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 if you are a Jigsaw Sudoku 10x10 expert. In this book, you find the most extreme Jigsaw Sudoku puzzles ever. Once you pick up this book, you won't be able to put it back down. You have been warned!Jigsaw Sudoku 10x10 - Extreme is a collection of 276 puzzles: 216 extreme Jigsaw Sudoku 10x10 puzzles 60 extra logic puzzles 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.