public boolean duplicateEntrySection(int x, int y, String entry) {
		
		boolean duplicate = false;
		int sx = (x/size)*size, sy = (y/size)*size;
		for (int i=sx; i < sx+size && !duplicate; i++) {
			for (int j=sy; j < sy+size && !duplicate; j++) {
				duplicate = (sudokuGrid[i][j].equals(entry) ? true : false);
			}
		}
		
		return duplicate;
	}