Suleiman fought neighbouring rulers and expanded the territories of the Sultanate. In 1201, he conquered Erzurum, giving it as a fief to Mughith al-Din Tugrulshah in 1202.[3] Successful in the wars with the Byzantines, Suleiman was routed by the Georgians in the Battle of Basian of 1203.[4]
Suleiman was succeeded by his son Kilij Arslan III in 1204–1205,[5] after which Kaykhusraw I forced his way into Konya, removed Kilij from power and was enthroned for a second time.[5]