//////////////////
// INITIALIZATION
- constructor(fen) {
- // In printDiagram() fen isn't supply because only getPpath() is used
- if (fen)
- this.re_init(fen);
- }
-
// Fen string fully describes the game state
- re_init(fen) {
+ constructor(fen) {
+ if (!fen)
+ // In printDiagram() fen isn't supply because only getPpath() is used
+ // TODO: find a better solution!
+ return;
const fenParsed = V.ParseFen(fen);
this.board = V.GetBoard(fenParsed.position);
this.turn = fenParsed.turn[0]; //[0] to work with MarseilleRules
"In the shadow": "In the shadow",
"Give three checks": "Give three checks",
"Keep antiking in check": "Keep antiking in check",
- "King crosses the board": "King crosses the board",
+ "Kings cross the board": "Kings cross the board",
"Laws of attraction": "Laws of attraction",
"Long jumps over pieces": "Long jumps over pieces",
"Lose all pieces": "Lose all pieces",
"Mate any piece": "Mate any piece",
"Mate the knight": "Mate the knight",
"Middle battle": "Middle battle",
- "Move like a knight": "Move like a knight",
"Move twice": "Move twice",
"Neverending rows": "Neverending rows",
"Pawns move diagonally": "Pawns move diagonally",
"Shoot pieces": "Shoot pieces",
"Squares disappear": "Squares disappear",
"Standard rules": "Standard rules",
+ "The knight transfers its powers": "The knight transfers its powers",
"Unidentified pieces": "Unidentified pieces"
};
"In the shadow": "En la sombra",
"Give three checks": "Dar tres jaques",
"Keep antiking in check": "Mantener el antirey en jaque",
- "King crosses the board": "El rey cruza el tablero",
+ "Kings cross the board": "Los reyes cruzan el tablero",
"Laws of attraction": "Las leyes de las atracciones",
"Long jumps over pieces": "Saltos largos sobre las piezas",
"Lose all pieces": "Perder todas las piezas",
"Mate any piece": "Matar cualquier pieza",
"Mate the knight": "Matar el caballo",
"Middle battle": "Batalla media",
- "Move like a knight": "Moverse como un caballo",
"Move twice": "Mover dos veces",
"Neverending rows": "Filas interminables",
"Pawns move diagonally": "Peones se mueven en diagonal",
"Shoot pieces": "Tirar de las piezas",
"Squares disappear": "Las casillas desaparecen",
"Standard rules": "Reglas estandar",
+ "The knight transfers its powers": "El caballo transfiere sus poderes",
"Unidentified pieces": "Piezas no identificadas"
};
"In the shadow": "Dans l'ombre",
"Give three checks": "Donnez trois échecs",
"Keep antiking in check": "Gardez l'antiroi en échec",
- "King crosses the board": "Le roi traverse l'échiquier",
+ "Kings cross the board": "Les rois traversent l'échiquier",
"Laws of attraction": "Les lois de l'attraction",
"Long jumps over pieces": "Sauts longs par dessus les pièces",
"Lose all pieces": "Perdez toutes les pièces",
"Mate any piece": "Matez n'importe quelle pièce",
"Mate the knight": "Matez le cavalier",
"Middle battle": "Bataille du milieu",
- "Move like a knight": "Bougez comme un cavalier",
"Move twice": "Jouer deux coups",
"Neverending rows": "Rangées sans fin",
"Pawns move diagonally": "Les pions vont en diagonale",
"Shoot pieces": "Tirez sur les pièces",
"Squares disappear": "Les cases disparaissent",
"Standard rules": "Règles usuelles",
+ "The knight transfers its powers": "Le cavalier transfère ses pouvoirs",
"Unidentified pieces": "Pièces non identifiées"
};
Orthodox rules apply, but giving three checks win the game.
Since it is easier than checkmate, most games would end in this way.
+p.
+ In the diagram position, 2.Bb5+ c6 3.Bxc6+ is an excellent
+ sacrifice because now only one check will give white victory.
+
+figure.diagram-container
+ .diagram
+ | fen:rnbqkbnr/ppp1pppp/3p4/8/4P3/8/PPPP1PPP/RNBQKBNR:
+ figcaption.
+ After the moves 1.e4 d6??
+
h3 Source
p
la partida. Es más fácil que de matar, entonces la mayoría de las
partidas deberían terminar así.
+p.
+ En la posición del diagrama, 2.Bb5+ c6 3.Bxc6+ es un excelente sacrificio,
+ porque ahora un solo jaque garantizará la victoria de las blancas.
+
+figure.diagram-container
+ .diagram
+ | fen:rnbqkbnr/ppp1pppp/3p4/8/4P3/8/PPPP1PPP/RNBQKBNR:
+ figcaption.
+ Despues de las jugadas 1.e4 d6??
+
h3 Fuente
p
la partie. C'est plus facile que de mater,
donc la plupart des parties devraient s'achever ainsi.
+p.
+ Dans la position du diagramme, 2.Bb5+ c6 3.Bxc6+ est un excellent sacrifice
+ car maintenant un unique échec assurera la victoire aux blancs.
+
+figure.diagram-container
+ .diagram
+ | fen:rnbqkbnr/ppp1pppp/3p4/8/4P3/8/PPPP1PPP/RNBQKBNR:
+ figcaption.
+ Après les coups 1.e4 d6??
+
h3 Source
p
-p TODO
+p.boxed
+ | A new piece appears: the grasshopper (G), jumping over a piece and landing right after.
+
+p.
+ Each player begins with eight grasshoppers between the first rank and the
+ pawns on the third rank. The grasshopper moves potentially in all
+ directions, but needs the help of a piece for its movement :
+ it jumps over the first encountered piece (of any color),
+ and land on the very next square.
+ This square must be either empty or occupied by an enemy piece (which is eaten).
+
+figure.diagram-container
+ .diagram
+ | fen:8/5g2/ppppp3/8/2G2k2/1PPP4/4R3/8 a2,c2,c7,f7,g4:
+ figcaption Possible grasshopper moves from c4.
+
+p.
+ Note: grasshopper moves are not symmetric.
+ On the diagram the black grasshopper cannot capture on c4.
+
+h3 Source
+
+p
+ a(href="https://www.chessvariants.com/dpieces.dir/grashopper.html") Grasshopper Chess
+ | on chessvariants.com.
+ | This variant is also playable
+ a(href="https://greenchess.net/rules.php?v=grasshopper") on greenchess.net
+ | (with a deterministic initial position).
-p TODO
+p.boxed
+ | Aparece una nueva pieza: el saltamontes, saltando sobre una pieza
+ | aterrizar justo detrás.
+
+p.
+ Notación: 'G' como la primera carta de grasshopper,
+ que significa saltamontes en inglés.
+
+p.
+ Cada jugador comienza con ocho saltamontes colocadas entre las primeras
+ fila y los peones en el tercero.
+ El saltamontes se mueve potencialmente en todas las direcciones,
+ pero necesita la ayuda de una pieza para su movimiento:
+ el salta sobre la primera pieza encontrada (de cualquier color),
+ y aterriza en la casilla justo detrás.
+ Este última debe estar vacío u ocupado por el enemigo (que se encuentra comido).
+
+figure.diagram-container
+ .diagram
+ | fen:8/5g2/ppppp3/8/2G2k2/1PPP4/4R3/8 a2,c2,c7,f7,g4:
+ figcaption Posibles movimientos de saltamontes desde c4.
+
+p.
+ Nota: los movimientos de saltamontes no son simétricos.
+ En el diagrama, el saltamontes negro no puede capturar en c4.
+
+h3 Fuente
+
+p
+ | La
+ a(href="https://www.chessvariants.com/dpieces.dir/grashopper.html") variante Grasshopper
+ | en chessvariants.com.
+ | También podemos jugarlo
+ a(href="https://greenchess.net/rules.php?v=grasshopper") en greenchess.net
+ | (con una posición inicial determinista).
-p TODO
+p.boxed
+ | Une nouvelle pièce apparaît : la sauterelle, sautant par dessus une pièce
+ | pour atterrir juste derrière.
+
+p.
+ Notation: 'G' comme la première lettre de grasshopper,
+ signifiant sauterelle en anglais.
+
+p.
+ Chaque joueur commence avec huit sauterelles placées entre la première
+ rangée et les pions sur la troisième.
+ La sauterelle se déplace potentiellement dans toutes les directions,
+ mais a besoin de l'aide d'une pièce pour son mouvement :
+ elle saute par dessus la première pièce rencontrée (de n'importe quelle couleur),
+ et atterrit sur la case située juste derrière.
+ Cette dernière doit être vide ou occupée par l'ennemi (qui se retrouve mangé).
+
+figure.diagram-container
+ .diagram
+ | fen:8/5g2/ppppp3/8/2G2k2/1PPP4/4R3/8 a2,c2,c7,f7,g4:
+ figcaption Possibles coups de sauterelle depuis c4.
+
+p.
+ Note : les coups de sauterelles ne sont pas symétriques.
+ Sur le diagramme la sauterelle noire ne peut pas capturer en c4.
+
+h3 Source
+
+p
+ | La
+ a(href="https://www.chessvariants.com/dpieces.dir/grashopper.html") variante Grasshopper
+ | sur chessvariants.com.
+ | On peut y jouer également
+ a(href="https://greenchess.net/rules.php?v=grasshopper") sur greenchess.net
+ | (avec une position initiale déterministe).
-p TODO
+p.boxed
+ | One of the pawns of each side is a disguised queen.
+ | She is revealed only when not moving like a pawn.
+
+p.
+ The hidden queen cannot give check (because the opponent cannot see her nature),
+ but she could sometimes capture the king. This capture ends the game.
+ Except that, everything goes as in orthodox chess.
+
+figure.diagram-container
+ .diagram
+ | fen:rnbqkbnr/ppp1tppp/8/3P4/8/8/TPPP1PPP/RNBQKBNR:
+ figcaption After 1.e4 d5 2.exd5
+
+p.
+ In the diagram position, if the black hidden queen is on e7 then
+ they can play 2...Qxe1, revealing her identity and winning at the same time.
+
+h3 Source
+
+p
+ a(href="https://dames-cachees.herokuapp.com/rules") This website
+ | introduces the rules and allow to play in live,
+ | with a deterministic initial position but a user-defined
+ | location of the hiden queen.
-p TODO
+p.boxed
+ | Uno de los peones de cada lado es en realidad una dama (disfrazada).
+ | Esta se revela cuando no se mueve como un peón.
+
+p.
+ La dama oculta no da jaque (porque el oponente no ve su naturaleza),
+ pero eventualmente puede capturar al rey. Esta captura termina el juego.
+ Aparte de eso, todo va como el ajedrez ortodoxo.
+
+figure.diagram-container
+ .diagram
+ | fen:rnbqkbnr/ppp1tppp/8/3P4/8/8/TPPP1PPP/RNBQKBNR:
+ figcaption Después de 1.e4 d5 2.exd5
+
+p.
+ En la posición del diagrama, si la dama negra escondida está en e7
+ entonces pueden jugar 2...Dxe1, ciertamente revelando su identidad pero
+ ganando la victoria al pasar.
+
+h3 Fuente
+
+p
+ a(href = "https://dames-cachees.herokuapp.com/rules") Este sitio web
+ | presenta las reglas y te permite jugar en vivo,
+ | con una posición inicial determinista pero dejando elegir
+ | la ubicación de la dama escondida
-p TODO
+p.boxed
+ | Un des pions de chaque camp est en réalité une dame (déguisée).
+ | Celle-ci est révélée lorsqu'elle ne se déplace pas comme un pion.
+
+p.
+ La dame cachée ne donne pas échec (car l'adversaire ne voit pas sa nature),
+ mais elle peut éventuellement capturer le roi. Cette capture met fin à la partie.
+ À part ça tout se déroule comme aux échecs orthodoxes.
+
+figure.diagram-container
+ .diagram
+ | fen:rnbqkbnr/ppp1tppp/8/3P4/8/8/TPPP1PPP/RNBQKBNR:
+ figcaption Après 1.e4 d5 2.exd5
+
+p.
+ Dans la position du diagramme, si la dame cachée des noirs est en e7
+ alors ils peuvent jouer 2...Dxe1, révélant certes son identité mais
+ emportant la victoire au passage.
+
+h3 Source
+
+p
+ a(href="https://dames-cachees.herokuapp.com/rules") Ce site web
+ | présente les règles et permet de jouer en direct,
+ | avec une position initiale déterministe mais en laissant choisir
+ | l'emplacement de la dame cachée.
-p TODO
+p.boxed
+ | The king moves like a knight, and the knights like a king.
+ | The goal is still to checkmate the king.
+
+p "Knights moving like a king" are quite logically called "commoners".
+
+p Castling is still permitted, under the same conditions as in orthodox chess.
+
+figure.diagram-container
+ .diagram.diag12
+ | fen:7k/8/8/8/8/1r6/8/3K1r2:
+ .diagram.diag22
+ | fen:rcbqk1cr/pppp1ppp/8/2b1p3/2B1P3/5Q2/PPPP1PPP/RCB1K1CR:
+ figcaption.
+ Left: Royal knight version of the two-rooks mate.
+ Right: After 1.e4 e5 2.Bc4 Bc5 3.Qf3
+
+p.
+ On the right diagram, the threat is 4.Bxf7+ Cxf7 5.Qxf7+,
+ with more material and a winning attack.
+
+h3 Source
+
+p
+ a(href="https://www.chessvariants.com/diffobjective.dir/knightmate.html")
+ | Knightmate Chess
+ | on chessvariants.com.
+ | This variant is also playable
+ a(href="https://greenchess.net/rules.php?v=knightmate") on greenchess.net
+ | (with a deterministic initial position).
-p TODO
+p.boxed
+ | El rey se mueve como un caballo, y los caballos como reyes.
+ | El objetivo sigue siendo matar al rey.
+
+p.
+ Los "caballos que se mueven como reyes" son entonces lógicamente
+ llamado "plebeyos", señaló 'C' para "commoner" en inglés.
+
+p El enroque todavía es posible, bajo las mismas condiciones que el ajedrez ortodoxo
+
+figure.diagram-container
+ .diagram.diag12
+ | fen:7k/8/8/8/8/1r6/8/3K1r2:
+ .diagram.diag22
+ | fen:rcbqk1cr/pppp1ppp/8/2b1p3/2B1P3/5Q2/PPPP1PPP/RCB1K1CR:
+ figcaption.
+ Izquierda: versión "caballo real" del mate de las dos torres.
+ Derecha: después de 1.e4 e5 2.Bc4 Bc5 3.Qf3
+
+p.
+ En el diagrama de la derecha, la amenaza es 4.Bxf7+ Cxf7 5.Qxf7+
+ con la ventaja material y un ataque ganador.
+
+h3 Fuente
+
+p
+ | La
+ a(href="https://www.chessvariants.com/diffobjective.dir/knightmate.html")
+ | variante Knightmate
+ | en chessvariants.com.
+ | También podemos jugarlo
+ a(href="https://greenchess.net/rules.php?v=knightmate") en greenchess.net
+ | (con una posición inicial determinista).
-p TODO
+p.boxed
+ | Le roi se déplace comme un cavalier, et les cavaliers comme des rois.
+ | l'objectif est encore de mater le roi.
+
+p.
+ Les "cavaliers se déplaçant comme des rois" sont alors assez logiquement
+ appelés des "roturiers", notés 'C' pour "commoner" en anglais.
+
+p Le roque est toujours possible, sous les mêmes conditions qu'aux échecs orthodoxes.
+
+figure.diagram-container
+ .diagram.diag12
+ | fen:7k/8/8/8/8/1r6/8/3K1r2:
+ .diagram.diag22
+ | fen:rcbqk1cr/pppp1ppp/8/2b1p3/2B1P3/5Q2/PPPP1PPP/RCB1K1CR:
+ figcaption.
+ Gauche : Version "cavalier royal" du mat des deux tours.
+ Droite : Après 1.e4 e5 2.Bc4 Bc5 3.Qf3
+
+p.
+ Sur le diagramme de droite, la menace est 4.Bxf7+ Cxf7 5.Qxf7+
+ avec l'avantage matériel et une attaque gagnante.
+
+h3 Source
+
+p
+ | La
+ a(href="https://www.chessvariants.com/diffobjective.dir/knightmate.html")
+ | variante Knightmate
+ | sur chessvariants.com.
+ | On peut y jouer également
+ a(href="https://greenchess.net/rules.php?v=knightmate") sur greenchess.net
+ | (avec une position initiale déterministe).
}
getPpath(b) {
- if (b[1] == 'k' && this.checkFlags[b[0]] > 0)
+ // TODO: !!this.checkFlags condition for printDiagram, but clearly not good.
+ // This is just a temporary fix.
+ if (b[1] == 'k' && this.checkFlags && this.checkFlags[b[0]] > 0)
return "Check3/" + b[0] + 'k_' + this.checkFlags[b[0]];
return b;
}
import { randInt } from "@/utils/alea";
export const VariantRules = class GrasshopperRules extends ChessRules {
+ static get HasEnpassant() {
+ return false;
+ }
+
static get GRASSHOPPER() {
return "g";
}
}
}
+ getPotentialPawnMoves([x, y]) {
+ const color = this.turn;
+ let moves = [];
+ const [sizeX, sizeY] = [V.size.x, V.size.y];
+ const shiftX = color == "w" ? -1 : 1;
+ const lastRank = color == "w" ? 0 : sizeX - 1;
+
+ const finalPieces =
+ x + shiftX == lastRank
+ ? [V.ROOK, V.KNIGHT, V.BISHOP, V.QUEEN, V.GRASSHOPPER]
+ : [V.PAWN];
+ if (this.board[x + shiftX][y] == V.EMPTY) {
+ // One square forward
+ for (let piece of finalPieces) {
+ moves.push(
+ this.getBasicMove([x, y], [x + shiftX, y], {
+ c: color,
+ p: piece
+ })
+ );
+ }
+ // No 2-squares jump
+ }
+ // Captures
+ for (let shiftY of [-1, 1]) {
+ if (
+ y + shiftY >= 0 &&
+ y + shiftY < sizeY &&
+ this.board[x + shiftX][y + shiftY] != V.EMPTY &&
+ this.canTake([x, y], [x + shiftX, y + shiftY])
+ ) {
+ for (let piece of finalPieces) {
+ moves.push(
+ this.getBasicMove([x, y], [x + shiftX, y + shiftY], {
+ c: color,
+ p: piece
+ })
+ );
+ }
+ }
+ }
+
+ return moves;
+ }
+
getPotentialGrasshopperMoves([x, y]) {
let moves = [];
// Look in every direction until an obstacle (to jump) is met
static GenRandInitFen() {
return ChessRules.GenRandInitFen()
+ .replace("w 0 1111 -", "w 0 1111")
.replace(
"/pppppppp/8/8/8/8/PPPPPPPP/",
"/gggggggg/pppppppp/8/8/PPPPPPPP/GGGGGGGG/"
getPotentialMovesFrom([x, y]) {
if (this.getPiece(x, y) == V.HIDDEN_QUEEN) {
- const pawnMoves = super.getPotentialPawnMoves([x, y]);
+ const pawnMoves = this.getPotentialPawnMoves([x, y]);
let queenMoves = super.getPotentialQueenMoves([x, y]);
// Remove from queen moves those corresponding to a pawn move:
queenMoves = queenMoves
return super.getPotentialMovesFrom([x, y]);
}
+ // TODO: find a more general way to describe pawn movements to avoid
+ // re-writing almost the same function for several variants.
+ getPotentialPawnMoves([x, y]) {
+ const color = this.turn;
+ const piece = this.getPiece(x, y);
+ let moves = [];
+ const [sizeX, sizeY] = [V.size.x, V.size.y];
+ const shiftX = color == "w" ? -1 : 1;
+ const startRank = color == "w" ? sizeX - 2 : 1;
+ const lastRank = color == "w" ? 0 : sizeX - 1;
+
+ const finalPieces =
+ x + shiftX == lastRank
+ ? piece == V.PAWN
+ ? [V.ROOK, V.KNIGHT, V.BISHOP, V.QUEEN]
+ : [V.QUEEN] //hidden queen revealed
+ : piece;
+ if (this.board[x + shiftX][y] == V.EMPTY) {
+ // One square forward
+ for (let p of finalPieces) {
+ moves.push(
+ this.getBasicMove([x, y], [x + shiftX, y], {
+ c: color,
+ p: p
+ })
+ );
+ }
+ if (
+ x == startRank &&
+ this.board[x + 2 * shiftX][y] == V.EMPTY
+ ) {
+ // Two squares jump
+ moves.push(this.getBasicMove([x, y], [x + 2 * shiftX, y]));
+ }
+ }
+ // Captures
+ for (let shiftY of [-1, 1]) {
+ if (
+ y + shiftY >= 0 &&
+ y + shiftY < sizeY &&
+ this.board[x + shiftX][y + shiftY] != V.EMPTY &&
+ this.canTake([x, y], [x + shiftX, y + shiftY])
+ ) {
+ for (let p of finalPieces) {
+ moves.push(
+ this.getBasicMove([x, y], [x + shiftX, y + shiftY], {
+ c: color,
+ p: p
+ })
+ );
+ }
+ }
+ }
+
+ if (V.HasEnpassant) {
+ // En passant
+ const Lep = this.epSquares.length;
+ const epSquare = this.epSquares[Lep - 1]; //always at least one element
+ if (
+ !!epSquare &&
+ epSquare.x == x + shiftX &&
+ Math.abs(epSquare.y - y) == 1
+ ) {
+ let enpassantMove = this.getBasicMove([x, y], [epSquare.x, epSquare.y]);
+ enpassantMove.vanish.push({
+ x: x,
+ y: epSquare.y,
+ p: "p",
+ c: this.getColor(x, epSquare.y)
+ });
+ moves.push(enpassantMove);
+ }
+ }
+
+ return moves;
+ }
+
getPossibleMovesFrom(sq) {
this.side = this.turn;
return this.filterValid(this.getPotentialMovesFrom(sq));
this.side = this.turn;
return super.getComputerMove();
}
+
+ getNotation(move) {
+ const notation = super.getNotation(move);
+ if (notation.charAt(0) == 'T')
+ // Do not reveal hidden queens
+ return notation.substr(1);
+ return notation;
+ }
};
('Hidden', 'Unidentified pieces'),
('Hiddenqueen', 'Queen disguised as a pawn'),
('Knightmate', 'Mate the knight'),
- ('Knightrelay', 'Move like a knight'),
+ ('Knightrelay', 'The knight transfers its powers'),
('Losers', 'Lose all pieces'),
('Magnetic', 'Laws of attraction'),
('Marseille', 'Move twice'),
('Rifle', 'Shoot pieces'),
- ('Royalrace', 'King crosses the board'),
+ ('Royalrace', 'Kings cross the board'),
('Recycle', 'Reuse pieces'),
('Shatranj', 'Ancient rules'),
('Suction', 'Attract opposite king'),
projects / vchess.git / commitdiff