Tough Sudoku #10861 | Peak Sudoku

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This puzzle

#10861

Tough(70/100)
SE: 4.1
Clues: 35
Symmetry: Asymmetric

81 leftNo cell selected

1–9 writes into the selected cells.

Techniques in this puzzle9

Naked Single Hidden Single Pointing Pair Claiming XY-Wing XYZ-Wing Finned X-Wing Extended AIC Skyscraper

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Tough Sudoku #10861 | Peak Sudoku