Case 039
Who is guilty?
Exactly one suspect is guilty. The guilty suspect lies. Every innocent suspect tells the truth.
Isla: “Neither Isla nor Cole is guilty.”
Sam: “Neither Isla nor Sam is guilty.”
Freya: “The guilty person is one of Sam, Freya or Eva.”
Cole: “Neither Cole nor Eva is guilty.”
Eva: “The guilty person is one of Isla, Sam or Freya.”
Random case Solution: Sam 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.