100 Doors 2013 Level 21 Walkthrough

a long black wire around the door
100-doors-2013-level-21
hint : follow the arrow, the green lift button is where you start

door 21 solution :
slide door to direction of the arrows start from the bottom left
100-doors-2013-door-21
answer : slide the door to left, right down, up, left, right, down
move on to the next stage