Extreme Sudoku #10857 | Peak Sudoku

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This puzzle

#10857

Extreme(85/100)
SE: 5.4
Clues: 25
Symmetry: Asymmetric

81 leftNo cell selected

1–9 writes into the selected cells.

Techniques in this puzzle8

Hidden Single Naked Single Pointing Triple Naked Pair Naked Quad Claiming Skyscraper Extended AIC

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Extreme Sudoku #10857 | Peak Sudoku