The Challenging Sudoku Puzzle Book for Experts - Can you solve them all? Our skill levels are accurate (Under puzzles you can see a difficult value). Plenty of puzzles: 320 Easy Puzzles . There are 4 puzzles per page : it will be easy for your eyes. For beginners Book size: 8.5 x 11 inch (ca. DIN A5) Including instructions Solutions at the back of the book The Sudoku puzzle book is the perfect gift for adults who love brain jogging and mental excercises.