Diabolical Sudoku #10017 | Peak Sudoku

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This puzzle

#10017

Diabolical(97/100)
SE: 7.2
Clues: 32
Symmetry: Double mirror

81 leftNo cell selected

1–9 writes into the selected cells.

Techniques in this puzzle13

Hidden Single Naked Single Pointing Pair Claiming Naked Pair 2-String Kite Swordfish W-Wing Unique Rectangle Naked Triple XY-Wing Skyscraper XY-Chain

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Diabolical Sudoku #10017 | Peak Sudoku