Extreme Sudoku #464870 | Peak Sudoku

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This puzzle

#464870

Extreme(85/100)
SE: 5.5
Clues: 34
Symmetry: Double mirror

81 leftNo cell selected

1–9 writes into the selected cells.

Techniques in this puzzle9

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

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Extreme Sudoku #464870 | Peak Sudoku