Random observation: the exe size of this chess game is **35,828 bytes** (with nim --d:release --opt:size and then upx -9qqq --ultra-brute) (not counting the UI dynamic libraries).
This of course is [no record](https://en.chessbase.com/post/the-world-s-smallest-chess-engines), but still pretty impressive, given the relative code readability, UX quality, and play strength.
