Diabolical Sudoku #462775 | Peak Sudoku

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This puzzle

#462775

Diabolical(97/100)
SE: 7.3
Clues: 27
Symmetry: Diagonal

81 leftNo cell selected

1–9 writes into the selected cells.

Techniques in this puzzle7

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

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Diabolical Sudoku #462775 | Peak Sudoku