Case 167
Who is guilty?
Exactly one suspect is guilty. The guilty suspect lies. Every innocent suspect tells the truth.
Isla: “Neither Isla nor Eva is guilty.”
Sam: “The guilty person is one of Freya, Cole or Eva.”
Freya: “The guilty person is one of Isla, Sam or Cole.”
Cole: “None of Sam, Freya or Cole is guilty.”
Eva: “The guilty person is one of Sam, Cole or Eva.”
Random case Solution: Cole 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.