Containing 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 bedside table.