Extreme Sudoku #463621 | Peak Sudoku

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This puzzle

#463621

Extreme(87/100)
SE: 5.6
Clues: 26
Symmetry: 180° rotational

81 leftNo cell selected

1–9 writes into the selected cells.

Techniques in this puzzle7

Naked Single Hidden Single Pointing Pair Claiming Naked Triple XYZ-Wing BUG+1

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Extreme Sudoku #463621 | Peak Sudoku