private void pictureBox1_MouseClick(object sender, MouseEventArgs e)
{
if (_mineField == null)
{
return;
}
pictureBox1.HandleFieldClick(e, _mineField, _chosenSkill);
_chosenSkill = Skills.None;
pictureBox1.DrawField(_mineField, _skin);
flagsLeftLabel.Text = _mineField.FlagsLeft.ToString();
_mineField.CheckGameState();
}