Will Shortz Presents Coffee and KenKen : 100 Easy to Hard Logic Puzzles That Make You Smarter

Wake up your mind with KenKen This collection of easy to challenging KenKen puzzles is perfect for solvers looking to caffeinate their minds and jump-start their day. Includes: - 100 easy to challenging KenKen puzzles - Puzzles that range in size from easy 4x4 grids to challenging 9x9 grids - Introduction and solving instructions by puzzlemaster Will Shortz