Jigsaw Sudoku is Sudoku with a twist. Instead of square shaped regions, the regions are irregularly shaped. This makes solving a Jigsaw Sudoku puzzle that little bit more difficult than classic Sudoku. This book is ideal for you if you already know how to solve Jigsaw Sudoku 12x12 puzzles but you find our hard and extreme Jigsaw Sudoku puzzles too difficult. Once you pick up this book, you won't be able to put it back down. You have been warned!Jigsaw Sudoku 12x12 - Medium is a collection of 276 puzzles: 216 medium Jigsaw Sudoku 12x12 puzzles 60 extra logic puzzles 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 puzzles in this book will appear in any of the other PuzzleBooks.net books.Jigsaw Sudoku is also known as Geometry Sudoku, Irregular Sudoku, Squiggly Sudoku and Kikagaku Nanpure.