| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Taras Vuk
Date: Tue Oct 1 20:59:17 2024 +0200 Timestamp: 1727809157 Tweak ttCapture reduction More reduction at shallow depth for quiet moves when ttMove is a capture. Passed STC: LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 365728 W: 95896 L: 95090 D: 174742 Elo +0.77 Ptnml(0-2): 1283, 43133, 93262, 43867, 1319 https://tests.stockfishchess.org/tests/view/66edd35986d5ee47d953b0d5 Passed LTC: LLR: 2.96 (-2.94,2.94) <0.50,2.50> Total: 200526 W: 51197 L: 50540 D: 98789 Elo +1.14 Ptnml(0-2): 119, 21952, 55462, 22613, 117 https://tests.stockfishchess.org/tests/view/66f405dc86d5ee47d953b460 closes https://github.com/official-stockfish/Stockfish/pull/5610 bench: 1269487 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Shawn Xu
Date: Sat Sep 28 18:01:31 2024 +0200 Timestamp: 1727539291 Make Correction History Size Uniform Passed Non-regression STC: LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 207232 W: 53834 L: 53802 D: 99596 Elo +0.05 Ptnml(0-2): 695, 24486, 53200, 24562, 673 https://tests.stockfishchess.org/tests/view/66e9f5a886d5ee47d953ada1 Passed Non-regression LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 99120 W: 25264 L: 25123 D: 48733 Elo +0.49 Ptnml(0-2): 66, 10803, 27675, 10956, 60 https://tests.stockfishchess.org/tests/view/66ed7ebc86d5ee47d953b056 Passed Non-regression LTC vs #5606: LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 208950 W: 53049 L: 53019 D: 102882 Elo +0.05 Ptnml(0-2): 111, 23232, 57760, 23260, 112 https://tests.stockfishchess.org/tests/view/66f1843886d5ee47d953b2f2 closes https://github.com/official-stockfish/Stockfish/pull/5609 bench 1575189 see source |
| Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: peregrineshahin
Date: Sat Sep 28 18:01:31 2024 +0200 Timestamp: 1727539291 Push expected cutting late moves up in the move ordering. since the passing of the LMR verification is coming from a relatively late move this means we have wasted some time trying/picking other moves, and it would make sense to push it up in the move ordering for future positions not to be as late. Passed STC: https://tests.stockfishchess.org/tests/view/66f0f69186d5ee47d953b2aa LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 34144 W: 9024 L: 8709 D: 16411 Elo +3.21 Ptnml(0-2): 137, 3875, 8732, 4192, 136 Passed LTC: https://tests.stockfishchess.org/tests/view/66f1d84a86d5ee47d953b325 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 62808 W: 16054 L: 15684 D: 31070 Elo +2.05 Ptnml(0-2): 24, 6725, 17555, 7057, 43 closes https://github.com/official-stockfish/Stockfish/pull/5608 bench: 1452807 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Tomasz Sobczyk
Date: Sat Sep 28 18:01:26 2024 +0200 Timestamp: 1727539286 Add a standardized benchmark command `speedtest`. `speedtest [threads] [hash_MiB] [time_s]`. `threads` default to system concurrency. `hash_MiB` defaults to `threads*128`. `time_s` defaults to 150. Intended to be used with default parameters, as a stable hardware benchmark. Example: ``` C:\dev\stockfish-master\src>stockfish.exe speedtest Stockfish dev-20240928-nogit by the Stockfish developers (see AUTHORS file) info string Using 16 threads Warmup position 3/3 Position 258/258 =========================== Version : Stockfish dev-20240928-nogit Compiled by : g++ (GNUC) 13.2.0 on MinGW64 Compilation architecture : x86-64-vnni256 Compilation settings : 64bit VNNI BMI2 AVX2 SSE41 SSSE3 SSE2 POPCNT Compiler __VERSION__ macro : 13.2.0 Large pages : yes User invocation : speedtest Filled invocation : speedtest 16 2048 150 Available processors : 0-15 Thread count : 16 Thread binding : none TT size [MiB] : 2048 Hash max, avg [per mille] : single search : 40, 21 single game : 631, 428 Total nodes searched : 2099917842 Total search time [s] : 153.937 Nodes/second : 13641410 ``` ------------------------------- Small unrelated tweaks: - Network verification output is now handled as a callback. - TT hashfull queries allow specifying maximum entry age. closes https://github.com/official-stockfish/Stockfish/pull/5354 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Nonlinear2
Date: Sat Sep 28 17:22:33 2024 +0200 Timestamp: 1727536953 simplify see pruning in qsearch passed non-regression STC: LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 34880 W: 9193 L: 8968 D: 16719 Elo +2.24 Ptnml(0-2): 103, 4047, 8935, 4232, 123 https://tests.stockfishchess.org/tests/view/66ee83bd86d5ee47d953b15b passed non-regression LTC: LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 69126 W: 17529 L: 17357 D: 34240 Elo +0.86 Ptnml(0-2): 41, 7507, 19285, 7699, 31 https://tests.stockfishchess.org/tests/view/66ef3e0386d5ee47d953b1d3 closes https://github.com/official-stockfish/Stockfish/pull/5607 Bench: 1339840 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 + SSSE3 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Joost VandeVondele
Date: Sat Sep 28 17:17:44 2024 +0200 Timestamp: 1727536664 Tweak Correction histories tune parameters some more, adjust scores updated for each history passed STC: https://tests.stockfishchess.org/tests/view/66ea569186d5ee47d953ae48 LLR: 2.92 (-2.94,2.94) <0.00,2.00> Total: 36288 W: 9660 L: 9344 D: 17284 Elo +3.03 Ptnml(0-2): 110, 4207, 9220, 4471, 136 passed LTC: https://tests.stockfishchess.org/tests/view/66ea9b4e86d5ee47d953ae6f LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 241446 W: 61748 L: 61010 D: 118688 Elo +1.06 Ptnml(0-2): 173, 26211, 67202, 26979, 158 closes https://github.com/official-stockfish/Stockfish/pull/5606 Bench: 1677953 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: FauziAkram
Date: Sat Sep 28 17:17:14 2024 +0200 Timestamp: 1727536634 Removed ROOK threatenedByPawn Passed STC: LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 56608 W: 14788 L: 14588 D: 27232 Elo +1.23 Ptnml(0-2): 162, 6763, 14313, 6845, 221 https://tests.stockfishchess.org/tests/view/66e83f9c86d5ee47d953ab1d Passed LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 175758 W: 44501 L: 44438 D: 86819 Elo +0.12 Ptnml(0-2): 125, 19489, 48601, 19526, 138 https://tests.stockfishchess.org/tests/view/66e882d486d5ee47d953ab8a closes https://github.com/official-stockfish/Stockfish/pull/5601 bench: 1241271 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Wencey Wang
Date: Sat Sep 28 17:12:12 2024 +0200 Timestamp: 1727536332 Fix native arch builds on loongarch64 Adds support for LSX and LASX closes https://github.com/official-stockfish/Stockfish/pull/5600 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Shawn Xu
Date: Tue Sep 17 21:01:43 2024 +0200 Timestamp: 1726599703 Introduce Various Correction histories This patch introduces three additional correction histories, namely, Major Piece Correction History, Minor Piece Correction History, and Non-Pawn Correction History. Introduced by @mcthouacbb in Sirius (https://github.com/mcthouacbb/Sirius) chess engine. The Major Piece Correction History is indexed by side-to-move and the Zobrist key representing the position of the King, Rook, and Queen of both sides. Likewise, the Minor Piece Correction History is indexed by side-to-move and the Zobrist key representing the position of the King, Knight, and Bishop of both sides. Also See: https://github.com/mcthouacbb/Sirius/commit/97b85bbaac88ff5a0f63e28776027dd3de77164e https://github.com/mcthouacbb/Sirius/commit/3099cdef2f13e29805654b5f8153e6ecd5853195 Introduced by @zzzzz151 in Starzix (https://github.com/zzzzz151/Starzix) chess engine. Non-Pawn correction history consists of side-to-move, side of Zobrist key, and a Zobrist key representing of the position of all non-pawn pieces of **one side**. The non-pawn correction values for both key sides are then summed. Also See: https://github.com/zzzzz151/Starzix/commit/34911772f178c27b3a239dda0acb79c397c3a2f0 https://github.com/zzzzz151/Starzix/commit/33e0df8dd2db1d4775974ab12e3390154697f47a The weights on the final correction value of the above correction histories, as well as existing correction histories, are then tuned in two separate SPSA sessions, totaling 75k games. SPSA1: https://tests.stockfishchess.org/tests/view/66e5243886d5ee47d953a86b (Stopped early due to some weights reaching the maximum value) SPSA2: https://tests.stockfishchess.org/tests/view/66e6a26f86d5ee47d953a965 Also thanks to @martinnovaak, (Motor https://github.com/martinnovaak/motor author) for insights and suggestions. Passed STC: LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 23328 W: 6197 L: 5901 D: 11230 Elo +4.41 Ptnml(0-2): 82, 2582, 6041, 2876, 83 https://tests.stockfishchess.org/tests/view/66e8787b86d5ee47d953ab6f Passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 10626 W: 2826 L: 2560 D: 5240 Elo +8.70 Ptnml(0-2): 4, 1054, 2941, 1300, 14 https://tests.stockfishchess.org/tests/view/66e8ab2386d5ee47d953aba8 closes https://github.com/official-stockfish/Stockfish/pull/5598 Bench: 1011161 see source |
| Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Michael Chaly
Date: Tue Sep 17 20:54:02 2024 +0200 Timestamp: 1726599242 Introduce separate butterfly history table for sorting root moves Idea of this patch comes from the fact that current history heuristics are mostly populated by low depth entries since our stat bonus reaches maximum value at depth 5-6 and number of low depth nodes is much bigger than number of high depth nodes. But it doesn't make a whole lost of sense to use this low-depth centered histories to sort moves at root. Current patch introduces special history table that is used exclusively at root, it remembers which quiet moves were good and which quiet moves were not good there and uses this information for move ordering. Passed STC: https://tests.stockfishchess.org/tests/view/66dda74adc53972b68218cc9 LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 127680 W: 33579 L: 33126 D: 60975 Elo +1.23 Ptnml(0-2): 422, 15098, 32391, 15463, 466 Passed LTC: https://tests.stockfishchess.org/tests/view/66dead2adc53972b68218d34 LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 381978 W: 96958 L: 95923 D: 189097 Elo +0.94 Ptnml(0-2): 277, 42165, 105089, 43162, 296 closes https://github.com/official-stockfish/Stockfish/pull/5595 Bench: 1611283 see source |
| Windows x64 for modern computers + AVX2 Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Shawn Xu
Date: Tue Sep 17 20:50:30 2024 +0200 Timestamp: 1726599030 Simplify Fail Low Bonus Passed Non-regression STC: LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 302528 W: 78190 L: 78264 D: 146074 Elo -0.08 Ptnml(0-2): 1029, 35797, 77551, 35993, 894 https://tests.stockfishchess.org/tests/view/66dcebdedc53972b68218c7e Passed Non-regression LTC: LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 122754 W: 31025 L: 30907 D: 60822 Elo +0.33 Ptnml(0-2): 74, 13597, 33908, 13733, 65 https://tests.stockfishchess.org/tests/view/66e0c38686d5ee47d953a481 closes https://github.com/official-stockfish/Stockfish/pull/5594 Bench: 1646373 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Muzhen Gaming
Date: Tue Sep 17 20:47:24 2024 +0200 Timestamp: 1726598844 VVLTC Search Tune Tuned with 115k games at VVLTC: https://tests.stockfishchess.org/tests/view/66c80e09bf8c9d8780fda62a Passed VVLTC 1st sprt: https://tests.stockfishchess.org/tests/view/66d69ade9de3e7f9b33d14f9 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 54270 W: 13935 L: 13647 D: 26688 Elo +1.84 Ptnml(0-2): 2, 4907, 17032, 5189, 5 Passed VVLTC 2nd sprt: https://tests.stockfishchess.org/tests/view/66dcf9c1dc53972b68218c84 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 136696 W: 34941 L: 34462 D: 67293 Elo +1.22 Ptnml(0-2): 8, 12659, 42535, 13138, 8 closes https://github.com/official-stockfish/Stockfish/pull/5592 Bench: 1644273 see source |
| Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Disservin
Date: Tue Sep 17 20:24:17 2024 +0200 Timestamp: 1726597457 Port instrumented testing to python Since an unknown amount of time the instrumented CI has been a bit flawed, explained here https://github.com/official-stockfish/Stockfish/issues/5185. It also experiences random timeout issues where restarting the workflow fixes it or very long run times (more than other workflows) and is not very portable. The intention of this commit is to port the instrumented.sh to python which also works on other operating systems. It should also be relatively easy for beginners to add new tests to assert stockfish's output and to run it. From the source directory the following command can be run. `python3 ../tests/instrumented.py --none ./stockfish` A test runner will go over the test suites and run the test cases. All instrumented tests should have been ported over. The required python version for this is should be 3.7 (untested) + the requests package, testing.py includes some infrastructure code which setups the testing. fixes https://github.com/official-stockfish/Stockfish/issues/5185 closes https://github.com/official-stockfish/Stockfish/pull/5583 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: MinetaS
Date: Tue Sep 10 23:00:41 2024 +0200 Timestamp: 1726002041 Fix net downloading script The recent commit introduced a bug in the net downloading script that the file is not downloaded correctly and the content is redirected to stdout. closes https://github.com/official-stockfish/Stockfish/pull/5585 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Nonlinear2
Date: Tue Sep 10 22:59:27 2024 +0200 Timestamp: 1726001967 Remove the `moveCount` increase in the LMR condition. Passed non-regression STC: LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 87104 W: 22630 L: 22464 D: 42010 Elo +0.66 Ptnml(0-2): 316, 10295, 22132, 10525, 284 https://tests.stockfishchess.org/tests/view/66dccd00dc53972b68218c60 Passed non-regression LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 94050 W: 23869 L: 23722 D: 46459 Elo +0.54 Ptnml(0-2): 49, 10400, 25985, 10537, 54 https://tests.stockfishchess.org/tests/view/66dd69c7dc53972b68218ca5 closes https://github.com/official-stockfish/Stockfish/pull/5582 Bench: 1281840 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: MinetaS
Date: Tue Sep 10 22:58:47 2024 +0200 Timestamp: 1726001927 Remove statScore condition in NMP Eliminate the condition that is nearly 100% likelihood of being true. Passed non-regression STC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 208832 W: 54053 L: 54022 D: 100757 Elo +0.05 Ptnml(0-2): 753, 24987, 52901, 25026, 749 https://tests.stockfishchess.org/tests/view/66cddb50bf8c9d8780fdabaf Passed non-regression LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 154344 W: 39132 L: 39047 D: 76165 Elo +0.19 Ptnml(0-2): 115, 17231, 42403, 17300, 123 https://tests.stockfishchess.org/tests/view/66cfafe39de3e7f9b33d1050 closes https://github.com/official-stockfish/Stockfish/pull/5558 Bench: 1393697 see source |
| Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: MinetaS
Date: Mon Sep 9 18:02:32 2024 +0200 Timestamp: 1725897752 Small speedup in incremental accumulator updates Instead of updating at most two accumulators, update all accumluators during incremental updates. Tests have shown that this change yields a small speedup of at least 0.5%, and up to 1% with shorter TC. Passed STC: LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 54368 W: 14179 L: 13842 D: 26347 Elo +2.15 Ptnml(0-2): 173, 6122, 14262, 6449, 178 https://tests.stockfishchess.org/tests/view/66db038a9de3e7f9b33d1ad9 Passed 5+0.05: LLR: 2.98 (-2.94,2.94) <0.00,2.00> Total: 55040 W: 14682 L: 14322 D: 26036 Elo +2.27 Ptnml(0-2): 303, 6364, 13856, 6664, 333 https://tests.stockfishchess.org/tests/view/66dbc325dc53972b68218ba7 Passed non-regression LTC: LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 57390 W: 14555 L: 14376 D: 28459 Elo +1.08 Ptnml(0-2): 37, 5876, 16683, 6069, 30 https://tests.stockfishchess.org/tests/view/66dbc30adc53972b68218ba5 closes https://github.com/official-stockfish/Stockfish/pull/5576 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Disservin
Date: Mon Sep 9 18:02:32 2024 +0200 Timestamp: 1725897752 Use optional for the engine path - A small quality of file change is to change the type of engine path from a string to an optional string, skips the binary directory lookup, which is commonly disabled by people who create wasm builds or include stockfish as a library. closes https://github.com/official-stockfish/Stockfish/pull/5575 No functional change see source |
| Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Michael Chaly
Date: Mon Sep 9 18:02:32 2024 +0200 Timestamp: 1725897752 Simplify ttmove reduction Remove condition that clamps reductions for tt move. Passed STC: https://tests.stockfishchess.org/tests/view/66d5f1239de3e7f9b33d14b0 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 91136 W: 23805 L: 23646 D: 43685 Elo +0.61 Ptnml(0-2): 334, 10328, 24066, 10525, 315 Passed LTC: https://tests.stockfishchess.org/tests/view/66d7c5889de3e7f9b33d1721 LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 139242 W: 35130 L: 35030 D: 69082 Elo +0.25 Ptnml(0-2): 78, 15200, 38986, 15258, 99 closes https://github.com/official-stockfish/Stockfish/pull/5574 Bench: 1268715 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: xu-shawn
Date: Mon Sep 9 18:02:32 2024 +0200 Timestamp: 1725897752 Remove ARCH=... from README.md closes https://github.com/official-stockfish/Stockfish/pull/5570 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: MinetaS
Date: Mon Sep 9 18:02:27 2024 +0200 Timestamp: 1725897747 Export and clean up net downloading script Fixes https://github.com/official-stockfish/Stockfish/issues/5564 This patch extracts the net downloading script in Makefile into an external script file. Also the script is moderately rewritten for improved readability and speed. * Use wget preferentially over curl, as curl is known to have slight overhead. * Use command instead of hash to check if command exists. Reportedly, hash always returns zero in some POSIX shells even when the command fails. * Command existence checks (wget/curl, sha256sum) are performed only once at the beginning. * Each of common patterns is encapsulated in a function (get_nnue_filename, validate_network). * Print out error/warning messages to stderr. closes https://github.com/official-stockfish/Stockfish/pull/5563 No functional change Co-authored-by: Disservin <> see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: xu-shawn
Date: Mon Sep 9 17:54:27 2024 +0200 Timestamp: 1725897267 Copy scripts directory in distributed packages closes https://github.com/official-stockfish/Stockfish/pull/5571 No functional change see source |
| Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Daniel Monroe
Date: Mon Sep 9 17:48:26 2024 +0200 Timestamp: 1725896906 Reduce on ttcaptures if not capture Tweak ttcapture reduction. Reduce on ttcaptures only if the current move is a capture Passed STC: LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 94912 W: 24896 L: 24492 D: 45524 Elo +1.48 Ptnml(0-2): 301, 11197, 24087, 11539, 332 https://tests.stockfishchess.org/tests/view/66cd2264bf8c9d8780fdab34 Passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 60738 W: 15465 L: 15096 D: 30177 Elo +2.11 Ptnml(0-2): 42, 6573, 16775, 6932, 47 https://tests.stockfishchess.org/tests/view/66cf356d9de3e7f9b33d0fde closes https://github.com/official-stockfish/Stockfish/pull/5562 Bench: 1268700 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Shawn Xu
Date: Mon Sep 9 17:43:05 2024 +0200 Timestamp: 1725896585 Introduce Material Correction History Idea from Caissa (https://github.com/Witek902/Caissa) chess engine. Add a secondary correction history indexed by the material key of a position. The material key is the zobrist hash representing the number of pieces left in a position. Passed STC: LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 189472 W: 49360 L: 48813 D: 91299 Elo +1.00 Ptnml(0-2): 666, 22453, 47953, 22996, 668 https://tests.stockfishchess.org/tests/view/66cbddafbf8c9d8780fda9f1 Passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 224190 W: 57022 L: 56312 D: 110856 Elo +1.10 Ptnml(0-2): 197, 24723, 61540, 25443, 192 https://tests.stockfishchess.org/tests/view/66cd529bbf8c9d8780fdab4c closes https://github.com/official-stockfish/Stockfish/pull/5556 Bench: 1462697 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: FauziAkram
Date: Mon Sep 9 17:34:31 2024 +0200 Timestamp: 1725896071 Simplify history bonus After we recently added the disallowance for negative bonuses, it is no longer necessary to keep the max comparison in the previous step. Passed STC: LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 72000 W: 18820 L: 18637 D: 34543 Elo +0.88 Ptnml(0-2): 267, 8489, 18276, 8730, 238 https://tests.stockfishchess.org/tests/view/66ce132cbf8c9d8780fdabe7 Passed LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 67452 W: 17136 L: 16961 D: 33355 Elo +0.90 Ptnml(0-2): 35, 7489, 18519, 7632, 51 https://tests.stockfishchess.org/tests/view/66cf6ad49de3e7f9b33d1010 closes https://github.com/official-stockfish/Stockfish/pull/5554 Bench: 1147012 see source |