Dev Builds » 20210515-0816

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 08:19:37 1965035 3363 2715 18 630 +383.6 +/- 13.57
ncm-et-4 08:19:59 1959865 3318 2728 12 578 +400.4 +/- 14.16
ncm-et-9 08:19:37 1961883 3349 2683 10 656 +379.92 +/- 13.27
ncm-et-10 08:20:10 1953998 3302 2697 18 587 +392.91 +/- 14.06
ncm-et-13 08:19:32 1960114 3331 2663 11 657 +378.02 +/- 13.26
ncm-et-15 08:20:01 1956587 3337 2703 12 622 +387.98 +/- 13.64
20000 16189 81 3730 +386.97 +/- 5.57

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
146793 ncm-et-10 2021-05-16 17:13 00:46:26 1952385 302 255 3 44 +417.82 +/- 52.49
146792 ncm-et-4 2021-05-16 17:10 00:48:26 1956338 318 264 0 54 +413.01 +/- 47.0
146791 ncm-et-13 2021-05-16 17:09 00:49:40 1944240 331 262 0 69 +373.68 +/- 41.26
146790 ncm-et-15 2021-05-16 17:08 00:51:07 1956065 337 268 1 68 +374.38 +/- 41.71
146789 ncm-et-9 2021-05-16 17:06 00:52:43 1960343 349 284 2 63 +389.58 +/- 43.53
146788 ncm-et-3 2021-05-16 17:05 00:54:09 1970325 363 287 2 74 +367.79 +/- 40.0
146787 ncm-et-10 2021-05-16 15:56 01:15:28 1960312 500 408 4 88 +389.56 +/- 36.69
146786 ncm-et-15 2021-05-16 15:54 01:13:31 1957760 500 399 1 100 +377.87 +/- 34.22
146785 ncm-et-13 2021-05-16 15:53 01:14:59 1971410 500 399 4 97 +372.25 +/- 34.89
146784 ncm-et-4 2021-05-16 15:52 01:17:25 1956676 500 408 5 87 +387.57 +/- 36.91
146783 ncm-et-9 2021-05-16 15:51 01:14:22 1966152 500 402 2 96 +381.7 +/- 35.02
146782 ncm-et-3 2021-05-16 15:50 01:14:23 1962382 500 390 4 106 +356.21 +/- 33.31
146781 ncm-et-10 2021-05-16 14:39 01:16:30 1945258 500 398 2 100 +374.11 +/- 34.27
146780 ncm-et-15 2021-05-16 14:39 01:13:59 1961083 500 405 3 92 +385.59 +/- 35.84
146779 ncm-et-13 2021-05-16 14:38 01:14:21 1959695 500 403 0 97 +387.56 +/- 34.71
146778 ncm-et-4 2021-05-16 14:37 01:14:27 1968002 500 402 0 98 +385.59 +/- 34.52
146777 ncm-et-9 2021-05-16 14:37 01:13:46 1963841 500 393 2 105 +364.98 +/- 33.41
146776 ncm-et-3 2021-05-16 14:36 01:13:31 1971008 500 395 4 101 +364.98 +/- 34.16
146775 ncm-et-10 2021-05-16 13:23 01:16:12 1950699 500 412 2 86 +401.92 +/- 37.09
146774 ncm-et-15 2021-05-16 13:22 01:16:14 1953154 500 405 4 91 +383.64 +/- 36.06
146773 ncm-et-9 2021-05-16 13:22 01:14:21 1967881 500 410 1 89 +399.81 +/- 36.38
146772 ncm-et-4 2021-05-16 13:22 01:14:51 1971447 500 414 1 85 +408.38 +/- 37.27
146771 ncm-et-13 2021-05-16 13:21 01:16:16 1955422 500 408 0 92 +397.72 +/- 35.69
146770 ncm-et-3 2021-05-16 13:21 01:13:44 1965999 500 411 2 87 +399.81 +/- 36.87
146769 ncm-et-10 2021-05-16 12:07 01:14:47 1959544 500 401 4 95 +375.98 +/- 35.27
146768 ncm-et-4 2021-05-16 12:07 01:14:32 1949605 500 412 2 86 +401.92 +/- 37.09
146767 ncm-et-15 2021-05-16 12:06 01:15:05 1955773 500 416 2 82 +410.58 +/- 38.02
146766 ncm-et-3 2021-05-16 12:06 01:14:26 1966316 500 419 0 81 +421.93 +/- 38.15
146765 ncm-et-9 2021-05-16 12:06 01:15:00 1946609 500 402 1 97 +383.64 +/- 34.77
146764 ncm-et-13 2021-05-16 12:06 01:14:52 1963230 500 404 2 94 +385.59 +/- 35.4
146763 ncm-et-10 2021-05-16 10:52 01:14:53 1951612 500 413 2 85 +404.05 +/- 37.32
146762 ncm-et-9 2021-05-16 10:51 01:14:37 1964956 500 389 1 110 +359.68 +/- 32.55
146761 ncm-et-13 2021-05-16 10:51 01:14:43 1961851 500 398 4 98 +370.41 +/- 34.7
146760 ncm-et-4 2021-05-16 10:50 01:15:30 1956657 500 405 2 93 +387.57 +/- 35.6
146759 ncm-et-15 2021-05-16 10:50 01:15:19 1953035 500 402 0 98 +385.59 +/- 34.52
146758 ncm-et-3 2021-05-16 10:50 01:15:58 1948740 500 404 3 93 +383.64 +/- 35.64
146757 ncm-et-3 2021-05-16 09:36 01:13:26 1970478 500 409 3 88 +393.6 +/- 36.68
146756 ncm-et-9 2021-05-16 09:35 01:14:48 1963401 500 403 1 96 +385.59 +/- 34.96
146755 ncm-et-13 2021-05-16 09:35 01:14:41 1964954 500 389 1 110 +359.68 +/- 32.55
146754 ncm-et-10 2021-05-16 09:35 01:15:54 1958179 500 410 1 89 +399.81 +/- 36.38
146753 ncm-et-4 2021-05-16 09:35 01:14:48 1960334 500 423 2 75 +426.65 +/- 39.83
146752 ncm-et-15 2021-05-16 09:35 01:14:46 1959241 500 408 1 91 +395.65 +/- 35.96

Commit

Commit ID c82f6f56a65759461f417602059ad7c97b9451aa
Author bmc4
Date 2021-05-15 08:16:01 UTC
Simplify LMR rules for statScore We simplify two parts of LMR which seem not to bring strength anymore. --- Individual Tests: https://tests.stockfishchess.org/tests/view/609d1cc15085663412d0856a https://tests.stockfishchess.org/tests/view/609cb0cc7746e3dc74ffae8d https://tests.stockfishchess.org/tests/view/609d1c9f5085663412d08568 --- LTC: LLR: 2.97 (-2.94,2.94) <-2.50,0.50> Total: 84184 W: 3093 L: 3066 D: 78025 Ptnml(0-2): 47, 2755, 36458, 2788, 44 https://tests.stockfishchess.org/tests/view/609d84615085663412d08e2f --- While at it, we also update the Elo estimate of the previous rule in LMR, see: https://tests.stockfishchess.org/tests/view/609a933c3a33eb67a844f7ca https://tests.stockfishchess.org/tests/view/609a959c3a33eb67a844f7d5 https://tests.stockfishchess.org/tests/view/609afff73a33eb67a844f870 --- closes https://github.com/official-stockfish/Stockfish/pull/3464 Bench: 4156523
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