Case 067
Who is guilty?
Exactly one suspect is guilty. The guilty suspect lies. Every innocent suspect tells the truth.
Ruby: “Neither Ruby nor Theo is guilty.”
Theo: “Finn is innocent.”
Mila: “The guilty person is one of Ruby, Theo or Finn.”
Finn: “The guilty person is either Ruby or Jade.”
Jade: “Neither Mila nor Finn is guilty.”
Random case Solution: Ruby 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.