Dev Builds » 20230308-0616

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 09:36:19 1955349 3340 2867 3 470 +446.03 +/- 15.71
ncm-et-4 09:38:36 1957117 3341 2878 5 458 +449.25 +/- 15.92
ncm-et-9 09:36:27 1950387 3318 2846 7 465 +443.61 +/- 15.81
ncm-et-10 09:36:42 1953790 3305 2819 4 482 +438.62 +/- 15.51
ncm-et-13 09:36:56 1959135 3343 2871 2 470 +446.98 +/- 15.7
ncm-et-15 09:36:59 1957061 3353 2881 1 471 +447.93 +/- 15.68
20000 17162 22 2816 +445.39 +/- 6.41

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
175353 ncm-et-10 2023-03-08 21:40 00:52:40 1961566 305 253 2 50 +405.07 +/- 49.12
175352 ncm-et-9 2023-03-08 21:37 00:55:37 1943892 318 274 0 44 +451.54 +/- 52.44
175351 ncm-et-13 2023-03-08 21:35 00:58:19 1968813 343 285 0 58 +413.81 +/- 45.29
175346 ncm-et-3 2023-03-08 21:33 00:59:37 1949987 340 290 0 50 +440.14 +/- 49.01
175345 ncm-et-4 2023-03-08 21:33 00:59:48 1953765 341 296 0 45 +460.36 +/- 51.85
175343 ncm-et-15 2023-03-08 21:32 01:01:18 1953603 353 306 0 47 +458.71 +/- 50.68
175322 ncm-et-10 2023-03-08 20:13 01:26:03 1949515 500 435 0 65 +463.15 +/- 42.83
175321 ncm-et-9 2023-03-08 20:10 01:26:33 1947675 500 423 2 75 +426.65 +/- 39.83
175320 ncm-et-13 2023-03-08 20:07 01:26:36 1952987 500 437 0 63 +468.95 +/- 43.54
175319 ncm-et-3 2023-03-08 20:06 01:26:33 1941123 500 426 1 73 +436.43 +/- 40.36
175318 ncm-et-4 2023-03-08 20:05 01:27:17 1954071 500 438 0 62 +471.92 +/- 43.9
175317 ncm-et-15 2023-03-08 20:04 01:26:55 1958336 500 431 0 69 +452.04 +/- 41.5
175296 ncm-et-10 2023-03-08 18:46 01:27:12 1958469 500 413 0 87 +408.38 +/- 36.75
175295 ncm-et-9 2023-03-08 18:43 01:26:12 1959851 500 422 0 78 +429.05 +/- 38.92
175294 ncm-et-13 2023-03-08 18:40 01:26:45 1965560 500 431 0 69 +452.04 +/- 41.5
175293 ncm-et-3 2023-03-08 18:40 01:25:32 1960802 500 434 0 66 +460.32 +/- 42.48
175292 ncm-et-15 2023-03-08 18:37 01:26:04 1958668 500 432 1 67 +452.04 +/- 42.22
175291 ncm-et-4 2023-03-08 18:37 01:27:21 1954802 500 414 1 85 +408.38 +/- 37.27
175269 ncm-et-10 2023-03-08 17:17 01:27:54 1946019 500 413 0 87 +408.38 +/- 36.75
175268 ncm-et-9 2023-03-08 17:15 01:27:52 1947396 500 431 2 67 +446.7 +/- 42.25
175267 ncm-et-3 2023-03-08 17:13 01:26:19 1959873 500 424 2 74 +429.05 +/- 40.11
175265 ncm-et-15 2023-03-08 17:12 01:24:32 1959453 500 432 0 68 +454.76 +/- 41.82
175264 ncm-et-13 2023-03-08 17:12 01:27:22 1953129 500 428 2 70 +438.95 +/- 41.29
175258 ncm-et-4 2023-03-08 17:09 01:27:20 1951661 500 431 0 69 +452.04 +/- 41.5
175227 ncm-et-10 2023-03-08 15:48 01:28:24 1947516 500 436 1 63 +463.16 +/- 43.6
175226 ncm-et-9 2023-03-08 15:47 01:26:47 1943502 500 431 0 69 +452.04 +/- 41.5
175225 ncm-et-3 2023-03-08 15:46 01:26:31 1954520 500 434 0 66 +460.32 +/- 42.48
175224 ncm-et-15 2023-03-08 15:45 01:26:03 1963388 500 421 0 79 +426.65 +/- 38.66
175223 ncm-et-13 2023-03-08 15:45 01:26:31 1959175 500 427 0 73 +441.5 +/- 40.29
175222 ncm-et-4 2023-03-08 15:44 01:24:33 1962952 500 425 2 73 +431.48 +/- 40.4
175191 ncm-et-10 2023-03-08 14:20 01:26:48 1956812 500 431 1 68 +449.35 +/- 41.89
175190 ncm-et-15 2023-03-08 14:19 01:26:02 1952988 500 425 0 75 +436.43 +/- 39.73
175189 ncm-et-9 2023-03-08 14:18 01:28:08 1953449 500 418 1 81 +417.32 +/- 38.22
175188 ncm-et-3 2023-03-08 14:18 01:26:34 1955435 500 429 0 71 +446.7 +/- 40.89
175187 ncm-et-13 2023-03-08 14:17 01:27:09 1951323 500 434 0 66 +460.32 +/- 42.48
175185 ncm-et-4 2023-03-08 14:17 01:26:52 1958878 500 436 1 63 +463.16 +/- 43.6
175153 ncm-et-3 2023-03-08 12:53 01:25:13 1965704 500 430 0 70 +449.35 +/- 41.19
175152 ncm-et-9 2023-03-08 12:53 01:25:18 1956946 500 447 2 51 +494.03 +/- 48.72
175150 ncm-et-10 2023-03-08 12:52 01:27:41 1956638 500 438 0 62 +471.92 +/- 43.9
175149 ncm-et-15 2023-03-08 12:52 01:26:05 1952994 500 434 0 66 +460.32 +/- 42.48
175148 ncm-et-13 2023-03-08 12:52 01:24:14 1962960 500 429 0 71 +446.7 +/- 40.89
175147 ncm-et-4 2023-03-08 12:50 01:25:25 1963696 500 438 1 61 +468.96 +/- 44.35

Commit

Commit ID 39da50ed23ee3f1bd32a58c8f02471faa9a9fd63
Author Michael Chaly
Date 2023-03-08 06:16:09 UTC
Do more negative extensions This patch does negatively extend transposition table move if singular search failed and tt value is not bigger than alpha. Logic is close to what we had before recent simplification of negative extensions but uses or condition instead of and condition. Passed STC: https://tests.stockfishchess.org/tests/view/6404c8102644b62c33934607 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 119040 W: 31841 L: 31416 D: 55783 Ptnml(0-2): 356, 13070, 32292, 13397, 405 Passed LTC: https://tests.stockfishchess.org/tests/view/6405abda2644b62c33937119 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 47216 W: 12816 L: 12496 D: 21904 Ptnml(0-2): 12, 4500, 14286, 4776, 34 closes https://github.com/official-stockfish/Stockfish/pull/4430 bench 4747020
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