Esther is engaged. Her fiancé is either Arthur, Barton, Claude, or Dexter.

1. Each of the four men and Esther is a knight or a liar.
2. Arthur says: "Exactly one of us four men is a knight."
3. Barton says: "Exactly one of us four men is a liar."
4. Claude says: "Arthur or Barton is Esther’s fiancé."
5. Esther says: "My fiancé and I are either both knights, or both of us are liars."

Who is Esther's fiancé?

1.Esther tells the truth. Not so does her fiance, . THERE are 2 liars:  Art & Bar, Claude and DEXTER tell the truth. One of them is her fiance.

2. Only Arthur tells the truTh. All the other lie , including Esther - his fiancee.

Posted by Ady TZIDON on 2013-03-25 09:40:36