Circus

Nice ability level, thanks!

@nGord I found a consistent way to save B. In fact, I think the technique was already used somewhere else in the past and it is just ability, not exploit used. Of course, I can't confirm it was the designed solution...

^^
Was intended to be like that

Spoiler

When the zapper is facing the stairs tap towards them, then immediately back in the opposite direction. Puts enough distance to avoid getting zapped. From there, just walk B to a safe distance and wait for zapper R to wander off.

Here's how I solved it.

Great challenge in a minimal world.

This level can be finished without the stairs.

Spoiler

Tap like this:
1. On the square in front of B.
2. On the square where he came from.
3. Same square as 1.
Then you have moved B 1 square without R falling off. You need the correct rhythm though. I'd estimate about half a second between 1 and 3. Basically you let B move effectively more slowly such that R can stay on. Do this twice, and R steps on the win.

Nice challenge. I got zapped a couple of times until I made it.

Curious