A pure Rust chess engine
A pure Rust chess engine
(pronounced "Hekseh")
[![Travis Status][travis-badge]][travis] [![AppVeyor Status][appv-badge]][appv]  ## What is Hexe? Hexe is an open-source chess engine written in Rust. It is written primarily as a library, with an executable that directly utilizes that library. This project is split into two packages (crates): - **[ lib + bin ]** [`hexe`]: The chess engine itself - Specialized for Hexe's use cases - Contains all code used to run the executable - **[ lib ]** [`hexe_core`]: The chess engine's building blocks - Supports `no_std` builds - May be used by other chess programs for ease of code reuse ## Why "Hexe"? 1. "Hexe" is German for witch. It denotes the use of magic bitboards within this project. 2. It refers to [Clarke's Third Law][clarke-laws]: "Any sufficiently advanced technology is indistinguishable from magic." 3. If she weighs the same as a duck... she's made of wood. And therefore... ## Features The goal of this project is to have the following features: ### [`hexe`] - [x] UCI compatibility - [ ] Aspiration Windows - [ ] Iterative Deepening - [ ] Killer Moves - [ ] Minimax with Alpha-Beta pruning - [ ] Null Move Heuristic - [ ] Transposition Tables - [ ] Work-stealing multi-threaded search ### [`hexe_core`] - [x] Bitboard and square-to-piece map chess board representations - [x] Lookup tables and magic Bitboards without runtime initialization ### Cross-Platform Compatibility Hexe is written to be available for the main platforms that Rust compiles to. `hexe` and `hexe_core` are both automatically tested—separately—against all [Tier 1 platforms][tier1]. As of this writing, they are: | Platform | Version | Bits | | :--------- | :----------- | :---- | | macOS | 10.7+, Lion+ | 32/64 | | MinGw/MSVC | Windows 7+ | 32/64 | | Linux | 2.6.18+ | 32/64 | `hexe_core` is designed to not require [the Rust standard library][std]. Because of this, it is compatible with all platforms that stable Rust compiles to. ### Cross-Language Compatibility Hexe wrappers are currently available in the following languages: - Swift - [Hexe.swift](https://github.com/hexe-rs/Hexe.swift/) ## License Hexe is licensed under either of - [Apache License (Version 2.0)][license-apache] - [MIT License][license-mit] at your choosing. [`hexe`]: https://docs.rs/hexe [`hexe_core`]: https://docs.rs/hexe_core [travis]: https://travis-ci.org/hexe-rs/Hexe [travis-badge]: https://travis-ci.org/hexe-rs/Hexe.svg?branch=master [appv]: https://ci.appveyor.com/project/nvzqz/hexe [appv-badge]: https://ci.appveyor.com/api/projects/status/github/hexe-rs/Hexe?svg=true [license-apache]: https://github.com/hexe-rs/Hexe/blob/master/LICENSE-APACHE [license-mit]: https://github.com/hexe-rs/Hexe/blob/master/LICENSE-MIT [std]: https://doc.rust-lang.org/std/ [tier1]: https://forge.rust-lang.org/platform-support.html#tier-1 [clarke-laws]: https://en.wikipedia.org/wiki/Clarke%27s_three_laws