Sudoku: Easy to Medium: Pitkow, Xaq: 9780811856256: Amazon.com: Books
Mobile Sudoku:Amazon.com:Appstore for Android
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Hard 6x6 Sudoku Puzzles for Kids: 100 Mini Sudoku Puzzle for Children / Ages 6-9 / Large Print / Handy Size: Sharpened Pencil Press: 9781072871309: Amazon.com: Books
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Jigsaw Sudoku-x Pocket Rocket- 100 Hard Pocket Size Jigsaw Sudoku-x Puzzles - Volume 5: Handy 4 x 6 inch layout – 1 Puzzle per Page (Hard Jigsaw Sudoku-x Pocket Rocket): Demarco, Christian: 9781795633901: Amazon.com: Books