List Method

/// <summary>
        /// returns state of pole in List<List<int>>
        /// </summary>
        /// <returns></returns>
        public List<List<int>> GetMassive()
        {
            List<List<int>> x = new List<List<int>>(9);
            for (int i = 0; i < Length; i++)
            {
                x[i] = new List<int>(9);
                for (int j = 0; j < Length; j++)
                    x[i][j] = arr[i, j];
            }

            return x;
        }