Hard
Logic
21 XP

The Two Guards Problem

12,784 solved 82% solve rate 18% fail rate
Two doors: one to freedom, one to death. One guard always lies, one always tells truth. You ask one question. What do you ask?
Only 82% solve this correctly
12,784 attempts
Earn +21 XP for solving
Quick Answer & Explanation
Ask either guard: What

The answer to this riddle is Ask either guard: What. Difficulty: Hard · Solved by 12,784 puzzle lovers.

Ask either guard: What would the other guard say is the freedom door? Choose the opposite.
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