Just shipped a massive update to Python Chess! I built a fully playable 2D GUI from scratch using tkinter with custom piece sprites and strict movement validation—no more pieces teleporting across the board. The coolest part? I integrated the powerful open-source Stockfish engine (Stockfish GitHub) into the background via a UCI subprocess bridge, so you can actually play against a real chess AI. Bundling it all into a standalone macOS app with PyInstaller was a headache with pathing quirks, but we cracked it. Next up, I’m thinking about building a custom evaluation bot from scratch!