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Murder by Logic (Posted on 2004-03-05) Difficulty: 3 of 5
Professor Z was killed by one of his four students, who was helped by another of the four. His students declared:

A: If B is guilty of something, then C must be innocent.
B: If A is innocent, then C must be guilty.
C: If B was the killer, then D must have had nothing to do with the crime.
D: I am innocent.

As everybody should know, guilty parties always lie, and innocent people always tell the truth. Who killed the professor, and who was his accomplice?

See The Solution Submitted by Federico Kereki    
Rating: 3.6667 (12 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionPuzzle SolutionK Sengupta2008-05-15 06:17:09
answerK Sengupta2007-11-10 04:44:12
re: Help me out...Penny2004-06-25 16:05:08
re: another solution I think...Tristan2004-06-24 18:20:27
another solution I think...mic2004-06-24 17:41:06
Help me out...Jeremy Trenary2004-05-28 19:44:56
alternate solutionDaymiris Gell2004-05-17 20:30:14
Think there's something wrong..paul priest2004-05-07 09:32:59
SolutionSolution!Galendir2004-03-21 16:23:57
re(3): full solutionMatthew Pianalto2004-03-10 03:49:37
re(2): full solutionSilverKnight2004-03-10 03:15:52
re: full solutionMatthew Pianalto2004-03-09 21:18:16
re(2): solutionPenny2004-03-09 16:39:43
Some Thoughtsre: solutione.g.2004-03-09 14:48:09
Solutionsolutionpaul2004-03-08 21:32:45
the answer?Sunwoo Lee2004-03-08 20:28:45
SolutionSolutione.g.2004-03-08 14:00:00
Yes it does, DebPenny2004-03-08 06:00:16
Does solution have to be more detailed then this?Deb2004-03-07 19:47:19
re: if d is not the killer...Sam2004-03-06 13:27:11
if d is not the killer...Chandrakant2004-03-06 11:00:17
SolutionSolutionPenny2004-03-05 16:05:02
Solutionfull solutionSilverKnight2004-03-05 15:17:48
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