If anyone's interested in this sort of puzzle, the game Noita is filled with them. A large chunk of the code's in lua and you can inspect it!
The final puzzle for the game is a cryptographic puzzle that's been unsolved for five years now. Folk have done just about everything imaginable to solve the puzzle.
The final puzzle for the game is a cryptographic puzzle that's been unsolved for five years now. Folk have done just about everything imaginable to solve the puzzle.