Tough Sudoku #336499 | Peak Sudoku

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81 leftNo cell selected

Puzzle: #336499
Difficulty: Tough(61/100)SE 3.8
Clues: 30
Symmetry: Vertical mirror

1–9 writes into the selected cells.

Techniques in this puzzle4

Naked Single×11 Hidden Single×3 Claiming×1 Skyscraper×1

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Tough Sudoku #336499 | Peak Sudoku