| 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: Sun Nov 5 19:53:15 2023 +0100 Timestamp: 1699210395 Set reduction to 0 if the move is a TT move The reduction formula currently decreases by 1 if the move is a TT move. This changes this by just setting the reduction to 0 instead. Passed STC: LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 83136 W: 21145 L: 20758 D: 41233 Elo +1.62 Ptnml(0-2): 279, 9772, 21090, 10137, 290 https://tests.stockfishchess.org/tests/view/653c0fbacc309ae839561584 Passed LTC: LLR: 2.96 (-2.94,2.94) <0.50,2.50> Total: 273150 W: 67987 L: 67171 D: 137992 Elo +1.04 Ptnml(0-2): 155, 30730, 73966, 31592, 132 https://tests.stockfishchess.org/tests/view/653d9d02cc309ae839562fdf closes https://github.com/official-stockfish/Stockfish/pull/4863 bench: 1110556 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: Sun Nov 5 19:51:02 2023 +0100 Timestamp: 1699210262 Enhance some comments This documents some code and makes some hard code easier to understand for new developers. closes https://github.com/official-stockfish/Stockfish/pull/4862 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 Nov 4 17:34:35 2023 +0100 Timestamp: 1699115675 Tweaking the futility pruning formula Huge credit goes also to candirufish, as the idea was first tried by him, and then tuned by me at multiple phases. Tweaking the futility pruning formula to be a bit more selective about when pruning is applied. Adjust the value added to the static eval based on the bestValue relative to ss->staticEval. If bestValue is significantly lower, we add a larger value. Passed STC: LLR: 2.98 (-2.94,2.94) <0.00,2.00> Total: 37120 W: 9590 L: 9266 D: 18264 Elo +3.03 Ptnml(0-2): 130, 4301, 9385, 4603, 141 https://tests.stockfishchess.org/tests/view/6544cf90136acbc573523247 Passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 49632 W: 12381 L: 12033 D: 25218 Elo +2.44 Ptnml(0-2): 30, 5429, 13549, 5779, 29 https://tests.stockfishchess.org/tests/view/65453bc1136acbc573523a3c closes https://github.com/official-stockfish/Stockfish/pull/4861 bench: 1107118 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 Nov 3 22:50:05 2023 +0100 Timestamp: 1699048205 Update pawn history based on static eval difference Use the same logic as in main history but with 1/4 multiplier. Passed STC: https://tests.stockfishchess.org/tests/view/653c1282cc309ae8395615bf LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 306624 W: 77811 L: 77094 D: 151719 Elo +0.81 Ptnml(0-2): 975, 36411, 77830, 37114, 982 Passed LTC: https://tests.stockfishchess.org/tests/view/654258e2cc309ae83956818d LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 99150 W: 24681 L: 24228 D: 50241 Elo +1.59 Ptnml(0-2): 56, 11107, 26792, 11568, 52 closes https://github.com/official-stockfish/Stockfish/pull/4859 bench 1330590 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: Stefan Geschwentner
Date: Fri Nov 3 22:47:31 2023 +0100 Timestamp: 1699048051 Remove razoring history update. The recently commit 'Rewarding Quiet Moves that Enable Razoring' add a history update if razoring. But its contains also many tuned values all over the search. Following tests shows that the tuned values and not the added history update is responsible for the elo gain. So remove later. Passed STC: LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 29376 W: 7641 L: 7410 D: 14325 Elo +2.73 Ptnml(0-2): 100, 3411, 7451, 3610, 116 https://tests.stockfishchess.org/tests/view/653c9fe1cc309ae839562070 Passed LTC: LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 242922 W: 59879 L: 59885 D: 123158 Elo -0.01 Ptnml(0-2): 129, 27764, 65688, 27744, 136 https://tests.stockfishchess.org/tests/view/653d06cbcc309ae839562735 closes https://github.com/official-stockfish/Stockfish/pull/4858 Bench: 1286104 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: Fri Nov 3 22:40:43 2023 +0100 Timestamp: 1699047643 Simplifying two formulas by eliminating two multiplication operations. Passed STC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 60000 W: 15193 L: 14996 D: 29811 Elo +1.14 Ptnml(0-2): 199, 7100, 15215, 7277, 209 https://tests.stockfishchess.org/tests/view/653beb69cc309ae83956129d Passed LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 122910 W: 30471 L: 30353 D: 62086 Elo +0.33 Ptnml(0-2): 68, 13961, 33271, 14095, 60 https://tests.stockfishchess.org/tests/view/653c5848cc309ae839561ae7 closes https://github.com/official-stockfish/Stockfish/pull/4857 bench: 1216779 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: Fri Nov 3 22:39:04 2023 +0100 Timestamp: 1699047544 Prefetch TT entries in probcut Passed STC: LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 101344 W: 25893 L: 25491 D: 49960 Elo +1.38 Ptnml(0-2): 303, 11350, 26991, 11698, 330 https://tests.stockfishchess.org/tests/view/6540daa6cc309ae83956669b slight speedup: ``` Result of 100 runs ================== base (./stockfish.master ) = 1170705 +/- 3133 test (./stockfish.patch ) = 1174545 +/- 2895 diff = +3841 +/- 3196 speedup = +0.0033 P(speedup > 0) = 0.9907 ``` closes https://github.com/official-stockfish/Stockfish/pull/4856 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 30 07:51:27 2023 +0100 Timestamp: 1698648687 Introduce asymmetric optimism Introduce asymmetric optimism for both side to move and opponent. Parameter tuning was done with 200k LTC games. STC: https://tests.stockfishchess.org/tests/view/653cc08fcc309ae8395622b3 LLR: 2.96 (-2.94,2.94) <0.00,2.00> Total: 98336 W: 25074 L: 24661 D: 48601 Elo +1.46 Ptnml(0-2): 339, 11612, 24890, 11951, 376 LTC: https://tests.stockfishchess.org/tests/view/653db595cc309ae839563140 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 83244 W: 20760 L: 20339 D: 42145 Elo +1.76 Ptnml(0-2): 51, 9306, 22498, 9705, 62 closes https://github.com/official-stockfish/Stockfish/pull/4853 Bench: 1371690 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: Mon Oct 30 07:49:15 2023 +0100 Timestamp: 1698648555 Small cleanups Corrects some incorrect or outdated comments. Credit is shared with yaneurao (see 38e830a#commitcomment-131131500) and locutus2 closes #4852 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: Fri Oct 27 18:35:52 2023 +0200 Timestamp: 1698424552 remove outdated comment Bench: 1258079 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: Fri Oct 27 17:33:59 2023 +0200 Timestamp: 1698420839 Format Code 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: 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 |