Esther is engaged. Her fiancé is either Arthur, Barton, Claude, or Dexter.
- Each of the four men and Esther is a knight or a liar.
- Arthur says: "Exactly one of us four men is a knight."
- Barton says: "Exactly one of us four men is a liar."
- Claude says: "Arthur or Barton is Esther’s fiancé."
- 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.