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Block (chess)
A block is a defensive tactic in chess in response to an attack, consisting of interposing a piece between the opponent's attacking piece and the piece being attacked. This type of blocking will only work if the attacking piece is a type that can move linearly an indefinite number of squares such as a queen, rook, or bishop and there is at least one empty square in the line between the attacking and attacked piece. Blocking is not an option when the attacking piece is directly adjacent to the piece it is attacking, or when the attacking piece is a knight (because knights "jump over other pieces" and cannot be blocked). When an opponent's attack on a piece is blocked, the blocking piece is to some extent pinned, either relatively or absolutely, until a future move by either side allows it to be unpinned. A check on a king by an opponent's queen, rook, or bishop can sometimes be blocked by moving a piece to a square in line in between the opponent's checking piece and the check ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Back Rank Mate
In chess, a back-rank checkmate (also known as the corridor mate) is a checkmate delivered by a rook or queen along a back rank (that is, the row on which the pieces ot pawnsstand at the start of the game) in which the mated king is unable to move up the board because the king is blocked by friendly pieces (usually pawns) on the second rank. A typical position is shown to the right. Introduction Back-rank mates occur quite often in games at fairly low levels. This is because beginners typically fail to anticipate an impending mate on the back rank. At higher levels of play, though the mate itself does not occur very often, play is often affected by the possibility of it—the fact that a player has to spend time guarding against the mate may leave them vulnerable to other threats and tactical ideas. Back-rank mates are often guarded against by a friendly rook or queen protecting the back rank. However, it may be possible for the attacking side to deflect one of these pieces ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chess Tactic
In chess, a tactic is a sequence of moves that each makes one or more immediate threats ─ that is, a check, a material threat, a checkmating sequence threat, or the threat of another tactic ─ which culminates in the opponent being unable to respond to all of the threats without conceding an immediate benefit to the opponent. Most often, the immediate benefit takes the form of a material advantage or checkmating attack; however, some tactics are used for defensive purposes and can salvage material that would otherwise be lost, or to induce stalemate in an otherwise lost position. Tactics are usually contrasted with strategy, whereby the individual moves by themselves don't make indefensible threats, and the cumulative advantage of the moves takes longer to be capitalised on. In rough terms, the dichotomy can be summarised as tactics concerning short-term play and strategy concerning long-term play. Examples of strategic advantages are weaknesses in, compromised pawn structure i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prophylaxis (chess)
In chess, prophylaxis consists of a move or series of moves done by a player to prevent their opponent from taking some action. Such preventative moves, or ''prophylactic moves'', aim not only to improve one's position but also to restrict the opponent in improving their own. Many standard and widespread opening moves can be considered prophylactic. One common prophylactic idea is the advance of the near a castled king, which can be done to provide luft and/or to prevent a pin; another is to transfer one's king to the b-file after castling queenside so as to protect an unmoved a-pawn, among other purposes. Prophylaxis is a distinctive feature of , often preventing opponents from entering risky, double-edged lines, as well as punishing opponents who play too aggressively. Using prophylaxis is an essential skill at advanced levels of play. Famous practitioners of prophylactic play include Aron Nimzowitsch, Tigran Petrosian, and Anatoly Karpov; even players, such as Mikhail Tal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chess Tactic
In chess, a tactic is a sequence of moves that each makes one or more immediate threats ─ that is, a check, a material threat, a checkmating sequence threat, or the threat of another tactic ─ which culminates in the opponent being unable to respond to all of the threats without conceding an immediate benefit to the opponent. Most often, the immediate benefit takes the form of a material advantage or checkmating attack; however, some tactics are used for defensive purposes and can salvage material that would otherwise be lost, or to induce stalemate in an otherwise lost position. Tactics are usually contrasted with strategy, whereby the individual moves by themselves don't make indefensible threats, and the cumulative advantage of the moves takes longer to be capitalised on. In rough terms, the dichotomy can be summarised as tactics concerning short-term play and strategy concerning long-term play. Examples of strategic advantages are weaknesses in, compromised pawn structure i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blockade (chess)
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. A B , "lightning"] A #fast chess, fast form of chess with a very short #time control, time limit, usually three or five minutes per player for the entire game. With the advent of electronic #chess clock, chess clocks, the time remaining is often incremented by one or two seconds per move.Schiller 2003, p. 398 C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cross-check
In chess, a cross-check is a tactic in which a check is played in response to a check, especially when the original check is blocked by a piece that itself either delivers check or reveals a discovered check from another piece. Sometimes the term is extended to cover cases in which the king moves out of check and reveals a discovered check from another piece (this is also known as a ''royal check''); it does not generally apply to cases where the original checking piece is captured. The cross-check is an essential tactic in winning some endgames such as those with two queens versus one, or a queen and pawn versus a queen. In these cases, the defense usually tries for a perpetual check and sometimes the stronger side can stop it only by a cross-check. Examples A cross-check occurs from time to time in games. It is an essential tactic in winning endgames such as two queens versus one queen, or queen and pawn versus queen, where it is used to stop a series of checks from the op ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discovered Attack
In chess, a discovered attack is a direct attack revealed when one piece moves out of the way of another. Discovered attacks can be extremely powerful, as the piece moved can make a threat independently of the piece it reveals. Like many chess tactics, they often succeed because the opponent would be unable to meet two threats at once unless one of the attacked pieces can simultaneously move away from its own attack and capture the other attacking piece. While typically the consequence of a discovered attack is the gain of , they do not have to do this to be effective; the tactic can be used merely to gain a tempo. at MarkLowery.net If the discovered attack is a |
Initiative (chess)
Initiative in a chess position belongs to the player who can make threats that cannot be ignored, thus putting the opponent in the position of having to spend turns responding to threats rather than creating new threats. A player with the initiative will often seek to maneuver their pieces into more and more advantageous positions as they launch successive attacks. The player who lacks the initiative may seek to regain it through . Discussion Due to moving first, White starts the game with the initiative, but it can be lost in the opening by accepting a gambit. Players can also lose initiative by making unnecessary moves that allow the opponent to gain tempo, such as superfluous "preventive" (prophylactic) moves intended to guard against certain actions by the opponent, that nonetheless require no specific response by them. The concept of tempo is closely tied to initiative, as players can acquire the initiative or buttress it by gaining a tempo. The initiative is important in al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interference (chess)
In the game of chess, interference occurs when the line between an attacked piece and its defender is interrupted by sacrificially interposing a piece. It is a chess tactic which seldom arises, and is therefore often overlooked. Opportunities for interference are rare because the defended object must be more valuable than the sacrificed piece, and the interposition must itself present a threat. Huczek defines interference as a tactic involving blocking moves that obstruct lines of attack. This definition may be expanded by including blocking moves that disrupt lines of defense. Examples In diagram A, White to play will apparently be obliged to retreat the knight from f5, because the squares to which it could advance are all guarded. The interference move 1.Nd6+, however, interrupts the black rook's defense of the black queen. If Black plays either 1...cxd6 or 1...Bxd6, White will capture Black's queen. Therefore, Black has no better play than 1...Rxd6 2.exd6 Qxe2 3.Rxe2 Bxd6, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
King (chess)
The king (♔, ♚) is the most important piece in the game of chess. It may move to any adjoining square; it may also perform a move known as castling. If a player's king is threatened with capture, it is said to be in check, and the player must remove the threat of on the next move. 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 endgame or, rarely, the middlegame. In 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, only one king per player can be on the board at any time, and the kings are never removed from the board during the game. Placement and movement The white king starts on e1, on the first to the right of the queen from White's perspective. The black kin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Outline Of Chess
The following outline is provided as an overview of and topical guide to chess: Chess is a two-player board game played on a chessboard (a square-checkered board with 64 squares arranged in an eight-by-eight grid). In a chess game, each player begins with sixteen pieces: one king, one queen, two rooks, two knights, two bishops, and eight pawns. The object of the game is to checkmate the opponent's king, whereby the king is under immediate attack (in "check") and there is no way to remove or defend it from attack, or force the opposing player to forfeit. Nature of chess Chess can be described as all of the following: * Form of entertainment – form of activity that holds the attention and interest of an audience, or gives pleasure and delight. ** Form of recreation – activity of leisure, leisure being discretionary time. *** Form of play – voluntary, intrinsically motivated activity normally associated with recreational pleasure and enjoyment. **** Game &ndash ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 a safe square, interposing a piece between the threatening piece and the king, or capturing the threatening piece. If the player cannot get out of check by any of these options, the game ends in checkmate, and the player loses. Players cannot make any move that puts their own king in check. Many chess variants feature check, such as shogi, xiangqi, and janggi. Overview A check is the result of a move that places the opposing king under an immediate threat of capture by one (or occasionally 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, White has just played Be4+, simultane ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
