SUDOKU for Kids Easy level Volume 1 book contains 60 easy level Sudoku puzzles. This book has two section. The first section has the Sudoku puzzles in very easy version one page per puzzle. The second section has the answer for each puzzle. How to play Each Sudoku has 9x9 spaces that includes 3x3 Sudoku spaces. In each spaces has empty squares that need to be filled out with the number 1 - 9, without repeating any number in the same row and column or square.