Diabolical Sudoku #452392 | Peak Sudoku

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#452392

Diabolical(95/100)
SE: 7.1
Clues: 27
Symmetry: Vertical mirror

81 leftNo cell selected

1–9 writes into the selected cells.

Techniques in this puzzle7

Hidden Single Naked Single Pointing Pair Claiming Naked Triple XY-Wing ALS Chain

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Diabolical Sudoku #452392 | Peak Sudoku