When you buy this book you get an electronic version (PDF file) of the interior of this book. You can play the puzzles in this book on your mobile phone! Jigsaw Sudoku is a fun and addicting logic puzzle game. Jigsaw Sudoku is ideal to introduce your child to inequality signs and logical thinking. Jigsaw Sudoku teaches your child logical thinking and deductive reasoning skills, even at a young age. Jigsaw Sudoku improves critical thinking and making quick decisions based upon available evidence. Jigsaw Sudoku is a brain game that helps to train the brain of your child. In addition, Jigsaw Sudoku demands attention to detail - noticing patterns, spotting opportunities, and finding the right moment to make a move. Jigsaw Sudoku is not only fun and interesting – it might just help prepare your kids for better success in school and in life. Only 1 large print puzzle per page, with lots of white space for scribbling. Jigsaw Sudoku For Kids 6x6 - Easy to Hard is a collection of 145 puzzle: 8 easy Jigsaw Sudoku puzzle per grid size (6x6, 8x8, 9x9), totaling 52 easy puzzle 36 medium Jigsaw Sudoku puzzle per grid size (6x6, 8x8, 9x9), totaling 36 medium puzzle 36 hard Jigsaw Sudoku puzzle per grid size (6x6, 8x8, 9x9), totaling 36 hard puzzle 21 extra logic puzzle The goal of Jigsaw Sudoku is to fill in the empty cells, one number in each, so that each column, row, and region contains each number exactly once. The regions are of irregular shape. I guarantee that every logic puzzle in this Jigsaw Sudoku puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzle in this book will appear in any of the other English PuzzleBooks.net books. Jigsaw Sudoku is also known as Geometry Sudoku, Irregular Sudoku, Squiggly Sudoku, Kikagaku Nanpure.