Zebra Puzzles
A zebra puzzle is the classic "Einstein's Riddle" format: a row of houses, seats or positions, each with several attributes, and a list of clues that pin down who or what belongs where. The positional clues (first house, next to, two doors down) are what separate a zebra puzzle from a logic grid: here, order matters.
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Every zebra puzzle here runs through a constraint solver before publication. It checks every possible arrangement of the row and confirms that exactly one satisfies every clue, the same proof-before-publish standard as the logic grids and knights and knaves, shown as the ∎ mark on each card.