Big Book of Killer Su Doku Book 1: A Bumper Killer Sudoku Book for Adults Containing 300 Puzzles

A massive 300 killer sudoku puzzles packaged in a stylish paperback - this is the perfect killer sudoku gift book for adults of any age. With a mix of 100 easy, 100 medium and 100 hard puzzles, the 9 x 9 grids are each arranged on their own page and solutions are easily found in the back of the book. Printed in a highly portable format, the book can be taken on your travels or sit neatly on your nightstand.

Richardson Puzzles and Games come from Richardson Publishing Group, an independent non-fiction publisher that contributes at least 50% of its profits to charitable projects around the world.