Tower

Nice logic level. I did have troubles with one section (a quick slide) but I don't think I was doing it as intended and then I found the clean way. I'll finish via conversation.

Excellent clean logic level with super nice design ... thanks @Baba great job!

What they ^ said. Great level. You don't need P towards the end btw, as you can slide B up a level with the slider. But that is not as clean as the intended solution, which I like.

i won with leaving 1 ball
is red herring
or a shortcut

Thanks for PC and R, @Meko Guy @delator77 @Block builder @BangTe as discussed in the comments, the shortcut at the end without P leaves 1 ball