Dudley's dungeon

     ------         
     |..f<|         
     ...@.|         
     |....|         
     ------         
                    
                    
                    
                    

             #      
             #      
   ----.-----#      
   |.....f..|#      
   |........-#      
   |.....@..|       
   |........|       
   |....$...|       
   ----------       

                    
     ---------      
     -$_.b.b.|      
      bb.b...|      
     |.bbb.@.|      
     ------f--      
           #        
           #        
           #