The big book of brain games : 100 playthinkgs of art, mathemtics & science

About the original 1000 Playthinks, Will Shortz of the "New York Times" said it best: "The most wide ranging, visually appealing, entertaining, gigantic collection of brainteasers since Sam Loyd's "Cyclopedia of Puzzles" almost a century ago." Now comes the same great Playthinks, but in a package that makes it an amazing value: "The Big Book of Brain Games".

With a more accessible title, it is presented in a more accessible format (perfect-bound in a slightly smaller, friendlier format, here is Playthinks perfected.) Inside, we wouldn't change a thing.

With an obsessive collection of 1000 challenges, puzzles, riddles, illusions - originals as well as must-do classics - it's like salted peanuts for the brain.

With jam-packed pages and full-colour illustrations for each entry, the book, opened anywhere, is a call to action.

Twelve basic categories include Geometry, Patterns, numbers, logic and Probability, and perception.

An easy to read key at the top of each game ranks its difficulty on a scale of 1 to 10, while indices in the back cross-reference the puzzles. (You'll find the answers back there, too)