-06-17 12:00 01:09:08 2018720 500 9 351 140 -290.66 +/- 28.9
41640 ncm-et-4 2018-06-17 12:00 01:13:48 1903051 500 7 355 138 -298.62 +/- 29.08

Commit

Commit ID 894c43a1d648d4cf160de006bde59aa5b6ba0190
Author Marco Costalba
Date 2012-12-25 18:17:27 UTC
Introduce Null Threat extension In case of null search at low depths returns a fail low due to a threat then, rather than return beta-1 (to cause a re-search at full depth in the parent node), we set a flag threatExtension = true (false by default) that will cause moves that prevent the threat to be extended of one ply in the following search. Idea and patch is by Lucas Braesch. Lucas also did the tests: 1500 games in 5"+0.05": SF_threatExtension vs SF_20121222: 366 - 331 - 803 [51.2%] LOS=90.8% 3000 games in 10"+0.1": SF_threatExtension vs SF_20121222: 610 - 559 - 1831 [50.8%] LOS=93.2% Tests confirmed by Gary after 10570 games, ELO: 2.79 +- 99%: 8.72 95%: 6.63 LOS: 94.08% Wins: 1523 Losses: 1438 Draws: 7607 And finally by me at 15"+0.05, single thread, 3824 games threatExtension vs master 768 - 692 - 2364 +7 ELO bench 4918443
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