World Chess Championship a Kasparov match, either with 2002 FIDE champion Ponomariov, or 2004 FIDE champion Kasimdzhanov. Partly due to his frustration at the situation, Kasparov retired from chess in 2005, still ranked No. 1 in the world. Soon after, FIDE dropped the short knockout format for a World Championship and announced the FIDE World Chess Championship 2005, a double round robin tournament to be held in San Luis, Argentina between eight of the leading players in the world. However Kramnik insisted that his title be decided in a match, and declined to participate. The tournament was convincingly won by the Bulgarian Veselin
World Chess Championship 2010 Champion title once again. World Chess Championship 2010 The World Chess Championship 2010 match pitted the defending world champion, Viswanathan Anand, against challenger Veselin Topalov, for the title of World Chess Champion. The match took place in Sofia, Bulgaria from 24 April to 13 May 2010, with a prize fund of million euros (60% to the winner). Anand won the final game to win the match 6½–5½ and retain the title. The match was to be twelve games, with tie-breaks if necessary, the same format and length as the 2006 and 2008 matches. In early 2006, FIDE announced that the