500 Extra Hard Sudoku Puzzles: Active Brain Series Book 4 - Paperback

by T. K. Lee (Author)

Active Brain Series bumper book of 500 extra hard Sudoku puzzles with solutions. Sudoku is a fun way to exercise your brain and there are plenty of puzzles in this book to give it a really good workout The book is 8.5" by 11" and has 4 puzzles per page.