Sudoku is a fun and addicting logic puzzle game that has taken the world by storm. This book is ideal if you are a Sudoku expert. In this book, you find the most extreme Sudoku puzzles ever. You will have a mighty great time solving more than 400 extremely difficult Sudoku puzzles. Once you pick up this book, you won't be able to put it back down. You have been warned!Classic Sudoku 9x9 Deluxe - Extreme is a collection of 468 puzzles: 408 extreme Sudoku 9x9 puzzles 60 extra logic puzzles I guarantee that every logic puzzle in this 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.Sudoku is also known as Number Place, Nanpure, Su Doku. Quite often Sudoku is misspelled as Suduko, Soduko, Sodoku, Sudoko, Suduku and Soduku.