An adventurer found a locked treasure chest in a dungeon. He tracked down three brothers (each either a Liar or a Knight) one of whom has the key to open the chest.

Each made a statement:

A: I have the key to the chest.

B: I don't have the key to the chest.

C: B Doesn't have the key.

The adventurer knows that at least one of the three is a Liar, and at least one - a Knight. Who has the key?

If A had the key,then all three would be knights.
If B had the key,then all three would be liars.
Therefore,C has the key,A is a liar,B is a knight,and C is a knight.

Posted by Tim Axoy on 2003-03-22 02:33:36