Find another Way

Clever and fun, particularly for a first upload.

Spoiler: Hiccup

The only issue I found was the limitation inherent with confined staircases. Sometimes it is not enough to keep only two spaces available above a stair block for B to pass easily. With a low overhead it is easier for B to go in one direction than the other. Often for the other direction the player must perform some fancy tapping to get B to pass. This makes the level unstable/unreliable and thus not as good of a quality design, hence my less-than-excellent rating.

Speaking of fancy tapping: Once you open a level up to requiring fancy tapping, you'll have less of an excuse when some juvenile players will want to break your level using other fancy tapping exploits. Although these inertia-based tricks are frowned upon, there are some players who just can't help themselves.

Welcome to the forum and thanks for sharing!