Chess-engine

A fully compliant, playable chess engine written in Lua and rendered with the Love2D game framework forked from https://github.com/Azzla/chess-engine. Features a multi-threaded AI opponent with alpha-beta + quiescence search algorithms.

Completed Goals

• Bug-free legal move generation: Passes all Perfts up to a depth of 5-ply from this testing suite.
• Optimized move generation: Various speed increases have been achieved via table-lookups, init-time move info storage, array indexing over looping, removing table.insert, etc. More optimization is always possible but its good enough for the time being.
• Playable AI opponent: Opponent can find good moves in most positions and generally avoids bad moves. I've noticed a bug where the search thread hangs and it never returns the best move, but it seems to occur rarely.

I'm not the original developer, I forked the project and did a few small tweaks like zoom out the screen and tweaking the screen resolution to make it fit on mobiles.

I may add some more mobile features in the future.

This is my second chess project forked, the other one can be found here: https://openrepos.net/content/glitchapp/love-chessboard

Difference between the two chess games:

Chess-engine:

- Features A.I. oponent (you can only play against cpu)

- Clock

- Smooth animations

love-chessboard:

- No A.I. opponent (you can only play against another human player)

- 4 sets available: "fritz", "sharm", "smirf" and "warlord"

- Portrait and landscape mode

Choose whatever chess you prefer and enjoy!

v0.2 adds:

- New set of pieces: "sharm"

- Normal maps and global illumination

This new version pushes the gpu and may not perform well on old devices, if you experience bad performance please use v0.1

v0.3 adds: Deprecated lua functions updated with their newer counterparts. 

This build works on sailfish os 5.0 (tampella). It problably won't work on older sailfish versions: some of the new lua functions do not work on older lua, if the game crashes on older sailfish please use version 0.2 instead.