Brain Puzzle Follow Up
>> 26 January 2009
A follow up question from our Brain Puzzle.
Imagine that you are on the island, where everyone is either a knight or a knave. Knights always tell the truth, and Knaves always lie. As it turns out, all the Knights live in the same town, Knightville. Likewise, all the Knaves live in the same town, Knaveboro. You are trying to get to Knightville. You come to a fork in the road; one way leads to Knightville, the other road leads to Knaveboro, however, there are no signs. A traveler approaches you. What question shoud you ask him to learn the way to Knightville?
Only one question! Post your response in the comments section.
3 comments:
ask: Do you have a map I can borrow?
"Which way leads to your home?"
If he is a knight, he will tell the truth, and point toward Knightville.
If he is a knave, he will tell a lie, and point away from Knaveboro (towards Knightville).
Good one John! I spent a few minutes trying to work it out in my head, but gave up eventually.
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