Big Book of Sudoku: Over 500 Puzzles & Solutions, Easy to Hard Puzzles for Adults (Brain Busters)

OVER 500 PUZZLES SOLUTIONS: Hours of fun and entertainment to enjoy!| VARIETY OF LEVELS: From levels 1 to 3 increasing levels of difficulty including Warm Up Challenging and Tough. When you are done test your skills on the ultimate Samurai Sudoku Puzzle – 5 puzzles linked together by a central puzzle! Can you become a master samurai?| LAY FLAT: Spiral-bound lays flat for ease of use at home or on the go.