CASE ZERO
Case 126

Who is guilty?

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

Amira: “The guilty person is either Tess or Hugo.”
Jack: “Neither Hugo nor Mae is guilty.”
Tess: “The guilty person is either Amira or Jack.”
Hugo: “None of Jack, Hugo or Mae is guilty.”
Mae: “Neither Jack nor Tess is guilty.”
Random case
Solution: Amira 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.