..  . ##..#.#.
      .##.#... # #
      # .....##..#
      .?..  ..# .z
 .      ##.... z# 
 #.##   #.#.... ..
  ...#####.#.# ###
   .#...#....#    
   #.#.#..#z.#    
    #......##..   
    #.##...# ....#
    #...#.##  #. .
###...#..#.#   #.#
.....##..###    #.
........z#∩#     #
....#.#...#       
.. ...#.##.....#  
 #.5...#. #.#.... 
...##.. .  .#  #. 
[.. #.# ..  .     
..  ..  ..  .#    
   ##.  ...  #