KindKids Super Sudoku: A Super-Cute Book of Brain-Boosting Puzzles for Kids 6 & Up (KindKids, 3): Better Day Books: 9780764365614: Amazon.com: Books
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Tune Up Your Brain Medium Level Sodoku Puzzles For Adults: 100 Large Print Sudoku Puzzle Book: Kansas, Pivot: 9798474093581: Amazon.com: Books
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