The Must Have 2013 Sudoku Puzzle Book: 365 Sudoku Puzzle Games to challenge you every day of the year. Randomly distributed and ranked from easy and moderate to cruel and deadly! Mammoth Sudoku

by Jonathan Bloom Paperback details (USA). ISBN: 978-0-9870039-5-9 ISBN-10: 0-9870039-5-X Sudoku Books · 2012