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Preschool Sudoku: 2x2 and 4x4 Sudoku Puzzles for Kids: Kattan, Peter I, Kattan, Nicola I: 9781450563055: Amazon.com: Books
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Little Sudoku Genius (Elementary): Easy Sudoku Book (2x2 and 4x4) for Kids & Beginners: Whiz, Child: 9798538525331: Amazon.com: Books
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Preschool Sudoku: 2x2 and 4x4 Sudoku Puzzles for Kids: Kattan, Peter I, Kattan, Nicola I: 9781450563055: Amazon.com: Books
![Preschool Sudoku: 2x2 and 4x4 Sudoku Puzzles for Kids: Kattan, Peter I, Kattan, Nicola I: 9781450563055: Amazon.com: Books Preschool Sudoku: 2x2 and 4x4 Sudoku Puzzles for Kids: Kattan, Peter I, Kattan, Nicola I: 9781450563055: Amazon.com: Books](https://images-na.ssl-images-amazon.com/images/I/714ndeLUMoL.jpg)