Dev Builds » 20210822-0700

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 08:20:01 1958585 3327 2744 8 575 +404.44 +/- 14.19
ncm-et-4 08:19:51 1963666 3359 2837 2 520 +429.06 +/- 14.92
ncm-et-9 08:20:16 1962643 3353 2829 6 518 +426.57 +/- 14.96
ncm-et-10 08:20:00 1952418 3299 2782 4 513 +426.74 +/- 15.03
ncm-et-13 08:20:04 1958807 3315 2798 7 510 +426.57 +/- 15.08
ncm-et-15 08:19:55 1959480 3347 2835 4 508 +431.28 +/- 15.1
20000 16825 31 3144 +423.93 +/- 6.06

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
151106 ncm-et-10 2021-08-23 23:08 00:46:19 1947532 299 257 0 42 +448.72 +/- 53.73
151105 ncm-et-13 2021-08-23 23:07 00:47:17 1961849 315 271 0 44 +449.77 +/- 52.43
151104 ncm-et-3 2021-08-23 23:04 00:50:18 1950129 327 271 2 54 +404.73 +/- 47.19
151103 ncm-et-15 2021-08-23 23:02 00:52:14 1952226 347 286 0 61 +406.42 +/- 44.1
151102 ncm-et-9 2021-08-23 23:02 00:53:10 1965386 353 301 1 51 +436.25 +/- 48.62
151101 ncm-et-4 2021-08-23 22:59 00:55:04 1958012 359 305 0 54 +435.9 +/- 47.07
151100 ncm-et-10 2021-08-23 21:52 01:15:27 1955417 500 426 0 74 +438.95 +/- 40.01
151099 ncm-et-13 2021-08-23 21:50 01:16:50 1958936 500 418 2 80 +415.05 +/- 38.52
151098 ncm-et-3 2021-08-23 21:50 01:13:55 1962920 500 411 1 88 +401.92 +/- 36.6
151097 ncm-et-15 2021-08-23 21:47 01:14:15 1960770 500 419 2 79 +417.32 +/- 38.77
151096 ncm-et-9 2021-08-23 21:46 01:14:36 1960320 500 432 0 68 +454.76 +/- 41.82
151095 ncm-et-4 2021-08-23 21:45 01:14:08 1959877 500 430 0 70 +449.35 +/- 41.19
151094 ncm-et-10 2021-08-23 20:36 01:15:48 1939186 500 430 0 70 +449.35 +/- 41.19
151093 ncm-et-13 2021-08-23 20:34 01:14:57 1959250 500 427 1 72 +438.95 +/- 40.66
151092 ncm-et-3 2021-08-23 20:34 01:14:59 1964926 500 420 1 79 +421.93 +/- 38.73
151091 ncm-et-15 2021-08-23 20:31 01:15:41 1953787 500 442 1 57 +481.1 +/- 45.96
151090 ncm-et-9 2021-08-23 20:31 01:15:12 1959541 500 422 0 78 +429.05 +/- 38.92
151089 ncm-et-4 2021-08-23 20:30 01:13:49 1961844 500 414 1 85 +408.38 +/- 37.27
151088 ncm-et-10 2021-08-23 19:21 01:13:58 1960013 500 416 1 83 +412.8 +/- 37.74
151087 ncm-et-3 2021-08-23 19:18 01:15:23 1952388 500 411 2 87 +399.81 +/- 36.87
151086 ncm-et-13 2021-08-23 19:17 01:16:15 1958026 500 429 0 71 +446.7 +/- 40.89
151085 ncm-et-15 2021-08-23 19:16 01:14:04 1960643 500 431 0 69 +452.04 +/- 41.5
151084 ncm-et-9 2021-08-23 19:16 01:14:04 1968625 500 422 2 76 +424.28 +/- 39.56
151083 ncm-et-4 2021-08-23 19:15 01:14:20 1965454 500 418 0 82 +419.61 +/- 37.91
151082 ncm-et-10 2021-08-23 18:04 01:16:14 1956804 500 420 2 78 +419.61 +/- 39.03
151081 ncm-et-15 2021-08-23 18:02 01:13:52 1961847 500 420 1 79 +421.93 +/- 38.73
151080 ncm-et-3 2021-08-23 18:02 01:15:46 1958795 500 413 0 87 +408.38 +/- 36.75
151079 ncm-et-13 2021-08-23 18:01 01:15:44 1954350 500 422 1 77 +426.65 +/- 39.25
151078 ncm-et-4 2021-08-23 18:01 01:14:10 1966930 500 428 0 72 +444.08 +/- 40.59
151077 ncm-et-9 2021-08-23 17:59 01:16:05 1958320 500 422 1 77 +426.65 +/- 39.25
151076 ncm-et-10 2021-08-23 16:47 01:16:10 1956790 500 411 1 88 +401.92 +/- 36.6
151075 ncm-et-15 2021-08-23 16:47 01:14:42 1967850 500 419 0 81 +421.93 +/- 38.15
151074 ncm-et-4 2021-08-23 16:46 01:13:57 1969704 500 415 1 84 +410.58 +/- 37.5
151073 ncm-et-13 2021-08-23 16:46 01:14:49 1957705 500 423 2 75 +426.65 +/- 39.83
151072 ncm-et-3 2021-08-23 16:45 01:15:33 1957252 500 407 1 92 +393.6 +/- 35.75
151071 ncm-et-9 2021-08-23 16:45 01:13:40 1962926 500 410 2 88 +397.72 +/- 36.65
151070 ncm-et-4 2021-08-23 15:31 01:14:23 1963844 500 427 0 73 +441.5 +/- 40.29
151069 ncm-et-15 2021-08-23 15:31 01:15:07 1959239 500 418 0 82 +419.61 +/- 37.91
151068 ncm-et-13 2021-08-23 15:31 01:14:12 1961538 500 408 1 91 +395.65 +/- 35.96
151067 ncm-et-9 2021-08-23 15:31 01:13:29 1963387 500 420 0 80 +424.27 +/- 38.4
151066 ncm-et-10 2021-08-23 15:31 01:16:04 1951189 500 422 0 78 +429.05 +/- 38.92
151065 ncm-et-3 2021-08-23 15:31 01:14:07 1963690 500 411 1 88 +401.92 +/- 36.6

Commit

Commit ID e57d2d9d4714fd085042f88a037be93772956105
Author bmc4
Date 2021-08-22 07:00:15 UTC
Simplify Null Move Search Reduction slightly simpler formula for reduction computation. first round of tests: STC: LLR: 2.97 (-2.94,2.94) <-2.50,0.50> Total: 15632 W: 1319 L: 1204 D: 13109 Ptnml(0-2): 33, 956, 5733, 1051, 43 https://tests.stockfishchess.org/tests/view/60bd03c7457376eb8bcaa600 LTC: LLR: 3.37 (-2.94,2.94) <-2.50,0.50> Total: 86296 W: 2814 L: 2779 D: 80703 Ptnml(0-2): 33, 2500, 38039, 2551, 25 https://tests.stockfishchess.org/tests/view/60bd1ff0457376eb8bcaa653 recent tests: STC: LLR: 2.93 (-2.94,2.94) <-2.50,0.50> Total: 23936 W: 1895 L: 1793 D: 20248 Ptnml(0-2): 40, 1470, 8869, 1526, 63 https://tests.stockfishchess.org/tests/view/611f9b7d4977aa1525c9cb6b LTC: LLR: 2.95 (-2.94,2.94) <-2.50,0.50> Total: 62568 W: 1750 L: 1713 D: 59105 Ptnml(0-2): 19, 1560, 28085, 1605, 15 https://tests.stockfishchess.org/tests/view/611fa4814977aa1525c9cb71 functional on high depth closes https://github.com/official-stockfish/Stockfish/pull/3535 Bench: 5375286
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