Monday, December 18, 2017

Riddle of the Week

Riddle of the Week: Knights and Knaves, 

Part 2

Difficulty level: Easy


MICHAEL STILLWELL

By Jay Bennett

Welcome back to a series of Knights and Knaves logic puzzles. These riddles take place on an island where there are two types of people, knights, who always tell the truth, and knaves, who always lie. You can see the first knights and knaves puzzle here.

Problem

On the island of knights and knaves, you are approached by two people. The first one points to the second and says, "he is a knave." The second one then says, "neither of us are knaves."

What are they actually?

Hint

On many of these puzzles, especially the harder ones going forward, it will be important to label everyone. So A says, "B is a knave." And B says, "neither A nor B are knaves."

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