Study guides › Level 8 · Detective

Truth-tellers, four people

Level 8 · for four people who each always tell the truth or always fib

💡 The idea

Same rules as Level 6, with more people. Group people who must be the same kind or opposite kinds first.

🪜 The steps

1. “X tells the truth” from a truth-teller means X is honest; from a fibber, X fibs. So speaker and X are the same kind.
2. “X fibs” makes speaker and X opposite kinds.
3. Use these links to sort everyone into two teams, then find which team is honest.

⚠️ Watch out

• “Exactly two of us tell the truth” counts the speaker too.

🎯 Try these

1. A says: “B fibs.” B says: “C tells the truth.” C says: “A and I are different kinds.” Who tells the truth?

Answers: 1) B and C (A fibs)

This guide is also in the 10LogicQ app: tap “📖 Study guide” after a puzzle.