code: def mvp_gg(self):
          
          output = []
          for node in self.most_visited_path_nodes():
              if max(node.child_N) <= 1:
                  break
              output.append(coords.to_gtp(coords.from_flat(node.fmove)))
          return ' '.join(output)
docs: Returns most visited path in go-gui VAR format e.g. 'b r3 w c17...