<prompt> Bhala ukuqhubeka kwalesi sigaba - UJürgen Dueball 17 April 1943 15 October 2002 wayengumdlali we-chess waseJalimane uMphathi Wamazwe Ngamazwe IM 1973, owawina indondo yethusi ye-Olympic Chess 1972  <response>: Izindaba 