Each of the doors has a sign bearing a statement that may be either true or false. If a lady is in room one then the statement on that door is true, otherwise it is false. If a lady is in room one then the statement on that door is true, otherwise it is false. If a lady is in room one then the statement on that door is true, otherwise it is false. Suppose you are visiting a forest in which every inhabitant is either a knight or a knave.
Knights always tell the truth and knaves always lie.
In addition some of the inhabitants are werewolves and have the annoying habit of sometimes turning into wolves at knight and devouring people. A werewolf can be either a knight or a knave. You are interviewing three inhabitants, A, B, and C, and it is known that exactly one of them is a werewolf. I am a werewolf. At most one of us is a knight.