Puzzles
Five houses, five nationalities, one puzzle wrongly credited to Einstein
Five houses in a row, each a different colour, owned by people of five nationalities, who each drink a different beverage, smoke a different brand and keep a different pet. Fifteen clues are given. Using only logic, work out who owns the zebra and who drinks water.
Reveal the answer
There's exactly one valid solution: the Norwegian owns the zebra, and the German drinks water. First published in the magazine Life International on 17 December 1962 as 'The Zebra Puzzle', with no attribution to Einstein: the popular claim that Einstein wrote it, or that only 2% of people can solve it, has no documented source and appears to be internet folklore.
— Life International magazine, Zebra Puzzle — 17 December 1962