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TCEC Season 20
The 20th season of the Top Chess Engine Championship began on 1 December 2020 and ended on 1 February 2021. The defending champion was Stockfish, which defeated Leela Chess Zero in the previous season's superfinal. The season 20 superfinal was a rematch between the same two engines. Stockfish once again came out ahead, winning by 6 games (+14 -8 =78). Overview TCEC underwent some major changes for season 20. There were a plethora of new engines participating in the Qualification League for the first time. Furthermore, two major new rules changes went into effect: # Engines are no longer disqualified if they crash three times, although crashes are still treated as losses. # The "TCEC win rule", which stated that games are adjudicated as won if both engines showed a +10 eval or greater for 5 consecutive moves, is abolished. Instead, games are played till mate, 3-fold repetition, the 50-move rule is reached, a Syzygy 6-piece tablebase position is reached, or if the "TCEC draw rule ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stockfish (chess)
Stockfish is a free and open-source chess engine, available for various desktop and mobile platforms. It can be used in chess software through the Universal Chess Interface. Stockfish has consistently ranked first or near the top of most chess-engine rating lists and, as of October 2022, is the strongest CPU chess engine in the world. It has won the Top Chess Engine Championship 13 times and the Chess.com Computer Chess Championship 19 times. Stockfish is developed by Marco Costalba, Joona Kiiski, Gary Linscott, Tord Romstad, Stéphane Nicolet, Stefan Geschwentner, and Joost VandeVondele, with many contributions from a community of open-source developers. It is derived from Glaurung, an open-source engine by Tord Romstad released in 2004. Features Stockfish can use up to 1024 CPU threads in multiprocessor systems. The maximal size of its transposition table is 32 TB. Stockfish implements an advanced alpha–beta search and uses bitboards. Compared to other engines, it is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TCEC Season 17
The 17th season of the Top Chess Engine Championship began on 2 January 2020 and ended on 22 April 2020. TCEC Season 16 3rd-place finisher Leela Chess Zero won the championship, defeating the defending champion Stockfish 52.5-47.5 in the superfinal. Season 17 featured for the first time two separate leagues, one for GPU-based engines and one for CPU-based engines. TCEC also raised the computing power available to both CPU and GPU engines. The hardware for CPU engines was doubled to 88 cores, while the hardware for GPU engines was raised to 4 RTX 2080 Ti's. Overview In keeping with its identity as a competition run at long time controls on high-end hardware, TCEC secured a hardware upgrade for the competing CPU engines. Among other changes, the number of cores available is doubled from 44 to 88, the operating system used is now Linux, and Syzygy endgame tablebases are now cached directly in the RAM for faster access. Because this upgrade advantages CPU engines compared to GPU en ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taimanov Attack And Other Lines
Taimanov (russian: Тайманов) is a Russian masculine surname, its feminine counterpart is Taimanova. It may refer to * Iskander Taimanov (born 1961), Russian mathematician * Mark Taimanov (1926–2016), Russian chess Grandmaster and concert pianist See also * Taimanov Variation The Taimanov Variation can refer to variations of four different chess openings, all List of chess openings named after people, named after Mark Taimanov: *In the Sicilian Defense#Taimanov Variation: 4...Nc6, Sicilian Defense, 1.e4 c5 2.Nf3 e6 3.d4 ..., various chess openings used by Mark Taimanov {{surname Russian-language surnames ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danny Gormally
Daniel William Gormally (born 4 May 1976) is an English chess Grandmaster. His peak rating is 2573, achieved in the January 2006 rating list. He was born in South Shields and was brought into the game of chess by his father at the age of 7. Both being members of the South Shields Chess Club. He shared first place at the Politiken Cup in 1998 and in 2003, won the Challengers tournament of the 78th Hastings International Chess Congress. In September 2006, he tied for 2nd-9th with Luke McShane, Stephen J. Gordon, Gawain Jones, Šarūnas Šulskis, Luís Galego, Klaus Bischoff and Karel van der Weide in the 2nd EU Individual Championship in Liverpool. In November 2006 Gormally was joint winner of the British Rapidplay Chess Championship. In 2015 he tied for the second place with David Howell and Nicholas Pert in the 102nd British Championship and eventually finished fourth on tiebreak. Also in 2015, he appeared as a contestant in three episodes of the television quiz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tata Steel Chess Tournament 2021
The Tata Steel Chess Tournament 2021 was the 83rd edition of the Tata Steel Chess Tournament. It was held in Wijk aan Zee, Netherlands from 15-31 January 2021, but was not open to visitors ("online only"). The tournament was won by Jorden van Foreest, who defeated Anish Giri Anish Kumar Giri ( ne, अनीश कुमार गिरी; russian: Аниш Кумар Гири; born 28 June 1994) is a Russian-born Dutch chess grandmaster. A chess prodigy, he completed the requirements for the title Grandmaster at t ... in an Armageddon playoff. Results Results by round Standings : Masters results by round Pairings and results: ' : : References External links * {{Tata Steel Chess Tournament Tata Steel Chess Tournament 2021 in chess 2021 in Dutch sport January 2021 sports events in Europe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aryan Tari
Aryan Tari (Persian: آرین طاری; born 4 June 1999) is a Norwegian chess grandmaster. Tari was Norwegian champion in 2015 and 2019 and won the World Junior Chess Championship in 2017. he is the second-highest ranked player from Norway by FIDE, after only current World Champion Magnus Carlsen. Chess career 2012-2014 Tari has played chess since the age of five. He won the Junior section of the Norwegian Chess Championship in 2012, qualifying him for the championship section in 2013. At the Open Norwegian Championship in Fagernes in March 2013, Tari finished in seventh place and scored a norm for the title of Grandmaster, the second youngest Norwegian player ever to have done so at the time..Following an eighth-place finish in 2013 and a second-place finish in 2014. 2015-2018 Tari won the 2015 Norwegian Chess Championship, At age 16 he was the third youngest player to achieve this feat, after Simen Agdestein and Magnus Carlsen, who won at age 15. Tari secured his second gra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anish Giri
Anish Kumar Giri ( ne, अनीश कुमार गिरी; russian: Аниш Кумар Гири; born 28 June 1994) is a Russian-born Dutch chess grandmaster. A chess prodigy, he completed the requirements for the title Grandmaster at the age of 14 years, 7 months and 2 days. FIDE awarded him the title in 2009. Giri is a four-time Dutch champion (2009, 2011, 2012, and 2015) and won the Corus Chess B Group in 2010. He has represented the Netherlands at five Chess Olympiads (2010, 2012, 2014, 2016, 2018). He also won major international tournaments, including the 2012 Reggio Emilia tournament, 2017 Reykjavik Open and shared 1st place in the 2015 London Chess Classic and 2018 Wijk aan Zee. In 2019 he won clear first at the Third Edition of the Shenzhen Masters, deemed by some to be his first supertournament victory and supported by Dutch Chess Federation (KNSB). Anish Giri is the No. 1 ranked player in the Netherlands, having switched from Russia in 2009. In 2021 Wijk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ICGA Journal
The ''ICGA Journal'' is a quarterly academic journal published by the International Computer Games Association. It was renamed in 2000. Its previous name was the ''ICCA Journal'' of the International Computer Chess Association, which was founded in 1977. The journal covers computer analysis on two-player games, especially games with perfect information such as chess, checkers, and Go. It has been the primary outlet for publication of articles on solved games, including the development of endgame tablebases in chess and other games. For example, John W. Romein and Henri E. Bal reported in the journal in 2002 that they had solved Awari and, in 2015, David J. Wu reported his solution for the Arimaa Challenge.{{cite journal , first=David J. , last=Wu , year=2015 , title=Designing a Winning Arimaa Program , journal=ICGA Journal , volume=38 , number=1 , pages=19–40 , doi=10.3233/ICG-2015-38104 , url=https://icosahedral.net/downloads/djwu2015arimaa.pdf From 1983 till 2015 ''ICGA Jou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Matthew Sadler
Matthew David Sadler (born 15 May 1974) is an English chess grandmaster, chess writer and two-time British Chess Champion. He is the No. 2 ranked English player Personal life Sadler has a French mother, speaks French perfectly and is also qualified to play in closed French events. He was tipped to reach the heights scaled by other leading English players as Michael Adams and Nigel Short but made the decision to cease playing professionally in his mid 20s, opting for an IT career in the Netherlands. Chess career Sadler won the British Championship in 1995 at the age of 21 and again in 1997 (jointly with Michael Adams). He represented England in the 1996 Chess Olympiad, scoring 10½/13 and winning a gold medal for the best score on board four (England finished fourth), and also played in 1998 scoring 7½/12. He made 7/9 on board four for England at the European Team Chess Championship in Pula in 1997. His was the best individual score of the five-man English team and so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evaluation Function
An evaluation function, also known as a heuristic evaluation function or static evaluation function, is a function used by game-playing computer programs to estimate the value or goodness of a position (usually at a leaf or terminal node) in a game tree. Most of the time, the value is either a real number or a quantized integer, often in ''n''ths of the value of a playing piece such as a stone in go or a pawn in chess, where ''n'' may be tenths, hundredths or other convenient fraction, but sometimes, the value is an array of three values in the unit interval, representing the win, draw, and loss percentages of the position. There do not exist analytical or theoretical models for evaluation functions for unsolved games, nor are such functions entirely ad-hoc. The composition of evaluation functions is determined empirically by inserting a candidate function into an automaton and evaluating its subsequent performance. A significant body of evidence now exists for several games l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leela Chess Zero
Leela Chess Zero (abbreviated as LCZero, lc0) is a free, open-source, and deep neural network–based chess engine and volunteer computing project. Development has been spearheaded by programmer Gary Linscott, who is also a developer for the Stockfish chess engine. Leela Chess Zero was adapted from the Leela Zero Go engine, which in turn was based on Google's AlphaGo Zero project. One of the purposes of Leela Chess Zero was to verify the methods in the AlphaZero paper as applied to the game of chess. Like Leela Zero and AlphaGo Zero, Leela Chess Zero starts with no intrinsic chess-specific knowledge other than the basic rules of the game. Leela Chess Zero then learns how to play chess by reinforcement learning from repeated self-play, using a distributed computing network coordinated at the Leela Chess Zero website. As of December 2022, Leela Chess Zero has played over 1.5 billion games against itself, playing around 1 million games every day, and is capable of play at a lev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rook And Pawn Versus Rook Endgame
The rook and pawn versus rook endgame is a fundamentally important, widely studied chess endgame. Precise play is usually required in these positions. With optimal play, some complicated wins require sixty moves to either checkmate, capture the defending rook, or successfully promote the pawn. In some cases, thirty-five moves are required to advance the pawn once. The play of this type of ending revolves around whether or not the pawn can be promoted, or if the defending rook must be sacrificed to prevent promotion. If the pawn promotes, that side will have an overwhelming advantage. If the pawn is about to promote, the defending side may give up their rook for the pawn, resulting in an easily won endgame for the superior side (a basic checkmate). In a few cases, the superior side gives up their rook in order to promote the pawn, resulting in a winning queen versus rook position (see Pawnless chess endgame#Queen versus rook). A rule of thumb (with exceptions) is: ''if the kin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
