"either (0-0) or (0-0-0). The king slides two cells when castling short; three cells when castling long. Other standard chess castling rules and restrictions apply. Pawns start on the players' third . A pawn moves forward to an adjacent cell, or (as its first-move option), two cells forward in the same direction. A pawn captures diagonally forward to the sides (to a cell of the same colour on which the pawn stands). Invented by Yakov Brusky in 1966. The game features an irregular hexagon board comprising 84 cells. Piece movement rules are the same as Gliński's chess, except for the"
"Bishop (chess) A bishop (♗,♝) is a piece in the board game of chess. Each player begins the game with two bishops. One starts between the and the king, the other between the and the queen. The starting squares are c1 and f1 for White's bishops, and c8 and f8 for Black's bishops. The bishop has no restrictions in distance for each move, but is limited to diagonal movement. Bishops, like all other pieces except the knight, cannot jump over other pieces. A bishop captures by occupying the square on which an enemy piece sits. The bishops may be differentiated"
"the board and replacing it with the moving piece. If a friendly piece intervenes, the moving piece must stop short of that square; if the friendly piece is adjacent, the moving piece may not move in that direction at all. A king (玉/王) moves one square in any direction, orthogonal or diagonal. A rook (飛) moves any number of squares in an orthogonal direction. A bishop (角) moves any number of squares in a diagonal direction. Because they cannot move orthogonally, the players' unpromoted bishops can reach only half the squares of the board, unless one is captured and then"
"moves to play a white or black color game. In an with action on both sides of the board, the bishop tends to be stronger because of its long range. This is especially true in the endgame; if passed pawns race on opposite sides of the board, the player with a bishop usually has better winning chances than a player with a knight. A king and a bishop is not sufficient material to checkmate an opposing lone king, but two bishops and a king checkmate an opposing lone king easily. Rooks have more scope of movement on half-open files (ones"
"the six orthogonals. The bishop (B; ""diplomacy"") may range along any one of the six diagonals, and can reach only one-third of the board. (Compare Gliński's hexagonal chess, which has three bishops for this very reason.) A promoted bishop (+B; ""witchcraft"") gains the power to step to any adjacent (orthogonal) cell. That is, it may move as a bishop or as a king, and can therefore reach every cell on the board. The gold general, or simply 'gold' (G; ""financial influence"") may step to one of the orthogonal forward or side cells (9, 11, 1, or 3 o'clock), or to"
"according to which wing they begin on, i.e. the ""king's bishop"" and ""queen's bishop"". As a consequence of its diagonal movement, each bishop always remains on either the white or black squares, and so it is also common to refer to them as ""light-squared"" or ""dark-squared"" bishops. A rook is generally worth about two pawns more than a bishop (see Chess piece relative value and the exchange). The bishop has access to only half of the squares on the board, whereas all squares of the board are accessible to the rook. On an empty board, a rook always attacks fourteen"
"the side in a castle with three generals. Leaving a king on its original square (居玉 ""igyoku"" or ""sitting king"") is a particularly dangerous position. Both players can move the rook pawn forward (P-26), or, more commonly, advance the pawn above and to the right of the bishop (P-76). The former is known as a ""rook opening"" and the latter a ""bishop opening."" With a bishop opening, it's common to trade bishops by having one capture the other. This allows each player to put their newly captured bishop into play anywhere on the board, although care must be taken to"
"the pawns are facing each other and blocked, the result often depends on which color the bishop is on. If the bishop is on the same color as its pawn, the rook almost always wins. If the bishop is on the color of the opposing pawn it has good drawing chances . Bibliography Wrong bishop The wrong bishop is a situation in chess endgame when a bishop on the other color of square of the chessboard would either win a game instead of draw or salvage a draw from an inferior position ; in other words, a bishop is unable"
"knight is usually one towards the center. Knights are usually brought into play slightly sooner than the bishops and much sooner than the rooks and the queen. Because of its move pattern, the knight is especially well-suited for executing a fork. In the numbered diagram, the numbers represent how many moves it takes for a knight starting from f5 to reach each square on the chessboard. A knight is approximately equal in strength and value to a bishop. The bishop has longer range, but is restricted to only half the squares on the board. Since the knight can jump over"
"be inferior to a knight which can jump over them. A knight check cannot be blocked but a bishop check can. Furthermore, on a crowded board a knight has many tactical opportunities to fork two enemy pieces. A bishop can fork, but opportunities are more rare. One such example occurs in the position illustrated, which arises from the Ruy Lopez: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0-0 b5 6.Bb3 Be7?! 7.d4 d6 8.c3 Bg4 9.h3!? Bxf3 10.Qxf3 exd4 11.Qg3 g6 12.Bh6! In the middlegame, a player with only one bishop should generally place friendly pawns on squares of"
"In the position at right, Black loses immediately. Black, on move, must give way with either bishop or king, allowing White to move e7, winning, or else play the hopeless 1... Bxd6 2. Kxd6. If White is to move in this position, he plays a waiting move such as 1. Kc6, placing Black in the same predicament (1... Ke8 2. Kc7#) . Draws are possible with more pawns. This is an example of a drawing fortress with opposite-colored bishops when three pawns behind. White simply keeps his bishop on the h3 to c8 diagonal . (See Fortress (chess)#Opposite-colored bishops.) Positions"
"which permit the king to be captured—these moves are legal), and draw after 40 moves by each side. In addition, the bishop is replaced by a ""bad bishop"" that has the additional option of moving to any adjacent empty square on its turn, allowing it to change color. This variant is intended to be easy to write computer programs to play and harder for expert human players of standard chess, while still retaining the essential character of the game: several computer tournaments have been held. Besides Los Alamos chess, there are other chess variants played on a 6×6 board. The"
"Wrong bishop The wrong bishop is a situation in chess endgame when a bishop on the other color of square of the chessboard would either win a game instead of draw or salvage a draw from an inferior position ; in other words, a bishop is unable to guard squares of the other color. This most commonly occurs with a bishop and one of its rook pawns, but it also occurs with a rook versus a bishop, a rook and one rook pawn versus a bishop, and possibly with a rook and one bishop pawn versus a bishop. White wins"
"Bishop and knight checkmate The bishop and knight checkmate in chess is the checkmate of a lone king which can be forced by a bishop, knight, and king. With the stronger side to move and with perfect play, checkmate can be forced in at most thirty-three moves from any starting position where the defender cannot quickly win one of the pieces. The exceptions occur when (1) the defending king may be forking the bishop and knight so that one of them is lost on the next move, or (2) the knight may be trapped in a corner by the defending"
"off the right edge of the board in cylinder chess, it reappears on the left edge; when a piece goes off the left edge, it reappears on the right edge. It is legal to move a rook from a3 to h3, even if there is a piece on b3, since the rook can move left from a3. A bishop on c1 can go to h4, by moving from c1 to a3, and then going up and left from a3 to h4. Moves that do not change the position, like 1.Ra3-a3 (assuming the 3rd rank is empty), are usually not allowed,"
"Bishop's Opening The Bishop's Opening is a chess opening that begins with the moves: White attacks Black's f7-square and prevents Black from advancing his d-pawn to d5. By ignoring the beginner's maxim ""develop knights before bishops"", White leaves his f-pawn unblocked, allowing the possibility of playing f2–f4. The f2–f4 gives the Bishop's Opening an affinity with the King's Gambit and the Vienna Game, two openings that share this characteristic. The Bishop's Opening can transpose into either of these openings, and in particular a favorable variation of the King's Gambit, but with care Black can circumvent this. Transpositions into Giuoco Piano"
"knights cannot. A bishop and knight can force mate, but with far greater difficulty than two bishops. In certain positions a bishop can by itself lose a move (see triangulation and tempo), while a knight can never do so. The bishop is capable of skewering or pinning a piece, while the knight can do neither. A bishop can in some situations hinder a knight from moving. In these situations, the bishop is said to be ""dominating"" the knight. On the other hand, in the opening and middlegame a bishop may be hemmed in by pawns of both players, and thus"
"A and the bishop finishes on board B (see diagram). A move in Alice Chess has two basic stipulations: the move must be legal on the board on which it is played, and the square transferred to on the opposite board must be vacant. (Consequently, capture is possible only on the board upon which a piece currently stands: pieces on board A can capture only pieces on board A; pieces on board B can capture only pieces on board B.) After capture, the capturing piece transfers to the opposite board the same as a non-capturing move. To demonstrate, if the"
"chess-like games where it is the elephant that normally corresponds to the chess bishop. Player turns pass clockwise around the board. The pawn also moves as in chess, but does not have the option of an initial double-step move. Each of the four players' pawns moves and captures in a different direction along the board, as implied by the initial setup. For example, the red pawns which start on the g-file move left across the board, promoting on the a-file. Also, pawn promotion rules are different: one must promote to the piece that starts on the same (or ) of"
"the color that the bishop cannot move to. This allows the player to control squares of both colors, allows the bishop to move freely among the pawns, and helps fix enemy pawns on squares on which they can be attacked by the bishop. Such a bishop is often referred to as a ""good"" bishop. Conversely, a bishop which is impeded by friendly pawns is often referred to as a ""bad bishop"" (or sometimes, disparagingly, a ""tall pawn""). The black light-squared bishop in the French Defense is a notorious example of this concept. However, a ""bad"" bishop need not always be"
"of the board and a different starting setup. In the citadel game, if a king reaches the citadel, a draw is forced. The starting position is essentially obtained from that of orthodox chess by cutting the board in half and bending the two halves to join at the ends. Two lines are marked on opposite sides of the board, and each set of pieces is positioned so as to straddle this line. The king and queen start on the innermost ring, with, as is the case in square chess, the queen on a square of the same colour; the bishops"
"game was drawn twelve moves later. The bishop will remain on the c8–h3 diagonal and sacrifice itself for the e-pawn if it advances to e6. (Note that 1...Bb3+ 2.Ke7 Bxf7 does not work because of 3.h6+!) . In this game from the 1971 World Chess Championship Candidate's Match, the second game between Bobby Fischer and Mark Taimanov, Black could have drawn the game because of the wrong rook pawn. One way is: In the actual game, Black made an incorrect move (81...Ke4) and lost because a knight has a hard time defending against rook pawns , . (Fischer went on"
"bishops and a knight versus a rook (requires up to 68 moves); and two rooks and a minor piece versus a queen (requires up to 82 moves for the bishop, 101 moves for the knight). A three-point material advantage can also result in a forced win, in some cases. For instance, some of the cases of a queen versus two minor piece are such positions (as mentioned above). In addition, the four minor pieces win against a queen. Two bishops win against a knight, but it takes up to 66 moves if a bishop is initially trapped in a corner"
"updated rules. The starting setup is the same as for medieval Courier Chess. The king, queen, courier (bishop), knight, and rook have their modern powers. The bishop (or archer) can move one square diagonally, or leap diagonally to the second square. The fool, standing beside the queen, moves one square in any direction. The sage, standing beside the king, combines the powers of the fool and the knight. The pawn moves like the modern pawn, except that after reaching the farthest rank it must remain there for two moves before taking up its new career as a piece. Castling is"
"In most chess positions, a bishop is worth slightly more than a knight because of its longer range of movement. As a chess game progresses, pawns tend to get traded, removing support points from the knight and opening up lines for the bishop. This generally leads to the bishop's advantage increasing over time. Traditional chess theory espoused by masters such as Wilhelm Steinitz and Siegbert Tarrasch puts more value on the bishop than the knight. In contrast, the hypermodern school favored the knight over the bishop. Modern theory is that it depends on the position, but that there are more"
"Wrong rook pawn In chess endgames with a bishop, a pawn that is a may be the wrong rook pawn. With a single bishop, the result of a position may depend on whether or not the bishop controls the square on the chessboard on which the pawn would promote. Since a side's rook pawns promote on opposite-colored squares, one of them may be the ""wrong rook pawn"" . This situation is also known as having the ""wrong-colored bishop"" or ""wrong bishop"", i.e. the bishop is on the wrong colored squares in relation to the rook pawn . In many cases,"
"attacking possibilities, and thus is a good bishop vis-à-vis Black's bad bishop. Black resigned after another ten moves. A bishop may be ""fianchettoed"", for example after moving the g2 pawn to g3 and the bishop on f1 to g2. This can form a strong defense for the castled king on g1 and the bishop can often exert strong pressure on the long diagonal (here h1–a8). A fianchettoed bishop should generally not be given up lightly, since the resulting in the pawn formation may prove to be serious weaknesses, particularly if the king has castled on that side of the board."
"Fianchetto In chess, the fianchetto (; ""little flank"") is a pattern of development wherein a bishop is developed to the second rank of the adjacent knight file, the knight pawn having been moved one or two squares forward. The fianchetto is a staple of many ""hypermodern"" openings, whose philosophy is to delay direct occupation of the center with the plan of undermining and destroying the opponent's central outpost. It also regularly occurs in Indian defences. The fianchetto is less common in open games (1.e4 e5), but the king's bishop is sometimes fianchettoed by Black in the Spanish Game or by"
"two ranks in front of the pawns, with both defending against a pawn advance (here d6 by White) to the same color square as the bishop. The defending bishop must maintain an attack on the pawn on the same color square as itself, so that the attacking king is not allowed to advance. If White pushes the other (unattacked) pawn, Black's bishop sacrifices itself for both pawns, with a draw. (If the second pawn is protected and advances instead, the position is also a draw.) In the diagram position, Black on move passes (i.e. a waiting move that maintains the"
"Opposite-colored bishops endgame The opposite-colored bishops endgame is a chess endgame in which each side has a single bishop, but the bishops reside on opposite-colored squares on the chessboard, thus cannot attack or block each other. Without other pieces (but with pawns) these endings are notorious for their tendency to result in a draw. These are the most difficult endings in which to convert a small material advantage to a win. With additional pieces, the stronger side has more chances to win, but not as many as if the bishops were on the same color. Many players in a poor"
"bishop and there is a square between it and the king); or moving the king to a square where it is not under attack. Castling is not a permissible response to a check. The object of the game is to checkmate the opponent; this occurs when the opponent's king is in check, and there is no legal way to remove it from attack. It is illegal for a player to make a move that would put or leave the player's own king in check. In casual games it is common to announce ""check"" when putting the opponent's king in check,"
"on the two dice. For example, a player rolling a one and a two may move either a pawn or a knight. A player who rolls doubles (the same number on both dice) may play any legal move. Otherwise, standard chess rules apply, with these exceptions: Here is a sample game of dice chess. White rolls doubles, allowing her to play any move, and selects 1.e4. Black rolls a two and a three; no bishop move being possible, he plays 1...Nc6. White rolls a three and a four, and plays 2.Bc4. Black rolls a four and a five; since no"
"a draw with either side to move. Black simply keeps his king on the a8-, a7-, or b8-squares (or b7 if the pawn advances) to keep the pawn from promoting. A draw because of stalemate is also possible. If the bishop were on the other color it could force the black king out of the corner and the pawn could promote and win . A rook and a rook pawn always win against the wrong bishop, as in this position. The defender has the wrong bishop if it is the one on the same color as the pawn's promotion square."