Case 234
Who is guilty?
Exactly one suspect is guilty. The guilty suspect lies. Every innocent suspect tells the truth.
Ava: “Zoe is guilty.”
Eli: “Zoe is innocent.”
Nora: “The guilty person is one of Ava, Nora or Zoe.”
Miles: “The guilty person is one of Ava, Eli or Nora.”
Zoe: “Neither Eli nor Zoe is guilty.”
Random case Solution: Ava 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.