Open Singles
An open single is the easiest way to fill in a cell in Sudoku.
It simply means there is a row, column, or block that is only missing one number.
Here are some examples:
![](/images/open_s.gif)
When only one number is missing, all you have to do is a little counting in your head, and boom! You've solved a cell.
![footer for open singles page](/imgs/FOOTER.gif)
|