Lord Krishna, made this handicap known to Bhim of the Pandavas, who finally killed Duryodhana by simply beating his thighs to pulp with his mace; and, as legend has it, drinking his blood.....
And so it was all about knowing a persons susceptible points.
Achilles, had he known Duryodhana , would have probably understood all these happenings and even approved, so dramatic was his own birth history.
One abiding strain that runs through the Hindu and Greek mythology is the participation of Gods in routine human events. Where as in the Mahabharata, Gods have participated in a tricky advisory capacity, in the history of Achilles, Goddesses seem to be ruling the situation. In addition Gods routinely came down to participate in wars , intrigues and weddings on earth, sometimes interfering in things defying all logic.
Achilles was the son of a person called Peleus and a divine sea nymph called Thetis. One of the conditions of Achilles's parents' marriage (the union of a mortal with a divine sea nymph) was that the son born to them would die in war and bring great sadness to his mother. Thetis, was greatly ambitious and wanted Achilles to be immortal and invincible.
One version about how she tried that says that she smeared him with ambrosia and held him over the fire, to burn away his mortal properties , so to speak. Peleus, was properly aghast and he dragged the poor kid away. The father then put the young kid under the care of the Centaur Choron , who educated the boy.
The second version says that Thetia held Achilles upside down (by the heel), to get him to immerse in the sacred river Styx. It seems everything that the sacred water touched became immortal ; and poor Achilles was left with a mortal heel, where his mother had held him.
In the meanwhile, some Goddesses got interested . Eris, the Godess of discord (yes, there is such a department), got cheesed off as she was not invited to the Peleus-Thetis wedding. She landed up anyway, and angrily threw a golden apple into the proceedings, which a lot of other greedy goddesses reached out for. (It is amazing how the apple , a proletarian fruit, appears again and again in crisis situations, whether in gardens or weddings....).
In a set of steps that defy logic, one of the influential Gods, Zeus, landed up and said the judge would be Paris, the prince of Troy. The goddess who would be basically able to bribe Paris well, would win. Turns out , that one of the goddesses , promised this guy Paris, someone else's wife , called Helen. Both Paris and Helen were visions of beauty , and this completely arbitrary and irresponsible behaviour on the goddess's part makes you realise where todays powerful people get their ideas from.
Helen was actually married to Menelaus, King of Sparta. Paris set out on a so called polite visit to Sparta. Menelaus treated him with great honor, (similar to , say, how the Queen of England would treat, say, George Bush). Then the King went off to attend a funeral somewhere, which gave Paris an opportunity to run off with Helen, and take her to Troy. (Shame on you, Helen).
The entire Trojan War, was the result of all kinds of supporters of Menelaus getting together to fight Paris , attack Troy, and get back Helen. People made all kinds of predictions; a seer, some Calchas , said the war would be lost unless Achilles fought . Achilles mother, Thetis, then dressed him like a girl, and spirited him away to Scyros, another place, to keep him from being drafted into fighting a pointless war. While there he met Deidameia, and they had a son Neoptolemos. Various people with completely unpronounceable names like, Odysseus,Palamedes,Cinyras,Agamemnon, and others, managed to manoevre around , trick Achiiles into revealing his presence and get him to come and fight Paris at Troy.
Several customs come to light here. It was usual for someone to predict something arbitrarily, and suggest solutions if you did not want something to happen. The gullibility of the general population was shocking, but that of the rulers was just disgraceful. (It happens even today ...).
The solutions were mostly about sacrificing beautiful women at some altar, to appease , supposedly some God, but probably to satisfy someone's secret enimity with someone else. Sacrificing one's daughters was not uncommon.
The siege of Troy and the Torjan war lasted ten years, in which many folks died. Paris and Menelaus (stealer and husband respectively of Helen), fought a duel, and just when Paris was about to be killed, the Godess Aphrodite saved him. Guys called Cycnus, and Troilus, were killed by Achilles. In the ninth year of the war, one Agamemnon got into a fight with his colleague Achilles, and Achilles went off in a huff. With the best fighter having semi-retired , one of the Troy fighters called Hector had a dream run in the war, and became powerful. Achilles in the meanwhile had a bunch of affairs with, Patroclus, Troilus, Polyxena, daughter of Priam, Helen, and Medea, not all of them female. (How Helen appears in this list, simply boggles the mind. Guys, that was the end of the trojan war right there !) . But no. Agamemnon got panicky and begged of Achilles to return.
Kunti gave birth to Karan, the son fathered by the Sun god, before she married Pandav (her husband and father of her 3 kids), the other kids Nakul and Sahdev (twins) were born to Pandav\'s second wife Madri.
Duryodhana didn\'t try and disrobe Draupadi ... his younger brother (2nd in line), Dushasana did.