Riddle of the Week #49: Knights and Knaves, Part 7

Difficulty level: Moderate

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Michael Stillwell

Welcome back to Seniorhelpline' Riddle of Week. We return to a mysterious island with knights, who always tell the truth, knaves, who always lie, and spies, who can be honest or dishonest at will.

Problem

On the island of knights and knaves and spies, you are approached by three men. One wears blue, one wears red, and one wears green. You know that one is a knight, one is a knave, and one is a spy.

The man in blue says, "I am not a spy."

The man in red says, "I am a knave."

The man in green says, "If you asked me, I would say that the man in red is the spy."

What are the true identities of these three men?

Hint

If the man in red is in fact the spy, could the man in green be a knight? What about a knave?

Solution

Once you identify these men of dubious honesty, check the solution here.

*See all of our riddles here.

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