Maze House

Spoiler: Two solutions

1.- Push B against the roof with right draggable and after couole of times it will fall to the water. 2.- Push B's shoulder with right draggable so B will fall outside the building to the white area.

Anyone is the designed one? I didn't find other... Thanks!

Yep. Either of Spoilers will work ...

Spoiler

That's the slider you have to use to get B to the ground level.

I went round and round, up and down, back and forth, but could find no way to the win. So I took a step back and looked at it again. Then I saw what @chemi did and solved it in pretty much the same way. Did give B a good workout running up and down stairs and across walkways. It was a fun little workout ending with the big "oh, Duh" moment. I suspected that you enjoy those.