This SUDOKU puzzle book in large print will give you the best visibility to play. It was made by a team of professionals.Size 8.5 x 11 in.Matte, soft cover. White leaves. 20 PUZZLES Easy, 40 puzzles Medium, 40 puzzles Hard and the solutions at the end of the book.SUDOKU helps develop memory and maintain a healthy brain and improves the level of mathematics for children.It is a great gift idea for kids and adults. So don't hesitate