Ok, but you still need to point to player that branches in the road in this puzzle are ok, and in fact encouraged. After first two levels I thought this game is gonna be a bit like 'cosmic express', where the objective is to make the road pass through all the points (with bonus points for making it longer in your case). For me, the "minimum points is 22" was enough to realize that I have totally change my way of thinking. That was cool, because this wasn't straightforward hint, but led me in the right direction.