Easy To Hard Travel Sudoku Puzzle Books For Adults Pocket Sized - Large Print Enjoy the addictive and challenging puzzles for adults with 9x9 classic Sudoku puzzle, This Sudoku puzzle book come with 3 difficulty levels, there are 60 Easy, 60 Medium and 60 Hard, timer killer and perfect puzzle book for traveling, Enjoy your holiday and the puzzling! Book Description 180 puzzles (60 Easy, 60 medium, 60 hard) - 2 puzzles / page with large print - 108 pages - Book size: 6" x 9" (15.24 x 22.86 cm) - Paperback matte cover - Print on quality white paper easy to read - Hours of fun while trevaling or make a great gift for your family, friend or loved ones!