Emergent Patterning 3

Start off with three 'knights' (that is, objects that can make a move like a knight piece in chess):

and run these through a 1024x1024 spiral and you get:

here's a zoom-in on the center:

Now I add a fourth object that can only move to one space:

and the result is:

again, here's a zoom-in on the center:

I change the 4th object just slightly:

and the result:

and then, as you might expect the next one to be:

next one:

and then finally:

zoomed in a little: