🔢 Sudoku
🎯Goal: Fill every empty square so each row, column, and 3×3
box contains 1 to 9 once.
👆How to play: Tap a square, then tap a number. Use Notes to
pencil in maybe-numbers.
⌨️Keyboard: Tab to the grid, move with the arrow keys, type
1–9 to fill a square, Backspace to clear it, and N to switch
Notes.
🏆Win: Complete the grid with no repeats.