Don’t stack block until after you move the desired block to the right one space. Using down block above pillar you can make a bridge that allows you to get to the block and have one empty space to push the TWO blocks right. THEN go back and stack blocks on the spring to move them out.
Ah, so simple. I thought of that thing with the down block as one of the parts of the bridge to the right block, but I was having issues thinking of a way to get over there.
