alternatehistory.com

Following a string of victories against the Ottomans, the Serbian insurgents sent Petar Ičko as their envoy to the Sublime Porte. Following some negotiations, Ičko managed to convince them to give the Serbs some favorable concessions, which we know as Ičko's Peace. However, the Russians convinced the Serbs to reject the treaty and continue the Uprising, whilst joining the former in their war against the Ottomans.

A few years into the war, the Russians were only giving them some token support, as the Serbs mainly served to occupy the Ottomans while they fought in Moldavia. Eventually, the Serbs would lose initiative in the war with the loss at the Battle of Čegar, as a result of Petar Dobrnjac and Miloje Petrović entering in a strife, leading to them being unable to support Stevan Sinđelić and his men in the battle.

Now: 1) what if the Serbs chose to go with Ičko's Peace rather than allying with Russia; 2) if they chose to ally with Russia, what if Petar Dobrnjac and Miloje Petrović hadn't entered in a strife, leading to a victory at the Battle of Čegar?
Top