Case 143
Who is guilty?
Exactly one suspect is guilty. The guilty suspect lies. Every innocent suspect tells the truth.
Isla: “The guilty person is either Sam or Freya.”
Sam: “Cole is innocent.”
Freya: “The guilty person is either Sam or Eva.”
Cole: “Freya is guilty.”
Eva: “The guilty person is one of Isla, Sam or Freya.”
Random case Solution: Freya 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.