perplexus.info :: Liars and Knights : Getting to the Knights' city

Getting to the Knights' city (Posted on 2002-04-26)

You are stranded in a land with only two big cities. Knightville is populated only by Knights, and Liarville - only by liars. Naturally, you wish to get to Knightville, where you hope to find help.

During your travels, you meet a resident of these parts, who must have come from one of the two cities, but you do not know which.

With one simple question, how do you find out what direction Knightville lies in?

Submitted by levik

Rating: 3.4444 (18 votes)

Solution: (Hide)

Ask the person to point out the direction of his home city. A Knight will point to Knightville, and so will a Liar, so you will know where to go even without knowing the nature of the person you are speaking to.

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
Puzzle Solution	K Sengupta	2022-09-06 00:54:00
Answer	Math Man	2014-03-01 13:00:33
Sol	Andre	2010-06-04 17:01:48
Far too easy!	Paddy	2006-02-08 06:19:44
havent looked... easy?	sean	2005-08-27 04:09:52
havnt looked at solution yet	Brandon	2005-05-16 14:07:13
mary.....could u pls tell us what u thought bout this problem's altrenative way	ravi	2004-09-30 11:47:10
Yeah!	Poliahu	2004-02-09 15:30:46
Possibly ...	Lawrence	2003-08-31 23:47:22
re: A puzzle about Drew	Lewis	2003-06-03 07:06:18
A puzzle about Drew	Tim Axoy	2003-04-20 03:27:02
Lying twice is not telling the truth.	Tim Axoy	2003-04-20 03:24:57
My strategy:How it works	Tim Axoy	2003-04-13 02:16:47
another way?	mary	2003-04-05 03:59:23
Pointing to Knightville	Tim Axoy	2003-03-18 01:49:27
re: =)	Nick Reed	2002-11-27 02:25:35
=)	Raveen	2002-11-26 04:17:31
Answer?	Raveen	2002-11-26 04:15:49

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