| 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: Fri Oct 27 17:32:19 2023 +0200 Timestamp: 1698420739 Rewarding Quiet Moves that Enable Razoring The main idea of the patch comes from @peregrineshahin : https://tests.stockfishchess.org/tests/view/65205363ac57711436728781 Another small idea (tuning) comes from @Vizvezdenec https://tests.stockfishchess.org/tests/view/652e071ade6d262d08d318f4 And a long phases of tuning and tests was done by me in order to make the patch be able to pass both tests. The idea, as mentioned by Peregrine is that in our standard code, if no best move found after searching all moves, we give a bonus to the previous move that caused the fail high. So in razoring we assume no bestmove will be found so we might as well do the same. Passed STC: LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 82336 W: 20997 L: 20610 D: 40729 Elo +1.63 Ptnml(0-2): 288, 9710, 20753, 10161, 256 https://tests.stockfishchess.org/tests/view/6538fafbcc309ae83955d8f0 Passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 46584 W: 11753 L: 11411 D: 23420 Elo +2.55 Ptnml(0-2): 21, 5133, 12642, 5475, 21 https://tests.stockfishchess.org/tests/view/653a3f2ccc309ae83955f223 closes https://github.com/official-stockfish/Stockfish/pull/4850 Bench: 1258079 Co-Authored-By: Shahin M. Shahin <41402573+> 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: Michael Chaly
Date: Fri Oct 27 17:24:25 2023 +0200 Timestamp: 1698420265 Introduce pawn structure based history Original idea by Seer chess engine https://github.com/connormcmonigle/seer-nnue, coding done by @Disservin, code refactoring done by @locutus2 to match the style of other histories. This patch introduces pawn structure based history, which assings moves values based on last digits of pawn structure hash and piece type of moved piece and landing square of the move. Idea is that good places for pieces are quite often determined by pawn structure of position. Used in 3 different places - sorting of quiet moves, sorting of quiet check evasions and in history based pruning in search. Passed STC: https://tests.stockfishchess.org/tests/view/65391d08cc309ae83955dbaf LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 155488 W: 39408 L: 38913 D: 77167 Elo +1.11 Ptnml(0-2): 500, 18427, 39408, 18896, 513 Passed LTC: https://tests.stockfishchess.org/tests/view/653a36a2cc309ae83955f181 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 70110 W: 17548 L: 17155 D: 35407 Elo +1.95 Ptnml(0-2): 33, 7859, 18889, 8230, 44 closes https://github.com/official-stockfish/Stockfish/pull/4849 Bench: 1257882 Co-Authored-By: Disservin <> Co-Authored-By: Stefan Geschwentner <> 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: Taras Vuk
Date: Fri Oct 27 17:16:28 2023 +0200 Timestamp: 1698419788 Simplify futility pruning formula closes https://github.com/official-stockfish/Stockfish/pull/4848 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: Linmiao Xu
Date: Tue Oct 24 17:46:18 2023 +0200 Timestamp: 1698162378 Update 5 search params for pruning at shallow depth Found by spsa tuning at 45+0.45 with: ``` int fpcEvalOffset = 188; int fpcLmrDepthMult = 206; int histDepthMult = -3232; int histDenom = 5793; int fpEvalOffset = 115; int negSeeDepthMultSq = -27; TUNE(SetRange(0, 394), fpcEvalOffset); TUNE(SetRange(0, 412), fpcLmrDepthMult); TUNE(SetRange(-6464, -1616), histDepthMult); TUNE(SetRange(2896, 11586), histDenom); TUNE(SetRange(0, 230), fpEvalOffset); TUNE(SetRange(-54, 0), negSeeDepthMultSq); ``` Passed STC: https://tests.stockfishchess.org/tests/view/6535551de746e058e6c0165d LLR: 2.98 (-2.94,2.94) <0.00,2.00> Total: 109056 W: 28025 L: 27599 D: 53432 Elo +1.36 Ptnml(0-2): 357, 12669, 28038, 13119, 345 Passed LTC: https://tests.stockfishchess.org/tests/view/65364c6ff127f3553505175d LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 61290 W: 15316 L: 14941 D: 31033 Elo +2.13 Ptnml(0-2): 34, 6849, 16498, 7236, 28 closes https://github.com/official-stockfish/Stockfish/pull/4847 bench 1167412 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: Joost VandeVondele
Date: Tue Oct 24 17:43:05 2023 +0200 Timestamp: 1698162185 Cleanup comments and some code reorg. passed STC: https://tests.stockfishchess.org/tests/view/6536dc7dcc309ae83955b04d LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 58048 W: 14693 L: 14501 D: 28854 Elo +1.15 Ptnml(0-2): 200, 6399, 15595, 6669, 161 closes https://github.com/official-stockfish/Stockfish/pull/4846 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: cj5716
Date: Tue Oct 24 17:42:13 2023 +0200 Timestamp: 1698162133 Small formatting improvements Changes some C style casts to C++ style, and fixes some incorrect comments and variable names. closes #4845 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: Joost VandeVondele
Date: Mon Oct 23 20:39:48 2023 +0200 Timestamp: 1698086388 Follow up Makefile changes for clang-format as reported on various OS, these changes help portability closes https://github.com/official-stockfish/Stockfish/pull/4844 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: Muzhen Gaming
Date: Mon Oct 23 20:39:48 2023 +0200 Timestamp: 1698086388 Time management improvements 1. Tune time management parameters. 2. Scale the optimum time and maximum time parameters based on the amount of time left, using a logarithmic scale. Many acknowledgements to @FauziAkram for tuning the parameters and for the original idea (see https://tests.stockfishchess.org/tests/view/652f0356de6d262d08d333c5). STC: https://tests.stockfishchess.org/tests/view/6533938fde6d262d08d39e4d LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 44320 W: 11301 L: 10982 D: 22037 Elo +2.50 Ptnml(0-2): 146, 4810, 11920, 5147, 137 LTC: https://tests.stockfishchess.org/tests/view/653477e4de6d262d08d3ae06 LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 146442 W: 37338 L: 36811 D: 72293 Elo +1.25 Ptnml(0-2): 60, 14975, 42645, 15460, 81 Verification runs: 3+0.03: https://tests.stockfishchess.org/tests/view/65364e7ef127f3553505178a 10+0: https://tests.stockfishchess.org/tests/view/65364e9ff127f3553505178f 180+1.8: https://tests.stockfishchess.org/tests/view/65364ec3f127f35535051794 closes https://github.com/official-stockfish/Stockfish/pull/4843 No functional change. Co-Authored-By: FauziAkram <11150271+> 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: Disservin
Date: Mon Oct 23 20:39:48 2023 +0200 Timestamp: 1698086388 remove blank line between function and it's description - remove the blank line between the declaration of the function and it's comment, leads to better IDE support when hovering over a function to see it's description - remove the unnecessary duplication of the function name in the functions description - slightly refactored code for lsb, msb in bitboard.h There are still a few things we can be improved later on, move the description of a function where it was declared (instead of implemented) and add descriptions to functions which are behind macros ifdefs closes https://github.com/official-stockfish/Stockfish/pull/4840 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: Disservin
Date: Mon Oct 23 20:39:48 2023 +0200 Timestamp: 1698086388 use expanded variables for shell commands Performance improvement for the shell commands in the Makefile. By using expanded variables, the shell commands are only evaluated once, instead of every time they are used. closes https://github.com/official-stockfish/Stockfish/pull/4838 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: Mon Oct 23 20:39:48 2023 +0200 Timestamp: 1698086388 Fix a compiler bug on Clang 15+ with AVX-512 fixes https://github.com/official-stockfish/Stockfish/issues/4450 closes https://github.com/official-stockfish/Stockfish/pull/4830 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: Taras Vuk
Date: Sun Oct 22 16:16:02 2023 +0200 Timestamp: 1697984162 Simplify futilityBase formula This patch replaces std::min(ss->staticEval, bestValue) with ss->staticEval in the futilityBase formula. Original idea by Vizvezdenec: https://tests.stockfishchess.org/tests/view/64ce66795b17f7c21c0d85f3 Passed STC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 116928 W: 29925 L: 29793 D: 57210 Elo +0.39 Ptnml(0-2): 399, 13558, 30446, 13634, 427 https://tests.stockfishchess.org/tests/view/653285aade6d262d08d385dd Passed LTC: LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 50868 W: 12947 L: 12757 D: 25164 Elo +1.30 Ptnml(0-2): 30, 5414, 14355, 5606, 29 https://tests.stockfishchess.org/tests/view/65336ffbde6d262d08d39ba0 closes https://github.com/official-stockfish/Stockfish/pull/4837 bench: 1241996 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: Disservin
Date: Sun Oct 22 16:06:27 2023 +0200 Timestamp: 1697983587 add clang-format This introduces clang-format to enforce a consistent code style for Stockfish. Having a documented and consistent style across the code will make contributing easier for new developers, and will make larger changes to the codebase easier to make. To facilitate formatting, this PR includes a Makefile target (`make format`) to format the code, this requires clang-format (version 17 currently) to be installed locally. Installing clang-format is straightforward on most OS and distros (e.g. with https://apt.llvm.org/, brew install clang-format, etc), as this is part of quite commonly used suite of tools and compilers (llvm / clang). Additionally, a CI action is present that will verify if the code requires formatting, and comment on the PR as needed. Initially, correct formatting is not required, it will be done by maintainers as part of the merge or in later commits, but obviously this is encouraged. fixes https://github.com/official-stockfish/Stockfish/issues/3608 closes https://github.com/official-stockfish/Stockfish/pull/4790 Co-Authored-By: Joost VandeVondele <> 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: mstembera
Date: Sat Oct 21 10:37:27 2023 +0200 Timestamp: 1697877447 Scale down stat bonus STC https://tests.stockfishchess.org/tests/view/652eff58de6d262d08d33353 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 88224 W: 22618 L: 22228 D: 43378 Elo +1.54 Ptnml(0-2): 282, 10177, 22783, 10609, 261 LTC https://tests.stockfishchess.org/tests/view/652fd13bde6d262d08d3481a LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 143508 W: 36674 L: 36142 D: 70692 Elo +1.29 Ptnml(0-2): 92, 15240, 40534, 15820, 68 Reduces the stat bonus by 20%. Maybe future patches can tune the actual bonus calculations for different histories. closes https://github.com/official-stockfish/Stockfish/pull/4836 bench: 1185932 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: Taras Vuk
Date: Sat Oct 21 10:34:12 2023 +0200 Timestamp: 1697877252 Subtract the margin from the value returned by ProbCut This patch subtracts the margin from the value returned by ProbCut. Passed STC: LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 46112 W: 11940 L: 11610 D: 22562 Elo +2.49 Ptnml(0-2): 131, 5318, 11842, 5620, 145 https://tests.stockfishchess.org/tests/view/652ea42ade6d262d08d329dd Passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 86880 W: 22192 L: 21776 D: 42912 Elo +1.66 Ptnml(0-2): 43, 9213, 24510, 9633, 41 https://tests.stockfishchess.org/tests/view/652f70ffde6d262d08d33e8d closes https://github.com/official-stockfish/Stockfish/pull/4835 bench: 1135313 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 Oct 21 10:31:51 2023 +0200 Timestamp: 1697877111 Removing history condition Removing the bad history condition from the skip futility pruning formula. Passed STC: LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 142688 W: 36420 L: 36317 D: 69951 Elo +0.25 Ptnml(0-2): 481, 16653, 36970, 16762, 478 https://tests.stockfishchess.org/tests/view/65270a663125598fc7eb8c67 Passed LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 435378 W: 110723 L: 110925 D: 213730 Elo -0.16 Ptnml(0-2): 278, 47251, 122788, 47139, 233 https://tests.stockfishchess.org/tests/view/6528595f3125598fc7eba8f5 closes https://github.com/official-stockfish/Stockfish/pull/4834 Bench: 1110579 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: mstembera
Date: Sat Oct 21 10:28:55 2023 +0200 Timestamp: 1697876935 Remove outdated Tile naming. cleanup variable naming after #4816 closes #4833 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: Shahin M. Shahin
Date: Sat Oct 21 10:26:09 2023 +0200 Timestamp: 1697876769 Cleanup qsearch continuation histories Only (ss-1) and (ss-2) are used in qsearch. closes https://github.com/official-stockfish/Stockfish/pull/4828 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: FauziAkram
Date: Sat Oct 21 10:25:03 2023 +0200 Timestamp: 1697876703 Standardize Comments use double slashes (//) only for comments. closes #4820 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: Stéphane Nicolet
Date: Sat Oct 21 10:15:48 2023 +0200 Timestamp: 1697876148 Reformat some comments and conditions closes https://github.com/official-stockfish/Stockfish/pull/4814 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: Shahin M. Shahin
Date: Sat Oct 21 10:01:26 2023 +0200 Timestamp: 1697875286 Fix greater than TB scores in null move pruning. This patch is a simplification and a fix to dealing with null moves scores that returns proven mates or TB scores by preventing 'null move pruning' if the nullvalue is in that range. Current solution downgrades nullValues on the non-PV node but the value can be used in a transposed PV-node to the same position afterwards (Triangulation), the later is prone to propagate a wrong score (96.05) to root that will not be refuted unless we search further. Score of (96.05) can be obtained be two methods, maxim static-eval returned on Pv update (mostly qSearch) this downgrade (clamp) in NMP and theoretically can happen with or without TBs but the second scenario is more dangerous than the first. This fixes the reproducible case in very common scenarios with TBs as shown in the debugging at discord. Fixes: #4699 Passed STC: https://tests.stockfishchess.org/tests/view/64c1eca8dc56e1650abba6f9 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 670048 W: 171132 L: 171600 D: 327316 Elo -0.24 Ptnml(0-2): 2134, 75687, 179820, 75279, 2104 Passed LTC: https://tests.stockfishchess.org/tests/view/64c5e130dc56e1650abc0438 LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 92868 W: 23642 L: 23499 D: 45727 Elo +0.53 Ptnml(0-2): 52, 9509, 27171, 9648, 54 closes https://github.com/official-stockfish/Stockfish/pull/4715 Bench: 1327410 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: Michael Chaly
Date: Sat Oct 14 16:52:35 2023 +0200 Timestamp: 1697295155 Use more continuation histories. This patch allows stats updates and movepicker bonuses for continuation history 3 plies deep - so counter counter move. Updates and movepicker usage are done with 1/4 multiplier compared to other histories. Passed STC: https://tests.stockfishchess.org/tests/view/6528f28d3125598fc7ebb5a3 LLR: 2.96 (-2.94,2.94) <0.00,2.00> Total: 161344 W: 41369 L: 40868 D: 79107 Elo +1.08 Ptnml(0-2): 535, 18720, 41679, 19185, 553 Passed LTC: https://tests.stockfishchess.org/tests/view/652a397a3125598fc7ebd1d6 LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 48564 W: 12556 L: 12215 D: 23793 Elo +2.44 Ptnml(0-2): 25, 5149, 13595, 5486, 27 closes https://github.com/official-stockfish/Stockfish/pull/4827 bench 1327410 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: Muzhen Gaming
Date: Tue Oct 10 17:45:32 2023 +0200 Timestamp: 1696952732 Search parameters tune at 180+1.8 Passed VLTC: https://tests.stockfishchess.org/tests/view/65200c58ac577114367280bc LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 146180 W: 37407 L: 36988 D: 71785 Elo +1.00 Ptnml(0-2): 21, 14474, 43675, 14905, 15 Passed VLTC SMP: https://tests.stockfishchess.org/tests/view/652403da3125598fc7eb4b6d LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 57580 W: 15061 L: 14739 D: 27780 Elo +1.94 Ptnml(0-2): 2, 5001, 18460, 5327, 0 closes https://github.com/official-stockfish/Stockfish/pull/4826 Bench: 1099336 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: Taras Vuk
Date: Sun Oct 8 07:56:07 2023 +0200 Timestamp: 1696744567 Skip futility pruning if ttMove has bad history Passed STC: LLR: 2.96 (-2.94,2.94) <0.00,2.00> Total: 52416 W: 13465 L: 13128 D: 25823 Elo +2.23 Ptnml(0-2): 128, 6024, 13604, 6287, 165 https://tests.stockfishchess.org/tests/view/651fadd4ac577114367277bf Passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 87348 W: 22234 L: 21818 D: 43296 Elo +1.65 Ptnml(0-2): 38, 9240, 24698, 9664, 34 https://tests.stockfishchess.org/tests/view/65201932ac57711436728218 closes https://github.com/official-stockfish/Stockfish/pull/4825 bench: 1246560 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: gabe
Date: Sun Oct 8 07:52:16 2023 +0200 Timestamp: 1696744336 Avoid recomputing moveCountPruning In search, when moveCountPruning becomes true, it can never turn false again. Passed STC https://tests.stockfishchess.org/tests/view/652075ceac57711436728aac LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 136448 W: 34923 L: 34472 D: 67053 Elo +1.15 Ptnml(0-2): 420, 15094, 36767, 15501, 442 closes https://github.com/official-stockfish/Stockfish/pull/4823 Non functional change see source |