public void SaveBoard()
    {
        // check if the board is filled when user presses save.
        for (int i = 0; i < boards.Length; i++)
        {
            for (int j = 0; j < PlayerStats.Boards[i].cards.Length; j++)
            {
                if (PlayerStats.Boards[i].cards[j].GetComponent <Image>().sprite.name == blankName)
                {
                    PlayerStats.Boards[i].isFull = false;
                }
            }
        }
        string filename = "Board" + (currBoard + 1) + ".sav";

        SaveLoadController.SaveBoards(PlayerStats.Boards);
    }