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Documentation](https://img.shields.io/badge/docs-stable-blue.svg)](https://BjarkeHautop.github.io/OrbisChessEngine.jl/stable)\n[![Development documentation](https://img.shields.io/badge/docs-dev-blue.svg)](https://BjarkeHautop.github.io/OrbisChessEngine.jl/dev)\n[![Test workflow status](https://github.com/BjarkeHautop/OrbisChessEngine.jl/actions/workflows/Test.yml/badge.svg?branch=main)](https://github.com/BjarkeHautop/OrbisChessEngine.jl/actions/workflows/Test.yml?query=branch%3Amain)\n[![Coverage](https://codecov.io/gh/BjarkeHautop/OrbisChessEngine.jl/branch/main/graph/badge.svg)](https://codecov.io/gh/BjarkeHautop/OrbisChessEngine.jl)\n[![Aqua](https://raw.githubusercontent.com/JuliaTesting/Aqua.jl/master/badge.svg)](https://github.com/JuliaTesting/Aqua.jl)\n[![SciML Code Style](https://img.shields.io/static/v1?label=code%20style\u0026message=SciML\u0026color=9558b2\u0026labelColor=389826)](https://github.com/SciML/SciMLStyle)\n[![BestieTemplate](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/JuliaBesties/BestieTemplate.jl/main/docs/src/assets/badge.json)](https://github.com/JuliaBesties/BestieTemplate.jl)\n\n\u003cp align=\"center\"\u003e\n  \u003cimg src=\"https://raw.githubusercontent.com/BjarkeHautop/OrbisChessEngine.jl/main/assets/logo.jpg\" alt=\"Orbis Logo\" width=\"200\"/\u003e\n\u003c/p\u003e\n\nA Julia package that implements chess from scratch alongside a chess engine, **Orbis**. It provides functionalities to represent the chessboard, validate moves, and evaluate positions.\nParticularly, *OrbisChessEngine* implements:\n\n- All chess rules\n- Bitboard representation\n- Legal move generation (tested with [perft](https://www.chessprogramming.org/Perft))\n- [FEN](https://en.wikipedia.org/wiki/Forsyth%E2%80%93Edwards_Notation) parsing\n- Opening book support\n- Minimax search with alpha–beta pruning, iterative deepening, quiescence search, transposition tables, null move pruning, and move ordering heuristics\n- Evaluation function based on piece-square tables\n\n## Installation\n\n`OrbisChessEngine` can be installed directly from the Julia package manager.\nIn the Julia REPL, press `]` to enter the Pkg mode, then run:\n\n```julia\npkg\u003e add OrbisChessEngine\n```\n\n## Example\n\nHere we show an example of how to let the engine play a \"1+1\" game against itself and plot it afterwards to view it.\n\n```julia\ngame = Game(\"1+1\")\nplots = []\nwhile game_status(game.board) == :ongoing\n    engine_move!(game)\n    push!(plots, display(game))\nend\n\nfor i in eachindex(plots)\n    sleep(0.5)\n    display(plots[i])\nend\n```\n\n## Resources\n\nView the documentation at [https://BjarkeHautop.github.io/OrbisChessEngine.jl/dev/](https://BjarkeHautop.github.io/OrbisChessEngine.jl/dev/).\n\nVisit chess programming wiki for useful articles on chess engine programming: [https://www.chessprogramming.org/Main_Page](https://www.chessprogramming.org/Main_Page).\n\n## TODO\n\n- Improve search performance by minimizing allocations\n\n- Improve evaluation function (e.g. add pawn structure, king safety, trapped pieces, etc.)\n\n- Add support for multiple threads in search (e.g. lazy SMP)\n\n- Implement (some of) [UCI](https://en.wikipedia.org/wiki/Universal_Chess_Interface) protocol\n\n- Make executable with [PackageCompiler.jl](https://julialang.github.io/PackageCompiler.jl/dev/)\n\n- Add magic bitboards for faster move generation (added for bishops, but not yet used. Minimal performance improvement observed - see [Benchmarks](https://bjarkehautop.github.io/OrbisChessEngine.jl/dev/40-benchmarks/) for details.)\n\n- Implement into Lichess bot (see \u003chttps://github.com/lichess-bot-devs/lichess-bot\u003e)\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fbjarkehautop%2Forbischessengine.jl","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fbjarkehautop%2Forbischessengine.jl","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fbjarkehautop%2Forbischessengine.jl/lists"}