512 SUDOKU Puzzles: Easy, Medium, Hard and Extreme Sudoku Puzzle Book including Instructions and answer keys

This book contains 512 SUDOKU puzzles of varying difficulty, meant to take you to a journey of discovery and eventually mastery of this century’s most addictive game.

There are plenty of puzzles for you to enjoy: There are 128 EASY, 128 MEDIUM, 128 HARD and 128 EXTREME puzzles, if you want a real challenge.

Whatever you´re looking for, there´s something for you in this Sudoku Book.

Good luck and play! Keep your brain fit, young, and flexible! 

• Large print on white paper is very easy to read 
• Instructions and solving techniques for beginners are included
• Each puzzle has one solution - provided at the back of the book.
• Extra wide center marginsmake it easier to solve the puzzles when you fold the book back, or if you want to tear out the pages.
• You will also get another 100 Sudokus and extended solution techniques as a bonus for download

In this series, books are also available in the difficulty levels: Easy, Medium, Hard and Extreme