It goes that, Abhimanyu knew how to enter the Chakravyuh but he did not know how to exit from the formation. It was created by Guru Drona to capture the king of Pandavas Yudhishtra as said in the great epic Ma… This leaves Abhimanyu to break the Chakravyuh. Abhimanyu gladly accepts to help the Pandavas break the Chakravyuh but he also makes it known to them that his knowledge is limited to breaking in and didn't know how to exit.
Danveer Karna - दानवीर कर्ण - The Rise and Fall of a Great Archer - Hindi Animated Story 1/9 - Duration: 8:41. Abhimanyu, who knew how to break the formation and go inside but did not know how to break out of it, voluntarily entered the Chakravyuh in order to save Yudishtira. Lot of people know how to go deep into the subject, unravelling the mysteries in modern science, with brilliant and dynamic intellect, uncovering the mysteries of the nature, by going deeper and deeper. As promised, Abhimanyu enters the Chkravyuh followed by his kinsman.

Jayadratha lures Arjuna away from the battlefield. Ultra Kids Zone 232,555 views 8:41 However Abhimanyu, the brave son of Arjun, ensured Yudhisthir that he could break into the chakravyuh and create an opening for the rest of the Pandavas.
Abhimanyu’s greatest virtue lies in his determination to fight even against certain death. He was brave enough to enter the “Chakravyuh” but did not know his way out which ultimately led to his death. This is the story of The Great warrior,The Great son,The Legend Abhimanyu...He is one of The Brave Warrior Among Pandavas.

Chakravayuha is a battle formation from the ancient times. However, mostly people don’t know how to come back. And Dhronacharya did not know that. Abhimanyu, who knew how to break the formation and go inside but did not know how to break out of it, voluntarily entered the Chakravyuh in order to save Yudishtira. Abhimanyu’s greatest virtue lies in his determination to fight even against certain death. Human cannot keep quiet and dig the traps for themselves in the process. The only problem was that he did not know how to get out of the chakravyuh. The other Pandava brother – Arjuna and their aide Krishna (who knew how to break in to the Chakravyuh and break out of it) were purposefully drawn in to a separate battle with the Samsaptakas. Lord Krishna taught us the art of patience.