first click is a number

[umikali222]

I'm not sure if this is actually a rule in minesweeper, but it should, if the 1st click is a number, it shouldn't be. just like the 1st click being a mine. For example, you can see this happens a lot in this version, but in my implementation of minesweeper, you can see this never happens (granted this version is better in every other aspect).