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 | Will Shortz Presents Coffee and KenKen by Tetsuya Miyamoto, Paperback | Indigo Chapters