Sleepless with Sudoku

All over the country people can't sleep, can't eat, can't think about anything but sudoku! People all over the world can't get enough of this addictive and delightful number puzzle. Now you too can discover the puzzle that the world just can't put down.Features:- 100 all-new puzzles- Edited by legendary New York Times crossword editor, Will Shortz- Big grids with lots of space for easy solving