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ChessKitEngine 0.5.0

Released Tuesday, September 10, 2024.

Engine Upgrades

Improvements

  • Engine.type is now exposed publicly.

ChessKitEngine 0.4.1

Released Monday, April 22, 2024.

Bug Fixes

  • Fix issue where engine responses containing a newline character would not be parsed correctly.

ChessKitEngine 0.4.0

Released Monday, April 22, 2024.

Engine Upgrades

  • Update to Stockfish 16.1.
    • ⚠️ Stockfish now requires EvalFile and EvalFileSmall options to be set after launch, with a path to the *.nnue files provided.
    • Currently chesskit-engine assumes nn-baff1ede1f90.nnue, nn-b1a57edbea57.nnue are available in your app's Bundle.main.
    • Click the file names in the previous line to access the download pages.
    • Any other files can be added via .setoption(id:value:) engine commands.
  • Update to LeelaChessZero 0.30.
    • ⚠️ Lc0 requires WeightsFile options to be set after launch, with a path to a neural network file provided.
    • Currently chesskit-engine assumes 192x15_network is available in your app's Bundle.main.
    • Network files can be downloaded from lczero.org.
    • Any other files can be added via .setoption(id:value:) engine commands.
    • Currently there are some performance issues using lc0 in an app; this is being investigated but any contributions (via PRs or issues) are appreciated.

Improvements

  • Engine.start() now takes a completion handler.
    • This is called once the engine has finished initializing.
    • Engine commands (i.e. setting options or requesting evaluations) should not be sent until this completion handler is called.
  • EngineMessenger now sends commands to the engines via stdin, see Issue #11.
    • This will allow for much simpler upgrades to existing engines, as well as the inclusion of new engines in the future.
    • Special thanks @dehlen.

ChessKitEngine 0.3.0

Released Wednesday, March 27, 2024.

Improvements

  • Add background engine processing for better performance.
  • Remove neural network resource files for greatly reduced package size.
    • These can be added manually by bundling the desired files and setting the appropriate engine to use them (see Resources directory).
    • For Stockfish 15.1 (nn-1337b1adec5b.nnue): 
      engine.send(command: .setoption(id: "EvalFile", value: evalFileURL))
engine.send(command: .setoption(id: "Use NNUE", value: "true"))
    • For LeelaChessZero 0.29 (192x15_network): 
      engine.send(command: .setoption(id: "WeightsFile", value: weightsFileURL))

ChessKitEngine 0.2.2

Released Thursday, May 18, 2023.

  • Replaced submodule URLs with HTTPS instead of SSH

ChessKitEngine 0.2.1

Released Friday, April 28, 2023.

Improvements

  • Removed unsafe flags from Package.swift

ChessKitEngine 0.2.0

Released Wednesday, April 26, 2023.

New Features

Improvements

  • Engine initializer no longer has a default engineType (previously .stockfish)
    • Type must be specified using Engine(type: <engine type>)
  • Add Stockfish EvalFile as Swift package resource

ChessKitEngine 0.1.3

Released Saturday, April 15, 2023.

Improvements

  • Add default nil value for value parameter in EngineCommand.setoption(id:value:)

Bug Fixes

  • Fix loggingEnabled default value to match documentation
  • Fix EngineCommand.PositionString(rawValue:) when passing a FEN string

Technical Improvements

  • Simplify internal Obj-C and C++ targets
  • Increase test coverage

ChessKitEngine 0.1.2

Released Friday, April 14, 2023.

  • Hide internal Obj-C and C++ targets
    • Created separate Swift and Obj-C EngineType enums
    • Package user should only need to import ChessKitEngine now

ChessKitEngine 0.1.1

Released Friday, April 14, 2023.

  • Fix build issue related to missing ChessKitEngine_Cxx target

ChessKitEngine 0.1.0

Released Friday, April 14, 2023.

  • Initial release