# MihanSolo

[![GitHub stars](https://img.shields.io/github/stars/montypylons/mihansolo_bot?style=social)](https://github.com/montypylons/mihansolo_bot)
[![Lichess](https://img.shields.io/badge/Play%20on-Lichess-green?logo=lichess)](https://lichess.org/@/MihanSolo)

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## About MihanSolo

_About the name: My friend made it up as a parody on my name and the Star Wars character Han Solo_

**MihanSolo** is my first chess engine (written in C++); it uses an HCE (hand-crafted evaluation) and Negamax search with alpha/beta and quiescence. I can only add new features occasionally now that school starts soon :(, but its ok as it is. Around 1700 bullet and blitz on [Lichess](https://lichess.org/). Uses Disservin's chess-lib for movegen, checkmate detection, all the nitty-gritty details. 

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## Play 

- [Play @ Lichess](https://lichess.org/@/MihanSolo)
- Or Use one of the releases, most contain prebuilt binaries and source code

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## Features

### [Evaluation](https://www.chessprogramming.org/Evaluation)
- Piece-square tables
- Material eval
- Middlegame/endgame eval changes (currently only for kings and pawns)
### [Search](https://www.chessprogramming.org/Search)
- Quiescence search
- Delta pruning
- Alpha/beta pruning
- Stand pat pruning
- Transposition table (currently hard-set at 2^23 entries)
- Evaluation hash table (also hard coded at 2^23 entries)
### [UCI (Universal Chess Interface)](https://www.chessprogramming.org/UCI)
- Partial UCI support, just enough to get it working on Lichess. :D
  

## Acknowledgements
- Disservin's [chess-lib](https://github.com/Disservin/chess-library)
- [Cutechess](https://github.com/cutechess/cutechess)
- [Hack Club](https://hackclub.com) - For giving me the motivation to build this with their excellent [Summer Of Making](https://summer.hackclub.com) program
- [Chess Programming Wiki](https://www.chessprogramming.org/Main_Page)
- [Engine Programming Discord](https://discord.com/invite/F6W6mMsTGN) can be a little harsh at times but its all in good faith
- [Stockfish Discord](https://discord.com/invite/GWDRS3kU6R)
- [Lichess](https://lichess.org)