What makes puzzles --- jigsaws, mazes, riddles, sudokus --- so satisfying? A.J. Jacobs --- New York Times bestselling author, master of immersion journalism and nightly crossworder ---- set out to determine their myriad benefits. And maybe, in the process, solve the puzzle of our very existence. Well, almost. In THE PUZZLER, Jacobs meets the most zealous devotees, enters (sometimes with his family in tow) any puzzle competition that will have him, unpacks the history of the most popular puzzles, and aims to solve the most impossible head-scratchers, from a mutant Rubik’s Cube, to the hardest corn maze in America, to the most sadistic jigsaw.