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Logic Gates

Knights and Knaves Starter

Have a go at this riddle – can you solve it?

You are stranded on an Island when you bump in to 3 people. Of the three people (Alice, Bill, Charlie):

One is a knight
One is a knave
One is a spy
On this island:

Knights always tell the truth
Knaves always lie
Spies can do either

Alice says: “Charlie is a knave.“

Bill says: “Alice is a knight.”

Charlie says: “I am the spy.“

Who is the knight, who the knave, and who the spy?


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