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if ((label1.Text == "O") & (label2.Text == "O") & (label3.Text == "O") | ((label1.Text == "X") & (label2.Text == "X") & (label3.Text == "X")))
            {
                label1.ForeColor = Color.Red;
                label2.ForeColor = Color.Red;
                label3.ForeColor = Color.Red;
                win = false;
            }
            if ((label4.Text == "O") & (label5.Text == "O") & (label6.Text == "O") | ((label4.Text == "X") & (label5.Text == "X") & (label6.Text == "X")))
            {
                label4.ForeColor = Color.Red;
                label5.ForeColor = Color.Red;
                label6.ForeColor = Color.Red;
                win = false;
            }
            if ((label7.Text == "O") & (label8.Text == "O") & (label9.Text == "O") | ((label7.Text == "X") & (label8.Text == "X") & (label9.Text == "X")))
            {
                label4.ForeColor = Color.Red;
                label5.ForeColor = Color.Red;
                label6.ForeColor = Color.Red;
                win = false;
            }
            if ((label1.Text == "O") & (label4.Text == "O") & (label7.Text == "O") | ((label1.Text == "X") & (label4.Text == "X") & (label7.Text == "X")))
            {
                label1.ForeColor = Color.Red;
                label4.ForeColor = Color.Red;
                label7.ForeColor = Color.Red;
                win = false;
            }
            if ((label2.Text == "O") & (label5.Text == "O") & (label8.Text == "O") | ((label2.Text == "X") & (label5.Text == "X") & (label8.Text == "X")))
            {
                label2.ForeColor = Color.Red;
                label5.ForeColor = Color.Red;
                label8.ForeColor = Color.Red;
                win = false;
            }
            if ((label3.Text == "O") & (label6.Text == "O") & (label9.Text == "O") | ((label3.Text == "X") & (label6.Text == "X") & (label9.Text == "X")))
            {
                label3.ForeColor = Color.Red;
                label6.ForeColor = Color.Red;
                label9.ForeColor = Color.Red;
                win = false;
            }
            if ((label1.Text == "O") & (label5.Text == "O") & (label9.Text == "O") | ((label1.Text == "X") & (label5.Text == "X") & (label9.Text == "X")))
            {
                label1.ForeColor = Color.Red;
                label5.ForeColor = Color.Red;
                label9.ForeColor = Color.Red;
                win = false;
            }
            if ((label3.Text == "O") & (label5.Text == "O") & (label7.Text == "O") | ((label3.Text == "X") & (label5.Text == "X") & (label7.Text == "X")))
            {
                label3.ForeColor = Color.Red;
                label5.ForeColor = Color.Red;
                label7.ForeColor = Color.Red;
                win = false;
            }
        }

        private void label7_MouseDown(object sender, MouseEventArgs e)
        {
            if (win)
                for (int i = 0; i < 1; i++)
                {
                    if (label7.Text == "")
                    {
                        label7.Text = "X";

                        if ((label1.Text == "O") & (label2.Text == "O") & (label3.Text == ""))
                        {
                            label3.Text = "O"; break;
                        }
                        if ((label1.Text == "O") & (label2.Text == "") & (label3.Text == "O"))
                        {
                            label2.Text = "O"; break;
                        }
                        if ((label1.Text == "") & (label2.Text == "O") & (label3.Text == "O"))
                        {
                            label1.Text = "O"; break;
                        }