Moving screen?

[Mark Dexter]

Originally posted by Dan_ref

I think I'm havng trouble seeng how standing in someone's
path could be an illegal position? It's a nit, but it's
not the position that is illegal, it's whatever contact
results from having not attained legal guarding position.
But you've already made this point..

It comes from the fact that standing is not the illegal act.

Let me attempt to re-write this:

B1 is in (or will be in) a position such that, if there were contact with A1, B1 would be charged with a foul. If A1 changes his path and there is no contact, there is no foul on B1 for forcing A1 to change his path.