Dims = (11,9)
layout = <<EOF
 X XX   X  
   X  XX X 
X  X X X   
 XX XX  XX 
 X  X  X   
   X  XX X 
  XXX   X G
 X X X  XX 
 X  X X  X 
EOF
Planks = [ ((0,2) -> (3,2)) , ((6,5)->(7,5)), ((4,8) -> (6,8)) ]

