Will Shortz Presents Brain-Training KenKen: 100 Challenging Logic Puzzles That Make You Smarter

Boost your brainpower with KenKen!

This collection of KenKen will help you flex your mental muscles. So grab a pencil and see if you''re a KenKen master!

Includes:
- 100 challenging KenKen puzzles
- Puzzles that range in size from easy 5x5 grids to mind-bending 9x9 grids
- Introduction and solving instructions by puzzlemaster Will Shortz