Case 239
Who is guilty?
Exactly one suspect is guilty. The guilty suspect lies. Every innocent suspect tells the truth.
Isla: “Neither Sam nor Freya is guilty.”
Sam: “Eva is guilty.”
Freya: “The guilty person is one of Freya, Cole or Eva.”
Cole: “Isla is innocent.”
Eva: “Neither Freya nor Eva is guilty.”
Random case Solution: Eva 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.