Expert Sudoku #174040 | Peak Sudoku

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81 leftNo cell selected

Puzzle: #174040
Difficulty: Expert(74/100)SE 4.3
Clues: 28
Symmetry: 180° rotational

1–9 writes into the selected cells.

Techniques in this puzzle7

Naked Single×6 Hidden Single×3 Pointing Triple×1 Claiming×1 Naked Pair×1 Naked Triple×1 W-Wing×1

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Expert Sudoku #174040 | Peak Sudoku