Tough Sudoku #150455 | Peak Sudoku

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81 leftNo cell selected

Puzzle: #150455
Difficulty: Tough(67/100)SE 4
Clues: 28
Symmetry: 180° rotational

1–9 writes into the selected cells.

Techniques in this puzzle7

Naked Single×9 Hidden Single×4 Pointing Triple×1 Claiming×1 Naked Pair×1 Naked Triple×1 Skyscraper×1

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Tough Sudoku #150455 | Peak Sudoku