Family overlapping two times

Please stay with me because this will not be an easy question.

I have X rows of 3 sprites (repeating each row in a different order). Those sprites are part of a family. I need to check that they are each in its right column.

Family overlapping with boundary

sprite1.x = 10

sprite2.x = 20

sprite3.x = 30

You get points

Destroy Family

----else

You lose points

Destroy Family

All works, the problem is that the event fire 2 times before the row gets destroyed how can I avoid this?

Thank you for any help