| 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 Apr 22 08:09:40 2022 +0200 Timestamp: 1650607780 Simplify away best move count logic the only place where it was used it was true with >99% probability so it seemed to not be doing much any more. Passed STC: https://tests.stockfishchess.org/tests/view/625f4778d00da81c22dd4c93 LLR: 2.95 (-2.94,2.94) <-2.25,0.25> Total: 85152 W: 22487 L: 22406 D: 40259 Elo +0.33 Ptnml(0-2): 313, 9035, 23818, 9078, 332 Passed LTC: https://tests.stockfishchess.org/tests/view/625ff1f1b03f22647441a215 LLR: 2.94 (-2.94,2.94) <-2.25,0.25> Total: 66776 W: 17768 L: 17673 D: 31335 Elo +0.49 Ptnml(0-2): 46, 6200, 20792, 6313, 37 close https://github.com/official-stockfish/Stockfish/pull/3993 bench 7280798 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 Apr 19 19:59:04 2022 +0200 Timestamp: 1650391144 Update default net to nn-d0b74ce1e5eb.nnue train a net using training data with a heavier weight on positions having 16 pieces on the board. More specifically, with a relative weight of `i * (32-i)/(16 * 16)+1` (where i is the number of pieces on the board). This is done with the trainer branch https://github.com/glinscott/nnue-pytorch/pull/173 The command used is: ``` python train.py $datafile $datafile $restarttype $restartfile --gpus 1 --threads 4 --num-workers 12 --random-fen-skipping=3 --batch-size 16384 --progress_bar_refresh_rate 300 --smart-fen-skipping --features=HalfKAv2_hm^ --lambda=1.00 --max_epochs=$epochs --seed $RANDOM --default_root_dir exp/run_$i ``` The datafile is T60T70wIsRightFarseerT60T74T75T76.binpack, the restart is from the master net. passed STC: LLR: 2.94 (-2.94,2.94) <0.00,2.50> Total: 22728 W: 6197 L: 5945 D: 10586 Elo +3.85 Ptnml(0-2): 105, 2453, 6001, 2695, 110 https://tests.stockfishchess.org/tests/view/625cf944ff677a888877cd90 passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,3.00> Total: 35664 W: 9535 L: 9264 D: 16865 Elo +2.64 Ptnml(0-2): 30, 3524, 10455, 3791, 32 https://tests.stockfishchess.org/tests/view/625d3c32ff677a888877d7ca closes https://github.com/official-stockfish/Stockfish/pull/3989 Bench: 7269563 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 Apr 18 23:05:24 2022 +0200 Timestamp: 1650315924 Restore development version 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 Apr 18 22:03:20 2022 +0200 Timestamp: 1650312200 Stockfish 15 Official release version of Stockfish 15 Bench: 8129754 --- A new major release of Stockfish is now available at https://stockfishchess.org Stockfish 15 continues to push the boundaries of chess, providing unrivalled analysis and playing strength. In our testing, Stockfish 15 is ahead of Stockfish 14 by 36 Elo points and wins nine times more game pairs than it loses[1]. Improvements to the engine have made it possible for Stockfish to end up victorious in tournaments at all sorts of time controls ranging from bullet to classical and even at Fischer random chess[2]. At CCC, Stockfish won all of the latest tournaments: CCC 16 Bullet, Blitz and Rapid, CCC 960 championship, and the CCC 17 Rapid. At TCEC, Stockfish won the Season 21, Cup 9, FRC 4 and in the current Season 22 superfinal, at the time of writing, has won 16 game pairs and not yet lost a single one. This progress is the result of a dedicated team of developers that comes up with new ideas and improvements. For Stockfish 15, we tested nearly 13000 different changes and retained the best 200. These include the fourth generation of our NNUE network architecture, as well as various search improvements. To perform these tests, contributors provide CPU time for testing, and in the last year, they have collectively played roughly a billion chess games. In the last few years, our distributed testing framework, Fishtest, has been operated superbly and has been developed and improved extensively. This work by Pasquale Pigazzini, Tom Vijlbrief, Michel Van den Bergh, and various other developers[3] is an essential part of the success of the Stockfish project. Indeed, the Stockfish project builds on a thriving community of enthusiasts to offer a free and open-source chess engine that is robust, widely available, and very strong. We invite our chess fans to join the Fishtest testing framework and programmers to contribute to the project[4]. The Stockfish team [1] https://tests.stockfishchess.org/tests/view/625d156dff677a888877d1be [2] https://en.wikipedia.org/wiki/Stockfish_(chess)#Competition_results [3] https://github.com/glinscott/fishtest/blob/master/AUTHORS [4] https://stockfishchess.org/get-involved/ 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: KJE-98
Date: Sun Apr 17 21:38:05 2022 +0200 Timestamp: 1650224285 Decrease LMR at PV nodes with low depth. This patch lessens the Late Move Reduction at PV nodes with low depth. Previously the affect of depth on LMR was independant of nodeType. The idea behind this patch is that at PV nodes, LMR at low depth is will miss out on potential alpha-raising moves. Passed STC: https://tests.stockfishchess.org/tests/view/625aa867d3367522c4b8965c LLR: 2.93 (-2.94,2.94) <0.00,2.50> Total: 19360 W: 5252 L: 5006 D: 9102 Elo +4.41 Ptnml(0-2): 79, 2113, 5069, 2321, 98 Passed LTC: https://tests.stockfishchess.org/tests/view/625ae844d3367522c4b8a009 LLR: 2.94 (-2.94,2.94) <0.50,3.00> Total: 39264 W: 10636 L: 10357 D: 18271 Elo +2.47 Ptnml(0-2): 18, 3928, 11473, 4183, 30 closes https://github.com/official-stockfish/Stockfish/pull/3985 bench: 8129754 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 Apr 16 08:41:51 2022 +0200 Timestamp: 1650091311 Tuning classical and NNUE scaling terms changes to parameters in both classical and NNUE scaling, following up from an earlier successful #3958 passed STC: LLR: 2.95 (-2.94,2.94) <0.00,2.50> Total: 23936 W: 6490 L: 6234 D: 11212 Elo +3.72 Ptnml(0-2): 107, 2610, 6306, 2810, 135 https://tests.stockfishchess.org/tests/view/625820aa33c40bb9d964e6ae passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,3.00> Total: 50376 W: 13629 L: 13327 D: 23420 Elo +2.08 Ptnml(0-2): 20, 4979, 14920, 5217, 52 https://tests.stockfishchess.org/tests/view/62584592c1d7f5008a33a4d1 closes https://github.com/official-stockfish/Stockfish/pull/3982 Bench: 6964954 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: Sat Apr 16 08:36:37 2022 +0200 Timestamp: 1650090997 Update WDL model for current SF This updates the WDL model based on the LTC statistics for the last month (8M games). for old results see: https://github.com/official-stockfish/Stockfish/pull/3582 https://github.com/official-stockfish/Stockfish/pull/2778 the model changed a bit from the past, some images to follow in the PR closes https://github.com/official-stockfish/Stockfish/pull/3981 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: Sat Apr 16 08:35:31 2022 +0200 Timestamp: 1650090931 Update CPU contributors closes https://github.com/official-stockfish/Stockfish/pull/3979 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: Topologist
Date: Tue Apr 12 17:43:50 2022 +0200 Timestamp: 1649778230 Use NNUE in low piece endgames close to the root. This patch enforces that NNUE evaluation is used for endgame positions at shallow depth (depth <= 9). Classic evaluation will still be used for high imbalance positions when the depth is high or there are many pieces. Passed STC: https://tests.stockfishchess.org/tests/view/624c193b3a8a6ac93892dc27 LLR: 2.94 (-2.94,2.94) <0.00,2.50> Total: 255840 W: 68024 L: 67362 D: 120454 Elo +0.90 Ptnml(0-2): 1074, 27089, 70926, 27763, 1068 Passed LTC: https://tests.stockfishchess.org/tests/view/624e8675e9e7821808467f77 LLR: 2.94 (-2.94,2.94) <0.50,3.00> Total: 67088 W: 17784 L: 17454 D: 31850 Elo +1.71 Ptnml(0-2): 45, 6209, 20715, 6521, 54 closes https://github.com/official-stockfish/Stockfish/pull/3978 bench: 6602222 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: Fri Apr 1 10:55:11 2022 +0200 Timestamp: 1648803311 Minor cleanups simplify and relocate to position.cpp some of the recent threat calculations used in the movepicker. passed STC: https://tests.stockfishchess.org/tests/view/62468c301f682ea45ce3b3b9 LLR: 2.96 (-2.94,2.94) <-2.25,0.25> Total: 76544 W: 20247 L: 20152 D: 36145 Elo +0.43 Ptnml(0-2): 327, 8113, 21317, 8168, 347 closes https://github.com/official-stockfish/Stockfish/pull/3972 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: Topologist
Date: Mon Mar 28 22:43:52 2022 +0200 Timestamp: 1648500232 Play more positional in endgames This patch chooses the delta value (which skews the nnue evaluation between positional and materialistic) depending on the material: If the material is low, delta will be higher and the evaluation is shifted to the positional value. If the material is high, the evaluation will be shifted to the psqt value. I don't think slightly negative values of delta should be a concern. Passed STC: https://tests.stockfishchess.org/tests/view/62418513b3b383e86185766f LLR: 2.94 (-2.94,2.94) <0.00,2.50> Total: 28808 W: 7832 L: 7564 D: 13412 Elo +3.23 Ptnml(0-2): 147, 3186, 7505, 3384, 182 Passed LTC: https://tests.stockfishchess.org/tests/view/62419137b3b383e861857842 LLR: 2.96 (-2.94,2.94) <0.50,3.00> Total: 58632 W: 15776 L: 15450 D: 27406 Elo +1.93 Ptnml(0-2): 42, 5889, 17149, 6173, 63 closes https://github.com/official-stockfish/Stockfish/pull/3971 Bench: 7588855 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: Mon Mar 28 22:37:09 2022 +0200 Timestamp: 1648499829 In movepicker increase priority for moves that evade a capture This idea is a mix of koivisto idea of threat history and heuristic that was simplified some time ago in LMR - decreasing reduction for moves that evade a capture. Instead of doing so in LMR this patch does it in movepicker - to do this it calculates squares that are attacked by different piece types and pieces that are located on this squares and boosts up weight of moves that make this pieces land on a square that is not under threat. Boost is greater for pieces with bigger material values. Special thanks to koivisto and seer authors for explaining me ideas behind threat history. Passed STC: https://tests.stockfishchess.org/tests/view/62406e473b32264b9aa1478b LLR: 2.94 (-2.94,2.94) <0.00,2.50> Total: 19816 W: 5320 L: 5072 D: 9424 Elo +4.35 Ptnml(0-2): 86, 2165, 5172, 2385, 100 Passed LTC: https://tests.stockfishchess.org/tests/view/62407f2e3b32264b9aa149c8 LLR: 2.94 (-2.94,2.94) <0.50,3.00> Total: 51200 W: 13805 L: 13500 D: 23895 Elo +2.07 Ptnml(0-2): 44, 5023, 15164, 5322, 47 closes https://github.com/official-stockfish/Stockfish/pull/3970 bench 7736491 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: Giacomo Lorenzetti
Date: Fri Mar 25 20:14:00 2022 +0100 Timestamp: 1648235640 Remove pos.capture_or_promotion() This patch replaces `pos.capture_or_promotion()` with `pos.capture()` and comes after a few attempts with elo-gaining bounds, two of which failed yellow at LTC (https://tests.stockfishchess.org/tests/view/622f8f0cc9e950cbfc237024 and https://tests.stockfishchess.org/tests/view/62319a8bb3b498ba71a6b2dc). Passed non-regression STC: https://tests.stockfishchess.org/tests/view/623aff7eea447151c74828d3 LLR: 2.94 (-2.94,2.94) <-2.25,0.25> Total: 246864 W: 65462 L: 65618 D: 115784 Elo -0.22 Ptnml(0-2): 1201, 28116, 65001, 27866, 1248 Passed non-regression LTC: https://tests.stockfishchess.org/tests/view/623c1fdcea447151c7484fb0 LLR: 2.94 (-2.94,2.94) <-2.25,0.25> Total: 30120 W: 8125 L: 7978 D: 14017 Elo +1.70 Ptnml(0-2): 22, 2993, 8881, 3144, 20 closes https://github.com/official-stockfish/Stockfish/pull/3968 Bench: 6847732 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: Sat Mar 19 13:40:35 2022 +0100 Timestamp: 1647693635 Remove ttPv tree shrinking. Via the ttPv flag an implicit tree of current and former PV nodes is maintained. In addition this tree is grown or shrinked at the leafs dependant on the search results. But now the shrinking step has been removed. As the frequency of ttPv nodes decreases with depth the shown scaling behavior (STC barely passed but LTC scales well) of the tests was expected. STC: LLR: 2.93 (-2.94,2.94) <-2.25,0.25> Total: 270408 W: 71593 L: 71785 D: 127030 Elo -0.25 Ptnml(0-2): 1339, 31024, 70630, 30912, 1299 https://tests.stockfishchess.org/tests/view/622fbf9dc9e950cbfc2376d6 LTC: LLR: 2.96 (-2.94,2.94) <-2.25,0.25> Total: 34368 W: 9135 L: 8992 D: 16241 Elo +1.45 Ptnml(0-2): 28, 3423, 10135, 3574, 24 https://tests.stockfishchess.org/tests/view/62305257c9e950cbfc238964 closes https://github.com/official-stockfish/Stockfish/pull/3963 Bench: 7044203 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: Sun Mar 13 08:17:02 2022 +0100 Timestamp: 1647155822 Small cleanups (2) - fix a small compile error under MSVC - improve sigmoid comment and assert - fix formatting in README.md closes https://github.com/official-stockfish/Stockfish/pull/3960 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: Giacomo Lorenzetti
Date: Sat Mar 12 09:38:34 2022 +0100 Timestamp: 1647074314 Small cleanups Delete cast to int in movepick. update AUTHORS. adjust assert in sigmoid. fix spelling mistakes in README closes https://github.com/official-stockfish/Stockfish/pull/3922 closes https://github.com/official-stockfish/Stockfish/pull/3948 closes https://github.com/official-stockfish/Stockfish/pull/3942 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 Mar 12 09:25:58 2022 +0100 Timestamp: 1647073558 Improvements in Evaluation adjust parameters in classical evaluation and NNUE scaling. STC: LLR: 2.95 (-2.94,2.94) <0.00,2.50> Total: 37104 W: 9983 L: 9701 D: 17420 Elo +2.64 Ptnml(0-2): 154, 4187, 9651, 4343, 217 https://tests.stockfishchess.org/tests/view/6228cb13a9d47c8160e885ba LTC: LLR: 2.94 (-2.94,2.94) <0.50,3.00> Total: 266792 W: 71101 L: 70295 D: 125396 Elo +1.05 Ptnml(0-2): 214, 26928, 78353, 27640, 261 https://tests.stockfishchess.org/tests/view/6228d3c4a9d47c8160e887b0 closes https://github.com/official-stockfish/Stockfish/pull/3958 Bench: 6739741 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: Tue Mar 8 20:19:42 2022 +0100 Timestamp: 1646767182 Decrease reductions in Lmr for some Pv nodes This patch makes us reduce less in Lmr at pv nodes in case of static eval being far away from static evaluation of position. Idea is that if it's the case then probably position is pretty complex so we can't be sure about how reliable LMR is so we need to reduce less. Passed STC: https://tests.stockfishchess.org/tests/view/6226276aa9d47c8160e81220 LLR: 2.94 (-2.94,2.94) <0.00,2.50> Total: 262696 W: 69944 L: 69239 D: 123513 Elo +0.93 Ptnml(0-2): 1399, 29702, 68436, 30417, 1394 Passed LTC: https://tests.stockfishchess.org/tests/view/6226b002a9d47c8160e82b91 LLR: 2.95 (-2.94,2.94) <0.50,3.00> Total: 64008 W: 17320 L: 16982 D: 29706 Elo +1.83 Ptnml(0-2): 60, 6378, 18811, 6674, 81 closes https://github.com/official-stockfish/Stockfish/pull/3957 bench 6678390 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: Ben Chaney
Date: Wed Mar 2 23:39:08 2022 +0100 Timestamp: 1646260748 Generalize the feature transform to use vec_t macros This commit generalizes the feature transform to use vec_t macros that are architecture defined instead of using a seperate code path for each one. It should make some old architectures (MMX, including improvements by Fanael) faster and make further such improvements easier in the future. Includes some corrections to CI for mingw. closes https://github.com/official-stockfish/Stockfish/pull/3955 closes https://github.com/official-stockfish/Stockfish/pull/3928 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: Giacomo Lorenzetti
Date: Tue Mar 1 17:51:37 2022 +0100 Timestamp: 1646153497 Sort captures This patch (partially) sort captures in analogy to quiet moves. All three movepickers are affected, hence `depth` is added as an argument in probcut's. Passed STC: https://tests.stockfishchess.org/tests/view/621a4576da649bba32ef6fd4 LLR: 2.95 (-2.94,2.94) <0.00,2.50> Total: 103848 W: 27884 L: 27473 D: 48491 Elo +1.38 Ptnml(0-2): 587, 11691, 26974, 12068, 604 Passed LTC: https://tests.stockfishchess.org/tests/view/621aaa5bda649bba32ef7c2d LLR: 2.96 (-2.94,2.94) <0.50,3.00> Total: 212032 W: 56420 L: 55739 D: 99873 Elo +1.12 Ptnml(0-2): 198, 21310, 62348, 21933, 227 closes https://github.com/official-stockfish/Stockfish/pull/3952 Bench: 6833580 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: Tue Mar 1 17:51:02 2022 +0100 Timestamp: 1646153462 Use dynamic allocation for evaluation scratch TLS buffer. fixes #3946 an issue related with the toolchain as found in xcode 12 on macOS, related to previous commit 5f781d36. closes https://github.com/official-stockfish/Stockfish/pull/3950 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: mstembera
Date: Fri Feb 25 08:37:57 2022 +0100 Timestamp: 1645774677 Clean up and simplify some nnue code. Remove some unnecessary code and it's execution during inference. Also the change on line 49 in nnue_architecture.h results in a more efficient SIMD code path through ClippedReLU::propagate(). passed STC: https://tests.stockfishchess.org/tests/view/6217d3bfda649bba32ef25d5 LLR: 2.94 (-2.94,2.94) <-2.25,0.25> Total: 12056 W: 3281 L: 3092 D: 5683 Elo +5.45 Ptnml(0-2): 55, 1213, 3312, 1384, 64 passed STC SMP: https://tests.stockfishchess.org/tests/view/6217f344da649bba32ef295e LLR: 2.94 (-2.94,2.94) <-2.25,0.25> Total: 27376 W: 7295 L: 7137 D: 12944 Elo +2.01 Ptnml(0-2): 52, 2859, 7715, 3003, 59 closes https://github.com/official-stockfish/Stockfish/pull/3944 No functional change bench: 6820724 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: Sun Feb 20 23:01:22 2022 +0100 Timestamp: 1645394482 Adjust usage of LMR for 2nd move in move ordering Current master prohibits usage of LMR for 2nd move at rootNode. This patch also disables LMR for 2nd move not only at rootNode but also at first PvNode that is a reply to rootNode. passed STC: https://tests.stockfishchess.org/tests/view/620e8c9026f5b17ec885143a LLR: 2.94 (-2.94,2.94) <0.00,2.50> Total: 54096 W: 14305 L: 13996 D: 25795 Elo +1.98 Ptnml(0-2): 209, 6075, 14192, 6342, 230 passed LTC: https://tests.stockfishchess.org/tests/view/620eb327b1792e8985f81fb8 LLR: 2.94 (-2.94,2.94) <0.50,3.00> Total: 110864 W: 29602 L: 29156 D: 52106 Elo +1.40 Ptnml(0-2): 112, 11147, 32455, 11619, 99 closes https://github.com/official-stockfish/Stockfish/pull/3940 bench 6820724 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: Sun Feb 20 22:59:19 2022 +0100 Timestamp: 1645394359 Fix clang warning on unused variable mark variable as used. fixes https://github.com/official-stockfish/Stockfish/issues/3900 closes https://github.com/official-stockfish/Stockfish/pull/3941 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: ppigazzini
Date: Sun Feb 20 22:56:11 2022 +0100 Timestamp: 1645394171 Add ARM NDK to Github Actions matrix - set the variable only for the required tests to keep simple the yml file - use NDK 21.x until will be fixed the Stockfish static build problem with NDK 23.x - set the test for armv7, armv7-neon, armv8 builds: - use armv7a-linux-androideabi21-clang++ compiler for armv7 armv7-neon - enforce a static build - silence the Warning for the unused compilation flag "-pie" with the static build, otherwise the Github workflow stops - use qemu to bench the build and get the signature Many thanks to @pschneider1968 that made all the hard work with NDK :) closes https://github.com/official-stockfish/Stockfish/pull/3924 No functional change see source |