Back to Logic Problems
Two Guards and Two Doors
This Easy puzzle in the “logic” category rewards careful reading and step-by-step reasoning. Use the hint if you are stuck, then compare your approach with the explained answer.
You are trapped in a room with 2 doors.
One door leads to freedom, and the other leads to certain doom.
There are also 2 guards:
- One guard always tells the truth
- The other always lies
You may ask one yes-or-no or one normal question to one guard.
What should you ask to guarantee you choose the correct door?
Preparing…