Life's busy but there's alway time for a KenKen puzzle. This portable paperback collection contains 100 easy to hard puzzles that range in size from 3x3 warm up grids to challenging 9x9 size puzzles that really make you break a mental sweat.

Features:
* 100 all-new easy to hard KenKen puzzles
* Big grids for easy solving
* Introduction and instructions from puzzlemaster Will Shortz.