- Update to 16.1:
  * 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 than it loses.
  * Updated neural network architecture: The neural network architecture
    has undergone two updates and is currently in its 8th version.
  * 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.
  * Dual NNUE: For the first time, Stockfish includes a secondary neural
    network, used to quickly evaluate positions that are easily decided.
  * Use NNUE and UCI_AnalyseMode have been removed as they no longer had
    any effect. SlowMover has also been removed in favor of Move Overhead.
- Use %autosetup macro. Allows to eliminate the usage of deprecated PatchN.

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- Update to 15.1:
  * Elo gain and competition results:
    With this release, version 5 of the NNUE neural net architecture
    has been introduced, and the training data has been extended to
    include Fischer random chess (FRC) positions. As a result, Elo
    gains are largest for FRC, reaching up to 50 Elo for doubly
    randomized FRC (DFRC). More importantly, also for standard chess
    this release progressed and will win two times more game pairs than
    it loses against Stockfish 15. 
  * New evaluation:
    This release also introduces a new convention for the evaluation
    that is reported by search. An evaluation of +1 is now no longer
    tied to the value of one pawn, but to the likelihood of winning the
    game. With a +1 evaluation, Stockfish has now a 50% chance of winning
    the game against an equally strong opponent. This convention scales
    down evaluations a bit compared to Stockfish 15 and allows for
    consistent evaluations in the future.
- Refresh:
  * date.patch
  * stockfish-remove-net.patch
- Remove nn-6877cd24400e.nnue
- Add nn-ad9b42354671.nnue
- Keep man page and stockfish-interface.txt but remove URL from
  Source. Because not available anymore.

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- Update to 15:
  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.
- Add stockfish-remove-net.patch: Don't try to donwload nnue
  we already have it.

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- Update to version 11:
  * 50 Elo stronger than the last version
  * For detail see:
  https://github.com/official-stockfish/Stockfish/commit/c3483fa9a7d7c0ffa9fcc32b467ca844cfb63790

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version update

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Stockfish is a powerful open-source chess engine.

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