CASE ZERO
Case 104

Who is guilty?

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

Ada: “The guilty person is one of Mia, Ben or Skye.”
Luke: “The guilty person is one of Luke, Mia or Ben.”
Mia: “Luke is innocent.”
Ben: “Ben is innocent.”
Skye: “Neither Luke nor Skye is guilty.”
Random case
Solution: Ben 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.