Case 294
The Stolen Watch
A valuable watch disappeared during a private gathering.
Rule: exactly one suspect is guilty. The guilty suspect lies. Every innocent suspect tells the truth.
Blake
“Either Jordan or Kendall is guilty.”
Finley
“Either Blake or Jordan is guilty.”
Jordan
“Dakota is innocent.”
Kendall
“Jordan is innocent.”
Dakota
“Neither Finley nor Jordan is guilty.”
Who is guilty?
Solution: Blake
If Blake is guilty, Blake's statement is false and every other statement is true. Testing the other suspects creates at least one contradiction.