Diabolical Sudoku #17396 | Peak Sudoku

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#17396

Diabolical(93/100)
SE: 6.3
Clues: 30
Symmetry: 180° rotational

81 leftNo cell selected

1–9 writes into the selected cells.

Techniques in this puzzle6

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

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Diabolical Sudoku #17396 | Peak Sudoku