Solutionless Riddle in the Cloudpeaks?

Abel

Contains spoilers!

So, I was travelling to the Cloudpeaks and reached a cave. Two men were imprisoned in trapped cages.
If opened one of the doors free them both, the other kills them both. Now, they know which one is right but will only answer one question for me to find out. And one of them will be lying.
Basically, I need to ask a question whose answer will both determine whether the answerer is lying (#1) and his opinion about the right door (#2).
But, I only get to choose questions where one or the other point is answered:
- Is your cage the one that's trapped? #2
- Is the other cage the one that's trapped? #2
- Which cage will the other tell me is safe to open? #2
- If I ask the other prisoner, will he tell me the truth? #1
- Which of these cages is not trapped? #2
- Are you lying to me? #1
What kind of fool does this game take me for? These suggested questions are all the same!

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Abel

Are you telling me you had a lucky roll on a d2 dice?

Montresor_SP

You don't need to know whether you are speaking to the liar or the truth-teller; only which door is safe to open. So ask this question: Which cage will the other tell me is safe to open?

If you ask the liar, he will lie to you and say that the other guy (the truth-teller) will point you to the trapped door.

If you ask the truth-teller, he will tell you the truth that the other guy (the liar) will point you to the trapped door.

In both cases they will point you to the trapped door, so you just open the other one. :-)

Abel

@Montresor_SP Good thinking there! Lying about the truth or telling the truth about the lie give the same outcome! Interesting! I was the fool after all

Jared4242

http://www.youtube.com/watch?v=59ypUs6WzFM

CaptRory

http://tvtropes.org/pmwiki/pmwiki.php/Main/KnightsAndKnaves