description
or the most extreme solvers! But if you dare, grab a pen and take on these two hundred all-new extra challenging puzzles in Will Shortz Presents Black Diamond Sudoku. Features:
- 200 hard puzzles
- Big grids for easy solving
- Introduction by legendary puzzlemaster Will Shortz
- 200 hard puzzles
- Big grids for easy solving
- Introduction by legendary puzzlemaster Will Shortz
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