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Premove
In online chess, a premove is a move input made by a player during their opponent's turn, taking effect only after the opponent moves. A premove is performed in the same way as a normal move, most commonly by dragging the piece to its destination, or by clicking the piece and then clicking its destination. Premoving is available on chess websites such as the Internet Chess Club, the Free Internet Chess Server, Chess.com, and Lichess. Description To premove, a player makes a move input in the same way as they would if it were their turn. After their opponent moves, the premove is immediately executed, provided that the resulting move is legal; otherwise, the premove is discarded. One can cancel a premove by clicking anywhere on the board; if only one premove is allowed at a time, then one can also cancel a premove by making another premove. In general, a piece's premove options are dependent only on its location and type; no other considerations of the board state are relevan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Chess Terminology
This glossary of chess explains commonly used terms in chess, in alphabetical order. Some of these terms have their own pages, like ''#fork, fork'' and ''#pin, pin''. For a list of unorthodox chess pieces, see Fairy chess piece; for a list of terms specific to chess problems, see Glossary of chess problems; for a list of named #opening, opening lines, see List of chess openings; for a list of chess-related games, see List of chess variants; for a list of terms general to board games, see Glossary of board games. A B C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Online Chess
Online chess is chess that is played over the Internet, allowing players to play against each other. This was first done asynchronously through PLATO and email in the 1970s. In 1992, the Internet Chess Server facilitated live online play via telnet, and inspired several other telnet-based systems around the world. Web-based platforms became popular in the 2010s and grew considerably amid the COVID-19 pandemic, alongside a trend of livestreaming chess. History Asynchronous Online chess has existed in various forms including PLATO and play-by-email since the dawn of the Internet in the 1970s. Chess servers Internet chess servers were the first way to play live chess against a human opponent via the internet. In 1992, Michael Moore and Richard Nash developed the American Internet Chess Server (ICS), which allowed users to connect via telnet. Graphical interfaces were developed to improve upon the text-only experience. In 1994, developer Daniel Sleator, who improved the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Chess
Chess is a board game for two players. It is an abstract strategy game that involves Perfect information, no hidden information and no elements of game of chance, chance. It is played on a square chessboard, board consisting of 64 squares arranged in an 8×8 grid. The players, referred to as White and Black in chess, "White" and "Black", each control sixteen Chess piece, pieces: one king (chess), king, one queen (chess), queen, two rook (chess), rooks, two bishop (chess), bishops, two knight (chess), knights, and eight pawn (chess), pawns, with each type of piece having a different pattern of movement. An enemy piece may be captured (removed from the board) by moving one's own piece onto the square it occupies. The object of the game is to "checkmate" (threaten with inescapable capture) the enemy king. There are also several ways a game can end in a draw (chess), draw. The recorded history of chess goes back to at least the emergence of chaturanga—also thought to be an ancesto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Internet Chess Club
The Internet Chess Club (ICC) is a commercial Internet chess server devoted to the play and discussion of chess and chess variants. ICC had over 30,000 subscribing members in 2005. It was the first Internet chess server and was the largest pay to play chess server in 2005. History The first Internet chess server (ICS), programmed by Michael Moore and Richard Nash, was launched on 15 January 1992. Players logged in by telnet, and the board was displayed as ASCII ASCII ( ), an acronym for American Standard Code for Information Interchange, is a character encoding standard for representing a particular set of 95 (English language focused) printable character, printable and 33 control character, control c ... text. Bugs in the server software allowed illegal moves, false checkmates etc. Over time more and more features were added to ICS, such as Elo ratings and a choice of graphical interfaces. The playing pool grew steadily, many of the server bugs were fixed, and playe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Free Internet Chess Server
The Free Internet Chess Server (FICS) is a volunteer-run online chess platform. When the original Internet Chess Server (ICS) was commercialized and rebranded as the Internet Chess Club (ICC) in 1995, a group of users and developers came together to fork the code and host an alternative committed to free access. A rivalry between ICC and FICS persisted for years. Users download one of several graphical client programs, connect to the server via telnet, and can play chess or variants at a range of time controls. Games played on FICS are stored in a database, which has been used to train chess engines and to support academic studies. Though based in the US, the user base is international. In addition to the games themselves, there are chat rooms, pairing systems, analysis tools, and ratings. A relay system displays high-profile tournament games for users to see. As of 2024, FICS is still operational, though has declined in popularity with the rise of web-based chess sites. Histo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Lichess
Lichess (; ) is a free and open-source software, free and open-source Internet chess server run by a Nonprofit organization, non-profit organization of the same name. Users of the site can play online chess anonymously and optionally register an account to play games to earn a rating on Lichess. Lichess is ad-free and all the features are available for free, as the site is funded by donations from patrons, who receive a special badge as thanks for their support. Features include chess puzzles, computer chess, computer analysis, chess tournament, tournaments and chess variants. History Lichess was founded in 2010 by French programmer Thibault Duplessis. The software running Lichess and the design are mostly Open-source software, open source under the GNU Affero General Public License, AGPL license and other free and non-free licenses. The name ''Lichess'' is a "combination of live/light/libre software, libre and chess". On February 11, 2015, an official Lichess mobile app was r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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King (chess)
The king (♔, ♚) is the most important chess piece, piece in the game of chess. It may move to any adjoining square; it may also perform, in tandem with the Rook (chess), rook, a special move called ''castling''. If a player's king is threatened with capture, it is said to be ''in Check (chess), check'', and the player must remove or evade the threat of immediately, such as by moving it away from the attacked square. If this cannot be done, the king is said to be in checkmate, resulting in a loss for that player. A player cannot make any move that places their own king in check. Despite this, the king can become a strong offensive piece in the Chess endgame, endgame or, rarely, the Chess middlegame, middlegame. In Algebraic notation (chess), algebraic notation, the king is abbreviated by the letter ''K'' among English speakers. The white king starts the game on e1; the black king starts on e8. Unlike all other pieces, each player can have only one king, and the kings are never ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Check (chess)
In chess and similar games, check is a condition that occurs when a player's king is under threat of on the opponent's next turn. A king so threatened is said to be ''in check''. A player must get out of check if possible by moving the king to an unattacked square, interposing a piece between the threatening piece and the king, or capturing the threatening piece. If the player cannot remove the check by any of these options, or if using any of these options would result in the player being in check by another piece, the game ends in checkmate and the player loses. Players cannot make any move that puts their own king in check. Overview A check is the result of a move that places the opposing king under an immediate threat of capture by one (or, in rare cases, two) of the player's pieces. Making a move that checks is sometimes called "giving check". Even if a piece is pinned against the player's own king, it may still give check. For example, in the diagrammed position ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Pawn (chess)
The pawn (♙, ♟) is the most numerous and weakest piece in the game of chess. It may move one square directly forward, it may move two squares directly forward on its first move, and it may capture one square diagonally forward. Each player begins a game with eight pawns, one on each square of their second . The white pawns start on a2 through h2; the black pawns start on a7 through h7. Individual pawns are referred to by the on which they stand. For example, one speaks of "White's f-pawn" or "Black's b-pawn". Alternatively, they can be referred to by the piece which stood on that file at the beginning of the game, e.g. "White's king bishop's pawn" or "Black's queen knight's pawn". It is also common to refer to a ''rook's pawn'', meaning any pawn on the a- or h-files, a ''knight's pawn'' (on the b- or g-files), a ''bishop's pawn'' (on the c- or f-files), a ''queen's pawn'' (on the d-file), a ''king's pawn'' (on the e-file), and a ''central pawn'' (on the d- or e-files). The p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Castling
Castling is a move in chess. It consists of moving the king (chess), king two squares toward a rook (chess), rook on the same and then moving the rook to the square that the king passed over. Castling is permitted only if neither the king nor the rook has previously moved; the squares between the king and the rook are vacant; and the king does not leave, cross over, or finish on a square attacked by an enemy piece. Castling is the only move in chess in which two pieces are moved at once. Castling with the is called ''kingside castling'', and castling with the is called ''queenside castling''. In both Algebraic notation (chess), algebraic and descriptive notation, descriptive notations, castling kingside is written as 0-0 and castling queenside as 0-0-0. Castling originates from the ''king's leap'', a two-square king move added to European chess between the 14th and 15th centuries, and took on its present form in the 17th century. Local variations in castling rules were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Rook (chess)
The rook (; ♖, ♜) is a piece in the game of chess. It may move any number of squares horizontally or vertically without jumping, and it may an enemy piece on its path; it may participate in castling. Each player starts the game with two rooks, one in each corner on their side of the board. Formerly, the rook (from ) was alternatively called the ''tower'', ''marquess'', ''rector'', and ''comes'' (''count'' or ''earl''). The term "castle" is considered to be informal or old-fashioned. Placement and movement The white rooks start on the squares a1 and h1, while the black rooks start on a8 and h8. The rook moves horizontally or vertically, through any number of unoccupied squares. The rook cannot jump over pieces. The rook may capture an enemy piece by moving to the square on which the enemy piece stands, removing it from play. The rook also participates with the king in a special move called castling, wherein it is transferred to the square crossed by the king after th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Time Trouble
In chess played with a time control, time trouble, time pressure, or its German translation ''Zeitnot'', is the situation where a player has little time to complete the required moves. When forced to play quickly, the probability of making blunders is increased, so handling the clock is an important aspect of chess playing. The last move of the time control (often move 40) is especially prone to blunders if players only have a few seconds to play it, and many games have been lost due to poor time management in time pressure. Practical aspects Players often spend large amounts of time after the opening as they consider their plans and calculate various tactical variations. In many cases, spending this time to find the correct path is worth the risk of time trouble later on if the position is simplified to a point where it can be played quickly. However, spending large amounts of time in simple positions on non-forcing matters is often excessive. In time trouble, players are usuall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |