Compare checkbox with cell value
 

I have about 30 checkboxes in cells (which I have renamed to correspond with the checkbox in the cell, such as cell1,cell2... and so on). I have checkbox1 in cell1. I would like to limit the user to only one option. Either check the box or type something in the cell, but not both. I would like to have the cell protected if the corresponding checkbox is checked. Conversely, I would like to have the checkbox invisible if the cell has anything in it. Is this possible? I have worked on this for days and had no luck. Any help would be greatly appreciated. Thanks