World Chess Championship Topalov, and negotiations began for a Kramnik–Topalov match to unify the title. The FIDE World Chess Championship 2006 reunification match between Topalov and Kramnik was held in late 2006. After much controversy, it was won by Kramnik. Kramnik thus 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
Women's World Chess Championship 2018 (May) plan is to get back on schedule by holding a second Women's World Chess Championship 2018 (tournament), with the full 64 player knock-out in November, culminating with the final two players competing for the championship title. The event was held in Khanty-Mansiysk, Russia. Ju Wenjun entered the tournament as top rated player. Women's World Chess Championship 2018 (May) The 2018 Women's World Chess Championship Match was a match held between Tan Zhongyi, the 2017 Women's World Chess champion, and her challenger Ju Wenjun to determine the new women's world chess champion. Ju Wenjun qualified by winning the FIDE Women's Grand