Extreme Sudoku #455822 | Peak Sudoku

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This puzzle

#455822

Extreme(84/100)
SE: 5.5
Clues: 31
Symmetry: Vertical mirror

81 leftNo cell selected

1–9 writes into the selected cells.

Techniques in this puzzle6

Naked Single Hidden Single Pointing Pair Claiming XY-Wing BUG+1

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Extreme Sudoku #455822 | Peak Sudoku