Relax and enjoy solving these 200 Medium puzzles to stay sharp and have fun! This large-print 8.5" x 11" book won't fit in your pocket, but you can slip it in your briefcase, carry-on or beach bag and relax with a puzzle in your spare moments. You can also just tear out a page and take it with you. Two big puzzles on each page give you plenty of space to note candidates and sturdy paper holds up well to erasing. Extra wide center margins make it easier to solve the puzzles when you fold the book back. Large print on white paper is very easy to read (even in dim light). Each puzzle has one solution - provided at the back of the book. Go ahead and peek if you get stuck or want to verify your answer. Advance from Mild to Medium puzzles as you improve and gain experience. BONUS: 10 Hard puzzles are included to see if you are ready for the next more difficult level Sudoku book. Get more than one book and arrange a friendly challenge! Contains 60 Mild and 140 Medium puzzles, plus 10 bonus Hard Sudoku. If you were misled by other books with impossible Sudoku puzzles labeled "easy" or beginner puzzles called "moderate," we feel your frustration. What is "easy" for one person can be a serious challenge for another. Because there is no official Sudoku grading standard, you have no way to compare puzzles from different authors. For example, an easy puzzle in a book is often called moderate or hard in a newspaper, and categories are not precise. To help you confidently select puzzles at the level you want, Puzzle Books Plus is committed to using a consistent grading standard for Sudoku books by Kat Andrews. We determine difficulty by the logic techniques needed to solve the puzzle. Look inside the book to see the logic techniques used for Medium Sudoku.