Anand is a five-time world chess champion. He defeated Alexei Shirov in a six-game match to win the 2000 FIDE World Chess Championship, a title he held until 2002. He became the undisputed world champion in 2007, and defended his title against Vladimir Kramnik in 2008, Veselin Topalov in 2010, and Boris Gelfand in 2012. In 2013, he lost the title to challenger Magnus Carlsen, and he lost a rematch to Carlsen in 2014 after winning the 2014 Candidates Tournament.