SUDOKO Puzzle Books for Adults: Math Puzzles for Brain Train - Hard Level - 100 Puzzles 9x9 SUDOKUS With Solutions - Makes a Great Gift for Teens, Adu - Paperback
Train your logical thinking with this Sudoku Puzzle Book. 100 Sudoku Hard, Extreme Sudoku puzzles including solutions ! Sudoku is one of the best ways to train logical thinking. Details about this Sudoku book: - 100 9x9 Sudokus. - 6 x 9 IN. - With solutions. - Difficulty level: Hard to Extreme. - 1 puzzle per page. Keep your brain fit, young and flexible ! Perfect gift for loved ones or for yourself !