Too little game play. Get R on Z and go to the win.... The trick was doing it in a stable manner which I did.
... Spoiler: Z on R set R n Z side by side together at horizontal slider, put R in line and facing the double stairs. when R's legs are streching, quick slide dragable to under stairs then pull it back quickly, let Z walk to R's previous stand on dragable, then quick slide again untill Z is ontop of R
