This is in reference to the post here…
https://vexforum.com/t/answered-stack-prevention/45178/1
Most of the questions has been answered before… please see the links to the official rulings of most of the questions:
https://vexforum.com/index.php/28240-answered-sg5-sg6-and-stacked-note-2-question/0
In short, there is nothing illegal about preventing the opposing alliances in stacking. But you just can’t descore.