What is Sudoku?
How to play
Basic Techniques
More Advanced

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:

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