A discourse of Swami Vivekananda on Mahabharata :
(Delivered at the Shakespeare Club, Pasadena, California, February 1, 1900)
Here is a glimpse of the nature of King Yudhishthira. We find by his answers that he was more of a philosopher, more of a Yogi, than a king.
Now, as the thirteenth year of the exile was drawing nigh, the Yaksha bade them go to Virâta's kingdom and live there in such disguises as they would think best.
So, after the term of the twelve years' exile had expired, they went to the kingdom of Virata in different disguises to spend the remaining one year in concealment, and entered into menial service in the king's household. Thus Yudhishthira became a Brâhmana courtier of the king, as one skilled in dice; Bhima was appointed a cook; Arjuna, dressed as a eunuch, was made a teacher of dancing and music to Uttarâ, the princess, and remained in the inner apartments of the king; Nakula became the keeper of the king's horses; and Sahadeva got the charge of the cows; and Draupadi, disguised as a waiting-woman, was also admitted into the queen's household. Thus concealing their identity the Pandava brothers safely spent a year, and the search of Duryodhana to find them out was of no avail. They were only discovered just when the year was out.
Then Yudhishthira sent an ambassador to Dhritarashtra and demanded that half of the kingdom should, as their share, be restored to them. But Duryodhana hated his cousins and would not consent to their legitimate demands. They were even willing to accept a single province, nay, even five villages. But the headstrong Duryodhana declared that he would not yield without fight even as much land as a needle's point would hold. Dhritarashtra pleaded again and again for peace, but all in vain. Krishna also went and tried to avert the impending war and death of kinsmen, so did the wise elders of the royal court; but all negotiations for a peaceful partition of the kingdom were futile. So, at last, preparations were made on both sides for war, and all the warlike nations took part in it.