A map I made recently, one where Anatolia is divided between an Ottoman west and a Karaman east, got me thinking, how could this happen?
Your challenge, should you accept it, is to have Anatolia divided in such a way. The Ottomans rule Western Anatolia, the Balkans and the Black Sea coast. The Karamans rule Eastern Anatolia along with the Middle East and Egypt. How can this come about?
The POD is up to you.