private void Button0_Click(object sender, EventArgs e)
{
numb.Text = clik.ToString();
int position = Convert.ToInt16(((Button)sender).Tag);
game.Change(position, ref clik);
game.Shift(position);
refresh();
if (game.Check_Numbers())
{
on = true;
Close();
/*MessageBox.Show("Victory");
* start_game();*/
}
// MessageBox.Show(position.ToString());
}