Extreme Sudoku #463556 | Peak Sudoku

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This puzzle

#463556

Extreme(85/100)
SE: 5.6
Clues: 29
Symmetry: Horizontal mirror

81 leftNo cell selected

1–9 writes into the selected cells.

Techniques in this puzzle8

Naked Single Hidden Single Claiming Naked Pair Naked Triple Pointing Triple Skyscraper BUG+1

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Extreme Sudoku #463556 | Peak Sudoku