Diabolical Sudoku #20215 | Peak Sudoku

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81 leftNo cell selected

Puzzle: #20215
Difficulty: Diabolical(91/100)SE 6.3
Clues: 25
Symmetry: 180° rotational

1–9 writes into the selected cells.

Techniques in this puzzle7

Naked Single×11 Hidden Single×2 Pointing Pair×3 Claiming×1 Naked Pair×1 Naked Quad×1 Discontinuous Nice Loop×1

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Diabolical Sudoku #20215 | Peak Sudoku