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Database of precalculated chess analysis
the endgame tablebase, or simply the tablebase, is a computerised database containing precalculated evaluations of endgame positions. Tablebases are used
Endgame_tablebase
Final phase in the game of chess
reach an endgame; some of them end earlier. All chess positions with up to seven pieces on the board have been solved by endgame tablebases, so the outcome
Chess_endgame
Chess positions with few pieces where none of them are a pawn
construction of endgame tablebases. Grandmaster John Nunn wrote a book (Secrets of Pawnless Endings) summarizing the research of endgame tablebases for several
Pawnless_chess_endgame
Finding an optimal algorithm for playing chess
(if ever). Progress to date is extremely limited; there are tablebases of perfect endgame play with a small number of pieces (up to seven), and some chess
Solving_chess
Computer hardware and software capable of playing chess
years, other endgame database formats have been released including the Edward Tablebase, the De Koning Database and the Nalimov Tablebase which is used
Computer_chess
1993 film by Steven Zaillian
Nd7 and 3...Bxf6 hold the draw. (ii) the modern Lomonosov 7-piece endgame tablebase shows White has a win after 4...Bxf6 with 5.Re2+, sacrificing White's
Searching_for_Bobby_Fischer
Chess rule for claiming a draw
reference to endgame tablebases. Tablebases do not consider the 50- or 75-move rules, so a position that is a theoretical win according to the tablebases may be
Fifty-move_rule
American computer scientist known for Unix (born 1943)
encoding, and his work on computer chess that included the creation of endgame tablebases and the chess machine Belle. Since 2006, Thompson has worked at Google
Ken_Thompson
system. endgame The third and last phase of the game, when there are few pieces left on the board. The endgame follows the middlegame. endgame tablebase A computerized
Glossary_of_chess
Traditional board game for two players
published a tablebase for select six-piece endgames, and by 2005, following the publication of Nalimov tablebases, all six-piece endgame positions were
Chess
Rapid growth of the complexity of a problem due to its combinatorial properties
October 2013. http://chessok.com/Lomonosov Endgame Tablebases Lomonosov Endgame Tablebases "7-piece-endgame-tablebase (chess)". Stack Exchange. Aviezri Fraenkel;
Combinatorial_explosion
Function in a computer game-playing program that evaluates a game position
August 6, 2020. Chess engines frequently use endgame tablebases to quickly and accurately evaluate endgame positions. Historically, evaluation functions
Evaluation_function
Computer program for chess analysis and game
engines use endgame tablebases to increase their playing strength during the endgame. An endgame tablebase includes all possible endgame positions with
Chess_engine
Free and open-source chess engine
but was defeated by Leela Chess Zero after blundering in a 7-man endgame tablebase draw. It turned this result around in the fourth edition, defeating
Stockfish_(chess)
Chess endgame
Troitsky line] and above". John Nunn analyzed the endgame of two knights versus a pawn with an endgame tablebase and stated that "the analysis of Troitsky and
Two_knights_endgame
Basic chess fundamentals and ideas developed to better understand the game
Pawnless chess endgame § Minor pieces only and Chess endgame § Effect of tablebases on endgame theory). Several important works on the endgame have been published
Chess_theory
Chess endgame where both sides have a queen and one side has an extra pawn
three books based on the most important endgames in the five-piece endgame tablebases but omitted this endgame because "... it proved too hard to understand"
Queen and pawn versus queen endgame
Queen_and_pawn_versus_queen_endgame
Chess endgame of rook & bishop versus rook
hardest endgames to draw." Being a five-piece endgame, the rook and bishop versus rook endgame has been fully analysed using computers. Endgame tablebases show
Rook and bishop versus rook endgame
Rook_and_bishop_versus_rook_endgame
Chess endgame
pieces, queen versus rook was one of the first endings to be solved by endgame tablebases. Just after the ending was fully analysed by computers, a challenge
Queen_versus_rook_endgame
Problem-solving technique and algorithmic paradigm
"Is there a freely available online 7 piece Endgame tablebase?". Stack Exchange. "Lomonosov Endgame Tablebases". ChessOK. Archived from the original on April
Brute-force_search
English chess grandmaster (born 1955)
more tablebases are created and tablebases are more deeply data-mined. Nunn is thus (as of 2004) the foremost data miner of chess endgame tablebases. Nunn
John_Nunn
Game of chess
became simple enough to use an endgame tablebase. As of October 1999, however, there were no seven-piece endgame tablebases, and seven pieces remained in
Kasparov_versus_the_World
Russian chess player
involves analyzing the endgame with two knights versus a pawn, see Troitsky line. John Nunn analyzed this endgame with an endgame tablebase and stated that "the
Alexey_Troitsky
Reading material about chess endgame
constructing endgame tablebases. Some endgame books are general works about many different kinds of endgames whereas others are limited to specific endgames such
Chess_endgame_literature
Overview of game 6 in 2021 World Chess championship
130. Kh3 Qe6? (diagram) This was the losing move according to the endgame tablebases. The queen should have remained behind the pawns in order to hold
Carlsen versus Nepomniachtchi, World Chess Championship 2021, Game 6
Carlsen_versus_Nepomniachtchi,_World_Chess_Championship_2021,_Game_6
Ending goal in chess
solution; however, it contains an inaccurate move by Black (according to endgame tablebases). Avoid stalemate From Silman One example of a stalemate is this position
Checkmate
Branch of game theory about two-player sequential games with perfect information
where players attempt to establish connections Endgame tablebase, a database saying how to play endgames Expectiminimax tree, an adaptation of a minimax
Combinatorial_game_theory
Game whose outcome can be correctly predicted
benefit from solutions of the game from certain endgame positions (in the form of endgame tablebases), which will allow it to play perfectly after some
Solved_game
Defensive technique in chess
fail to recognize fortress-type positions (unless using a suitable endgame tablebase) and incorrectly claim a winning advantage in them. This article uses
Fortress_(chess)
Game-playing artificial intelligence
trained via self-play, with no access to rules, opening books, or endgame tablebases. The trained algorithm used the same convolutional and residual architecture
MuZero
Chess endgame drawing technique
defenses are more complicated. Chess endgame Endgame tablebase Lucena position Rook and pawn versus rook endgame (de la Villa 2008:125) (Nunn 1999:281–82)
Philidor_position
Database of chess openings given to computer chess programs
openings Chess engine Computer chess Computer shogi Shogi opening Endgame tablebase Chess endgame literature Jennings, Peter (January 1978). "The Second World
Chess opening book (computers)
Chess_opening_book_(computers)
Topics referred to by the same term
Syzygy, in biology, the pairing of chromosomes during meiosis Syzygy endgame tablebases, used by chess engines Syzygy, a concept in the philosophy of Vladimir
Syzygy
Russian chess grandmaster (born 1975)
during the match. The endgame tablebases the program used were restricted to five pieces even though a complete six-piece tablebase was widely available
Vladimir_Kramnik
Overview of and topical guide to chess
passed pawns – both its own pawns and the opponent's. Endgame tablebase – computer database of endgame positions giving optimal moves for both sides and the
Outline_of_chess
Chess software website company
contain data from prior games and provide engine analyses of games. Endgame tablebases are also provided by the company. ChessBase India, ChessBase's Indian
ChessBase
Chess match between Vladimir Kramnik and Veselin Topalov
annotating the game on the ChessBase site after the game, noted that endgame tablebases show that 55.Kd7! still draws. Ke8 56. Nc7+ Kd8 57. Ne6+ Kc8 58. Ke7
World_Chess_Championship_2006
2014 puzzle game
depth, plus transposition tables to avoid duplication. Analogously to endgame tablebases, tables are used to estimate success (for building a large enough
2048_(video_game)
First chess-playing automaton
the black King, who performs the best defense according to a chess endgame tablebase, recorded in Portable Game Notation. The automaton does not deliver
El_Ajedrecista
Communication protocol for chess software
responsibility for handling endgame tablebases, this is arguably better handled in the engine itself, as having tablebase information can be useful for
Universal_Chess_Interface
Game-playing artificial intelligence
the same conditions as in the TCEC superfinal: 44 CPU cores, Syzygy endgame tablebases, and a 32 GB hash size. Instead of a fixed time control of one move
AlphaZero
Computer program that plays checkers
and MTC (depth to conversion) endgame databases. A version for Italian checkers with a nine-piece endgame tablebase is available, too. A 10x10 version
KingsRow
Playing of Arimaa by computer programs
function Quiescence search Monte-Carlo Tree Search UCT Opening book Endgame tablebase Several aspects of Arimaa make it difficult for computer programs
Computer_Arimaa
techniques, heuristic approaches, iterative deepening, and opening/endgame tablebases. During this time certain chess grandmasters devoted themselves to
History_of_chess_engines
Composed chess endgame position
In the game of chess, an endgame study, or just study, is a type of chess problem that starts with a composed position—i.e. one that has been made up
Endgame_study
Comparison of chess video games Computer chess Computer Olympiad Endgame tablebase List of Internet chess servers Software for handling chess problems
List_of_chess_software
1976 chess computer
Thompson (computer programmer) Joseph Henry Condon Endgame tablebase Bell Labs Pawnless chess endgame § Browne versus Belle Newborn 1997 p. 147. Newborn
Belle_(chess_machine)
Overview of and topical guide to databases
electronic design automation. Endgame tablebase – computerized database that contains precalculated exhaustive analysis of a chess endgame position. Food composition
Outline_of_databases
and composer of over 300 studies, he is a major expert in compiling endgame tablebases for chess-playing engines. Two times World Champion for solving of
List of chess endgame study composers
List_of_chess_endgame_study_composers
2024 chess tournament in Budapest
complicate things and went on to outplay his opponent in a double-rook endgame. The biggest individual upset was perhaps Shakhriyar Mamedyarov's draw
Open event at the 45th Chess Olympiad
Open_event_at_the_45th_Chess_Olympiad
Game of chess via postal system or e-mail
materials that provide the best move in a given position, such as endgame tablebases. The ICCF calls this a "hybrid competition that involves the strategy
Correspondence_chess
Human methods against game-playing computers
reasonably end with a mostly full board and few captured pieces, avoiding endgame tablebase style "solved" positions due to scarcity of units. While human Arimaa
Anti-computer_tactics
2020–2021 computer chess tournament
"TCEC Season 20 rules". Retrieved 5 December 2020. a particular Endgame tablebase This draw rule adjudicates the game as drawn if, at Black's move 35
TCEC_Season_20
Chess endgame study by Fernando Saavedra
stipulation to the standard "White to play and win". As computer-generated endgame tablebases confirm, Black can offer longer resistance by 3...Kb2, for which White
Saavedra_position
Natural number
counting mirrored positions. Has some importance when constructing an endgame tablebase. Model number of the home computer Amstrad CPC 464. 465 = 3 × 5 ×
400_(number)
Unofficial World Computer Chess Championship
and changed in every stage. Large pages are enabled, and access to endgame tablebases including Syzygy 7-men is permitted. Engines are allowed updates between
Top_Chess_Engine_Championship
Chess match between Magnus Carlsen and Ian Nepomniachtchi
as "terribly unpleasant" for Nepomniachtchi. While the position was a tablebase draw, the burden was mainly on Nepomniachtchi to defend accurately to
World_Chess_Championship_2021
of the match. The endgame tablebases used by the program were restricted to five pieces, even though a complete six-piece tablebase is widely available
Human–computer_chess_matches
Chess software
enhanced features such as an opening book, positional learning, and an endgame tablebase. Crafty was one of the programs included in the SPEC CPU2000 benchmark
Crafty
Academic journal
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
ICGA_Journal
Chronological list of notable chess games
queen for two rooks to enter into an unbalanced endgame—which was drawn, according to endgame tablebases, after only seven pieces remained on the board—but
List_of_chess_games
Italian chess player and writer
2013). "Gioacchino Greco". de Man, Ronald; Guo, Bojun. "KQvKP Syzygy Endgame Tablebases". Eales, Richard (1985). Chess: The History of a Game. Facts on File
Gioachino_Greco
Type of move in chess
Botvinnik–Ravinsky, Black resigned. With best play according to the endgame tablebase, 126...Kb3 127.Qf7+ Ka4 128.g8=Q Qg4+ 129.Kh6 Qh4+ 130.Kg7 Qg3+ 131
Cross-check_(chess)
Chess opening
Berlin Defence, the players exchange queens early, entering an endgame. The resulting endgames are generally viewed as equal or very slightly favourable for
Berlin_Defence
Computer program that plays draughts
loss each against Nemesis and Kingsrow) Nemesis used its own 8-piece endgame tablebase. Schaeffer, Jonathan (16 December 2008). One Jump Ahead: Computer
Nemesis_(draughts_player)
Russian chess programmer (born 1965)
Context Relevant. Starting in 1998, he wrote a tablebase generator which included many different endgames. He received a ChessBase award at the ChessBase
Eugene_Nalimov
Chess piece
power of the bishop. Bishops usually gain in relative strength towards the endgame as more pieces are captured and more open lines become available on which
Bishop_(chess)
English chess master and Shakespearean scholar (1810–1874)
the game will be drawn." (p. 439) Modern endgame tablebases confirm Staunton's assessments of both endgames. A stronger player sometimes gives a weaker
Howard_Staunton
Rinck 1947. "Library of Congress authority ID". Rinck 1950. Syzygy endgame tablebases 2020. Chéron 1958. Rinck, Henri (1909). 150 fins de partie. Leipzig
Henri_Rinck
Position in rook and pawn versus rook chess endgame
The Lucena position is a position in chess endgame theory where one side has a rook and a pawn and the defender has a rook. Karsten Müller said that it
Lucena_position
Open-source online chess platform
fortress opposition Tarrasch rule triangulation Zugzwang Study Tablebase Two knights endgame Wrong bishop Wrong rook pawn Tournaments List of strong chess
Lichess
2020 computer chess tournament
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
TCEC_Season_17
Chess engine
only a three-move opening book, limited (512MB) hash size, and no endgame tablebases (the match being dubbed "Everything but a pawn"). The match, again
Rybka
1941 book by Reuben Fine
Fine's claim that the endgame of two bishops and a knight against a rook is drawn with correct play. In fact, endgame tablebases show that the three minor
Basic_Chess_Endings
Chess-playing automaton hoax (1770–1854)
pp. 1028–1030. OCLC 945170335. Jiménez, Ramón (20 July 2004). "The rook endgame machine of Torres y Quevedo". ChessBase. Archived from the original on
Mechanical_Turk
Chess opening
on to the extra pawn, Black will have good chances to win the ensuing endgame. This is not easy, however, and many Sicilian players opt to decline the
Smith–Morra_Gambit
14th season of the Top Chess Engine Championship
that it had found a forced line leading to an endgame tablebase win; indeed analysis with 7-piece tablebases showed that Leela's position was winning. Under
TCEC_Season_14
Open-source chess program
September 2009, was the second installment of the IPPOLIT series. Endgame tablebase, RobboBases support was introduced. Igorrit, released in January 2010
IPPOLIT
Chess opening
fortress opposition Tarrasch rule triangulation Zugzwang Study Tablebase Two knights endgame Wrong bishop Wrong rook pawn Tournaments List of strong chess
King's_Indian_Attack
First Internet-only daily chess newspaper
Baburin investigating a topical or recent endgame or endgames in great detail, also making use of endgame tablebases (sometimes using ‘FinalGen’) and modern
Chess_Today
Chess game played by Garry Kasparov
During the game, Kasparov visualizing this line saw White having a stronger endgame after 32. Kb2 Ra8 33. Qb6 Qd4+ 34. Qxd4 Rxd4 35. Rxf7 a5 36. Be6 axb4 37
Kasparov's_Immortal
2014 video game
intended to prevent traditional "solved" chess endgames, which can be played by consulting a chess tablebase, and therefore does not require player skill
Chess_2:_The_Sequel
Chess opening
and less dynamic than either of those openings. It often leads to good endgames for Black, who has the better pawn structure. The Caro-Kann is considered
Caro–Kann_Defence
Chess opening
fortress opposition Tarrasch rule triangulation Zugzwang Study Tablebase Two knights endgame Wrong bishop Wrong rook pawn Tournaments List of strong chess
Falkbeer_Countergambit
Chess opening
f6-knight] 10.Bxd8 Nb6 11.Bxc7 White is up an exchange and a pawn, the endgame should be winning for White). Black often repels the bishop with 6...h6
King's_Indian_Defence
1982 video game
fortress opposition Tarrasch rule triangulation Zugzwang Study Tablebase Two knights endgame Wrong bishop Wrong rook pawn Tournaments List of strong chess
1K_ZX_Chess
Chess opening
line 4.dxe5 dxe5 5.Qxd8+ Kxd8 6.Bc4 Be6 7.Bxe6 fxe6 results in a drawish endgame despite Black's loss of castling rights (a similar idea to a famous variation
Pirc_Defence
Chess game played in London in 1851
Qxc8+ Kxc8 26.Bf8 h6 27.Nd6+ Kd8 28.Nxf7+ Ke8 29.Nxh8 Kxf8, with a winning endgame for White. 21. Nxg7+ Kd8 22. Qf6+! (diagram) This queen sacrifice forces
Immortal_Game
Chess opening
fortress opposition Tarrasch rule triangulation Zugzwang Study Tablebase Two knights endgame Wrong bishop Wrong rook pawn Tournaments List of strong chess
Scandinavian_Defense
Chess opening
fortress opposition Tarrasch rule triangulation Zugzwang Study Tablebase Two knights endgame Wrong bishop Wrong rook pawn Tournaments List of strong chess
Tennison_Gambit
American chess player (1933–2024)
fortress opposition Tarrasch rule triangulation Zugzwang Study Tablebase Two knights endgame Wrong bishop Wrong rook pawn Tournaments List of strong chess
Lisa_Lane
Chess opening
doubled pawns in some positions, a weakness for white, especially in the endgame. Angus Dunnington suggests that combining this move with a gradual central
Durkin_Opening
Chess opening
fortress opposition Tarrasch rule triangulation Zugzwang Study Tablebase Two knights endgame Wrong bishop Wrong rook pawn Tournaments List of strong chess
Queen's_Indian_Defense
British chess composer
published by Roycroft in three booklets in 1986, years ahead of full tablebase output on CD. Roycroft worked for IBM UK from 1961 until early retirement
John_Roycroft
Chess opening
fortress opposition Tarrasch rule triangulation Zugzwang Study Tablebase Two knights endgame Wrong bishop Wrong rook pawn Tournaments List of strong chess
Fried_Liver_Attack
Chess opening
fortress opposition Tarrasch rule triangulation Zugzwang Study Tablebase Two knights endgame Wrong bishop Wrong rook pawn Tournaments List of strong chess
Queen's_Gambit
10th-century Turkic scholar at Abbasid court
and links to a longer technical article. Explanations of the code and tablebase-generation methods used for Suli's Diamond and related four-piece shaṭranj
Abu_Bakr_bin_Yahya_al-Suli
Chess opening
fortress opposition Tarrasch rule triangulation Zugzwang Study Tablebase Two knights endgame Wrong bishop Wrong rook pawn Tournaments List of strong chess
Réti_Opening
Chess opening
fortress opposition Tarrasch rule triangulation Zugzwang Study Tablebase Two knights endgame Wrong bishop Wrong rook pawn Tournaments List of strong chess
Blumenfeld_Gambit
Chess opening
some believe that the queenside majority gives Black the advantage in the endgame (Schlechter suggested 10...c5!?). The popularity of the Danish plummeted
Danish_Gambit
ENDGAME TABLEBASE
ENDGAME TABLEBASE
ENDGAME TABLEBASE
ENDGAME TABLEBASE
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Oriya, Sanskrit, Sindhi, Telugu
Lord Shiva; Sun; From the Beginning
Girl/Female
Hindu, Indian, Kannada, Telugu
A Delicate Flower; Winter; Moon
Surname or Lastname
Catalan (Marès, also Marés)
Catalan (Marès, also Marés) : topographic name from Catalan marès ‘by the sea’.English (of Norman origin) : topographic name from Old French marais ‘marsh’ (Norman and Picard marese), or a habitational name from (Le) Marais in Calvados, Normandy.Dutch : metronymic from the personal name Marie.Czech and Slovak (Mareš) : from a derivative of the personal names Marek or Martin.
Female
Greek
Variant spelling of Greek Aikaterine, AIKATERINA means "pure."
Boy/Male
Indian, Punjabi, Sikh
Famous Light
Boy/Male
Hindu, Indian
Blue
Girl/Female
Greek
Truthful. Mythological goddess of truth.
Boy/Male
Indian, Telugu
Affection; Love
Male
Icelandic
Icelandic form of Old Norse Þórr, ÞÓR means "thunder."Â
Female
French
Literary name derived from an Old French slang word (cosette) for something small and trivial, COSETTE means "little thing of no importance." Victor Hugo gave this name to the illegitimate daughter of Fantine in his novel Les Misérables.Â
ENDGAME TABLEBASE
ENDGAME TABLEBASE
ENDGAME TABLEBASE
ENDGAME TABLEBASE
ENDGAME TABLEBASE
v. t.
To tame.
v. i.
To be in gear, as two cogwheels working together.
v. t.
To enter into contest with; to encounter; to bring to conflict.
v. t.
To cover as with a dome.
v. i.
To engage in any affair.
v. t.
To gain for service; to bring in as associate or aid; to enlist; as, to engage friends to aid in a cause; to engage men for service.
v. i.
To carouse or engage in dissipation.
v. t.
To inclose, as in a frame.
v. t.
To put under pledge; to pledge; to place under obligations to do or forbear doing something, as by a pledge, oath, or promise; to bind by contract or promise.
v. i.
To bind one's self; to engage.
v. t.
To come into gear with; as, the teeth of one cogwheel engage those of another, or one part of a clutch engages the other part.
imp. & p. p.
of Engage
v. t.
To gain over; to win and attach; to attract and hold; to draw.
n.
Marriage only within the tribe; a custom restricting a man in his choice of a wife to the tribe to which he belongs; -- opposed to exogamy.
v. t.
To engage with; to attack.
v. i.
To embark in a business; to take a part; to employ or involve one's self; to devote attention and effort; to enlist; as, to engage in controversy.
v. i.
To enter into conflict; to join battle; as, the armies engaged in a general battle.
v. i.
To promise or pledge one's self; to enter into an obligation; to become bound; to warrant.
v. t.
To employ the attention and efforts of; to occupy; to engross; to draw on.
p. pr. & vb. n.
of Engage