Abhimanyu knew the Chakravyuh

How would the Mahabharat be if Abhimanyu how to break the Chakravyuh? What if Karn didn't get the chance to kill Abhimanyu? What if Jayadrath's boon didn't work the way it should have? This is not real Mahabharat, it is just Fan Fiction. I don't mean to offend anyone's religion.