A clever turkey decided to hide in one of three crates (Red, Blue, or Green) to avoid becoming the main course. On the Red crate, a sign reads: 'The turkey is not here.' On the Blue crate, a sign reads: 'The turkey is in the Red crate.' On the Green crate, a sign reads: 'The turkey is not in the Green crate.' Exactly one sign is true. Which crate is the turkey hiding in?
The Red crate
Test each crate: If the turkey is in Red, Red's sign is false, Blue's sign is false, and Green's sign is true (since it's not in Green). That gives exactly one true sign. If it's in Blue, Red is true and Blue is true (two trues, invalid). If it's in Green, Red is true, Blue is false, and Green is false (one true, but wait—if it's in Green, Green's sign 'not in Green' is false, and Red's sign 'not here' is true. Let's re-verify Green: if in Green, Red is true, Blue is false, Green is false. But if it's in Red, Red is false, Blue is false, Green is true. Exactly one true. Wait, let's check Green again: Red says 'not here' -> true. Blue says 'in Red' -> false. Green says 'not in Green' -> false. That's two trues (Red and Blue? No, Red is true, Green is false. Total one true). Let's re-evaluate Green: if turkey in Green, Red sign 'not here' is True. Blue sign 'in Red' is False. Green sign 'not in Green' is False. That's one true. Wait! Let's test Red again: if turkey in Red, Red sign 'not here' is False. Blue sign 'in Red' is True. Green sign 'not in Green' is True. That's two trues (Blue and Green). Let's re-read carefully: If turkey in Green, Red is True, Blue is False, Green is False. Total 1 true. If turkey in Red, Red is False, Blue is True, Green is True. Total 2 trues. If turkey in Blue, Red is True, Blue is False, Green is True. Total 2 trues. Therefore, the turkey must be in the Green crate? Wait, let's check Green: Red says 'not here' (True because it's in Green). Blue says 'in Red' (False). Green says 'not in Green' (False because it IS in Green). Total true signs = 1 (only Red). Let's check Red: Red says 'not here' (False). Blue says 'in Red' (True). Green says 'not in Green' (True because it's in Red). Total true signs = 2. So the turkey is in the Green crate.
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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