Dev Builds » 20210723-1647

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 08:19:53 1965266 3357 2821 7 529 +422.22 +/- 14.8
ncm-et-4 08:20:07 1953716 3295 2778 4 513 +426.51 +/- 15.03
ncm-et-9 08:20:26 1964083 3347 2771 10 566 +407.2 +/- 14.31
ncm-et-10 08:20:41 1951296 3293 2746 6 541 +415.12 +/- 14.63
ncm-et-13 08:20:04 1960858 3343 2818 7 518 +425.3 +/- 14.96
ncm-et-15 08:20:36 1960914 3365 2763 7 595 +400.88 +/- 13.94
20000 16697 41 3262 +415.95 +/- 5.95

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
150266 ncm-et-3 2021-07-25 02:34 00:32:56 1963581 221 193 1 27 +461.42 +/- 68.27
150265 ncm-et-4 2021-07-25 02:34 00:33:33 1975145 222 192 0 30 +455.94 +/- 64.29
150264 ncm-et-15 2021-07-25 02:34 00:33:27 1946673 216 179 0 37 +411.35 +/- 57.27
150263 ncm-et-10 2021-07-25 02:34 00:33:31 1952998 214 184 0 30 +449.09 +/- 64.25
150262 ncm-et-9 2021-07-25 02:34 00:33:30 1969269 226 193 0 33 +441.47 +/- 61.02
150261 ncm-et-13 2021-07-25 02:34 00:33:37 1959403 221 191 0 30 +455.1 +/- 64.28
150218 ncm-et-10 2021-07-24 17:58 00:12:08 1968313 79 66 1 12 +404.89 +/- 107.57
150217 ncm-et-4 2021-07-24 17:58 00:12:06 1941158 73 64 0 9 +472.95 +/- 130.62
150216 ncm-et-9 2021-07-24 17:52 00:17:53 1968945 121 102 0 19 +427.8 +/- 82.38
150215 ncm-et-13 2021-07-24 17:51 00:19:08 1954502 122 98 0 24 +384.87 +/- 71.99
150214 ncm-et-3 2021-07-24 17:50 00:20:35 1966463 136 117 0 19 +449.73 +/- 82.6
150213 ncm-et-15 2021-07-24 17:48 00:22:41 1964615 149 118 0 31 +374.05 +/- 62.63
150212 ncm-et-4 2021-07-24 16:42 01:15:13 1945401 500 427 0 73 +441.5 +/- 40.29
150211 ncm-et-10 2021-07-24 16:42 01:15:59 1949483 500 413 0 87 +408.38 +/- 36.75
150210 ncm-et-9 2021-07-24 16:37 01:14:54 1964011 500 419 1 80 +419.61 +/- 38.47
150209 ncm-et-13 2021-07-24 16:36 01:14:46 1962305 500 418 2 80 +415.05 +/- 38.52
150208 ncm-et-3 2021-07-24 16:34 01:14:37 1965550 500 413 2 85 +404.05 +/- 37.32
150207 ncm-et-15 2021-07-24 16:32 01:15:04 1956034 500 407 3 90 +389.56 +/- 36.25
150206 ncm-et-4 2021-07-24 15:25 01:16:36 1938686 500 431 0 69 +452.04 +/- 41.5
150205 ncm-et-10 2021-07-24 15:24 01:17:18 1934610 500 401 2 97 +379.78 +/- 34.83
150204 ncm-et-9 2021-07-24 15:22 01:13:59 1962463 500 423 3 74 +424.28 +/- 40.13
150203 ncm-et-13 2021-07-24 15:21 01:14:03 1962916 500 422 1 77 +426.65 +/- 39.25
150202 ncm-et-3 2021-07-24 15:21 01:13:15 1975767 500 423 1 76 +429.05 +/- 39.52
150201 ncm-et-15 2021-07-24 15:18 01:13:43 1961324 500 414 1 85 +408.38 +/- 37.27
150200 ncm-et-4 2021-07-24 14:09 01:15:01 1956645 500 414 1 85 +408.38 +/- 37.27
150199 ncm-et-10 2021-07-24 14:08 01:15:32 1945213 500 419 2 79 +417.32 +/- 38.77
150198 ncm-et-13 2021-07-24 14:07 01:13:39 1960467 500 406 0 94 +393.6 +/- 35.29
150197 ncm-et-9 2021-07-24 14:06 01:15:10 1970633 500 401 2 97 +379.78 +/- 34.83
150196 ncm-et-3 2021-07-24 14:04 01:15:44 1958021 500 410 1 89 +399.81 +/- 36.38
150195 ncm-et-15 2021-07-24 14:03 01:13:39 1965405 500 422 1 77 +426.65 +/- 39.25
150194 ncm-et-4 2021-07-24 12:52 01:16:42 1954674 500 418 2 80 +415.05 +/- 38.52
150193 ncm-et-9 2021-07-24 12:51 01:14:17 1967728 500 419 1 80 +419.61 +/- 38.47
150192 ncm-et-10 2021-07-24 12:51 01:15:35 1947369 500 421 0 79 +426.65 +/- 38.66
150191 ncm-et-13 2021-07-24 12:51 01:15:06 1955735 500 431 1 68 +449.35 +/- 41.89
150190 ncm-et-3 2021-07-24 12:49 01:14:05 1961267 500 415 2 83 +408.38 +/- 37.78
150189 ncm-et-15 2021-07-24 12:48 01:14:34 1964150 500 406 0 94 +393.6 +/- 35.29
150188 ncm-et-9 2021-07-24 11:36 01:14:52 1955262 500 405 0 95 +391.57 +/- 35.09
150187 ncm-et-4 2021-07-24 11:36 01:15:42 1956185 500 418 1 81 +417.32 +/- 38.22
150186 ncm-et-10 2021-07-24 11:35 01:15:19 1953597 500 434 0 66 +460.32 +/- 42.48
150185 ncm-et-13 2021-07-24 11:35 01:15:33 1966305 500 427 3 70 +433.94 +/- 41.3
150184 ncm-et-3 2021-07-24 11:34 01:14:20 1970190 500 428 0 72 +444.08 +/- 40.59
150183 ncm-et-15 2021-07-24 11:33 01:14:08 1967562 500 405 1 94 +389.56 +/- 35.35
150182 ncm-et-13 2021-07-24 10:20 01:14:12 1965238 500 425 0 75 +436.43 +/- 39.73
150181 ncm-et-4 2021-07-24 10:20 01:15:14 1961841 500 414 0 86 +410.58 +/- 36.97
150180 ncm-et-15 2021-07-24 10:20 01:13:20 1961549 500 412 1 87 +404.05 +/- 36.82
150179 ncm-et-3 2021-07-24 10:19 01:14:21 1961293 500 422 0 78 +429.05 +/- 38.92
150178 ncm-et-9 2021-07-24 10:19 01:15:51 1954354 500 409 3 88 +393.6 +/- 36.68
150177 ncm-et-10 2021-07-24 10:19 01:15:19 1958788 500 408 1 91 +395.65 +/- 35.96

Commit

Commit ID d957179df7285f8d032803661b378b7f1a80382e
Author Vizvezdenec
Date 2021-07-23 16:47:30 UTC
Prune illegal moves in qsearch earlier The main idea is that illegal moves influencing search or qsearch obviously can't be any sort of good. The only reason why initially legality checks for search and qsearch were done after they actually can influence some heuristics is because legality check is expensive computationally. Eventually in search it was moved to the place where it makes sure that illegal moves can't influence search. This patch shows that the same can be done for qsearch + it passed STC with elo-gaining bounds + it removes 3 lines of code because one no longer needs to increment/decrement movecount on illegal moves. passed STC with elo-gaining bounds https://tests.stockfishchess.org/tests/view/60f20aefd1189bed71812da0 LLR: 2.94 (-2.94,2.94) <-0.50,2.50> Total: 61512 W: 4688 L: 4492 D: 52332 Ptnml(0-2): 139, 3730, 22848, 3874, 165 The same version functionally but with moving condition ever earlier passed LTC with simplification bounds. https://tests.stockfishchess.org/tests/view/60f292cad1189bed71812de9 LLR: 2.98 (-2.94,2.94) <-2.50,0.50> Total: 60944 W: 1724 L: 1685 D: 57535 Ptnml(0-2): 11, 1556, 27298, 1597, 10 closes https://github.com/official-stockfish/Stockfish/pull/3618 bench 4709569
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