CASE ZERO
Case 093

Who is guilty?

Exactly one suspect is guilty. The guilty suspect lies. Every innocent suspect tells the truth.

Sofia: “Lily is innocent.”
Max: “None of Sofia, Max or Lily is guilty.”
Lily: “The guilty person is either Sofia or Cleo.”
Ezra: “The guilty person is either Max or Cleo.”
Cleo: “The guilty person is either Max or Ezra.”
Random case
Solution: Cleo 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.