Fischer random chess, also known as Chess960, is a variation of the game of chess invented by the former world chess champion Bobby Fischer. Fischer announced this variation on June 19, 1996, in Buenos Aires, Argentina. Fischer random chess employs the same board and pieces as classical chess, but the starting position of the pieces on the players' home ranks is randomized, following certain rules. The random setup makes gaining an advantage through the memorization of openings impracticable; players instead must rely more on their skill and creativity over the board.
Viswanathan "Vishy" Anand is an Indian chess grandmaster, a former five-time World Chess Champion and a record two-time Chess World Cup Champion. He became the first grandmaster from India in 1988, and he has the eighth-highest peak FIDE rating of all time. In 2022, he was elected the deputy president of FIDE.
Sven Magnus Øen Carlsen is a Norwegian chess grandmaster. Carlsen is a five-time World Chess Champion, the reigning five-time World Rapid Chess Champion, the reigning seven-time World Blitz Chess Champion, and the reigning Chess World Cup Champion. He has held the No. 1 position in the FIDE world chess rankings since 1 July 2011 and trails only Garry Kasparov in time spent as the highest-rated player in the world. His peak rating of 2882 is the highest in history. He also holds the record for the longest unbeaten streak at an elite level in classical chess at 125 games.
Christopher Hikaru Nakamura is an American chess grandmaster, streamer, YouTuber, five-time U.S. Chess Champion, and the reigning World Fischer Random Chess Champion. A chess prodigy, he earned his grandmaster title at the age of 15, the youngest American at the time to do so. With a peak rating of 2816, Nakamura is the tenth-highest-rated player in history.
Fast chess, also known as speed chess, is a type of chess in which each player is given less time to consider their moves than classical chess time controls allow. Fast chess is subdivided, by decreasing time controls, into rapid chess, blitz chess, and bullet chess. Armageddon chess is a particular variation of fast chess in which different rules apply for each of the two players.
The touch-move rule in chess specifies that a player, having the move, who deliberately touches a piece on the board must move or capture that piece if it is legal to do so. If it is the player's piece that was touched, it must be moved if the piece has a legal move. If the opponent's piece was touched, it must be captured if it can be captured with a legal move. If the touched piece cannot be legally moved or captured, there is no penalty. This is a rule of chess that is enforced in all formal over-the-board competitions.
In chess, a blunder is a critically bad mistake that severely worsens the player's position by allowing a loss of material, checkmate, or anything similar. It is usually caused by some tactical oversight, whether due to time trouble, overconfidence, or carelessness. Although blunders are most common in beginner games, all human players make them, even at the world championship level. Creating opportunities for the opponent to blunder is an important skill in over-the-board chess.
Ian Alexandrovich Nepomniachtchi is a Russian chess grandmaster.
Anish Kumar Giri is a Dutch chess grandmaster. A chess prodigy, he completed the requirements for the grandmaster title in 2009 at the age of 14 years, 7 months and 2 days. Giri is a five-time Dutch champion and won the Corus Chess B Group in 2010. He has represented the Netherlands at seven Chess Olympiads. He has also won major international tournaments, including the 2012 Reggio Emilia tournament, 2017 Reykjavik Open, 2023 Tata Steel Chess, and shared 1st place in the 2015 London Chess Classic. In 2019 he won clear first at the Third Edition of the Shenzhen Masters.
Daniil Dmitrievich Dubov is a Russian chess grandmaster. He achieved his final norm for the Grandmaster title at the age of 14 years, 11 months, 14 days in 2011. Dubov won the 2018 World Rapid Chess Championship held in Saint Petersburg.
Lichess is a free and open-source Internet chess server run by a non-profit organization of the same name. Users of the site can play online chess anonymously and optionally register an account to play rated games. Lichess is ad-free and all the features are available for free, as the site is funded by donations from patrons. Features include chess puzzles, computer analysis, tournaments and chess variants.
The open event at the 42nd Chess Olympiad, organised by the Fédération Internationale des Échecs (FIDE), was held from 2–13 September 2016 in Baku, Azerbaijan. It had to be contested by a record number of 180 teams representing 175 nations, however 10 of these did not arrive so the actual participation was 170 teams. Eritrea, Kosovo, and South Sudan all made their debut at the Chess Olympiads. A total of 894 players participated in the open event. The venue of the event was the Baku Crystal Hall.
The Chess World Cup 2019 was a 128-player single-elimination chess tournament that took place in Khanty-Mansiysk, Russia, from 9 September to 4 October 2019. It was won by Azerbaijani grandmaster Teimour Radjabov. He and the runner-up, Ding Liren, both qualified for the Candidates Tournament for the World Chess Championship 2021. It was the 8th edition of the Chess World Cup.
The World Chess960 Championship is a match or tournament held to determine a world champion in Chess960, a popular chess variant in which the positions of pieces on the players' home ranks are randomized with certain constraints. Prior to 2019 FIDE did not recognize a Chess960 world champion or sponsor regular tournaments in the format, but the Chess Classic at Mainz and other non-FIDE affiliated organizations have hosted high-profile Chess960 tournaments and matches. Time controls for Chess960 are non-standardized, and usually conform to the wishes of the tournament sponsor or organizer. As a result, Chess960 championships have been held with irregular time controls ranging from rapid (Mainz) to blitz and bullet.
Alireza Firouzja is an Iranian and French chess grandmaster. Firouzja is the youngest player to have surpassed a FIDE rating of 2800, beating the previous record set by Magnus Carlsen by more than five months.
The World Chess Championship 2021 was a chess match between the reigning world champion Magnus Carlsen and the challenger Ian Nepomniachtchi to determine the World Chess Champion. It was held under the auspices of FIDE and played during Expo 2020 at Dubai Exhibition Centre in Dubai, United Arab Emirates, between 24 November and 12 December 2021. It was originally scheduled for the latter half of 2020 but was postponed until 2021 because of the COVID-19 pandemic. As a result, this is the first sporting event to be held at an international exposition since the 1904 Summer Olympics during the Louisiana Purchase Exposition in St. Louis, United States.
The FIDE World Fischer Random Chess Championship 2019 (WFRCC) was the first world championship in Fischer random chess officially recognized by the international chess federation FIDE. Previous unofficial championships had been held, with the most recent winner being Magnus Carlsen in 2018. The competition started on April 28, 2019, with the first qualifying tournaments, which took place online and were open to all interested participants; and continued with further rounds up to the quarter-finals, which were also online. The semi-finals and final were played over the board between October 27 to November 2, 2019, in the Henie Onstad Kunstsenter in Bærum, Norway. The winner of the final was Wesley So, defeating Magnus Carlsen 13.5–2.5, to become the first FIDE world champion in Fischer random chess. Over the course of the competition, various time controls were applied, with longer games being weighted more heavily.
The 2022 Candidates Tournament was an eight-player chess tournament to decide the challenger for the World Chess Championship 2023. The tournament took place at the Palacio de Santoña in Madrid, Spain, from June 16 to July 5, 2022, with the World Championship finishing in April 2023. As with every Candidates tournament since 2013, it was a double round-robin tournament.
The World Chess Championship 2023 was a chess match between Ian Nepomniachtchi and Ding Liren to determine the new World Chess Champion. The match took place in Astana, Kazakhstan, from 9 April to 30 April 2023, and was a best of 14 games, plus tiebreaks.
On 3 December 2021, in the sixth game of the World Chess Championship 2021, the defending world champion Magnus Carlsen defeated the challenger Ian Nepomniachtchi in 136 moves, which made it the longest game in the history of the World Chess Championship. The game was played in 7 hours and 45 minutes, finishing after midnight local time, to take Carlsen to a 3½–2½ lead in the best-of-14-game match.
Hikaru Nakamura 
