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 2004 (18th) and Sofia Polgar (19th). Notably, this was the second Women's World Championship in a row in which the reigning champion (in this case Zhu Chen) did not attempt to defend their title. No fourth game was played, as Stefanova led with two points. Women's World Chess Championship 2004 The Women's World Chess Championship 2004 took place from May 21 to June 4, 2004 in Elista, Russia. It was won by Antoaneta Stefanova, who beat Ekaterina Kovalevskaya in the final by 2½ to ½. For the third time, the championship took the form of a 64-player knock-out tournament. Qualified players