This Samurai Sudoku book is packed with the following features: - 500 Hard Sudoku puzzles overlapping into 100 Samurai style.- One puzzle per page (8.5 x 11 inches) and large print font for prevention of eye-strain- Answers to every puzzle are provided.- Each puzzle is guaranteed to have only one solution.Includes free bonus puzzles you can download book (Tons of Sudoku Puzzles for Adults & Seniors) Includes free bonus puzzles you can download book (Word Search With Hidden Message: 102 Puzzles for Adults and Seniors)