Diabolical Sudoku #450244 | Peak Sudoku

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81 leftNo cell selected

Puzzle: #450244
Difficulty: Diabolical(94/100)SE 6.6
Clues: 28
Symmetry: 180° rotational

1–9 writes into the selected cells.

Techniques in this puzzle7

Naked Single×9 Hidden Single×1 Pointing Pair×2 Claiming×1 Naked Triple×1 XY-Wing×1 XY-Chain×1

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Diabolical Sudoku #450244 | Peak Sudoku