conditionally format matchin values in row & range one row above & one below

I want to conditionally format the matching values of all the numbers in a row and in a range that is one row above and one row below because I have multiple rows with various types of values. How do I accomplish this?

There is an example what I want to do:
Cape.PNG
(I painted this by hand but I want to achieve this with conditional formatting)

You can probably use COUNTIF. You'd need two conditions, one to check the row below, and one to check the row above.

Fast answers need visual help. Please read the yellow banner at the top of this page on how to attach a file.

Or you could go with post #2 …

Select A1:D5 . Apply Cf.
Formula

=(COUNTIF($A1:$D2,A1)+IF(ROW()>1,COUNTIF(OFFSET($A1:$D1,-1,0),A1)))>1

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