Play Tutorial Stats

Hard Sudoku

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Keyboard Shortcuts

`1` – `9`	Enter a digit
`0` / `Del`	Clear cell
`↑ ↓ ← →`	Move selection
`N`	Toggle notes mode
`Z` / `Ctrl Z`	Undo
`P`	Pause / Resume
`H`	Hint
`?`	Toggle this overlay
`Esc`	Deselect cell / Close

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