The Duel on the Platform was a duel fought between Darth Barad-Dur and Darth Marix during Barad-Dur's training. The duel took place on Yavin IV. The duel was set up by Darth Barad-Dur's master, Darth Lithium, to see if he was ready to advance onto a grand scale duel to knight Darth Barad-Dur.