Three boxes labeled X, Y, and Z hold a hidden treasure in one of them. Box X states: 'The treasure is in Box Y.' Box Y states: 'The treasure is in Box Y.' Box Z states: 'The treasure is not in Box X.' If exactly one label is true, which box contains the treasure?
Box Z
If the treasure is in Box Z: Box X's statement is False, Box Y's statement is False, and Box Z's statement ('not in Box X') is True. This results in exactly one true label.
About this riddle
Logic riddles give you a few facts and ask what must be true. List what you know, cross out what cannot be, and see what is left.
Difficulty: Hard. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
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