int[,] grd = {{ 2, 0, 6, 8, 7, 0, 0, 0, 0 },
             { 0, 0, 9, 4, 1, 0, 0, 2, 3 },
             { 0, 1, 0, 0, 0, 0, 0, 5, 6 },
             { 0, 0, 5, 0, 4, 0, 0, 7, 8 },
             { 7, 6, 0, 0, 8, 9, 4, 1, 0 },
             { 0, 8, 0, 6, 0, 0, 0, 0, 0 },
             { 0, 9, 0, 0, 0, 8, 0, 6, 4 },
             { 8, 0, 0, 5, 0, 0, 1, 0, 2 },
             { 0, 5, 2, 1, 9, 0, 0, 0, 0 }};

string unprocesed_nums = Console.ReadLine();
string[] split_nums = unprocesed_nums.Split(' ');
List<int> nums_list = new List<int>();
int nums;
foreach (string s in split_nums)
{
    if (Int32.TryParse(s, out nums))
    nums_list.Add(nums);
 }
    int[] board = nums_list.ToArray();