Dev Builds » 20210220-2122

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 08:23:00 1963844 3359 2710 16 633 +383.66 +/- 13.53
ncm-et-4 08:22:53 1959320 3350 2712 8 630 +388.72 +/- 13.54
ncm-et-9 08:22:33 1961395 3328 2643 16 669 +371.67 +/- 13.15
ncm-et-10 08:22:38 1961464 3323 2709 11 603 +393.52 +/- 13.86
ncm-et-13 08:22:31 1959473 3320 2619 21 680 +365.46 +/- 13.05
ncm-et-15 08:22:42 1952318 3320 2672 18 630 +381.12 +/- 13.57
20000 16065 90 3845 +380.49 +/- 5.48

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
144824 ncm-et-9 2021-02-21 14:16 00:48:20 1960334 328 250 5 73 +335.63 +/- 40.33
144823 ncm-et-13 2021-02-21 14:16 00:48:30 1963409 320 260 1 59 +390.94 +/- 44.95
144822 ncm-et-15 2021-02-21 14:15 00:49:12 1948923 320 262 1 57 +397.33 +/- 45.78
144821 ncm-et-10 2021-02-21 14:15 00:49:43 1960622 323 264 1 58 +395.9 +/- 45.37
144820 ncm-et-4 2021-02-21 14:12 00:52:36 1968157 350 280 0 70 +381.69 +/- 40.99
144819 ncm-et-3 2021-02-21 14:12 00:53:20 1954204 359 286 2 71 +373.26 +/- 40.88
144818 ncm-et-13 2021-02-21 13:01 01:14:50 1965841 500 407 2 91 +391.57 +/- 36.01
144817 ncm-et-10 2021-02-21 13:00 01:14:10 1964937 500 408 1 91 +395.65 +/- 35.96
144816 ncm-et-15 2021-02-21 12:59 01:15:25 1959729 500 398 1 101 +375.98 +/- 34.04
144815 ncm-et-9 2021-02-21 12:59 01:16:34 1955892 500 402 1 97 +383.64 +/- 34.77
144814 ncm-et-4 2021-02-21 12:58 01:13:27 1965998 500 411 1 88 +401.92 +/- 36.6
144813 ncm-et-3 2021-02-21 12:56 01:14:46 1968474 500 395 3 102 +366.78 +/- 33.96
144812 ncm-et-13 2021-02-21 11:44 01:15:53 1954044 500 384 2 114 +349.43 +/- 31.99
144811 ncm-et-15 2021-02-21 11:43 01:15:23 1955420 500 389 2 109 +357.94 +/- 32.76
144810 ncm-et-9 2021-02-21 11:43 01:15:05 1967430 500 392 2 106 +363.2 +/- 33.24
144809 ncm-et-10 2021-02-21 11:42 01:16:49 1958019 500 400 4 96 +374.11 +/- 35.07
144808 ncm-et-3 2021-02-21 11:41 01:14:38 1960465 500 404 1 95 +387.57 +/- 35.16
144807 ncm-et-4 2021-02-21 11:41 01:16:31 1955568 500 395 1 104 +370.41 +/- 33.52
144806 ncm-et-13 2021-02-21 10:30 01:13:57 1965074 500 380 2 118 +342.85 +/- 31.41
144805 ncm-et-4 2021-02-21 10:27 01:12:48 1971110 500 394 3 103 +364.98 +/- 33.79
144804 ncm-et-10 2021-02-21 10:27 01:14:55 1962151 500 408 3 89 +391.57 +/- 36.46
144803 ncm-et-9 2021-02-21 10:26 01:16:42 1955114 500 403 2 95 +383.64 +/- 35.21
144802 ncm-et-15 2021-02-21 10:25 01:17:13 1928545 500 408 5 87 +387.57 +/- 36.91
144801 ncm-et-3 2021-02-21 10:25 01:15:09 1973581 500 409 1 90 +397.72 +/- 36.17
144800 ncm-et-13 2021-02-21 09:13 01:16:02 1956792 500 397 0 103 +375.98 +/- 33.63
144799 ncm-et-15 2021-02-21 09:11 01:13:43 1963688 500 403 4 93 +379.78 +/- 35.66
144798 ncm-et-10 2021-02-21 09:11 01:15:17 1966463 500 409 0 91 +399.81 +/- 35.89
144797 ncm-et-9 2021-02-21 09:10 01:14:58 1962823 500 406 3 91 +387.57 +/- 36.04
144796 ncm-et-4 2021-02-21 09:10 01:17:10 1948333 500 418 1 81 +417.32 +/- 38.22
144795 ncm-et-3 2021-02-21 09:09 01:15:51 1958797 500 407 3 90 +389.56 +/- 36.25
144794 ncm-et-13 2021-02-21 07:56 01:16:23 1957112 500 402 5 93 +375.98 +/- 35.66
144793 ncm-et-15 2021-02-21 07:55 01:15:58 1956795 500 404 2 94 +385.59 +/- 35.4
144792 ncm-et-10 2021-02-21 07:54 01:16:21 1956186 500 414 1 85 +408.38 +/- 37.27
144791 ncm-et-9 2021-02-21 07:54 01:15:39 1960007 500 391 0 109 +364.98 +/- 32.64
144790 ncm-et-3 2021-02-21 07:53 01:15:14 1955317 500 394 6 100 +359.68 +/- 34.36
144789 ncm-et-4 2021-02-21 07:52 01:16:41 1938690 500 407 1 92 +393.6 +/- 35.75
144788 ncm-et-13 2021-02-21 06:38 01:16:56 1954042 500 389 9 102 +346.12 +/- 33.99
144787 ncm-et-15 2021-02-21 06:38 01:15:48 1953130 500 408 3 89 +391.57 +/- 36.46
144786 ncm-et-9 2021-02-21 06:38 01:15:15 1968165 500 399 3 98 +374.11 +/- 34.68
144785 ncm-et-3 2021-02-21 06:38 01:14:02 1976072 500 415 0 85 +412.8 +/- 37.2
144784 ncm-et-10 2021-02-21 06:38 01:15:23 1961872 500 406 1 93 +391.57 +/- 35.55
144783 ncm-et-4 2021-02-21 06:38 01:13:40 1967386 500 407 1 92 +393.6 +/- 35.75

Commit

Commit ID 6294db7514798ac12536b4d6e77bc591f7e846da
Author Vizvezdenec
Date 2021-02-20 21:22:07 UTC
Tune search parameters (with Unai Corzo) The values used in this patch are taken from a SPSA parameter tuning session originated by Unai Corzo (@unaiic), but the final difference of his tune was multiplied x2 by hand. Most of the credits should go to him :-) STC: https://tests.stockfishchess.org/tests/view/602f03d07f517a561bc49d40 LLR: 2.94 (-2.94,2.94) {-0.25,1.25} Total: 67664 W: 6252 L: 6035 D: 55377 Ptnml(0-2): 256, 4799, 23527, 4972, 278 LTC: https://tests.stockfishchess.org/tests/view/602f41697f517a561bc49d5a LLR: 2.96 (-2.94,2.94) {0.25,1.25} Total: 26256 W: 1034 L: 906 D: 24316 Ptnml(0-2): 10, 804, 11377, 922, 15 Closes https://github.com/official-stockfish/Stockfish/pull/3363 Bench: 3957653
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