A positively HUGE book of 500 sudoku puzzles for all skill levelsWhat's better than a book of sudoku? A Great Big Book of Sudoku! If you can't get enough of these grids, you're sure to enjoy this extra-large collection of 500 sudoku puzzles that get progressively challenging as you go. Features: - 500 easy to hard puzzles- Big grids for easy solving- Introduction by legendary Puzzlemaster Will Shortz | Will Shortz Presents The Great Big Book Of Sudoku Volume 1, Paperback | Indigo Chapters