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The Hardest Sudoku in the World
- tromp 3y ago> Despite having less pre-filled suares, our Hard sudokus aren't harder than Arto's puzzle since they have more than one solution, which makes them significantly easier to solve than sudoku puzzles that have a single solution. I would say that makes them invalid. Valid sudoku puzzles should have unique solutions.
- peapicker 3y agoI agree. And running Arto's puzzle thru a solver, it has more than 10 solutions, so they lied about that too.