Sudoku Puzzle Book for Adults or Really Smart Kids! Green Series - 3 Levels (Easy, Medium, Hard)Sudoku is a good logic game for a carefree hobby. You can unwind and relax, but also Sudoku is amazing in improving memory, critical thinking, reasoning, and problem-solving.162 Easy to Hard Sudoku Puzzles with Solutions is a great value for dedicated logic puzzlers!The Gold Star Puzzle Master listened to what you wanted in a perfect Sudoku book: Perfect Book Size - 8"x10" Easy to use book size. 2 puzzles per page. Easy storage from backpacks to purses!Larger Puzzle Grid - 3.5" puzzles provide the perfect amount of space to take notes but still allows for rapid scanning. Enhanced Font Size - 20-point numbers are easy on the eyes. That's over a quarter inch!Fascinating Wisdom - Steadfast Japanese proverbs throughout the book. Kanji, Pronunciation, Literal translation, and the English Essence. Accurate Skill Levels - Our Green Series books offer Level 1,2, and 3. Easy Medium, and Hard (54 puzzles each). If you want another level challenge check out our other Blue, Purple, Orange, and Red Series. Complete Solutions - All puzzles have complete solutions in the back of the book to ensure your problem-solving is on track.Bonus Puzzles - 12 free Sudoku variation puzzles. Sudoku X, Hyper Sudoku, Letters, 12x12, 16x16. Gold Star Puzzles are created by logic puzzle fanatics for logic puzzle fanatics! We ensure accurate and challenging puzzles with one path to solve. Gold Star Puzzle books will bring many hours of fun yet challenging puzzle enjoyment. Our puzzle books logically make the best gift or birthday present.We know you will love our puzzle books so start your Gold Star Puzzle journey today!