100 doors runaway level 71 : you need to put the ball base on 3 pattern clue, from left to right. first pattern : you need fill all circle with the ball.
second pattern : just put 4 ball, position is left-top, left-bottom, right-top and right bottom
third pattern : put 8 ball, position is left-middle, left-bottom, bottom-left, bottom-middle, top-middle, top-right, right-top, right-middle
and door will open