CASE ZERO
Case 081

Who is guilty?

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

Maya: “Neither Noah nor Owen is guilty.”
Noah: “None of Maya, Noah or Owen is guilty.”
Lena: “Maya is innocent.”
Owen: “Noah is innocent.”
Iris: “Noah is guilty.”
Random case
Solution: Iris 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.