This spiral bound book of fun includes 225 challenging sudoku puzzles, printed one per page. For those new to these number puzzles, the object is to fill in each grid so the numbers 1 through 9 appear one time only in every row, column and 3" x 3" box. This large print version of sudoku puzzles allows you to work your brain without tiring your eyes! The book measures 8" by 10" and weighs about 2 pounds. Solutions are given at the back of the book (but no cheating unless you're really stumped!).