★ With Mastering Sudoku : 1000 puzzles easy to hard , you don't need to be a math genius. Puzzles are laid out gently; starting slowly with a very easy difficulty rating, then ramping up at slow pace - at your pace really ! - • 1000 puzzles and solutions : Hours of fun and entertainment to enjoy! • Multiple Levels : From levels 1 to 7, increasing levels of including Tough, Hard and Insane. • The perfect gift : For the Sudoku enthusiast, this books makes a great gift ! Christmas, birthdays, surprises, travels, everyone will love it! ★ Suitable for all beginner to expert • Bigger print than in most newspapers and (and with better paper) • Easy to tear thanks to wide margins