Dev Builds » 20200407-1547

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 08:28:04 1961954 3364 2047 61 1256 +235.64 +/- 9.51
ncm-et-4 08:22:15 1969194 3349 2080 54 1215 +243.53 +/- 9.67
ncm-et-9 08:24:12 1970045 3337 2091 51 1195 +247.04 +/- 9.75
ncm-et-10 08:18:32 1962481 3293 2052 43 1198 +246.35 +/- 9.72
ncm-et-13 08:25:10 1961102 3316 2038 54 1224 +239.91 +/- 9.63
ncm-et-15 08:18:33 1966799 3341 2072 55 1214 +242.85 +/- 9.68
20000 12380 318 7302 +242.51 +/- 3.94

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
128578 ncm-et-10 2020-04-08 00:57 00:44:52 1957259 293 181 5 107 +241.19 +/- 32.78
128577 ncm-et-13 2020-04-08 00:53 00:48:48 1960461 316 202 5 109 +253.83 +/- 32.55
128576 ncm-et-15 2020-04-08 00:51 00:50:48 1964456 341 203 6 132 +228.97 +/- 29.38
128575 ncm-et-9 2020-04-08 00:51 00:50:49 1973270 337 214 4 119 +253.67 +/- 31.01
128574 ncm-et-4 2020-04-08 00:49 00:52:25 1972352 349 211 7 131 +232.54 +/- 29.6
128573 ncm-et-3 2020-04-08 00:47 00:54:11 1960157 364 231 10 123 +244.73 +/- 30.79
128572 ncm-et-10 2020-04-07 23:41 01:14:58 1966617 500 322 6 172 +258.75 +/- 25.79
128571 ncm-et-15 2020-04-07 23:35 01:15:07 1966769 500 307 6 187 +241.91 +/- 24.61
128570 ncm-et-13 2020-04-07 23:35 01:17:16 1962763 500 289 7 204 +221.9 +/- 23.44
128569 ncm-et-9 2020-04-07 23:34 01:15:32 1966172 500 311 5 184 +247.41 +/- 24.79
128568 ncm-et-4 2020-04-07 23:33 01:14:52 1969398 500 308 7 185 +241.91 +/- 24.8
128567 ncm-et-3 2020-04-07 23:31 01:14:56 1961841 500 298 10 192 +228.08 +/- 24.38
128566 ncm-et-10 2020-04-07 22:24 01:15:29 1965697 500 317 9 174 +249.64 +/- 25.72
128565 ncm-et-15 2020-04-07 22:19 01:14:11 1968018 500 319 10 171 +250.77 +/- 25.99
128564 ncm-et-9 2020-04-07 22:18 01:15:37 1969396 500 317 9 174 +249.64 +/- 25.72
128563 ncm-et-13 2020-04-07 22:17 01:16:03 1961384 500 302 11 187 +231.21 +/- 24.77
128562 ncm-et-4 2020-04-07 22:17 01:14:58 1959698 500 314 8 178 +247.41 +/- 25.37
128561 ncm-et-3 2020-04-07 22:15 01:15:03 1963685 500 291 6 203 +224.97 +/- 23.47
128560 ncm-et-10 2020-04-07 21:06 01:17:16 1948075 500 302 5 193 +237.58 +/- 24.13
128559 ncm-et-15 2020-04-07 21:02 01:16:14 1963383 500 306 7 187 +239.74 +/- 24.65
128558 ncm-et-9 2020-04-07 21:01 01:15:19 1970643 500 324 3 173 +264.6 +/- 25.58
128557 ncm-et-4 2020-04-07 21:01 01:15:32 1968791 500 311 7 182 +245.2 +/- 25.02
128556 ncm-et-13 2020-04-07 21:00 01:16:28 1958474 500 300 5 195 +235.45 +/- 23.98
128555 ncm-et-3 2020-04-07 20:58 01:16:16 1961542 500 269 8 223 +201.19 +/- 22.27
128554 ncm-et-10 2020-04-07 19:50 01:14:46 1964171 500 305 5 190 +240.82 +/- 24.35
128553 ncm-et-15 2020-04-07 19:47 01:13:40 1966794 500 327 8 165 +262.24 +/- 26.45
128552 ncm-et-4 2020-04-07 19:46 01:13:45 1971283 500 309 7 184 +243.0 +/- 24.87
128551 ncm-et-13 2020-04-07 19:44 01:14:53 1966305 500 306 8 186 +238.66 +/- 24.75
128550 ncm-et-9 2020-04-07 19:44 01:16:08 1972188 500 310 9 181 +241.91 +/- 25.17
128549 ncm-et-3 2020-04-07 19:40 01:16:27 1963532 500 326 11 163 +257.59 +/- 26.7
128548 ncm-et-10 2020-04-07 18:34 01:15:17 1968157 500 318 3 179 +257.59 +/- 25.09
128547 ncm-et-15 2020-04-07 18:32 01:14:22 1968934 500 314 9 177 +246.3 +/- 25.48
128546 ncm-et-4 2020-04-07 18:30 01:15:03 1974670 500 310 9 181 +241.91 +/- 25.17
128545 ncm-et-9 2020-04-07 18:28 01:14:35 1966773 500 314 10 176 +245.2 +/- 25.59
128544 ncm-et-13 2020-04-07 18:27 01:16:10 1957252 500 317 9 174 +249.64 +/- 25.72
128543 ncm-et-3 2020-04-07 18:24 01:15:30 1963228 500 315 8 177 +248.53 +/- 25.45
128542 ncm-et-10 2020-04-07 17:17 01:15:54 1967392 500 307 10 183 +237.58 +/- 25.04
128541 ncm-et-15 2020-04-07 17:17 01:14:11 1969241 500 296 9 195 +227.04 +/- 24.13
128540 ncm-et-4 2020-04-07 17:13 01:15:40 1968166 500 317 9 174 +249.64 +/- 25.72
128539 ncm-et-9 2020-04-07 17:11 01:16:12 1971875 500 301 11 188 +230.16 +/- 24.69
128538 ncm-et-13 2020-04-07 17:10 01:15:32 1961075 500 322 9 169 +255.3 +/- 26.13
128537 ncm-et-3 2020-04-07 17:07 01:15:41 1959694 500 317 8 175 +250.77 +/- 25.61

Commit

Commit ID 195a4fec6d6bd1f9e43f5b3e83a3dcf57dc73744
Author Vizvezdenec
Date 2020-04-07 15:47:01 UTC
Introduce capture history pruning This patch introduces a heuristic that is similar to countermove based pruning but for captures - capture history pruning. The idea is that we can (almost) safely prune really late captures with negative history if they don't give check so will most likely not produce some king-attacking tactic. passed STC https://tests.stockfishchess.org/tests/view/5e8c60d40ffd2be7f15e5470 LLR: 2.94 (-2.94,2.94) {-0.50,1.50} Total: 23748 W: 4758 L: 4529 D: 14461 Ptnml(0-2): 421, 2712, 5400, 2899, 442 passed LTC https://tests.stockfishchess.org/tests/view/5e8c72bf0ffd2be7f15e547f LLR: 2.96 (-2.94,2.94) {0.25,1.75} Total: 17330 W: 2415 L: 2190 D: 12725 Ptnml(0-2): 126, 1561, 5107, 1704, 167 closes https://github.com/official-stockfish/Stockfish/pull/2618 bench 4417023
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