Maze a04

http://areamaze.com/m/a04

4201630?

{:rects {[0 1] {[0 1] 20, [1 2] 16}, [1 2] {[0 1] 30, [1 2] nil}},
 :edges {:y {[1 2] 4}},
 :target {:type :rect, :x [1 2], :y [1 2]}}