The 2nd CF just checks that, for all values greater than the smallest
one, there's at least one number equal to that value - 1. So if there's
a 4, it checks that there's a 3. If there's not (and as long as 4 is not
the minimum number), it activates the conditional format.


In article ,
DTTODGG wrote:

Both examples work wonderfully. Can you explain the 2 CF1? I'm really trying
not only to get my tasks done (with your help) but actually learn about excel
as I go.