;Level 2 - Rocks

 ###############    , Elements:
 #          O  #
 # OO       O$ #    ,  @ - player
 # O$O      OOO#    ,  # - wall (cannot be moved or destroyed)
 # OO   @  #####    ;  O - movable rock, you can push it
 # #############    ,  $ - gold
 #      O    $ #    ,  x - exit (you need to collect all gold to exit level)
 #     OxO     #
 ###############
