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Yeah, that Sudoku puzzle has multiple valid solutions, whereas the page only seems to accept a single one.
by EdSchouten 3mo ago
Yeah, that Sudoku puzzle has multiple valid solutions, whereas the page only seems to accept a single one.
- rmunn 3mo agoThere's an extra constraint on that one: the two main diagonals must both have nine different digits. That's what makes it a single-solution puzzle.