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The Hardest Logic Puzzle Ever

Gizmodo
The Hardest Logic Puzzle Ever

They say it’s the hardest logic puzzle ever: «Three gods A, B, and C are called, in some order, True, False, and Random. True always speaks truly, False always speaks falsely, but whether Random speaks truly or falsely is a completely random matter. Your task is to determine the identities of A, B, and C by asking three yes-no questions; each question must be put to exactly one god. The gods understand English, but will answer all questions in their own language in which the words for ‘yes’ and ‘no’ are ‘da’ and ‘ja’, in some order. You do not know which word means which.»


From Weekly Filet #99, in January 2013.

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