Case 049
The Cut Cable
A network cable was cut in a restricted room.
Rule: exactly one suspect is guilty. The guilty suspect lies. Every innocent suspect tells the truth.
Elliot
“Either Noah or Lane is guilty.”
Noah
“Dakota is innocent.”
Lane
“Avery and Dakota are both innocent.”
Avery
“Neither Noah nor Dakota is guilty.”
Dakota
“Either Elliot or Lane is guilty.”
Who is guilty?
Solution: Elliot
If Elliot is guilty, Elliot's statement is false and every other statement is true. Testing the other suspects creates at least one contradiction.