1989 - Tunja, Colombia - (August 15 - August 31) - Due to the drug wars then raging in Colombia, some countries, including the British Chess Federation, boycotted the event. Vasil Spasov of Bulgaria was the surprise winner of the boys/open event, benefiting from a slip by his closest rival, Jacek Gdański of Poland. Gdanski managed to lose his last 2 games to throw away a 1½ point lead.