First introduced to the public by Lewis Carroll in the late 19th century, logic puzzles have been popular ever since. Games like Sudoku and Mastermind are fun and engrossing recreational activities, but they also share deep foundations in mathematical logic and are worthy of serious intellectual inquiry. While exploring the history and future of logic puzzles, Jason Rosenhouse also enables you to test your skill against a variety of puzzles yourself, including the "Hardest Logic Puzzle Ever," metapuzzles, paradoxes, and the logic puzzles in detective stories.