Sudoku Book 400 Extra Hard Puzzles: Sudoku Puzzle Book With Only One Level of Difficulty (Paperback) (ISBN-13: 9781544954325)

Sharpen up your mind and improve your memory by playing Sudoku every day. Sudoku stimulates your mind, increases concentration and makes you feel happy by giving you a sense of accomplishment. It is said it can also reduce the chance of developing Alzheimers.

This Sudoku puzzle book contains 400 puzzles with a single level of difficulty, so there are no wasted puzzles. There are 4 puzzles per page and solutions are at the end of the book.

Author: Sudoku Book
ISBN-10: 1544954328
ISBN-13: 9781544954325
Publisher: Createspace Independent Publishing Platform
Language: English
Published: 03/27/2017
Pages: 142
Format: Paperback
Weight: 0.76lbs
Size: 11.02h x 8.50w x 0.30d