There's always time for a little mental exercise and what better way to flex your mental muscles than with sudoku? So grab a pencil and strengthen your mind today! Features:· 100 all-new easy to hard puzzles· Edited by legendary New York Times crossword editor Will Shortz· Big grids with lots of space for easy solving | Will Shortz Presents Sudoku for a Brain Workout, Paperback | Indigo Chapters