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
World Chess Championship 2007 World Chess Championship 2007 The World Chess Championship 2007 was held in Mexico City, from 12 September 2007 to 30 September 2007 to decide the world champion in the board game chess. It was an eight-player, double round robin tournament. Viswanathan Anand of India won the tournament and the title of World Chess Champion. His winning score was 9 points out of 14, with a total of four wins and 10 draws, and Anand was the only undefeated player in the tournament. This championship was unusual in that the World Chess Championship was decided by a tournament rather than a