.#.   . ##...     
    #..####.. ..  .   
 ## #.....#.#... ...  
 #.# #......#..#. .#  
 ##.##.......#.....#. 
 #.#.#..#....#∩.. ..# 
#.#................#  
#....#............#   
   #...x....##...# ## 
   #........##..##. . 
  #.#.....x.......... 
  #..#..........##.  #
 #.###...#..##........
 # ......#...#...# ...
   #.##.......  # ..#.
  ..# ..........#  .$.
  ..  ..##... ...   . 
     #.. #...#. ##   .
     ..  .. .....     
         ... ?. x