# Who is the knight, who the knave, and who the spy? {Use your Brain. Don't Google it. The solution is very interesting}

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There are three persons (Alex, Brook and Cody). One of whom is a knight, one is a knave and one is a spy.

The knight always tells the truth, the knave always lies and the spy can either lie or tell the truth.

Alex says: "Cody is a knave."
Brook says: "Alex is a knight."
Cody says: "I am the spy."

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

posted Mar 18, 2014

Brook is not the knight (Because Knight always tells the truth and if he is a Knight, He will not say that Alex is a knight). Accordingly it proves Brook is not a knight.

It came up with logic now. Not Assumption.

In similar way Cody is not the knight, since his statement would then be a lie.

Hence it proves that out of three Alex is a Knight and Knight always tells the truth So Alex statement is 'Cody is a Knave'.

Therefore Alex is the knight hence Cody is the knave and Brook is the spy.

alex is knight brook is spy and cody is knave

Similar Puzzles

There are two people, A and B, each of whom is either a knight or a knave.
A says, "At least one of us is a knave."
What are A and B?

Details and Assumptions:
A knight always tells the truth.
A knave always lies.

Tim: "I am a joker but Tom is a knave"
Tom: "I am not a joker but Tim is a knight"
Jim: "When Tim and I are in the same room, Tim always lies. But when Tom and I are in the same room, he tells the truth"

Knights tell the truth, knaves lie, jokers just mimic anyone who are in the same room with them
There is only 1 knight, 1 knave and 1 joker
Tim and Tom were in the same room while Jim was outside.

Who was the knight?

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