Unique check-boxes for more than 2 colomns

Hey guys, quick question regarding the check-boxes in Excel.

How i can create an unique selection for example between 3 columns using the TRUE and FALSE cell link?
When you have 2 columns and you need to select only one , it's simple to use the NOT formula with the one of the cell links, but form more than 2?

I've attached a demo - same with my problem maybe you guys can illuminate me.

Thanks,
Alex

Solved using vba idea with the following code :

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+ Added the sample with it