Case 303
Who is guilty?
Exactly one suspect is guilty. The guilty suspect lies. Every innocent suspect tells the truth.
Isla: “Neither Sam nor Cole is guilty.”
Sam: “Freya is innocent.”
Freya: “The guilty person is either Sam or Eva.”
Cole: “Isla is innocent.”
Eva: “None of Sam, Cole or 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.