Duel 2 is far closer than any duel in four rounds for Solaris. After 2574 rounds, taking significant damage, having real concern, and being hindered in several ways, Solaris pulls out a victory not at all in the way he thought he would have to win.
That said, Solaris moves on to 4-0 and Tchau drops to 2-1-1. Both live to fight in round 5.