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:
- In pencil mode, Hold Shift + number: instantly fills a digit.
- In digit mode, Hold Shift + number: instantly places a pencil note.
- Key ` (left of 1): to toggle pencil marks on and off
- Key X: turn on pencil marks
- Key C: turn off pencil marks (back to digit mode)
- Number keys (1–9) and Numpad: enter a digit or pencil note
- Arrow keys (↑ ↓ → ←): move the active cell
- Key - (minus): Undo (also Ctrl + Z)
- Key = (equal): Hint
- Key Backspace: Clear cell

What’s New:
- [v1.0.8] Hold Shift + number to instantly enter a digit or pencil note without switching modes.

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