public void initialize(){
		rankList.clear();
		for(int i=0; i <Board.BOARD_SIZE; i++){
			Rank rank = new Rank();
			if(i == 1)
				rank.initializeWhitePawn();
			else if( i == 6)
				rank.initializeBlackPawn();
			else
				rank.initializeEmptyPawn();
			rankList.add(rank);
		}
		
	
	}