92. 

In this problem, A and B made the following statements:

$A:$ At least one of us is a liar.

B: C is a werewolf.

And in this problem, it is known that exactly one of them is a werewolf and that he is a knight. Who is the werewolf?
92. From statement A, it follows that A must be a knight and at least one of the three must be a liar. If B were a knight, then C would be a werewolf and, therefore, another knight, but then all three would be knights. Therefore, B is a liar. But then C is not a werewolf. Since it is known that the werewolf is a knight, B cannot be a werewolf either. Therefore, the werewolf is A.