public overloads readonly property chars(index as integer) visual basic

Question

    Public Sub boards()
        board = {{1, 0, 1, 0, 1, 0, 1, 0},
                {0, 1, 0, 1, 0, 1, 0, 1},
                {0, 0, 0, 0, 0, 0, 0, 0},