Goen Sudoku Shortcuts

Play Sudoku easier and faster with your keyboard! Could Sudoku.com become the best Sudoku website with keyboard shortcuts for pencil marks?

Shortcuts:
- Hold Shift and press number keys: to place a number as a pencil note (use Shift shortcut for pencil marks)
- Key ` (the key is on the left of key number 1): to toggle pencil marks on and off
- Arrow keys (↑ ↓ → ←): to move the current cursor (active cell).
- Number keys (1 to 9): to place a number. (use Alt shortcut for Digits mode)
- Key - (underscore): to Undo (also use Ctrl + Z)
- Key = (equal): to display Hint
- Key Backspace: to clear (Erease)
- Key X: turn on pencil marks (Notes mode)
- Key C: turn off pencil marks (Digits mode)

What’s New:
- [v1.0.5] Support Numpad
- [v1.0.6] Improve UX of pencil marks, add game tips.

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