The Stairway to Heaven

The Puzzle

Two stairways lead to Heaven or Hell. Three guards stand before them: an Angel (truthful), a Devil (lies), and a Human (unpredictable). You don't know who is who. You can ask two yes/no questions total (to any guards). Each guard knows the others' identities. How do you find Heaven's stairway?

Choose your answer:

Ask each guard if they're the Angel

Use meta-questions to identify the Human first

Ask about the stairways directly

It's impossible with just two questions

Need a Hint?

Solution

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