Wait please up to all pieces are loaded. Then select, which kind of puzzle you want to put together: Jump-puzzle: every piece can jump to the free place (this is really easy - ok, this is hard enough), Slide-Puzzle: only the four neighbour pieces can be moved to the free place (this is harder - ok, it's a provocation).
One helpfull advice: the missing piece (free place) is the right lower edge.
 
Jump-Puzzle or Slide-Puzzle ?
 

 

puzzle

puzzle picture

home