Dev Builds » 20200824-1009

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 08:37:24 1963648 3336 2494 40 802 +326.88 +/- 12.02
ncm-et-4 08:37:03 1964477 3357 2454 44 859 +313.84 +/- 11.61
ncm-et-9 08:37:11 1964669 3343 2446 50 847 +312.99 +/- 11.7
ncm-et-10 08:37:31 1961526 3316 2451 35 830 +321.63 +/- 11.8
ncm-et-13 08:36:57 1961056 3317 2458 36 823 +322.81 +/- 11.86
ncm-et-15 08:37:06 1968502 3331 2431 31 869 +315.71 +/- 11.52
20000 14734 236 5030 +318.91 +/- 4.79

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
136075 ncm-et-10 2020-08-25 16:45 00:49:24 1960936 316 233 3 80 +321.08 +/- 38.35
136074 ncm-et-13 2020-08-25 16:44 00:50:26 1958470 317 226 3 88 +303.71 +/- 36.45
136073 ncm-et-3 2020-08-25 16:43 00:51:17 1962766 336 248 5 83 +317.68 +/- 37.73
136072 ncm-et-15 2020-08-25 16:43 00:51:24 1968790 331 239 4 88 +308.22 +/- 36.54
136071 ncm-et-9 2020-08-25 16:42 00:52:24 1959705 343 247 7 89 +301.13 +/- 36.41
136070 ncm-et-4 2020-08-25 16:40 00:54:15 1960169 357 254 7 96 +295.86 +/- 35.02
136069 ncm-et-10 2020-08-25 15:25 01:19:19 1960921 500 360 7 133 +305.45 +/- 29.65
136068 ncm-et-3 2020-08-25 15:25 01:17:23 1966306 500 372 8 120 +321.19 +/- 31.29
136067 ncm-et-13 2020-08-25 15:24 01:18:23 1956483 500 369 4 127 +322.67 +/- 30.3
136066 ncm-et-9 2020-08-25 15:23 01:17:49 1967852 500 375 5 120 +330.23 +/- 31.24
136065 ncm-et-15 2020-08-25 15:23 01:18:49 1966923 500 348 2 150 +295.94 +/- 27.62
136064 ncm-et-4 2020-08-25 15:23 01:15:49 1966941 500 349 10 141 +286.77 +/- 28.8
136063 ncm-et-3 2020-08-25 14:07 01:17:04 1963391 500 387 2 111 +354.5 +/- 32.44
136062 ncm-et-13 2020-08-25 14:06 01:16:46 1962609 500 378 12 110 +324.17 +/- 32.67
136061 ncm-et-9 2020-08-25 14:05 01:16:59 1963078 500 370 8 122 +318.25 +/- 31.03
136060 ncm-et-4 2020-08-25 14:05 01:17:12 1973738 500 363 7 130 +309.64 +/- 30.0
136059 ncm-et-10 2020-08-25 14:04 01:19:13 1954804 500 365 5 130 +315.35 +/- 29.96
136058 ncm-et-15 2020-08-25 14:04 01:17:50 1968019 500 365 8 127 +311.06 +/- 30.39
136057 ncm-et-3 2020-08-25 12:48 01:17:27 1963073 500 361 10 129 +302.7 +/- 30.16
136056 ncm-et-13 2020-08-25 12:48 01:17:39 1959388 500 374 4 122 +330.23 +/- 30.94
136055 ncm-et-9 2020-08-25 12:46 01:17:42 1961075 500 364 4 132 +315.35 +/- 29.68
136054 ncm-et-15 2020-08-25 12:46 01:17:00 1974514 500 376 11 113 +322.67 +/- 32.25
136053 ncm-et-10 2020-08-25 12:46 01:17:08 1963702 500 370 4 126 +324.17 +/- 30.42
136052 ncm-et-4 2020-08-25 12:46 01:18:06 1968483 500 378 7 115 +331.77 +/- 31.98
136051 ncm-et-3 2020-08-25 11:30 01:16:50 1965225 500 381 3 116 +342.85 +/- 31.74
136050 ncm-et-13 2020-08-25 11:30 01:16:40 1963378 500 376 4 120 +333.32 +/- 31.22
136049 ncm-et-15 2020-08-25 11:29 01:15:53 1965393 500 356 3 141 +305.45 +/- 28.61
136048 ncm-et-4 2020-08-25 11:28 01:16:28 1966480 500 375 7 118 +327.18 +/- 31.56
136047 ncm-et-9 2020-08-25 11:28 01:17:19 1965225 500 355 14 131 +289.36 +/- 29.92
136046 ncm-et-10 2020-08-25 11:28 01:17:24 1964783 500 382 2 116 +346.12 +/- 31.7
136045 ncm-et-13 2020-08-25 10:11 01:17:43 1963383 500 369 5 126 +321.19 +/- 30.45
136044 ncm-et-3 2020-08-25 10:11 01:18:12 1960324 500 371 8 121 +319.72 +/- 31.16
136043 ncm-et-15 2020-08-25 10:11 01:17:33 1970332 500 380 3 117 +341.24 +/- 31.6
136042 ncm-et-10 2020-08-25 10:09 01:17:22 1959542 500 376 6 118 +330.23 +/- 31.54
136041 ncm-et-9 2020-08-25 10:09 01:17:54 1975139 500 367 5 128 +318.25 +/- 30.2
136040 ncm-et-4 2020-08-25 10:08 01:18:48 1946906 500 376 0 124 +339.63 +/- 30.48
136039 ncm-et-15 2020-08-25 08:51 01:18:37 1965548 500 367 0 133 +325.66 +/- 29.36
136038 ncm-et-9 2020-08-25 08:51 01:17:04 1960615 500 368 7 125 +316.8 +/- 30.63
136037 ncm-et-4 2020-08-25 08:51 01:16:25 1968628 500 359 6 135 +305.45 +/- 29.39
136036 ncm-et-13 2020-08-25 08:51 01:19:20 1963687 500 366 4 130 +318.25 +/- 29.92
136035 ncm-et-10 2020-08-25 08:51 01:17:41 1965997 500 365 8 127 +311.06 +/- 30.39
136034 ncm-et-3 2020-08-25 08:51 01:19:11 1964455 500 374 4 122 +330.23 +/- 30.94

Commit

Commit ID 843a961a8c10d5949e04718b829e3b3d5adeedb4
Author Vizvezdenec
Date 2020-08-24 10:09:04 UTC
Introduce countermove based pruning for qsearch This patch continues work of previous patch in introducing pruning heuristics in qsearch by analogy to main search, now with countermove based pruning. Idea is that if move is late enough and is quite check (we do generate them in qsearch) and has bad enough countermove history - prune it. passed STC https://tests.stockfishchess.org/tests/view/5f41220287a5c3c63d8f53c5 LLR: 2.93 (-2.94,2.94) {-0.25,1.25} Total: 35944 W: 4127 L: 3929 D: 27888 Ptnml(0-2): 196, 2970, 11459, 3134, 213 passed LTC https://tests.stockfishchess.org/tests/view/5f41862f87a5c3c63d8f53e8 LLR: 2.95 (-2.94,2.94) {0.25,1.25} Total: 138448 W: 7655 L: 7252 D: 123541 Ptnml(0-2): 145, 6247, 56043, 6638, 151 closes https://github.com/official-stockfish/Stockfish/pull/3058 Bench: 3610676
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