Development of the World Chess Championship became the first unified and undisputed World Chess Champion since Kasparov split from FIDE to form the PCA in 1993. Kramnik played to defend his title at the World Chess Championship 2007 in Mexico. This was an 8-player double round robin tournament, the same format as was used for the FIDE World Chess Championship 2005. This tournament was won by Viswanathan Anand. Because Anand's World Chess Champion title was won in a tournament rather than a match, a minority of commentators questioned the validity of his title. Kramnik also made ambiguous comments about the value of Anand's title, but did
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