When did Sumanguru capture the city of Kumbi?
Empire Building. He defeated Sumanguru at the Battle of Kirina in 1235, and by 1240 he had captured Kumbi Saleh, capital city of the old Empire of Ghana.
Also asked, how did Sundiata defeat Sumanguru?
Sundiata defeated the Soso in what would later be known as the Battle of Kirina. Legend has it that Sundiata killed the Soso King, Sumanguru, with a poisoned arrow. After defeating the Soso at the Battle of Kirina, Sundiata marched on the Soso kingdom and took total control.