<prompt> Bhala ukuqhubeka kwalesi sigaba - Wanikezwa isihloko se-International Arbiter, wayeyi-Head Referee ku-23rd Chess Olympiad  <response>: , kanye ne-8th Womens Chess Olympiad, kokubili eBuenos Aires 1978. Wayephinde abe ngumahluleli oyinhloko emdlalweni we-World Chess Championship phakathi kuka-Anatoly Karpov noViktor Korchnoi eMerano ngo-1981. 