private void Tick(object sender, TickEventArgs e)
{
//Clear and draw the space for the grid...
surf.Fill(grid.Rectangle, Color.Black);
grid.Update();
grid.Draw(surf);
//Clear and draw the space for the score board...
surf.Fill(board.Rectangle, Color.Black);
board.Update();
board.Draw(surf);
//Blit the grid and the board to the screen surface...
screen.Blit(surf, board.Rectangle);
screen.Blit(surf, grid.Rectangle);
screen.Update();
}