Sixty-four

Perhaps I am missing something obvious or so many levels played don't let me think simple...
If R goes down the stairs it gets stuck going down and up all the time, right?
By the way, we found then two different ways to solve in parallel to the designed one?

@chemi - i think we have 6 altogether, including your mounting solutions..

Spoiler: Solutions thus far

1. @Block builder's intended solution.
2. Popular B across the zapper solution.
   
3. @chemi's B on top of R solution.
4. @chemi's R on top of B solution.
5. @trids' scoop up B solution.
6. @trids' scoop up R solution.

Edit: updated list 2016-12-01

@trids if you read my first spoilers you will see some other solutions I found. Don't know if the same or not than yours...

It is incredible how such small level can offer so many options.

It's because of my lack of blocking other solutions and beta testing.

@trids Not sure if I am the first to use this. Also not sure if it really is a new trick. I would say it's a dynamic version of the claustrofobia trick.

Spoiler: Vs

https://m.youtube.com/shorts/F5BqcJHUDn4