Hard Sudoku: 500 Hard Sudoku Puzzles for adults (Paperback) (ISBN-13: 9798643310563)

Keep your mind young and your memory sharp with the 500 Hard and challenging Sudoku puzzles in this book.

Scientific research has shown that solving logic puzzles as Sudoku keeps your memory sharper and your mind younger.

There are 5 levels of the puzzles from Hard to Extreme (100 puzzles in each level) with instructions, examples, and solutions.

Specifications

• Size: 8 x 11.5 inch (large size) with softcover and paperback binding.
• Pages: 113 pages with full-page 500 different puzzles. Plus the Answers of all the puzzles at the end.

Stretch your brain with this unique selection of fun and challenging Sudoku. Scroll up and order your copy.