Development of the World Chess Championship five incredibly close world championship matches, the World Chess Championship 1984 (controversially terminated without result with Karpov leading +5 -3 =40), World Chess Championship 1985 (in which Kasparov won the title, 13–11), World Chess Championship 1986 (narrowly won by Kasparov, 12½–11½), World Chess Championship 1987 (drawn 12–12, Kasparov retaining the title), and World Chess Championship 1990 (again narrowly won by Kasparov, 12½–11½). In 1993, Kasparov and challenger Nigel Short complained of corruption and a lack of professionalism within FIDE and split from FIDE to set up the Professional Chess Association (PCA), under whose auspices they held their match. FIDE and
Women's World Chess Championship 1986 point, earning the right to challenge the reigning champion for the title. The championship match was played in Sofia in 1986. Once again, defending champion Chiburdanidze had no real problems. She beat challenger Akhmilovskaya with a comfortable margin of three points and retained her title. Women's World Chess Championship 1986 The 1986 Women's World Chess Championship was won by Maia Chiburdanidze, who successfully defended her title against challenger Elena Akhmilovskaya. As part of the qualification process, two Interzonal tournaments were held in June 1985, one in Havana and the other in Zeleznovodsk, featuring the best players from each FIDE zone.