Ottokar was forced to surrender and to renounce all his acquisitions , receiving only Bohemia and Moravia as a fief from King Rudolph .
Rudolph , so strengthened , besieged Ottokar at the Austrian capital Vienna in 1276 .
Ottokar was forced to surrender and to renounce all Ottokar 's acquisitions , receiving only Bohemia and Moravia as a fief Rudolph   Rudolph .
Rudolph , so strengthened , besieged Ottokar at the Austrian capital Vienna in 1276 .