Hard Sudoku #10504 | Peak Sudoku

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This puzzle

#10504

Hard(53/100)
SE: 3.4
Clues: 30
Symmetry: Vertical mirror

81 leftNo cell selected

1–9 writes into the selected cells.

Techniques in this puzzle3

Naked Single Hidden Single Hidden Pair

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Hard Sudoku #10504 | Peak Sudoku