Sudoku Puzzle Book: Over 500 Puzzles for Adults & Kids Including Easy, Medium, Hard, Expert & Extreme
This is the perfect book for you or a friend. Invest in your mind by working these puzzles daily, or give this book to a friend, colleague, or relative as a thoughtful gift for a birthday, holiday, or just because With multiple difficulty levels, there's something for everyone. Sudoku masters can wrestle with the Expert puzzles, while the newcomer can learn from the simply-written instructions and then begin tackling the Easy ones.
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There is an answer key for each and every puzzle so that you can check your completed puzzles or give yourself a hint when stumped. Never feel confused with this comprehensive and accurate answer key.
Anyone who loves Sudoku will love this book