CASE ZERO
Case 052

Who is guilty?

Exactly one suspect is guilty. The guilty suspect lies. Every innocent suspect tells the truth.

Chloe: “The guilty person is one of Leo, Esme or Nina.”
Leo: “None of Chloe, Leo or Kai is guilty.”
Esme: “Neither Chloe nor Kai is guilty.”
Kai: “Neither Chloe nor Leo is guilty.”
Nina: “Neither Esme nor Nina is guilty.”
Random case
Solution: Nina is guilty. Testing each possible culprit leaves this as the only assignment where the culprit's statement is false and all four innocent statements are true.