| 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 Mar 3 15:01:29 2024 +0100 Timestamp: 1709474489 Restore development closes https://github.com/official-stockfish/Stockfish/pull/5073 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: Sat Feb 24 18:15:04 2024 +0100 Timestamp: 1708794904 Stockfish 16.1 Official release version of Stockfish 16.1 Bench: 1303971 --- Stockfish 16.1 Today, we have the pleasure to announce Stockfish 16.1. As always, you can freely download it at https://stockfishchess.org/download and use it in the GUI of your choice[1]. Don't forget to join our Discord server[2] to get in touch with the community of developers and users of the project! *Quality of chess play* In our testing against its predecessor, Stockfish 16.1 shows a notable improvement in performance, with an Elo gain of up to 27 points and winning over 2 times more game pairs[3] than it loses. *Update highlights* *Improved evaluation* - Updated neural network architecture: The neural network architecture has undergone two updates and is currently in its 8th version[4]. - Removal of handcrafted evaluation (HCE): This release marks the removal of the traditional handcrafted evaluation and the transition to a fully neural network-based approach[5]. - Dual NNUE: For the first time, Stockfish includes a secondary neural network[6], used to quickly evaluate positions that are easily decided. *UCI Options removed* `Use NNUE` and `UCI_AnalyseMode`[7] have been removed as they no longer had any effect. `SlowMover`[8] has also been removed in favor of `Move Overhead`. *More binaries* We now offer 13 new binaries. These new binaries include `avx512`, `vnni256`, `vnni512`, `m1-apple-silicon`, and `armv8-dotprod`, which take advantage of specific CPU instructions for improved performance. For most users, using `sse41-popcnt` (formerly `modern`), `avx2`, or `bmi2` should be enough, but if your CPU supports these new instructions, feel free to try them! *Development changes* - Updated testing book: This new book[9], now derived exclusively from the open Lichess database[10], is 10 times larger than its predecessor, and has been used to test potential improvements to Stockfish over the past few months. - Consolidation of repositories: Aiming to simplify access to our resources, we have moved most Stockfish-related repositories into the official Stockfish organization[11] on GitHub. - Growing maintainer team: We welcome Disservin[12] to the team of maintainers of the project! This extra pair of hands will ensure the lasting success of Stockfish. *Thank you* The Stockfish project builds on a thriving community of enthusiasts (thanks everybody!) who contribute their expertise, time, and resources to build a free and open-source chess engine that is robust, widely available, and very strong. We would like to express our gratitude for the 10k stars[13] that light up our GitHub project! Thank you for your support and encouragement – your recognition means a lot to us. We invite our chess fans to join the Fishtest testing framework[14], and programmers to contribute to the project either directly to Stockfish[15] (C++), to Fishtest[16] (HTML, CSS, JavaScript, and Python), to our trainer nnue-pytorch[17] (C++ and Python), or to our website[18] (HTML, CSS/SCSS, and JavaScript). The Stockfish team [1] https://github.com/official-stockfish/Stockfish/wiki/Download-and-usage#download-a-chess-gui [2] https://discord.gg/GWDRS3kU6R [3] https://tests.stockfishchess.org/tests/view/65d666051d8e83c78bfddbd8 [4] https://github.com/official-stockfish/nnue-pytorch/blob/master/docs/nnue.md#sfnnv8-architecture [5] https://github.com/official-stockfish/Stockfish/commit/af110e0 [6] https://github.com/official-stockfish/Stockfish/commit/584d9ef [7] https://github.com/official-stockfish/Stockfish/commit/c53d2ec [8] https://github.com/official-stockfish/Stockfish/commit/536d692 [9] https://github.com/official-stockfish/books/commit/426eca4 [10] https://database.lichess.org/ [11] https://github.com/official-stockfish/ [12] https://github.com/Disservin [13] https://github.com/official-stockfish/Stockfish/stargazers [14] https://github.com/official-stockfish/fishtest/wiki/Running-the-worker [15] https://github.com/official-stockfish/Stockfish [16] https://github.com/official-stockfish/fishtest [17] https://github.com/official-stockfish/nnue-pytorch [18] https://github.com/official-stockfish/stockfish-web 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: Robert Nurnberg @ elitebook
Date: Sat Feb 24 17:59:41 2024 +0100 Timestamp: 1708793981 Update the WDL model Based on 130M positions from 2.1M games. ``` Look recursively in directory pgns for games from SPRT tests using books matching "UHO_4060_v..epd|UHO_Lichess_4852_v1.epd" for SF revisions between 8e75548f2a10969c1c9211056999efbcebe63f9a (from 2024-02-17 17:11:46 +0100) and HEAD (from 2024-02-17 17:13:07 +0100). Based on 127920843 positions from 2109240 games, NormalizeToPawnValue should change from 345 to 356. ``` The patch only affects the UCI-reported cp and wdl values. closes https://github.com/official-stockfish/Stockfish/pull/5070 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: Sat Feb 24 17:58:44 2024 +0100 Timestamp: 1708793924 Update Top CPU Contributors closes https://github.com/official-stockfish/Stockfish/pull/5069 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: Sat Feb 24 17:57:49 2024 +0100 Timestamp: 1708793869 Expose EvalFileSmall option for small net Since https://github.com/official-stockfish/fishtest/pull/1870 has been merged it's time for this update. 5k Fixed Games showed no problems. https://tests.stockfishchess.org/tests/view/65d9cc274c0e22b904f574d7 closes https://github.com/official-stockfish/Stockfish/pull/5068 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: Sat Feb 17 17:13:07 2024 +0100 Timestamp: 1708186387 Simplify PV node reduction Reduce less on PV nodes even with an upperbound TT entry. Passed STC: https://tests.stockfishchess.org/tests/view/65cb3a861d8e83c78bfd0497 LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 118752 W: 30441 L: 30307 D: 58004 Elo +0.39 Ptnml(0-2): 476, 14179, 29921, 14335, 465 Passed LTC: https://tests.stockfishchess.org/tests/view/65cd3b951d8e83c78bfd2b0d LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 155058 W: 38549 L: 38464 D: 78045 Elo +0.19 Ptnml(0-2): 85, 17521, 42219, 17632, 72 closes https://github.com/official-stockfish/Stockfish/pull/5057 Bench: 1303971 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: Sat Feb 17 17:11:46 2024 +0100 Timestamp: 1708186306 Update default main net to nn-b1a57edbea57.nnue Created by retraining the previous main net `nn-baff1edbea57.nnue` with: - some of the same options as before: ranger21, more WDL skipping - the addition of T80 nov+dec 2023 data - increasing loss by 15% when prediction is too high, up from 10% - use of torch.compile to speed up training by over 25% ```yaml experiment-name: 2560--S9-514G-T80-augtodec2023-more-wdl-skip-15p-more-loss-high-q-sk28 training-dataset: # https://github.com/official-stockfish/Stockfish/pull/4782 - /data/S6-514G-1ee1aba5ed.binpack - /data/test80-aug2023-2tb7p.v6.min.binpack - /data/test80-sep2023-2tb7p.binpack - /data/test80-oct2023-2tb7p.binpack - /data/test80-nov2023-2tb7p.binpack - /data/test80-dec2023-2tb7p.binpack early-fen-skipping: 28 start-from-engine-test-net: True nnue-pytorch-branch: linrock/nnue-pytorch/r21-more-wdl-skip-15p-more-loss-high-q-torch-compile num-epochs: 1000 lr: 4.375e-4 gamma: 0.995 start-lambda: 1.0 end-lambda: 0.7 ``` Epoch 819 trained with the above config led to this PR. Use of torch.compile decorators in nnue-pytorch model.py was found to speed up training by at least 25% on Ampere gpus when using recent pytorch compiled with cuda 12: https://catalog.ngc.nvidia.com/orgs/nvidia/containers/pytorch See recent main net PRs for more info on - ranger21 and more WDL skipping: https://github.com/official-stockfish/Stockfish/pull/4942 - increasing loss when Q is too high: https://github.com/official-stockfish/Stockfish/pull/4972 Training data can be found at: https://robotmoon.com/nnue-training-data/ Passed STC: https://tests.stockfishchess.org/tests/view/65cd76151d8e83c78bfd2f52 LLR: 2.98 (-2.94,2.94) <0.00,2.00> Total: 78336 W: 20504 L: 20115 D: 37717 Elo +1.73 Ptnml(0-2): 317, 9225, 19721, 9562, 343 Passed LTC: https://tests.stockfishchess.org/tests/view/65ce5be61d8e83c78bfd43e9 LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 41016 W: 10492 L: 10159 D: 20365 Elo +2.82 Ptnml(0-2): 22, 4533, 11071, 4854, 28 closes https://github.com/official-stockfish/Stockfish/pull/5056 Bench: 1351997 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: Sat Feb 17 17:10:13 2024 +0100 Timestamp: 1708186213 Simplify TT PV reduction This also removes some incorrect fail-high logic. Passed STC: https://tests.stockfishchess.org/tests/view/65cb3b641d8e83c78bfd04a9 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 87968 W: 22634 L: 22468 D: 42866 Elo +0.66 Ptnml(0-2): 315, 10436, 22323, 10588, 322 Passed LTC: https://tests.stockfishchess.org/tests/view/65cccee21d8e83c78bfd222c LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 70794 W: 17846 L: 17672 D: 35276 Elo +0.85 Ptnml(0-2): 44, 7980, 19189, 8126, 58 closes https://github.com/official-stockfish/Stockfish/pull/5055 Bench: 1474424 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: Gahtan Nahdi
Date: Sat Feb 17 17:08:01 2024 +0100 Timestamp: 1708186081 Remove penalty for quiet ttMove that fails low Passed STC non-reg: https://tests.stockfishchess.org/tests/view/65c691a7c865510db0286e6e LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 234336 W: 60258 L: 60255 D: 113823 Elo +0.00 Ptnml(0-2): 966, 28141, 58918, 28210, 933 Passed LTC non-reg: https://tests.stockfishchess.org/tests/view/65c8d0d31d8e83c78bfcd4a6 LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 235206 W: 59134 L: 59132 D: 116940 Elo +0.00 Ptnml(0-2): 135, 26908, 63517, 26906, 137 https://github.com/official-stockfish/Stockfish/pull/5054 Bench: 1287996 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: Wed Feb 14 21:39:31 2024 +0100 Timestamp: 1707943171 Use node counting to early stop search This introduces a form of node counting which can be used to further tweak the usage of our search time. The current approach stops the search when almost all nodes are searched on a single move. The idea originally came from Koivisto, but the implemention is a bit different, Koivisto scales the optimal time by the nodes effort and then determines if the search should be stopped. We just scale down the `totalTime` and stop the search if we exceed it and the effort is large enough. Passed STC: https://tests.stockfishchess.org/tests/view/65c8e0661d8e83c78bfcd5ec LLR: 2.97 (-2.94,2.94) <0.00,2.00> Total: 88672 W: 22907 L: 22512 D: 43253 Elo +1.55 Ptnml(0-2): 310, 10163, 23041, 10466, 356 Passed LTC: https://tests.stockfishchess.org/tests/view/65ca632b1d8e83c78bfcf554 LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 170856 W: 42910 L: 42320 D: 85626 Elo +1.20 Ptnml(0-2): 104, 18337, 47960, 18919, 108 closes https://github.com/official-stockfish/Stockfish/pull/5053 Bench: 1198939 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: Tierynn Byrnes
Date: Wed Feb 14 21:38:17 2024 +0100 Timestamp: 1707943097 Refactor timeman.cpp Move optExtra, optConstant and maxConstant into lower scope. closes https://github.com/official-stockfish/Stockfish/pull/5052 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: Wed Feb 14 21:27:55 2024 +0100 Timestamp: 1707942475 VVLTC search tune Search parameters were tuned using 16k games at VVLTC. They were tuned starting with the new parameters (in search only) of PR #5039. Passed VVLTC: https://tests.stockfishchess.org/tests/view/65c8a8fc1d8e83c78bfcd163 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 20826 W: 5355 L: 5100 D: 10371 Elo +4.25 Ptnml(0-2): 1, 1941, 6275, 2194, 2 Passed 2nd VVLTC: https://tests.stockfishchess.org/tests/view/65cadc2d1d8e83c78bfcfdaf LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 17710 W: 4611 L: 4352 D: 8747 Elo +5.08 Ptnml(0-2): 1, 1586, 5422, 1845, 1 STC Elo estimate: https://tests.stockfishchess.org/tests/view/65cb6aed1d8e83c78bfd0802 Elo: -1.46 ± 1.8 (95%) LOS: 5.5% Total: 40000 W: 10267 L: 10435 D: 19298 Elo -1.46 Ptnml(0-2): 200, 4860, 10023, 4742, 175 nElo: -2.77 ± 3.4 (95%) PairsRatio: 0.97 Bench: 1198939 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 Feb 11 20:13:19 2024 +0100 Timestamp: 1707678799 Format code using clang-format 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: Gahtan Nahdi
Date: Sun Feb 11 19:58:35 2024 +0100 Timestamp: 1707677915 Remove quiet tt move extensions Passed STC: https://tests.stockfishchess.org/tests/view/65c6934cc865510db0286e90 LLR: 2.99 (-2.94,2.94) <-1.75,0.25> Total: 54016 W: 14065 L: 13854 D: 26097 Elo +1.36 Ptnml(0-2): 231, 6381, 13581, 6576, 239 Passed LTC: https://tests.stockfishchess.org/tests/view/65c72b91c865510db0287a1a LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 55098 W: 13850 L: 13658 D: 27590 Elo +1.21 Ptnml(0-2): 37, 6257, 14777, 6433, 45 closes https://github.com/official-stockfish/Stockfish/pull/5049 Bench: 1027182 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 Feb 11 19:55:26 2024 +0100 Timestamp: 1707677726 Improve thread voting inefficiencies Initialize the unordered map to a reasonable number of buckets and make the move hashes well distributed. For more see https://github.com/official-stockfish/Stockfish/pull/4958#issuecomment-1937351190 Also make bestThreadPV and newThreadPV references so we don't copy entire vectors. closes https://github.com/official-stockfish/Stockfish/pull/5048 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: Michael Chaly
Date: Sun Feb 11 19:53:45 2024 +0100 Timestamp: 1707677625 Adjust best value in main search depending on depth This patch does similar thing to how it's done for qsearch - in case of fail high adjust result to lower value. Difference is that it is done only for non-pv nodes and it's depth dependent - so lower depth entries will have bigger adjustment and higher depth entries will have smaller adjustment. Passed STC: https://tests.stockfishchess.org/tests/view/65c3c0cbc865510db0283b21 LLR: 2.96 (-2.94,2.94) <0.00,2.00> Total: 112032 W: 29142 L: 28705 D: 54185 Elo +1.36 Ptnml(0-2): 479, 13152, 28326, 13571, 488 Passed LTC: https://tests.stockfishchess.org/tests/view/65c52e62c865510db02855d5 LLR: 2.96 (-2.94,2.94) <0.50,2.50> Total: 132480 W: 33457 L: 32936 D: 66087 Elo +1.37 Ptnml(0-2): 67, 14697, 36222, 15156, 98 closes https://github.com/official-stockfish/Stockfish/pull/5047 Bench: 1168241 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 Feb 11 19:52:00 2024 +0100 Timestamp: 1707677520 Assorted cleanups Assorted cleanups closes https://github.com/official-stockfish/Stockfish/pull/5046 No functional change Co-Authored-By: Shahin M. Shahin <41402573+> Co-Authored-By: cj5716 <125858804+> 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: GoldenRare
Date: Sun Feb 11 19:46:55 2024 +0100 Timestamp: 1707677215 Remove unnecessary assignments related to adjusted static evaluation In both search and qsearch, there are instances where we do unadjustedStaticEval = ss->staticEval = eval/bestValue = tte->eval(), but immediately after re-assign ss-static and eval/bestValue to some new value, which makes the initial assignment redundant. closes https://github.com/official-stockfish/Stockfish/pull/5045 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: Sun Feb 11 19:40:33 2024 +0100 Timestamp: 1707676833 Update CI actions - Update codeql to v3 - Switch from dev-drprasad to native github cli - Update softprops/action-gh-release to node 20 commit `thollander/actions-comment-pull-request` needs to be bumped to node20 too, but the author hasnt done so atm closes https://github.com/official-stockfish/Stockfish/pull/5044 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 9 19:06:25 2024 +0100 Timestamp: 1707501985 Fix the alignment of the transformer buffer Fixes the issue mentioned in https://github.com/official-stockfish/Stockfish/commit/584d9efedcde330eeb96a99215552ddfb06f52ba#r138417600. Thanks to @cj5716 and @peregrineshahin for spotting this! closes https://github.com/official-stockfish/Stockfish/pull/5042 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: Fri Feb 9 19:06:25 2024 +0100 Timestamp: 1707501985 Remove check extension Passed simplification STC: https://tests.stockfishchess.org/tests/view/65c38d2ac865510db02836cf LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 52288 W: 13578 L: 13371 D: 25339 Elo +1.38 Ptnml(0-2): 197, 6171, 13265, 6250, 261 Passed simplification LTC: https://tests.stockfishchess.org/tests/view/65c4470ec865510db0284473 LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 44958 W: 11255 L: 11055 D: 22648 Elo +1.55 Ptnml(0-2): 37, 4962, 12274, 5176, 30 closes https://github.com/official-stockfish/Stockfish/pull/5041 Bench: 1116591 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: gahtan-syarif
Date: Fri Feb 9 19:06:25 2024 +0100 Timestamp: 1707501985 Simplify opponent movecount reduction This removes the reduction decrease that occured when the previous ply had a movecount greater than 7. Passed STC: https://tests.stockfishchess.org/tests/view/65c3f6dac865510db0283ef6 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 11968 W: 3205 L: 2953 D: 5810 Elo +7.32 Ptnml(0-2): 38, 1310, 3064, 1506, 66 Passed LTC: https://tests.stockfishchess.org/tests/view/65c42377c865510db0284217 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 35676 W: 9113 L: 8905 D: 17658 Elo +2.03 Ptnml(0-2): 22, 3893, 9802, 4097, 24 closes https://github.com/official-stockfish/Stockfish/pull/5040 Bench: 1148379 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 Feb 9 19:06:25 2024 +0100 Timestamp: 1707501985 Remove simple eval With the recent introduction of the dual NNUE, the need for simple eval is no longer there. Passed STC: https://tests.stockfishchess.org/tests/view/65c1f735c865510db0281652 LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 85312 W: 22009 L: 21837 D: 41466 Elo +0.70 Ptnml(0-2): 334, 10155, 21567, 10205, 395 Passed LTC: https://tests.stockfishchess.org/tests/view/65c2d64bc865510db0282810 LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 49956 W: 12596 L: 12402 D: 24958 Elo +1.35 Ptnml(0-2): 28, 5553, 13624, 5743, 30 closes https://github.com/official-stockfish/Stockfish/pull/5037 Bench 1213676 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 Feb 9 19:06:25 2024 +0100 Timestamp: 1707501985 Tweak capture scoring for move ordering Move divisor from capture scoring to good capture check and sligthly increase it. This has several effects: - its a speedup because for quience and probcut search the division now never happens. For main search its delayed and can be avoided if a good capture triggers a cutoff - through the higher resolution of scores we have a more granular sorting STC: https://tests.stockfishchess.org/tests/view/65bf2a93c865510db027dc27 LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 470016 W: 122150 L: 121173 D: 226693 Elo +0.72 Ptnml(0-2): 2133, 55705, 118374, 56644, 2152 LTC: https://tests.stockfishchess.org/tests/view/65c1d16dc865510db0281339 LLR: 2.96 (-2.94,2.94) <0.50,2.50> Total: 98988 W: 25121 L: 24667 D: 49200 Elo +1.59 Ptnml(0-2): 77, 10998, 26884, 11464, 71 closes https://github.com/official-stockfish/Stockfish/pull/5036 Bench: 1233867 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 Feb 9 19:06:25 2024 +0100 Timestamp: 1707501985 Refactor the CI workflows This refactors the CI workflows to group some logic and makes sure that all (pre)release binaries are actually tested. The screenshot below shows the execution logic of the reworked ci, https://github.com/Disservin/Stockfish/actions/runs/7773581379. You can also hover over the cards to see the execution flow. The `matrix.json` and `arm_matrix.json` define the binaries which will be uploaded to GitHub. Afterwards a matrix is created and each job compiles a profile guided build for that arch and uploads that as an artifact to GitHub. The Binaries/ARM_Binaries workflow's are called when the previous step has been completed, and uploads all artifacts to the (pre)release. This also fixes some indentations and renames the workflows, see https://github.com/official-stockfish/Stockfish/actions, where every workflow is called `Stockfish` vs https://github.com/Disservin/Stockfish/actions. It also increases the parallel compilation used for make from `-j2 to -j4`. It now also prevents the prerelease action from running on forks. A test release can be viewed here https://github.com/Disservin/Stockfish/releases. closes https://github.com/official-stockfish/Stockfish/pull/5035 No functional change see source |