It also works with half pillars -- in fact any walkable 3-grid path with an uneven surface would do the job (the last grid has to be curved / going downwards). Though it's also interesting to note that the effect is the most consistent with B completely stabilized on the starting cylinder (but not so if he starts from a 4th block before the cylinder). Spoiler
Funny level, it takes a little until you realize about how to do it, but after that it's easy. Thank you!
