Davāzdah Rokh[1] (Persian: دَوازدَه رُخ) (Twelve combats) is a story in Shahnameh. This relatively long story (almost 2,500 verses) is described as one of the finest stories of Shahnameh in terms of "plot, dramatic description, and insight into human nature".[1]
It takes place in the border of Iran and Turan, where a number of Iranian heroes fight with a number of Turanian heroes. In all cases, Iranian heroes defeat their Turanian competitors. Goudarz is the chief of Iranian heroes and Piran Viseh is the chief of Turanian heroes. The battle begins when Piran's brother, Houman, challenges the Iranians and is killed by Bizhan in a single combat. The two armies then fight together but the war has no winner. Finally they agree on pitched battles (mard o mard) between the heroes of the two army: