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The Dungeon Master's Riddle

A TED-Ed logic riddle: three adventurers each drank a truth or a lying potion, and you must figure out which one is the cleric from their tricky statements — a classic 'liars and truth-tellers' deduction puzzle.

How it works

  • Press play to start the video.
  • Videos 5 minutes or longer pause once or twice for a quick check. Get it right and you're on your way. If not, you'll see a friendly explanation and the video simply keeps going. Short videos skip the checks.
  • At the end there's a 3-question test. Score 60% or more to complete the lesson, and 80% or more to master it. You can always watch again and try for a higher score.