Logic Grid Puzzles

A logic grid puzzle gives you a set of clues about several people or things, each with a handful of attributes — who owns what, who did which job, who arrived when — and asks you to work out the complete matching. Unlike a zebra puzzle, there's no row or sequence to place anyone in: you're matching categories to each other, not lining anyone up.

Every logic grid puzzle here runs through a constraint solver before it's published. The solver checks every possible matching and confirms exactly one of them satisfies all the clues — the puzzle only goes live once that's proven, not assumed. That's what the ∎ verified badge on each card means.