If you're new to Sudoku or you're looking for a new challenge... ...this sudoku book will give your brain a healthy workout to stay in shape. Sudoku is a puzzle game based on logic . If practiced daily, it can improve basic thinking and learning skills that most of us can apply to everyday life. Memory and logic are interconnected ; if one is affected, the other will undoubtedly be affected as well. Therefore, Sudoku can show improvements in memory . So, if you are ever disoriented from time to time, practicing Sudoku might be a good method to decrease that. Why buy "Sudoku puzzles with answers: Sudoku easy medium hard and very difficult sudoku (Volume 1)"? ♥ KEEPS YOUR BRAIN COGNITIVELY SHAPE, FLEXIBLE AND YOUNG: It increases your concentration, logic and reasoning and decreases your brain age in minutes a day!. ♥ DEVELOPING YOUR SKILLS IS WITHIN EVERYONE'S SCOPE: Anyone can learn to solve them very easily, you don't need outside knowledge like crosswords. ♥ 400 PUZZLES AND SOLUTIONS: Hours of fun and entertainment to enjoy ! The solutions at the end of the book for those more rebellious puzzles. ♥ FUN FOR ALL LEVELS: From beginners to experts with hard sudoku puzles. ♥ IS A GREAT GIFT: For the sudoku lover, this book is a great gift for any occasion ! Birthday, road trip or more, everyone will love it!. Problem levels have been evaluated by experts to determine consistency. ♥ LARGE LETTER: Larger than most newspapers. ♥ LARGE SIZE BOOK: 8.5 X 11 inches for better visualization of the sudoku pages. ♥ VERY DIFFICULT SUDOKU: Includes puzzles that are a real challenge. What are you waiting for, get your copy right now by CLICKING the "ADD TO CART" button and start your journey of cognitive improvement and lots of fun ! Your brain will thank you!