Spoiler: Trick List - auto pilot (tap and move slider to redirect B) - long legs slide (Both B and R get long legs going up stairs, if slid, then both B and R will be taller) Spoiler: Video Solution
My solution very similar to caption. Spent a few minutes with the stack on the step next to wedge but despite bobbing unable to get the win. So it was in hope rather than expectation that i tried the winning move as depicted in the caption.