private void box3MouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_box3MouseClicked
        if (b3 == 0) {
            box3.setForeground(Color.RED);
            box3.setText("X");
            b3 = 1;
            i++;
        }
        special_case();
        winx();
        AI_attack();
        AI();

// TODO add your handling code here:
    }//GEN-LAST:event_box3MouseClicked