In Eastern Anatolia the Russians have been trying to advance from Manzikert against the Turks. Unfortunately the Russians are over-extended and are unable to make headway against their enemies. Worse, the Turks have brought reinforcement into the area: the Russians are attacking forces that greatly outnumbers them.
Now the Turks seize the moment and counter-attack. The stretched Russians are unable to hold back the Ottomans. They are thrown back in considerable disorder.