Michael Vetter
14fec11c6e
OBS-URL: https://build.opensuse.org/package/show/games/stockfish?expand=0&rev=42
246 lines
11 KiB
Plaintext
246 lines
11 KiB
Plaintext
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Sun Feb 1 21:35:24 UTC 2026 - Michael Vetter <mvetter@suse.com>
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- Update to 18:
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Next-Generation Evaluation:
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* This release introduces the SFNNv10 network architecture. The network’s input
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layer has been augmented with 'Threat Inputs' features as part of a massive
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community effort. These features allow the engine to 'see' which pieces are
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threatened more naturally, resulting in more accurate evaluations.
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Hardware and Performance Optimizations:
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* A key highlight is the new 'Shared Memory' implementation, which allows
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different Stockfish processes to share the same memory space for neural
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network weights. This makes it the most efficient version for cloud
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analysis and high-concurrency testing.
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* Significant efforts have also been made to utilize hardware more
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effectively by adapting the code to make use of modern CPU instructions and
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refining how threads interact during a search.
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Search Improvements:
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* Stockfish 18 features a heavily refined search, utilizing 'Correction
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History' to dynamically adjust evaluations based on patterns found during
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the search itself. These and other refinements allow the engine to detect
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stalemates and evaluate fortresses significantly better than previous
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versions. A particularly rare issue, involving threefold repetition
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detection, en passant, and pins, was also fixed.
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Refactored Training Workflow:
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* The training of Stockfish's neural networks has transitioned to an
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automated and reproducible model. This new framework allows the project to
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employ standardized recipes to chain complex training stages together. This
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transition facilitates the training of networks using over 100 billion
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positions of Lc0 evaluation data.
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- Update stockfish-remove-net.patch
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Wed Apr 2 13:40:32 UTC 2025 - Michael Vetter <mvetter@suse.com>
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- Update to 17.1:
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* Quality of chess play
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In our testing against its predecessor, Stockfish 17.1 shows a
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consistent improvement in performance, with an Elo gain of up
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to 20 points and winning close to 2 times more game pairs than
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it loses.
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* New speedtest command
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The new speedtest command benchmarks your computer's performance (measured
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in nodes per second) using a realistic and stable test. To run it, you'll
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need command line access—give it a try and share your results with the community!
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* Improved hardware support
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Stockfish is no longer limited to 1024 threads and will allow users to specify
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whatever their system is capable of. Additionally, hardware such as ppc64 and
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Loongson is now better supported at build time.
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* Bug fixes for tablebase support
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Our previous release introduced improved engine lines (principal variations)
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ending in mate as soon as a mate score is announced. A side effect of this
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improvement was a rare corner case involving cursed tablebase wins, only relevant
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in correspondence chess when the 50-move rule does not apply, which has now been
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fixed. Relatedly, time management has also been improved to avoid potential time losses.
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-------------------------------------------------------------------
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Mon Sep 9 06:09:08 UTC 2024 - Michael Vetter <mvetter@suse.com>
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- Update to 17:
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* Improved engine lines
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This release introduces principal variations (PVs) that are more
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informative for mate and decisive table base (TB) scores. In both
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cases, the PV will contain all moves up to checkmate. For mate scores,
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the PV shown is the best variation known to the engine at that point,
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while for table base wins, it follows, based on the TB, a sequence of
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moves that preserves the game outcome to checkmate.
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* NUMA performance optimization
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For high-end computers with multiple CPUs (typically a dual-socket
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architecture with 100+ cores), this release automatically improves
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performance with a NumaPolicy setting that optimizes non-uniform memory
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access (NUMA). Although typical consumer hardware will not benefit,
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speedups of up to 2.8x have been measured.
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- Update date.pach, stockfish-remove-net.patch
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Mon Feb 26 12:09:26 UTC 2024 - Michael Vetter <mvetter@suse.com>
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- Update to 16.1:
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* In our testing against its predecessor, Stockfish 16.1 shows a
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notable improvement in performance, with an Elo gain of up to
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27 points and winning over 2 times more game pairs than it loses.
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* Updated neural network architecture: The neural network architecture
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has undergone two updates and is currently in its 8th version.
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* Removal of handcrafted evaluation (HCE): This release marks the
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removal of the traditional handcrafted evaluation and the transition
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to a fully neural network-based approach.
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* Dual NNUE: For the first time, Stockfish includes a secondary neural
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network, used to quickly evaluate positions that are easily decided.
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* Use NNUE and UCI_AnalyseMode have been removed as they no longer had
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any effect. SlowMover has also been removed in favor of Move Overhead.
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- Use %autosetup macro. Allows to eliminate the usage of deprecated PatchN.
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Tue Dec 6 15:15:03 UTC 2022 - Michael Vetter <mvetter@suse.com>
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- Update to 15.1:
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* Elo gain and competition results:
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With this release, version 5 of the NNUE neural net architecture
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has been introduced, and the training data has been extended to
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include Fischer random chess (FRC) positions. As a result, Elo
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gains are largest for FRC, reaching up to 50 Elo for doubly
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randomized FRC (DFRC). More importantly, also for standard chess
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this release progressed and will win two times more game pairs than
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it loses against Stockfish 15.
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* New evaluation:
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This release also introduces a new convention for the evaluation
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that is reported by search. An evaluation of +1 is now no longer
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tied to the value of one pawn, but to the likelihood of winning the
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game. With a +1 evaluation, Stockfish has now a 50% chance of winning
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the game against an equally strong opponent. This convention scales
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down evaluations a bit compared to Stockfish 15 and allows for
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consistent evaluations in the future.
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- Refresh:
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* date.patch
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* stockfish-remove-net.patch
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- Remove nn-6877cd24400e.nnue
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- Add nn-ad9b42354671.nnue
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- Keep man page and stockfish-interface.txt but remove URL from
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Source. Because not available anymore.
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Wed Apr 20 19:17:58 UTC 2022 - Michael Vetter <mvetter@suse.com>
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- Update to 15:
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Stockfish 15 continues to push the boundaries of chess, providing
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unrivalled analysis and playing strength. In our testing, Stockfish
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15 is ahead of Stockfish 14 by 36 Elo points and wins nine times
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more game pairs than it loses.
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- Add stockfish-remove-net.patch: Don't try to donwload nnue
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we already have it.
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Sun Mar 27 18:37:33 UTC 2022 - Dirk Müller <dmueller@suse.com>
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- update to 14.1:
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Compared to Stockfish 14, this release introduces a more advanced NNUE
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architecture and various search improvements. In self play testing, using a
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book of balanced openings, Stockfish 14.1 wins three times more game pairs than
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it loses. At this high level, draws are very common, so the Elo difference to
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Stockfish 14 is about 17 Elo
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Fri Jul 9 08:34:14 UTC 2021 - Stephan Kulow <coolo@suse.com>
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- Update to version 14:
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The engine is now significantly stronger than just a few months
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ago, and wins four times more game pairs than it loses against
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the previous release version.
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Stockfish 14 is now at least 400 Elo ahead of Stockfish 7, a
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top engine in 2016. During the last five years, Stockfish has thus
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gained about 80 Elo per year.
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- Refresh date.patch
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-------------------------------------------------------------------
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Thu Apr 29 09:44:29 UTC 2021 - Ferdinand Thiessen <rpm@fthiessen.de>
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- Update to version 13:
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* Significantly stronger than any of its predecessors:
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Stockfish 13 outperforms Stockfish 12 by at least 35 Elo
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* When playing against a one-year-old Stockfish, it wins 60 times
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more game pairs than it loses
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* An NNUE network retrained on billions of positions
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* Much faster network evaluation code
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* Significantly improved search heuristics
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* Additional evaluation tweaks
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- Drop update-nnue.patch in favor of the release one
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- Use SourceUrl for nnue
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Sat Oct 10 00:00:00 CEST 2020 - dsterba@suse.cz
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- Update to version 12:
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* 130 Elo stronger than version 11
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* powered by NNUE (nn-baeb9ef2d183.nnue)
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* More at https://github.com/official-stockfish/Stockfish/commit/c306d838697011da0a960758dde3f7ede6849060
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* Added patch: update-nnue.patch
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Mon Jan 20 08:12:08 UTC 2020 - Michael Vetter <mvetter@suse.com>
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- Update to version 11:
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* 50 Elo stronger than the last version
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* For detail see:
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https://github.com/official-stockfish/Stockfish/commit/c3483fa9a7d7c0ffa9fcc32b467ca844cfb63790
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Tue Dec 11 14:04:17 UTC 2018 - Jan Engelhardt <jengelh@inai.de>
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- Trim redundant wording.
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-------------------------------------------------------------------
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Fri Nov 30 09:46:12 UTC 2018 - mvetter@suse.com
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- Update to version 10
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* Upstream does not provide a change log. Please see the git
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history at https://github.com/official-stockfish/Stockfish/
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for more details.
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-------------------------------------------------------------------
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Mon Jul 16 14:24:48 UTC 2018 - msuchanek@suse.com
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- gcc-c++-32bit is needed to build 32bit code (boo#1101338).
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Mon Feb 5 12:23:05 UTC 2018 - mvetter@suse.com
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- Update to version 9
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* Simplify away redundant SEE pruning condition
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* Limit the king distance factor when evaluating passed pawns
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* Simplify verification search
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* Many other improvements
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Sun Nov 20 14:52:27 UTC 2016 - rpm@fthiessen.de
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- Fixed architecture detection in spec file.
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-------------------------------------------------------------------
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Fri Nov 4 15:56:52 UTC 2016 - mvetter@suse.com
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- Update to version 8
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-------------------------------------------------------------------
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Mon Jun 13 10:20:17 UTC 2016 - psimons@suse.com
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- Install license file as part of the documentation.
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-------------------------------------------------------------------
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Fri Jun 3 08:22:46 UTC 2016 - psimons@suse.com
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- Drop Stockfish-CMakeLists.txt and stockfish-polyglot.ini. These
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files aren't necessary for building (or running) Stockfish.
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-------------------------------------------------------------------
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Thu Apr 28 09:39:23 UTC 2016 - mvetter@suse.com
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- Update to version 7
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- Added date.patch: Get rid of __DATE__
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-------------------------------------------------------------------
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Tue Sep 1 16:40:38 UTC 2015 - mvetter@suse.com
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- Initial package for version 6
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