private void button3_Click(object sender, EventArgs e)
{
if (!ValidateChildren()) return;
SimpleSudoku s = new SimpleSudoku();
s.StartPosition = FormStartPosition.CenterScreen;
s.ShowDialog();
s.timer.Stop();
if (s.Score == null) s.Score = "Unfinished";
scores.Add(new Score(KojaIgra.Sudoku,textBox1.Text.ToString(),s.Score));
}
