Monday, July 25, 2016

Dense Riddle - Three Doors

Here's a riddle I've written. Can you solve it? It's pretty tough, but believe me, it is solvable. :)


There are three doors and three guards

One door leads to heaven.
Another door plunges you to hell, if you open it.
The third door doesn't lead anywhere.

One guard knows which door leads where and always tells the truth about it.
Another guard knows which door leads where and always lies about it.
The third guard doesn't know which door leads where, but always tells the truth.
All of the guards know what the other guards would say.
None of the guards know what the other guards know or whether they speak the truth.

You do not know the order of the guards nor the order of the doors.

You may ask one question from one of the guards. The guard will then answer "yes" or "no", or if truly not knowing the answer or faced with an inherently contradictory question that has no logical answer, he will just stay silent.

How do you find your way to heaven?

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