Sudoku 200 has Easy and Medium puzzles for beginners just starting to play and also great for seniors with the large print two puzzles a page. The book has two sections with answers after each section. *100 easy with answers. *100 medium with answers. The book is 8.5 x 11 inches with 158 pages and with two puzzles per page they are large enough to write your notes in the squares and around the outside of the puzzle.