6 books in 1! Six Levels of Sudoku in 1 one book. From beginner to expert. This large-print 8.5" x 11" book is great for those who love large-print font for easy visibility. There are two puzzles on each page and the solutions are on the following page in the same size. Two big puzzles on each page give you plenty of space to note candidates and sturdy paper holds up well to erasing. Large inside margins make it easier to solve the puzzles when you fold or tear out the pages. The tear-out page has the puzzles on the front and the solutions on the back. Great for sharing! Large print on white paper is very easy to read (even in dim light). The puzzles are for people who either want to progress in developing their skill in Sudoku.