Sudoku is a fun and addicting logic puzzle game that has taken the world by storm. This book is ideal if you already know how to solve Sudoku puzzles but find our hard or extreme Sudoku puzzles too difficult. Once you pick up this book, you won't be able to put it back down. You have been warned!The goal of Sudoku is to fill in the empty cells, one number in each, so that each column, row, and region contains the numbers 1 to 9 exactly once.Classic Sudoku 9x9 Deluxe - Medium is a collection of 468 puzzles: 408 medium 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.