2-player chess

Description

I'm currently working on a chess engine. (well, actually for the past year; this is the fourth iteration xD) I finally found the bug that held me from making progress and demotivated me to work on it for the past 6 months, and from now on it *should* be relatively straight forward. I'm pretty confident all the bugs are gone now, but if you find something that shouldn't happen, please let me know (copy-paste the raw PGN by clicking export if it is something that happened in a specific game). If you have any questions about the engine, that annoying bug or the development, feel free to ask me! Although this is still a WIP, I put a lot of effort in it and I'm determined to finish it. Thanks a lot to @ArnoHu and @Samueldora for helping me out when I had questions about chess engines. I also learned a lot by going through the code of their engines. Another great resource is chessprogramming.org

Instructions

2-player chess Instructions: - Click the pieces to move them. - Press S to toggle the board switching sides after each move. For debugging: - Press import button to import an FEN position - Press export button to export the current FEN or PGN - Press L to toggle log - Press C to clear log - Press P to run perft (performance test) on a given depth. In turbowarp (https://turbowarp.org/552659605/fullscreen?turbo&stuck) depth 5 takes about 30 seconds.