The number 011 can refer to: * Puzzle Arc and Line from Professor Layton and the Curious Village * Puzzle Trees in the Forest from Professor Layton and the Diabolical Box * Puzzle The Professor's Hat from Professor Layton and the Unwound Future * Puzzle Downhill from Here from Professor Layton and the Last Specter * Puzzle Backstage Blunder from Professor Layton and the Miracle Mask * Puzzle A Laborious Litre from Professor Layton and the Azran Legacy * Puzzle The Royal Victim from Professor Layton vs. Phoenix Wright: Ace Attorney