tonyOreglia / glee

Tony's golang chess engine

Glee

Play against this engine at tonycodes.com/chess

Frontent Implemented in Reactjs

It allows playing as white or black. Reverting to any previous position in the game:

It also allows setting an arbitrary position using Forsyth Edwards Notation:

Overview

Glee is a chess engine written in Golang. Glee adheres to the Universal Chess Interface (UCI) protocol over a websocket connection on port 8081. To connect with Glee from a websocket client, connect at /uci.

Glee is a fully working chess engine, but is being continually improved. Progress can be tracked on the project page here

Core Technical Concepts/Inspiration

Glee was originally undertaken as a method of learning the ins and outs of Golang. As a user, you may utilize specific packages for use in your own engine, use the code to learn about chess programming, use it as a backend to test your UCI frontend, or simply play the engine's command line interface.

This engine is built using bitboard representation of the position. That is, a series of 64-bit unsigned integers are used to represent a given position and efficiently calculate legal moves via bitwise operations. An alpha-beta search algorithm is used to trim the potential moves tree. A basic evaluation is used to evaluate a given position, based on a pawn value of +100 for white.

Getting Started/Requirements/Prerequisites/Dependencies

If you want to use the engine for any reason feel free to fork, download or clone the repo.

To run the Websocket Server, run

$ go run cmd/glee/main.go 

Note that the server will default to running in localhost on port 8081, if it should be run on a different IP Address you can override the value via the environment varialbe ADDR before starting the server. For example,

$ export ADDR=157.230.180.254:8080

Tests

Run

go test ./...

Contributing

Feel free to open a PR, I would be stoked.

TODO

See project here

Contact

• [e-mail]

Setting this up as a backend webscocket for my personal website

1. Run it on the same machine that the website is running on Typically website will be behind nginx.
2. Nginx should expect websocket traffic from the website on 8443 and reroute to this backend unencyrpted at 127.0.0.1:8080
3. To run this engine on port 8080 run :

$ export ADDR=127.0.0.1:8080

1. Then run

$ go run cmd/glee/main.go --serve

Setting this up as a backend webscocket for my personal website

Make sure to unblock the websocket port; i.e:

$ sudo ufw allow 8443/tcp

Run

$ go run cmd/glee/main.go

Type 'help' for help menu.

To set up with systemctl

See /config/systemctl/README.md