Fun for the whole family, the book contains more than 100 superb puzzles. Merlin the Magician, Avalon, King Arthur, and other mythical people and places feature

This Book of Riddles is loaded with new and classic mind bending logical conundrums, number puzzles, visual tricks, and more fun for the whole family.

This exclusive companion book to the bestselling Mysterious Benedict Society series is a mind-bending collection that will put YOU to the test! With full-color

My mind rebels at stagnation. Give me problems, give me work, give me the most abstruse cryptogram or the most intricate analysis, and I am in my own proper atm

Codex Enigmatum is a richly illustrated puzzle book, filled with a diverse mix of unique and interrelated brain teasers, riddles and conundrums. It features man