<prompt> Nyorai kuenderera mberi kwechikamu chino - Donovan van den Heever akazvarwa muna 1981 mutambi wechess wekuSouth Africa. Akava International Master muna 2014, akakunda South African Chess Championship mugore rimwe chetero uye akamiririra South Africa kuChess Olympiad, kusanganisira 2006, 2010, 2014, 2016 uye 2018  <response>: . 