Re: Internet Chess Killer 1.71 Chess Program.rarl
Mirthe Luria
Nevertheless, rules are rules, and Anish and Maxime had to prepare for two 25-minute rapid games followed, if necessary, by Armageddon. It was a feast for chess fans, with the commentary including Alexander Grischuk and later Levon Aronian on the official website...
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The clear favourites by rating in Albania are Superchess. Besides Anand and Rapport, the Romanians have two more 2700+ rated players in Bogdan-Daniel Deac and Jordan van Foreest. In round 2, they will face Rokaden, an all-Swedish squad with Erik Blomqvist on the top board. Will the 2-time Swedish champion get to face Anand on Monday?
GNU Chess lets most modern computers play a full game of chess. Ithas a plain terminal interface, a curses interface, & the uniqueX Windows interface xboard. Best results are obtained usingGNU C to compile GNU Chess.
There are three boards, stacked vertically; 96 pieces of which most arethe traditional chess pieces with just a couple of additions; 26possible directions in which to move. Provides a challenging enoughgame to all but the most highly skilled players.
commandline and graphical interface (Qt) for running chess enginevs. engine matches. It uses the Xboard or UCI chess communication protocol.The engines and matches can be widely configured and results can bestored in "portable game notation", pgn files. This is a developmentsnapshot, see README.Debian for details.
A moderately strong chess engine is included: Dreamer. However, should thisengine be too weak for you, then you can use any other XBoard-compatible chessengine, including the popular Crafty and GNU Chess.
This package contains a chess interface, which means that you can play againstanother human on the same computer, or play on an Internet server. If youwould like to play against a computer, you should install a chess engine suchas gnuchess in addition.
This is the first extras pack for eboard, a graphical chess program which canfunction as an interface to Internet chess servers such as FICS and to chessengines such as Crafty. It provides additional piece sets and sounds.
elephant eye (eleeye) is a Chinese chess (Xiangqi) engineproviding a set of functions for developing Xiangqi games usingthe Universal Chess Interface, which is an open communicationprotocol that enables a chess program engine to communicate withits user interface.
The earliest recognizable form of chess was called chaturanga (or catur for short). It appeared in India, in the seventh century AD and is first mentioned inthe Harshacharita (biography of Harsha, c.590-647) by Banabhatta.
The starting positions in those games were similar to that of chess (up to a switch of the king and the minister/general/queen). However, the pieces had different names, shapes and properties (somewhat shrouded in uncertainty) as tabulated below.
By convention, the chessboard must be oriented so that the closest corner to the right of either player is a light square (light rhymes with right). This was first specified in print by Pedro Damiano (1480-1544) in 1512. The practice of shading dark squares in printed chess diagrams was introduced by the scientist Girolamo Cardano (1501-1576).
To avoid such endings, it's now illegal to move into check or not to move out of check. To better enforce that law, whoever puts a king in check must announce it. In several languages, the plural form of such announcements morphed into the nameof the game itself (chess is a corrupted form of checks in English; the game is called échecs in French).
The oldest extantgame of modern chess was played in 1475 in Valencia between Don Franci de Castellvi (White) and Narciso Vinyoles (Black). The game illustrates a famous poem entitled Scachs d'Amor (Chess Game of Love) written in Catalan (more precisely Valencian) by Castellvi (Venus), Vinyoles (Mars) and Mossèn Bernat de Fenollar (Mercury).
Caissa (pronounced ky-eé-sah) isa nymph of Greek mythologywho became known as the patron godess of chess after a celebrated poem writtenin 1763 by the young William Jones(1746-1794) and entitled CAISSA or The Game at Chess; a Poem.
The generic term of chessboard (or just board) is used for all of these, but it need not be an actual rigid board. It can also be inlaid into a dedicated table or, for best portability, a mat can be used which can be rolled up (or folded, if made out of silicone).
I love the look and feel of a borderless regulation board (2'' = 57 mm) which spans only 18''. (If borders with notation are ever needed, such a board can be placedon top of an ordinary tournament mat.) The best-bang-for-the-buck I found is the inlaid mahogany and maple Zeluschessboard ($55) which comes double-boxed for shipping (Amazon even puts that double box in an oversized shipping box of their own.)
Such high-quality borderless chessboards can also be used in a customized tableor a one-of-a-kind frame (the playing surface can be mounted recessed, flushor raised, according to taste). That's a cost-effective way to bypass the time-consuming process offinishing a good playing surface by hand. If you make your own frame, considerproviding some substantial rounding or overhang on the outside edges to makethe assembly easy to pick up (most commercial products don't).
In modern tournament play, only minor variants of the Staunton chessmen are used. The official tournament guideline states that the base diameter of the king should be no more than 75%of the side of a squares on the chessboard. Four pawns should barely fit into a square (base diameter being 50% the side of a square).
Our next example involves the French style which was dominant throughout Europe beforethe Staunton pattern displaced it for serious play. It's best called Régence. Drop the accent if you must, but avoid the Regency misnomer, since this chess style was actually named after what was the undisputed nevralgic center ofChess in the eighteenth century: Le café de la Régence in Paris, France (best left untranslated).
The bag I recommend to carry full-sized pieces,a rolled-up mat, a clock,scoresheets and pens is from the USCF ($25).(2018-08-07) Chess Clock
Some controversial aspects of timed games.Time limitations on chess games are of relatively recent origins. Chess clocks have been used in competition since the London International Tournament of April 1883. In official FIDE tournaments, the chess clock always sits to the rignt of whoeverplays with the black pieces.
Currently, almost all classical chess tournaments endorsedby the Worldwide Chess Federation are played in90 minutes (per player) for the first 40 moves and 20 minutesfor each side for the rest of the game, with a 30-second Fischer increment per move (starting with the very first move). That gives each player 110 minutes to complete the first 40 moves. (That's code 04 on the Wholesale Chess Advanced Digital Game Timer.)
It's a monstrosity to grant a win in chess to a player who doesn't even have enoughpieces to mate (although it's sometimes done in automated online play). In that case, a player is awarded a draw if the other runs out of time.
Reaching the same position through the same half-moves played in different ordersis of course a common thing, called transposition in chess jargon. After the second move, this is the rule rather than the exception. For cultural and historical reasons, the Ragozin position is normallystudied only under the name of Ragozin defense as a variation of the Queen's Gambit Declined corresponding to the first of thelines enumerated below, to which other transpositions usually refer to;
A chess diagram merely describes the positions of the various pieces on the chessboard. whereas a chess position also includes information about castling and en passant privileges. (The terms configuration or situation are used here to covereither concept indifferently.)
A complete position consists of a chess position and a ply number (odd only when it's White's turn to play). Transposition tables in chess-playing software typicallycontain only positions with ply-parity (indicating whose term it is to play) although complete ply information would be needed to properly dealwith draws by repetition and apply the 50-move rule (and/or the new automatic 75-move rule, officially introduced in 2014).
The special extended "10-bit code" contains 2 bits of data in the leading byteand 8 bits from the following byte. Four of those bits are used to specify which of the 16 piecesis to be moved (each player has at most 16 pieces on the board). The other 6 bits specify the desired relative displacement modulo 64. As this can't be zero, the extra byte is never zero and we can besure that a zero byte cannot occur in an encoded sequence of chess half-moves, except as an endmarker. This makes it trivial to skip an entire sequence of moves to accessthe rest of the data.
Yes, very much so. From any chess position (including diagram, turn, castling and en passant information) we can use a fixed procedure to generate all the possible legal moves and simplyspecify the index within that list of the move to be played. Even better, we don't need to specify a fixed number of bits for each half-movebut simply encode the whole sequence of moves as a (large) number N. from a given position, we may generate the p possiblemoves. The index in that list of the first move to play is N mod p and the code for the rest of the sequence is (N-m)/p. An so onuntil the code for the remaining sequence is 0 (no more moves to play).
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