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Killer Classic Sudoku 9 X 9 Ser.: 400 Classic Killer Sudoku 9 X 9 HARD + BONUS 250 Hidoku Puzzles : Sudoku with HARD Levels Puzzles and a Hidoku 9 X 9
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Sudoku and Large Size Puzzles: Adult puzzles. Big Samurai and Calcudoku 9x9 Sudoku. Extreme levels.: Very large font. 50% of characters are displayed ("+"; "-"; "x"; "/"). (Paperback) - Walmart.com
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