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Pages: 224, Paperback, Independently published
Independently Published
Hard Difficulty 12x12 Sudoku 400 Giant Grid Expert Challenges: Puzzles for Advanced...
Classic Sudoku Puzzles: Hard Challenge: The Ultimate Brain Workout: Killer Grids for...
Sudoku: The Expert’s Grids: 200 Advanced Puzzles in 12x12 and 16x16 Grids
Sudoku: The Expert’s Grids: 200 More Advanced Puzzles in 12x12 and 16x16 Grids
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