World Chess Championship

The World Chess Championship is played to determine the world champion in chess. The current world champion is Gukesh Dommaraju, who defeated the previous champion Ding Liren in the 2024 World Chess Championship.

The first event recognized as a world championship was the 1886 match between Wilhelm Steinitz and Johannes Zukertort. Steinitz won, making him the first world champion. From 1886 to 1946, the champion set the terms, requiring any challenger to raise a sizable stake and defeat the champion in a match in order to become the new world champion. Following the death of reigning world champion Alexander Alekhine in 1946, the International Chess Federation (FIDE) took over administration of the World Championship, beginning with the 1948 tournament. From 1948 to 1993, FIDE organized a set of tournaments and matches to choose a new challenger for the world championship match, which was held every three years.

Before the 1993 match, then reigning champion Garry Kasparov and his championship rival Nigel Short broke away from FIDE, and conducted the match under the umbrella of the newly formed Professional Chess Association. FIDE conducted its own tournament, which was won by Anatoly Karpov, and led to a rival claimant to the title of World Champion for the next thirteen years until 2006. The titles were unified at the World Chess Championship 2006, and all the subsequent tournaments and matches have once again been administered by FIDE. Since 2014, the championship has settled on a two-year cycle, with championship matches conducted every even year.

Emanuel Lasker was the longest serving World Champion, having held the title for 27 years, and holds the record for the most Championship wins with six along with Kasparov and Karpov.

Though the world championship is open to all players, there are separate championships for women, under-20s and lower age groups, and seniors. There are also chess world championships in rapid, blitz, correspondence, problem solving, Fischer random chess, and computer chess.

The game of chess in its modern form emerged in Spain in the 15th century, though rule variations persisted until the late 19th century. Before Wilhelm Steinitz and Johannes Zukertort in the late 19th century, no chess player seriously claimed to be champion of the world. The phrase was used by some chess writers to describe other players of their day, and the status of being the best at the time has sometimes been awarded in retrospect, going back to the early 17th-century Italian player Gioachino Greco (the first player where complete games survive). Richard Lambe, in his 1764 book The History of Chess, wrote that the 18th-century French player François-André Danican Philidor was "supposed to be the best Chess-player in the world". Philidor wrote an extremely successful chess book (Analyse du jeu des Échecs) and gave public demonstrations of his blindfold chess skills. However, some of Philidor's contemporaries were not convinced by the analysis Philidor gave in his book (e.g. the Modenese Masters), and some more recent authors have echoed these doubts.

In the early 19th century, it was generally considered that the French player Alexandre Deschapelles was the strongest player of the time, though three games between him and the English player William Lewis in 1821 suggests that they were on par. After Deschapelles and Lewis withdrew from play, the strongest players competing in France and Britain respectively were recognised as Louis de la Bourdonnais and Alexander McDonnell. La Bourdonnais visited England in 1825, where he played many games against Lewis and won most of them, and defeated all the other English masters despite offering handicaps. He and McDonnell contested a long series of matches in 1834. These were the first to be adequately reported, and they somewhat resemble the later world championship matches. Approximately 85 games (the true number is up for historical debate) were played, with La Bourdonnais winning a majority of the games.

In 1839, George Walker wrote "The sceptre of chess, in Europe, has been for the last century, at least, wielded by a Gallic dynasty. It has passed from Legalle [Philidor's teacher, whom Philidor regarded as being a player equal to himself, according to Deschapelles] to La Bourdonnais, through the grasp, successively, of Philidor, Bernard, Carlier [two members of La Société des Amateurs], and Deschapelles". In 1840, a columnist in Fraser's Magazine (who was probably Walker) wrote, "Will Gaul continue the dynasty by placing a fourth Frenchman on the throne of the world? the three last chess chiefs having been successively Philidor, Deschapelles, and De La Bourdonnais."