Big Book of Super Fiendish Su Doku Book 1 - a bumper fiendish sudoku book for adults containing 300 puzzles

A massive 300 super fiendishly hard sudoku puzzles packaged in a stylish paperback - this is the perfect gift book for the avid sudoku fan. The 9 x 9 sudoku grids are each arranged on their own page and solutions are easily found at the back of the book. Printed in a highly portable format.