Sudoku Book 1,600 Puzzles, 400 Easy, 400 Medium, 400 Hard and 400 Extra Hard
Subtitle: Bargain Size Sudoku Puzzle Book With Four Levels of Difficulty To Improve Your Game
Publisher: Createspace Independent Publishing Platform; CreateSpace Independent Publishing Platform
Published: May 13, 2017
Format: paperback
Number of pages: 542
ISBN-13: 9781546665199
Notes: Source title: Sudoku Book 1,600 Puzzles, 400 Easy, 400 Medium, 400 Hard and 400 Extra Hard: Bargain Size Sudoku Puzzle Book With Four Levels of Difficulty To Improve Your Game (Sudoku Book Challenger Series)