Unit 15 · Truth and Lie Logic
Four Animals — Which One Tells the Truth?
Lesson 1 of 2
Exactly one truth-teller puzzles unlock when you start with a meta-line (“X is lying”) and cascade: truth → fact, everyone else → negate.
One-truth-teller animal accusations recur on Selective mocks — the assume-and-cascade method is the same every time with four characters.
You must identify who tells the truth and who took the trophy so that exactly one statement is true and the thief is forced by the liars’ false claims.
Four animals each make one accusation or denial. Only one tells the truth. You find who took the trophy (or similar).
Best approach: Try the speaker who comments on another’s honesty first (e.g. Tiger: “Rabbit is lying”). If that cascade gives exactly one truth-teller and one thief, stop. Otherwise test the next character.
Question
Only one of these animals tells the truth:
- Fox: "Rabbit took the trophy."
- Rabbit: "Tiger took it."
- Owl: "I didn't take it."
- Tiger: "Rabbit is lying."
Who took the trophy?
Select an answer to see the explanation.
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