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Rickety Bridge (Posted on 2004-03-26) Difficulty: 2 of 5
Lost in the woods, you finally happen upon a rickety old bridge across a deep ravine. The ravine is too steep to go down and climb back up. You need to know if the bridge is safe. As 'luck' would have it, you recognize that on the other side of the bridge is that dreadful town, "Knight-and-Liarville". Everyone who lives there is a knight (who always tells the truth) or a liar (who always lies). You are tired and you've been lost in Knight-and-Liarville before. You see three men on the other side of the bridge.

You shout out: "Are you a knight?"

The first man says something, but you can't hear what he said.

The second man shouts, "He said he was a knight."

The third man shouts, "No, he didn't. He said he was a liar."

Which man do you ask to find out whether or not the bridge is safe?

See The Solution Submitted by Popstar Dave    
Rating: 3.1176 (17 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionWho?Math Man2014-07-20 10:29:03
SolAndre2010-06-01 19:09:46
SolutionPuzzle Solution With ExplanationK Sengupta2008-03-12 06:35:00
AnswerK Sengupta2008-03-12 06:33:48
No SubjectTerence2005-10-08 03:42:48
I saw this one in a logic book oncePhilip2005-04-04 19:21:55
PuzzleMarlayna2004-09-27 14:16:49
Some Thoughtsroundabout, but valid solutionGordon2004-05-06 17:11:05
number 2ra2004-04-05 09:54:55
number 2ra2004-04-05 09:53:36
No SubjectBatfink2004-04-04 20:08:01
Solution?Mark Rees2004-03-29 10:19:23
quick answerhunter2004-03-29 08:15:29
re(2): maybe...logischer Verstand2004-03-27 10:01:51
penny and Penny are two different peoplePenny2004-03-27 03:36:39
Solutionsteve's solutionSteve Royer2004-03-27 01:15:20
No Subjectpenny2004-03-27 00:31:57
SolutionSolutionTimothy2004-03-26 19:48:43
re(2): Only 1 is safe to ask...Brian Wainscott2004-03-26 19:22:37
SolutionThere can be only oneJuggler2004-03-26 19:04:53
re: Only 1 is safe to ask...Penny2004-03-26 17:16:06
re: maybe...Tristan2004-03-26 17:09:49
Solutionmaybe...logischer Verstand2004-03-26 16:42:44
re(2): Only 1 is safe to ask...Charlie2004-03-26 15:55:58
re(2): Only 1 is safe to ask...Brian Wainscott2004-03-26 15:54:57
my previous thing is wrongyo2004-03-26 15:27:01
re: Only 1 is safe to ask...yo2004-03-26 15:21:02
Yet another Good Pointnikki2004-03-26 15:17:58
SolutionOnly 1 is safe to ask...Brian Wainscott2004-03-26 14:51:45
SolutionDouble solutione.g.2004-03-26 11:14:32
Some ThoughtsGood pointnikki2004-03-26 10:56:58
I think this is the answer... :-(Penny2004-03-26 09:48:08
SolutionSolutionnikki2004-03-26 09:43:44
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