private boolean playerStartPositionsHasNoIdentityDisc(Grid grid) {
		List<IdentityDisc> identityDiscs = getIdentityDiscsOfGrid(grid);
		
		for (Player p : grid.getAllPlayersOnGrid())
			for (IdentityDisc idDisc : identityDiscs)
				if (grid.getElementPosition(idDisc).equals(p.getBeginPosition()))
					return false;
		
		return true;
	}