private static void updatePoss(List<List<List<Integer>>> poss, Board b) {
		poss.clear();
		for (int x = 0; x < 9; x++) {
			List<List<Integer>> list = new ArrayList<List<Integer>>();
			for (int y = 0; y < 9; y++) {
				List<Integer> list1 = new ArrayList<Integer>();
				if (b.get(x, y) != 0) {
					list1.add(b.get(x, y));
				} else {
					list1 = findPoss(b, x, y);
				}
				list.add(list1);
			}
			poss.add(list);
		}
		for (int x = 0; x < 9; x++) {
			for (int y = 0; y < 9; y++) {
				System.out.println(x + "," + y + ": " + poss.get(x).get(y));
			}
		}
	}