(Paperback)

Part of the brain-boosting Sherlock Puzzle series, Code Breakers presents 100+ classic cryptogram puzzles.

(Paperback)

The Ultimate Sherlock Holmes Puzzle Book challenges quick-thinkers in a 3-pronged interactive adventure inspired by the stories of the great detective-with over 144 puzzles, including cryptograms, crosswords, ciphers, riddles, and logic games.

(Paperback)

Suitable for anyone interested in the science of secrecy and clandestine codes, this collection of colourful exercises gives amateurs an opportunity to test their deciphering skills. Each chapter features a brief historical background of the character and code, as well as six cryptograms using authentic alphabets to give your brain a fun workout.

(Paperback)

These mind-benders, brainteasers, and puzzles were carefully selected so that none will be too tough for anyone without a math background - but they're not too easy. Includes solutions.

(Paperback, First Edition, First ed.)

Stimulating and delightful, this collection of puzzles features original and classic brainteasers that are neither too hard for those without a math background nor too easy for the mathematically adept. Includes solutions.

(Paperback)

Part of the brain-boosting Sherlock Puzzle Holmes series, Visual Puzzles presents 100+ challenging picture puzzles.