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I'm a knight! Really! (Posted on 2004-12-07) Difficulty: 4 of 5
When I visited the Knights and Liars Archipelago, one island I visited was called Liontruth. The tourism had a great influence on the island, so much that the knaves on the island spoke differently from most knaves. They didn't have to follow an alternating pattern, but could tell truths (like knights always do) and lie (like liars always do) in whatever pattern they wanted. The three types of inhabitants are indistinguishable by eye.

If a tourist thinks the local knaves alternate truths and lies how can a knave convince the tourist that he is not a knave?

How can a knave from this island prove himself in one statement without revealing whether he is lying or not?

How can a knight prove himself in one statement?

How can a liar prove himself in one statement?

What single statement can be said by either a knight or liar but not a knave?

See The Solution Submitted by Tristan    
Rating: 4.3000 (10 votes)

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re: Solution Comment 18 of 18 |
(In reply to Solution by Zipp Dementia)

Whoops, this is the solution for the next problem. Speaking of liars and knights, however, everyone's heard the famous one about the truth telling village and the liar village, right?

"You're on an island with two villages, one of only truth tellers, one of liars. You come to a fork in the road where sits a native. You only get to ask one question. What question can you ask that will get him to tell you where the truth tellers village is?"

Well, there's a second solution I came up with. Anyone else know it?
  Posted by Zipp Dementia on 2005-02-11 03:17:40

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