Case 059
Who is guilty?
Exactly one suspect is guilty. The guilty suspect lies. Every innocent suspect tells the truth.
Ruby: “None of Ruby, Theo or Jade is guilty.”
Theo: “None of Theo, Mila or Jade is guilty.”
Mila: “The guilty person is either Finn or Jade.”
Finn: “The guilty person is either Ruby or Jade.”
Jade: “The guilty person is one of Theo, Mila or Finn.”
Random case Solution: Finn 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.