just a quick example from the backtracking section: "Here's the dirty secret of WFC: it fails. A lot. You make a series of random choices, propagate constraint

just a quick example from the backtracking section: "Here's the dirty secret of WFC: it fails. A lot. You make a series of random choices, propagate constraints, and eventually back yourself into a corner where some cell has zero valid options left. Congratulations, the puzzle is unsolvable."