<prompt> Bhala ukuqhubeka kwalesi sigaba - URudy Douven owazalwa ngo-5 Meyi 1961, ungumdlali we-chess waseNetherlands International Master IM 1986, owawina i-Dutch Chess Championship 1988, owawina indondo yethusi yeqembu le-Chess Olympiad 1988  <response>: Izindaba 