public boolean isPlaceFree(Coordinate c, Piece p)
{
	boolean free = false;

	Iterator<Coordinate> ite = p.getAbsoluteCells(c).iterator();

	while(ite.hasNext())
	{
	if(this.gameboard.get(ite.next()) == null && !this.gameboard.get(ite.next()).isFixed())
		free = true;
	}
	return free;
}