Expert Sudoku #218315 | Peak Sudoku

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81 leftNo cell selected

Puzzle: #218315
Difficulty: Expert(73/100)SE 4.5
Clues: 25
Symmetry: Vertical mirror

1–9 writes into the selected cells.

Techniques in this puzzle7

Naked Single×11 Hidden Single×2 Pointing Pair×2 Claiming×1 Naked Pair×1 Naked Triple×1 XY-Chain×1

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Expert Sudoku #218315 | Peak Sudoku