Spent ages looking at this a little while ago, couldn't make any sense of it. Came back to it today with a fresh eye and got it in just a few tries. Pretty cool level.
Great small level. It took me a few minutes to tell what I needed to do. Now that I think of it, it's amazing to consider how after almost two decades, the game still has potential to explore new and challenging ideas in these small levels. 4 tries.