In what year did the army of Inca Emperor Manco Inca Yupanqui begin a 10-month siege of Cuzco against a garrison of Spanish conquistadors and Indian auxiliaries led by Hernando Pizarro?

In what year did the army of Inca Emperor Manco Inca Yupanqui begin a 10-month siege of Cuzco against a garrison of Spanish conquistadors and Indian auxiliaries led by Hernando Pizarro?
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