Where's the Exit? (Posted on 2003-08-18)

	Submitted by Lewis
Rating: 2.9286 (14 votes)
Solution:	(Hide)
If A was the knight and B was the liar, then it was not door E or B, because of the information keeper A told you. It is not A because of Keeper B's second sentence. Because Keeper B's a liar, his first statement means he might say C if you asked which door. Therefore, because he is a liar, it isn't C. So, if A is the knight then it is door D. If Keeper B was the knight and Keeper A the liar, then we know it is neither door C nor A, because of what Keeper B said. It is also not door B because of Keeper A's second sentence. Similarly to Keeper B's fist sentence, if Keeper A was the liar then his first sentence means it was not E. Therefore, it is also D. Although you cannot tell which is the liar and which is the knight, you do know that door D is the correct door.

	Subject	Author	Date
	Puzzle Answer	K Sengupta	2022-05-15 23:18:57
	Sol	Andre	2010-06-02 18:23:21
	Elimination	CharleyA.	2007-01-26 02:37:19
	No Subject	Brandon	2005-05-16 14:00:09
	a,b,d!	Kris Norris	2004-09-27 14:17:58
	A bit obvious I'm afraid	Dacre	2003-08-29 12:06:08
	liars and knights	duckpotter	2003-08-21 18:47:45
	solution	FatBoy	2003-08-21 13:04:49
	Solution	Jonathan Shaw	2003-08-19 02:58:47
	solution	Hans	2003-08-18 17:07:49