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Empress (chess)
The empress is a fairy chess piece that can move like a rook or a knight. It cannot jump over other pieces when moving as a rook but may do so when moving as a knight. The piece has acquired many names and is frequently called chancellor or marshal. Chess moves in this article use ''C'' as notation for the empress. Movement The empress can move as a rook or a knight. History and nomenclature The empress is one of the most simply described fairy chess pieces and as such has a long history and has gone by many names. It was first used in Turkish Great Chess, a large medieval variant of chess, where it was called the ''war machine'' (dabbabah; not to be confused with the piece more commonly referred to as the dabbaba today, which is the (2,0) leaper). It was introduced in the West with Carrera's chess from 1617, where it was called a ''champion'', and has been used in many chess variants since then. The name ''chancellor'' was introduced by Ben Foster in his large varian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chess Clt45
Chess is a board game for two players, called White and Black in chess, White and Black, each controlling an army of chess pieces in their color, with the objective to checkmate the opponent's King (chess), king. It is sometimes called international chess or Western chess to distinguish it from chess variant, related games, such as xiangqi (Chinese chess) and shogi (Japanese chess). The recorded history of chess goes back at least to the emergence of a similar game, chaturanga, in seventh-century History of India, India. The rules of chess as we know them today emerged in Europe at the end of the 15th century, with standardization and universal acceptance by the end of the 19th century. Today, chess is one of the world's most popular games, played by millions of people worldwide. Chess is an abstract strategy game that involves Perfect information, no hidden information and no use of dice or cards. It is played on a chessboard with 64 squares arranged in an eight-by-eight grid. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Queen (chess)
The queen (♕, ♛) is the most powerful chess piece, piece in the game of chess. It can move any number of squares vertically, horizontally or , combining the powers of the Rook (chess), rook and Bishop (chess), bishop. Each player starts the game with one queen, placed in the middle of the first next to the King (chess), king. Because the queen is the strongest piece, a pawn (chess), pawn is promotion (chess), promoted to a queen in the vast majority of cases. The predecessor to the queen is the ''Ferz (chess), ferz'', a weak piece only able to move or capture one step diagonally, originating from the Persian game of shatranj. The modern queen gained its power and its modern move in Spain in the 15th century during Isabella of Castile, Isabella I's reign, perhaps inspired by her great political power. Placement and movement The white queen starts on d1, while the black queen starts on d8. With the chessboard oriented correctly, the white queen starts on a white square a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Capablanca Chess
Capablanca chess (or Capablanca's chess) is a chess variant invented in the 1920s by World Chess Champion José Raúl Capablanca. It incorporates two new pieces and is played on a 10×8 board. Capablanca believed that chess would be played out in a few decades (meaning games between grandmasters would always end in draws). This threat of "draw death" for chess was his main motivation for creating a more complex version of the game. * The archbishop combines powers of a bishop and a knight. * The chancellor combines powers of a rook and a knight. The new pieces allow new strategies and possibilities that change the game. For example, the archbishop by itself can checkmate a lone king in the corner (when placed diagonally with one square in between). Setup and rules Capablanca proposed two opening setups for Capablanca chess. His final revision placed the archbishop between the and ; the chancellor between the and . The king moves three squares when castling instead of mov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Queen Versus Pawn
The chess endgame of a queen versus pawn (with both sides having no other pieces except the kings) is usually an easy win for the side with the queen. However, if the pawn has advanced to its seventh rank it has possibilities of reaching a draw, and there are some drawn positions with the pawn on the sixth rank. This endgame arises most often from a race of pawns to promote. The side with the queen is the ''attacker'' and the side with the pawn the ''defender''. Assume that the attacker has the move. If the pawn is not beyond its sixth rank, the attacker (to move) usually wins easily, but there are a few exceptions. The winning process is to either get the queen on a square in front of the pawn and getting the king over to help win the pawn or to check the defending king until it is forced in front of the pawn and using that tempo to bring the king closer, until it can assist in winning the pawn. After the pawn is won, the attacker has an elementary checkmate. Queen versus a p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fortress (chess)
In chess, a fortress is an endgame drawing technique in which the side behind in sets up a zone of protection that the opponent cannot penetrate. This might involve keeping the enemy king out of one's position, or a zone the enemy cannot force one out of (e.g. see the opposite-colored bishops example). An elementary fortress is a theoretically drawn (i.e. a ) position with reduced material in which a passive defense will maintain the draw. Fortresses commonly have the following characteristics: # Useful pawn are not possible. # If the stronger side has pawns, they are firmly blocked. # The stronger side's king cannot penetrate because it is either cut off or near the edge of the board. #Zugzwang positions cannot be forced because the defender has available. Fortresses pose a problem for computer chess: computers fail to recognize fortress-type positions and are unable to achieve the win against them despite claiming a winning advantage. Fortress in a corner Perhap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amazon (chess)
The amazon, also known as the queen+knight compound, is a fairy chess piece that can move like a queen or a knight. It may thus be considered the sum of all orthodox chess pieces other than the king and the pawn. The amazon can force checkmate on an enemy king without the help of any other friendly piece. Chess moves in this article use ''A'' as notation for the amazon. Movement The amazon's movement combines those of the queen and the knight. Thus, it may move to any square on the same rank, file, or diagonal as long as it does not jump, or it may move to any of the nearest squares not on the same rank, file, or diagonal. History The amazon is one of the most simply described fairy chess pieces and as such has a long history and has gone by many names. It was first used in Turkish Great Chess, a large medieval variant of chess, where it was called the ''giraffe''. Later, it was widely experimented with in the Middle Ages to replace the slow ferz, and it competed with the mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Draw (chess)
In chess, there are a number of ways that a game can end in a draw, neither player winning. Draws are codified by various rules of chess including stalemate (when the player to move is not in check but has no legal move), threefold repetition (when the same position occurs three times with the same player to move), and the fifty-move rule (when the last fifty successive moves made by both players contain no or pawn move). Under the standard FIDE rules, a draw also occurs in a dead position (when no sequence of legal moves can lead to checkmate), most commonly when neither player has sufficient to checkmate the opponent. Unless specific tournament rules forbid it, players may agree to a draw at any time. Ethical considerations may make a draw uncustomary in situations where at least one player has a reasonable chance of winning. For example, a draw could be called after a move or two, but this would likely be thought unsporting. In the 19th century, some tournaments, notably ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perpetual Check
In the game of chess, perpetual check is a situation in which one player can a draw by an unending series of checks. This typically arises when the player who is checking cannot deliver checkmate, and failing to continue the series of checks gives the opponent at least a chance to win. A draw by perpetual check is no longer one of the rules of chess; however, such a situation will eventually allow a draw claim by either threefold repetition or the fifty-move rule. Players usually agree to a draw long before that, however. Perpetual check can also occur in other forms of chess, although the rules relating to it might be different. For example, giving perpetual check is not allowed in shogi and xiangqi, where doing so leads to an automatic loss for the giver. Examples In this diagram, Black is ahead a rook, a bishop, and a pawn, which would normally be a decisive advantage. But White, to move, can draw by perpetual check: : 1. Qe8+ Kh7 : 2. Qh5+ Kg8 : 3. Qe8+ etc. The same po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chess Piece Relative Value
In chess, a relative value (or point value) is a standard value conventionally assigned to each piece. Piece valuations have no role in the rules of chess but are useful as an aid to assessing a position. Valuation systems almost always assign a value of 1 point to the pawn, typically as its average value in the starting position. The best known system assigns 1 point to a pawn, 3 points to a knight or bishop, 5 points to a rook and 9 points to a queen. Valuation systems provide only a rough idea of the state of play. The actual value of a piece depends on the game situation and can differ considerably from the standard valuation. A well posted bishop may be more valuable than a passive rook, while a badly placed piece may be completely trapped and thus almost worthless. Chess engines conventionally output their assessment of a position in terms of 'centipawns' (cp), where 100 cp = 1 pawn. In addition to the balance, this assessment incorporates strategic features of the positio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chess With Different Armies
Chess with different armies (or Betza's Chess or Equal Armies) is a chess variant invented by Ralph Betza in 1979. Two sides use different sets of fairy pieces. There are several armies of equal strength to choose from, including the standard FIDE army. In all armies, kings and pawns are the same as in FIDE chess, but the four other pieces are different. Rules and armies Before the game players choose their armies in a certain way, predefined by tournament rules. This can be done either randomly or secretly by both players. Each player has a choice of 4 armies: the ''Fabulous FIDEs'', which are the standard chess pieces, the ''Colorbound Clobberers'', the ''Nutty Knights'', and the ''Remarkable Rookies''. All armies are designed to be equal in strength but have significantly different properties. Kings and pawns move the same as in chess for all armies. Pawns can only promote to pieces of either army on the board at the start. Castling is done as in standard chess with the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ralph Betza
Ralph Betza (born 1945) is a FIDE Master and inventor of chess variants such as Chess with different armies, Avalanche chess, and Way of the Knight. Invented chess variants * Multiplayer Chess (date unknown) * High-Low Chess (1968) * Strange Relay Chess (1970s) * Coordinate Chess (or Co-Chess) (1973) * Conversion Chess (1973) * Co-Relay Chess (1973) * Double Conversion Chess (1973) * Heterocoalescence Chess (1973) by Philip Cohen, based on an idea by Betza * Inverter Chess (or Switch Chess) (1973) * Metamorphosis (c. 1973) * Pinwheel Chess (1973) * Reversion Conversion Chess (1973) * Transportation Chess (or Transchess) (1973) * Watergate Chess (1973) * Weak! (1973) * Biflux Chess (1974) a variant of Co-Chess * Brownian Motion Chess (1974) * Cassandra Chess (1974) * Orbital Chess (1974) * Overloader/Restorer Chess (O/R Chess) (1974) * Put-back Transchess (1974) * Almost Chess (1977) * Ambition Chess (1977) * Autorifle Chess (1977) after Bill Rawlings * Avalanche Chess ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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