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+ display="block"
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+ inkscape:connector-curvature="0" />
+ </g>
+</svg>
div.board11
width: 9.09%
- padding-bottom: 9.1%
+ padding-bottom: 9.09%
+
+div.board12
+ width: 8.33%
+ padding-bottom: 8.33%
img.piece
width: 100%
static get PawnSpecs() {
return {
directions: { 'w': -1, 'b': 1 },
+ initShift: { w: 1, b: 1 },
twoSquares: true,
+ threeSquares: false,
promotions: [V.ROOK, V.KNIGHT, V.BISHOP, V.QUEEN],
canCapture: true,
captureBackward: false,
return !!flags.match(/^[a-z]{4,4}$/);
}
+ // NOTE: not with regexp to adapt to different board sizes. (TODO?)
static IsGoodEnpassant(enpassant) {
if (enpassant != "-") {
const ep = V.SquareToCoords(enpassant);
const [sizeX, sizeY] = [V.size.x, V.size.y];
const pawnShiftX = V.PawnSpecs.directions[color];
const firstRank = (color == "w" ? sizeX - 1 : 0);
- const startRank = (color == "w" ? sizeX - 2 : 1);
// Pawn movements in shiftX direction:
const getPawnMoves = (shiftX) => {
// Next condition because pawns on 1st rank can generally jump
if (
V.PawnSpecs.twoSquares &&
- [startRank, firstRank].includes(x) &&
- this.board[x + 2 * shiftX][y] == V.EMPTY
+ (
+ (color == 'w' && x >= V.size.x - 1 - V.PawnSpecs.initShift['w'])
+ ||
+ (color == 'b' && x <= V.PawnSpecs.initShift['b'])
+ )
) {
- // Two squares jump
- moves.push(this.getBasicMove([x, y], [x + 2 * shiftX, y]));
+ if (this.board[x + 2 * shiftX][y] == V.EMPTY) {
+ // Two squares jump
+ moves.push(this.getBasicMove([x, y], [x + 2 * shiftX, y]));
+ if (
+ V.PawnSpecs.threeSquares &&
+ this.board[x + 3 * shiftX][y] == V.EMPTY
+ ) {
+ // Three squares jump
+ moves.push(this.getBasicMove([x, y], [x + 3 * shiftX, y]));
+ }
+ }
}
}
// Captures
if (piece == V.KING && move.appear.length > 0) {
this.kingPos[c][0] = move.appear[0].x;
this.kingPos[c][1] = move.appear[0].y;
- return;
}
if (V.HasCastle) this.updateCastleFlags(move, piece);
}
a(href="http://www.strategems.net/sections/fairy_defs.html") strategems.net
a(href="https://brainking.com/") brainking.com
a(href="https://www.facebook.com/groups/592562551198628") A Facebook group
+ a(href="http://www.zillions-of-games.com/") zillions-of-games.com
a(href="http://www.strategems.net/sections/fairy_defs.html") strategems.net
a(href="https://brainking.com/") brainking.com
a(href="https://www.facebook.com/groups/592562551198628") Un grupo Facebook
+ a(href="http://www.zillions-of-games.com/") zillions-of-games.com
a(href="http://www.strategems.net/sections/fairy_defs.html") strategems.net
a(href="https://brainking.com/") brainking.com
a(href="https://www.facebook.com/groups/592562551198628") Un groupe Facebook
+ a(href="http://www.zillions-of-games.com/") zillions-of-games.com
// Variants boxes:
"64 pieces on the board": "64 pieces on the board",
"A pawns cloud": "A pawns cloud",
+ "A wizard in the corner": "A wizard in the corner",
"Ancient rules": "Ancient rules",
"Attract opposite king": "Attract opposite king",
"Balanced sliders & leapers": "Balanced sliders & leapers",
"Each piece is unique": "Each piece is unique",
"Exotic captures": "Exotic captures",
"Explosive captures": "Explosive captures",
+ "Four new pieces": "Four new pieces",
"In the shadow": "In the shadow",
"Get strong at self-mate": "Get strong at self-mate",
"Give three checks": "Give three checks",
// Variants boxes:
"64 pieces on the board": "64 piezas en el tablero",
"A pawns cloud": "Une nube de peones",
+ "A wizard in the corner": "Un mago en la esquina",
"Ancient rules": "Viejas reglas",
"Attract opposite king": "Atraer al rey contrario",
"Balanced sliders & leapers": "Modos de desplazamiento equilibrados",
"Each piece is unique": "Cada pieza es única",
"Exotic captures": "Capturas exóticas",
"Explosive captures": "Capturas explosivas",
+ "Four new pieces": "Quatro nuevas piezas",
"In the shadow": "En la sombra",
"Get strong at self-mate": "Progreso en mates asistidos",
"Give three checks": "Dar tres jaques",
// Variants boxes:
"64 pieces on the board": "64 pièces sur l'échiquier",
"A pawns cloud": "Une nuée de pions",
+ "A wizard in the corner": "Un sorcier dans le coin",
"Ancient rules": "Règles anciennes",
"Attract opposite king": "Attirer le roi adverse",
"Balanced sliders & leapers": "Modes de déplacement équilibrés",
"Each piece is unique": "Chaque pièce est unique",
"Exotic captures": "Captures exotiques",
"Explosive captures": "Captures explosives",
+ "Four new pieces": "Quatre nouvelles pièces",
"In the shadow": "Dans l'ombre",
"Get strong at self-mate": "Progressez en mats aidés",
"Give three checks": "Donnez trois échecs",
--- /dev/null
+p.boxed.
+ 10x10 board with four extra corners and two new piece.
+ Orthodox rules with a few exceptions.
+
+figure.diagram-container
+ .diagram
+ | fen:wxxxxxxxxxxw/xcrnbqkbnrcx/xppppppppppx/x91x/x91x/x91x/x91x/x91x/x91x/xPPPPPPPPPPx/xCRNBQKBNRCx/WxxxxxxxxxxW:
+ figcaption Initial deterministic position
+
+p.
+ The board is unusually shaped: it's a 10x10 square with four extra corners
+ added. This open new tactical possibilites: a king can hide there for
+ example.
+
+p There are two new pieces in the corner and on the first rank:
+ul
+ li Champion (C) = dabbabah + alfil + wazir,
+ li Wizard (W) = camel + ferz.
+p.
+ Since the pieces mentioned to describe champion and wizard's movements might
+ be unknown, here is how they move:
+
+figure.diagram-container
+ .diagram.diag12
+ | fen:1xxxxxxxxxx1/x91x/x91x/x91x/x91x/x91x/x4C5x/x91x/x91x/x91x/x91x/1xxxxxxxxxx1 d8,f8,h8,f7,d6,e6,g6,h6,f5,d4,f4,h4:
+ .diagram.diag22
+ | fen:1xxxxxxxxxx1/x91x/x91x/x91x/x91x/x4W5x/x91x/x91x/x91x/x91x/x91x/1xxxxxxxxxx1 e10,g10,c8,i8,c6,i6,e4,g4,e8,g8,e6,g6:
+ figcaption Left: movements of the champion. Right: movements of the wizard.
+
+p.
+ The pawns behave as in orthodox chess, with a possible initial two or three
+ squares jump. They promote in any piece.
+ Castling is permitted: the king moves two squares to the right for a small
+ castle or to the left for a large castle.
+
+h3 Source
+
+p
+ | The
+ a(href="https://omegachess.com/") official website
+ | , which has a
+ a(href="http://www.omegachess.ru/omega/") playing area
+ | , although the Omega chess team purpose is seemingly to develop the game
+ | with real board and pieces - which they sell on the website. See also the
+ a(href="https://en.wikipedia.org/wiki/Omega_Chess") Wikipedia page
+ | .
+
+p Inventor: Daniel MacDonald (1995)
--- /dev/null
+p.boxed.
+ Tablero 10x10 con cuatro esquinas adicionales.
+ Reglas ortodoxas se aplican con algunas excepciones.
+
+figure.diagram-container
+ .diagram
+ | fen:wxxxxxxxxxxw/xcrnbqkbnrcx/xppppppppppx/x91x/x91x/x91x/x91x/x91x/x91x/xPPPPPPPPPPx/xCRNBQKBNRCx/WxxxxxxxxxxW:
+ figcaption Posición determinista inicial
+
+p.
+ El tablero de ajedrez tiene una forma inusual: es un cuadrado de 10x10 que
+ tenemos agregó cuatro esquinas. Esto abre nuevas posibilidades tácticas: un
+ rey puede esconderse allí, por ejemplo.
+
+p Dos piezas nuevas están en las esquinas y en la primera fila:
+ul
+ li Campeón (C) = dabbabah + alfil + wazir,
+ li brujo (W) = camello + ferz.
+p.
+ Desde las piezas mencionadas para describir los movimientos del campeón y
+ del hechicero pueden ser desconocido, así es como se mueven:
+
+figure.diagram-container
+ .diagram.diag12
+ | fen:1xxxxxxxxxx1/x91x/x91x/x91x/x91x/x91x/x4C5x/x91x/x91x/x91x/x91x/1xxxxxxxxxx1 d8,f8,h8,f7,d6,e6,g6,h6,f5,d4,f4,h4:
+ .diagram.diag22
+ | fen:1xxxxxxxxxx1/x91x/x91x/x91x/x91x/x4W5x/x91x/x91x/x91x/x91x/x91x/1xxxxxxxxxx1 e10,g10,c8,i8,c6,i6,e4,g4,e8,g8,e6,g6:
+ figcaption.
+ Izquierda: movimiento del campeón. Derecha: movimiento del hechicero.
+
+p.
+ Los peones se comportan como en el ajedrez ortodoxo, con un posible salto
+ iniciales dos o tres cajas. Se promocionan en cualquier habitación.
+ El enroque es posible: el rey mueve dos casillas a la derecha para
+ un enroque pequeño, o hacia la izquierda para un enroque grande.
+
+h3 Fuente
+
+p
+ | El
+ a(href="https://www.chessvariants.com/contests/10/tencubedchess.html")
+ | sitio web oficial
+ | , quien tiene un
+ a(href="http://www.omegachess.ru/omega/") área de juego
+ | , aunque el objetivo del equipo de ajedrez Omega parece ser desarrollar
+ | el juego con tableros de ajedrez y piezas reales, que venden en el sitio.
+ | Ver también la
+ a(href="https://en.wikipedia.org/wiki/Omega_Chess") página Wikipedia
+ | .
+
+p Inventor: Daniel MacDonald (1995)
--- /dev/null
+p.boxed.
+ Échiquier 10x10 avec quatre coins supplémentaires.
+ Les règles orthodoxes s'appliquent avec quelques exceptions.
+
+figure.diagram-container
+ .diagram
+ | fen:wxxxxxxxxxxw/xcrnbqkbnrcx/xppppppppppx/x91x/x91x/x91x/x91x/x91x/x91x/xPPPPPPPPPPx/xCRNBQKBNRCx/WxxxxxxxxxxW:
+ figcaption Position initiale déterministe
+
+p.
+ L'échiquier a une forme inhébituelle : c'est un carré 10x10 auquel on a
+ ajouté quatre coins. Cela ouvre de nouvelles possibilités tactiques : un roi
+ peut venir s'y cacher, par exemple.
+
+p Deux nouvelles pièces se trouvent dans les coins et sur la première rangée :
+ul
+ li Champion (C) = dabbabah + alfil + wazir,
+ li Sorcier (W) = chameau + ferz.
+p.
+ Puisque les pièces mentionnées pour décrire les déplacements du champion et
+ du sorcier peuvent être inconnues, voici comment elles se déplacent :
+
+figure.diagram-container
+ .diagram.diag12
+ | fen:1xxxxxxxxxx1/x91x/x91x/x91x/x91x/x91x/x4C5x/x91x/x91x/x91x/x91x/1xxxxxxxxxx1 d8,f8,h8,f7,d6,e6,g6,h6,f5,d4,f4,h4:
+ .diagram.diag22
+ | fen:1xxxxxxxxxx1/x91x/x91x/x91x/x91x/x4W5x/x91x/x91x/x91x/x91x/x91x/1xxxxxxxxxx1 e10,g10,c8,i8,c6,i6,e4,g4,e8,g8,e6,g6:
+ figcaption.
+ Gauche : déplacements du champion. Droite : déplacements du sorcier.
+
+p.
+ Les pions se comportent comme aux échecs orthodoxes, avec un éventuel saut
+ initial de deux ou trois cases. Ils se promeuvent en n'importe quelle pièce.
+ Le roque est possible : le roi se déplace de deux cases vers la droite pour
+ un petit roque, ou vers la gauche pour un grand roque.
+
+h3 Source
+
+p
+ | Le
+ a(href="https://www.chessvariants.com/contests/10/tencubedchess.html")
+ | site officiel
+ | , qui a une
+ a(href="http://www.omegachess.ru/omega/") zone de jeu
+ | , bien que l'objectif de l'équipe d'Omega chess semble être de développer
+ | le jeu avec des vrais échiquiers et pièces - qu'ils vendent sur le site.
+ | Voir aussi la
+ a(href="https://en.wikipedia.org/wiki/Omega_Chess") page Wikipedia
+ | .
+
+p Inventeur : Daniel MacDonald (1995)
--- /dev/null
+p.boxed.
+ 10x10 board with four new pieces. Orthodox rules with a few exceptions.
+
+figure.diagram-container
+ .diagram
+ | fen:2cwamwc2/1rnbqkbnr1/pppppppppp/91/91/91/91/PPPPPPPPPP/1RNBQKBNR1/2CWAMWC2:
+ figcaption Initial deterministic position
+
+p There are four new pieces on the first rank:
+ul
+ li Marshall (M) = rook + knight,
+ li Archbishop (A) = bishop + knight,
+ li Champion (C) = dabbabah + alfil + wazir,
+ li Wizard (W) = camel + ferz.
+p.
+ Since the pieces mentioned to describe champion and wizard's movements might
+ be unknown, here is how they move:
+
+figure.diagram-container
+ .diagram.diag12
+ | fen:91/91/91/91/91/4C5/91/91/91/91 c7,e7,g7,e6,c5,d5,f5,g5,e4,c3,e3,g3:
+ .diagram.diag22
+ | fen:91/91/91/91/4W5/91/91/91/91/91 d9,f9,b7,h7,b5,h5,d3,f3,d7,f7,d5,f5:
+ figcaption Left: movements of the champion. Right: movements of the wizard.
+
+p.
+ The pawns behave as in orthodox chess, with a possible initial two-squares
+ jump. They promote in queen, marshall or archbishop.
+ There is no castling.
+
+h3 Source
+
+p
+ a(href="https://www.chessvariants.com/contests/10/tencubedchess.html")
+ | Tencubed chess
+ | on chessvariants.com.
+
+p Inventor: David Paulowich (2005)
--- /dev/null
+p.boxed.
+ Tablero de 10x10 con cuatro piezas nuevas. Reglas ortodoxas se aplican con
+ algunas excepciones.
+
+figure.diagram-container
+ .diagram
+ | fen:2cwamwc2/1rnbqkbnr1/pppppppppp/91/91/91/91/PPPPPPPPPP/1RNBQKBNR1/2CWAMWC2:
+ figcaption Posición determinista inicial
+
+p Cuatro piezas nuevas están en la primera fila:
+ul
+ li Mariscal (M) = torre + jinete,
+ li Arzobispo (A) = loco + jinete,
+ li Campeón (C) = dabbabah + alfil + wazir,
+ li brujo (W) = camello + ferz.
+p.
+ Desde las piezas mencionadas para describir los movimientos del campeón y
+ del hechicero pueden ser desconocido, así es como se mueven:
+
+figure.diagram-container
+ .diagram.diag12
+ | fen:91/91/91/91/91/4C5/91/91/91/91 c7,e7,g7,e6,c5,d5,f5,g5,e4,c3,e3,g3:
+ .diagram.diag22
+ | fen:91/91/91/91/4W5/91/91/91/91/91 d9,f9,b7,h7,b5,h5,d3,f3,d7,f7,d5,f5:
+ figcaption.
+ Izquierda: movimiento del campeón. Derecha: movimiento del hechicero.
+
+p.
+ Los peones se comportan como en el ajedrez ortodoxo, con un posible salto
+ inicial de dos cajas. Se promocionan como dama, mariscal o arzobispo.
+ No hay enroque.
+
+h3 Fuente
+
+p
+ | La
+ a(href="https://www.chessvariants.com/contests/10/tencubedchess.html")
+ | variante Tencubed
+ | en chessvariants.com.
+
+p Inventor: David Paulowich (2005)
--- /dev/null
+p.boxed.
+ Échiquier 10x10 avec quatre nouvelles pièces. Les règles orthodoxes
+ s'appliquent avec quelques exceptions.
+
+figure.diagram-container
+ .diagram
+ | fen:2cwamwc2/1rnbqkbnr1/pppppppppp/91/91/91/91/PPPPPPPPPP/1RNBQKBNR1/2CWAMWC2:
+ figcaption Position initiale déterministe
+
+p Quatre nouvelles pièces se trouvent sur la première rangée :
+ul
+ li Maréchal (M) = tour + cavalier,
+ li Archevêque (A) = fou + cavalier,
+ li Champion (C) = dabbabah + alfil + wazir,
+ li Sorcier (W) = chameau + ferz.
+p.
+ Puisque les pièces mentionnées pour décrire les déplacements du champion et
+ du sorcier peuvent être inconnues, voici comment elles se déplacent :
+
+figure.diagram-container
+ .diagram.diag12
+ | fen:91/91/91/91/91/4C5/91/91/91/91 c7,e7,g7,e6,c5,d5,f5,g5,e4,c3,e3,g3:
+ .diagram.diag22
+ | fen:91/91/91/91/4W5/91/91/91/91/91 d9,f9,b7,h7,b5,h5,d3,f3,d7,f7,d5,f5:
+ figcaption.
+ Gauche : déplacements du champion. Droite : déplacements du sorcier.
+
+p.
+ Les pions se comportent comme aux échecs orthodoxes, avec un éventuel saut
+ initial de deux cases. Ils se promeuvent en dame, maréchal ou archevêque.
+ Il n'y a pas de roque.
+
+h3 Source
+
+p
+ | La
+ a(href="https://www.chessvariants.com/contests/10/tencubedchess.html")
+ | variante Tencubed
+ | sur chessvariants.com.
+
+p Inventeur : David Paulowich (2005)
this.kingPos[c][0] = move.appear[0].x;
this.kingPos[c][1] = move.appear[0].y;
this.castleFlags[c] = [V.size.y, V.size.y];
- return;
}
+ // Next call is still required because the king may eat an opponent's rook
+ // TODO: castleFlags will be turned off twice then.
super.updateCastleFlags(move, piece);
}
static IsGoodEnpassant(enpassant) {
if (enpassant != "-") {
const squares = enpassant.split(",");
+ if (squares.length > 2) return false;
for (let sq of squares) {
const ep = V.SquareToCoords(sq);
if (isNaN(ep.x) || !V.OnBoard(ep)) return false;
if (typeof moveOrSquare === "string") {
const square = moveOrSquare;
if (square == "-") return undefined;
- let res = [];
- square.split(",").forEach(sq => {
- res.push(V.SquareToCoords(sq));
- });
- return res;
+ // Expand init + dest squares into a full path:
+ const init = V.SquareToCoords(square.substr(0, 2));
+ let newPath = [init];
+ if (square.length == 2) return newPath;
+ const dest = V.SquareToCoords(square.substr(2));
+ const delta = ['x', 'y'].map(i => Math.abs(dest[i] - init[i]));
+ // Check if it's a knight(rider) movement:
+ let step = [0, 0];
+ if (delta[0] > 0 && delta[1] > 0 && delta[0] != delta[1]) {
+ // Knightrider
+ const minShift = Math.min(delta[0], delta[1]);
+ step[0] = (dest.x - init.x) / minShift;
+ step[1] = (dest.y - init.y) / minShift;
+ } else {
+ // "Sliders"
+ step = ['x', 'y'].map((i, idx) => {
+ return (dest[i] - init[i]) / delta[idx] || 0
+ });
+ }
+ let x = init.x + step[0],
+ y = init.y + step[1];
+ while (x != dest.x || y != dest.y) {
+ newPath.push({ x: x, y: y });
+ x += step[0];
+ y += step[1];
+ }
+ newPath.push(dest);
+ return newPath;
}
// Argument is a move: all intermediate squares are en-passant candidates,
// except if the moving piece is a king.
x != move.end.x || y != move.end.y;
x += step[0], y += step[1]
) {
- res.push({x:x, y:y});
+ res.push({ x: x, y: y });
}
// Add final square to know which piece is taken en passant:
res.push(move.end);
getEnpassantFen() {
const L = this.epSquares.length;
if (!this.epSquares[L - 1]) return "-"; //no en-passant
- let res = "";
- this.epSquares[L - 1].forEach(sq => {
- res += V.CoordsToSquare(sq) + ",";
- });
- return res.slice(0, -1); //remove last comma
+ const epsq = this.epSquares[L - 1];
+ if (epsq.length <= 2) return epsq.map(V.CoordsToSquare).join("");
+ // Condensate path: just need initial and final squares:
+ return V.CoordsToSquare(epsq[0]) + V.CoordsToSquare(epsq[epsq.length - 1]);
}
getPotentialMovesFrom([x, y]) {
if (!ChessRules.IsGoodFen(fen)) return false;
const fenParsed = V.ParseFen(fen);
// 5) Check captures
- if (!fenParsed.captured || !fenParsed.captured.match(/^[0-9]{14,14}$/))
+ if (!fenParsed.captured || !fenParsed.captured.match(/^[0-9]{12,12}$/))
return false;
return true;
}
static IsGoodEnpassant(enpassant) {
- if (enpassant != "-") {
- const squares = enpassant.split(",");
- if (squares.length > 2) return false;
- for (let sq of squares) {
- const ep = V.SquareToCoords(sq);
- if (isNaN(ep.x) || !V.OnBoard(ep)) return false;
- }
- }
+ if (enpassant != "-") return !!enpassant.match(/^([a-j][0-9]{1,2},?)+$/);
return true;
}
}
];
if (sx + 2 * step != ex) {
- //3-squares move
+ // 3-squares jump
res.push({
x: sx + 2 * step,
y: sy
// En passant
const Lep = this.epSquares.length;
const epSquare = this.epSquares[Lep - 1];
- if (epSquare) {
+ if (!!epSquare) {
for (let epsq of epSquare) {
// TODO: some redundant checks
if (epsq.x == x + shiftX && Math.abs(epsq.y - y) == 1) {
// Definition of 'c' in base class doesn't work:
const c = move.vanish[0].c;
const piece = move.vanish[0].p;
- if (piece == V.KING && move.appear.length > 0) {
+ if (piece == V.KING) {
this.kingPos[c][0] = move.appear[0].x;
this.kingPos[c][1] = move.appear[0].y;
- return;
}
this.updateCastleFlags(move, piece);
}
--- /dev/null
+import { ChessRules, Move, PiPo } from "@/base_rules";
+import { ArrayFun } from "@/utils/array";
+import { randInt } from "@/utils/alea";
+
+export class OmegaRules extends ChessRules {
+ static get PawnSpecs() {
+ return Object.assign(
+ {},
+ ChessRules.PawnSpecs,
+ {
+ initShift: { w: 2, b: 2 },
+ threeSquares: true,
+ promotions:
+ ChessRules.PawnSpecs.promotions.concat([V.CHAMPION, V.WIZARD])
+ }
+ );
+ }
+
+ // For space between corners:
+ static get NOTHING() {
+ return "xx";
+ }
+
+ static board2fen(b) {
+ if (b[0] == 'x') return 'x';
+ return ChessRules.board2fen(b);
+ }
+
+ static fen2board(f) {
+ if (f == 'x') return V.NOTHING;
+ return ChessRules.fen2board(f);
+ }
+
+ getPpath(b) {
+ if (b[0] == 'x') return "Omega/nothing";
+ return ([V.CHAMPION, V.WIZARD].includes(b[1]) ? "Omega/" : "") + b;
+ }
+
+ // NOTE: keep this extensive check because the board has holes
+ static IsGoodEnpassant(enpassant) {
+ if (enpassant != "-") {
+ const squares = enpassant.split(",");
+ if (squares.length > 2) return false;
+ for (let sq of squares) {
+ const ep = V.SquareToCoords(sq);
+ if (isNaN(ep.x) || !V.OnBoard(ep)) return false;
+ }
+ }
+ return true;
+ }
+
+ static get size() {
+ return { x: 12, y: 12 };
+ }
+
+ static OnBoard(x, y) {
+ return (
+ (x >= 1 && x <= 10 && y >= 1 && y <= 10) ||
+ (x == 11 && [0, 11].includes(y)) ||
+ (x == 0 && [0, 11].includes(y))
+ );
+ }
+
+ // Dabbabah + alfil + wazir
+ static get CHAMPION() {
+ return "c";
+ }
+
+ // Camel + ferz
+ static get WIZARD() {
+ return "w";
+ }
+
+ static get PIECES() {
+ return ChessRules.PIECES.concat([V.CHAMPION, V.WIZARD]);
+ }
+
+ static get steps() {
+ return Object.assign(
+ {},
+ ChessRules.steps,
+ {
+ w: [
+ [-3, -1],
+ [-3, 1],
+ [-1, -3],
+ [-1, 3],
+ [1, -3],
+ [1, 3],
+ [3, -1],
+ [3, 1],
+ [-1, -1],
+ [-1, 1],
+ [1, -1],
+ [1, 1]
+ ],
+ c: [
+ [1, 0],
+ [-1, 0],
+ [0, 1],
+ [0, -1],
+ [2, 2],
+ [2, -2],
+ [-2, 2],
+ [-2, -2],
+ [-2, 0],
+ [0, -2],
+ [2, 0],
+ [0, 2]
+ ]
+ }
+ );
+ }
+
+ static GenRandInitFen(randomness) {
+ if (randomness == 0) {
+ return (
+ "wxxxxxxxxxxw/xcrnbqkbnrcx/xppppppppppx/x91x/x91x/x91x/" +
+ "x91x/x91x/x91x/xPPPPPPPPPPx/xCRNBQKBNRCx/WxxxxxxxxxxW " +
+ "w 0 cjcj -"
+ );
+ }
+
+ let pieces = { w: new Array(10), b: new Array(10) };
+ let flags = "";
+ // Shuffle pieces on first (and last rank if randomness == 2)
+ for (let c of ["w", "b"]) {
+ if (c == 'b' && randomness == 1) {
+ pieces['b'] = pieces['w'];
+ flags += flags;
+ break;
+ }
+
+ let positions = ArrayFun.range(10);
+
+ // Get random squares for bishops
+ let randIndex = 2 * randInt(5);
+ const bishop1Pos = positions[randIndex];
+ // The second bishop must be on a square of different color
+ let randIndex_tmp = 2 * randInt(5) + 1;
+ const bishop2Pos = positions[randIndex_tmp];
+ positions.splice(Math.max(randIndex, randIndex_tmp), 1);
+ positions.splice(Math.min(randIndex, randIndex_tmp), 1);
+
+ // Get random squares for champions
+ randIndex = 2 * randInt(4);
+ let bishopSameColorPos = (bishop1Pos % 2 == 0 ? bishop1Pos : bishop2Pos);
+ if (randIndex >= bishopSameColorPos) randIndex += 2;
+ const champion1Pos = positions[randIndex];
+ // The second champion must be on a square of different color
+ randIndex_tmp = 2 * randInt(4) + 1;
+ bishopSameColorPos = (bishop1Pos % 2 == 0 ? bishop1Pos : bishop2Pos);
+ if (randIndex_tmp >= bishopSameColorPos) randIndex_tmp += 2;
+ const champion2Pos = positions[randIndex_tmp];
+ positions.splice(Math.max(randIndex, randIndex_tmp), 1);
+ positions.splice(Math.min(randIndex, randIndex_tmp), 1);
+
+ // Get random squares for other pieces
+ randIndex = randInt(6);
+ const knight1Pos = positions[randIndex];
+ positions.splice(randIndex, 1);
+ randIndex = randInt(5);
+ const knight2Pos = positions[randIndex];
+ positions.splice(randIndex, 1);
+
+ randIndex = randInt(4);
+ const queenPos = positions[randIndex];
+ positions.splice(randIndex, 1);
+
+ // Rooks and king positions are now fixed
+ const rook1Pos = positions[0];
+ const kingPos = positions[1];
+ const rook2Pos = positions[2];
+
+ pieces[c][champion1Pos] = "c";
+ pieces[c][rook1Pos] = "r";
+ pieces[c][knight1Pos] = "n";
+ pieces[c][bishop1Pos] = "b";
+ pieces[c][queenPos] = "q";
+ pieces[c][kingPos] = "k";
+ pieces[c][bishop2Pos] = "b";
+ pieces[c][knight2Pos] = "n";
+ pieces[c][rook2Pos] = "r";
+ pieces[c][champion2Pos] = "c";
+ flags += V.CoordToColumn(rook1Pos) + V.CoordToColumn(rook2Pos);
+ }
+ // Add turn + flags + enpassant
+ return (
+ "wxxxxxxxxxxw/" +
+ "x" + pieces["b"].join("") +
+ "x/xppppppppppx/x91x/x91x/x91x/x91x/x91x/x91x/xPPPPPPPPPPx/x" +
+ pieces["w"].join("").toUpperCase() + "x" +
+ "/WxxxxxxxxxxW " +
+ "w 0 " + flags + " -"
+ );
+ }
+
+ // There may be 2 enPassant squares (if pawn jump 3 squares)
+ getEnpassantFen() {
+ const L = this.epSquares.length;
+ if (!this.epSquares[L - 1]) return "-"; //no en-passant
+ let res = "";
+ this.epSquares[L - 1].forEach(sq => {
+ res += V.CoordsToSquare(sq) + ",";
+ });
+ return res.slice(0, -1); //remove last comma
+ }
+
+ // En-passant after 2-sq or 3-sq jumps
+ getEpSquare(moveOrSquare) {
+ if (!moveOrSquare) return undefined;
+ if (typeof moveOrSquare === "string") {
+ const square = moveOrSquare;
+ if (square == "-") return undefined;
+ let res = [];
+ square.split(",").forEach(sq => {
+ res.push(V.SquareToCoords(sq));
+ });
+ return res;
+ }
+ // Argument is a move:
+ const move = moveOrSquare;
+ const [sx, sy, ex] = [move.start.x, move.start.y, move.end.x];
+ if (this.getPiece(sx, sy) == V.PAWN && Math.abs(sx - ex) >= 2) {
+ const step = (ex - sx) / Math.abs(ex - sx);
+ let res = [
+ {
+ x: sx + step,
+ y: sy
+ }
+ ];
+ if (sx + 2 * step != ex) {
+ // 3-squares jump
+ res.push({
+ x: sx + 2 * step,
+ y: sy
+ });
+ }
+ return res;
+ }
+ return undefined; //default
+ }
+
+ getPotentialMovesFrom([x, y]) {
+ switch (this.getPiece(x, y)) {
+ case V.CHAMPION:
+ return this.getPotentialChampionMoves([x, y]);
+ case V.WIZARD:
+ return this.getPotentialWizardMoves([x, y]);
+ default:
+ return super.getPotentialMovesFrom([x, y]);
+ }
+ }
+
+ getEnpassanCaptures([x, y], shiftX) {
+ const Lep = this.epSquares.length;
+ const epSquare = this.epSquares[Lep - 1];
+ let moves = [];
+ if (!!epSquare) {
+ for (let epsq of epSquare) {
+ // TODO: some redundant checks
+ if (epsq.x == x + shiftX && Math.abs(epsq.y - y) == 1) {
+ let enpassantMove = this.getBasicMove([x, y], [epsq.x, epsq.y]);
+ // WARNING: the captured pawn may be diagonally behind us,
+ // if it's a 3-squares jump and we take on 1st passing square
+ const px = this.board[x][epsq.y] != V.EMPTY ? x : x - shiftX;
+ enpassantMove.vanish.push({
+ x: px,
+ y: epsq.y,
+ p: "p",
+ c: this.getColor(px, epsq.y)
+ });
+ moves.push(enpassantMove);
+ }
+ }
+ }
+ return moves;
+ }
+
+ getPotentialChampionMoves(sq) {
+ return this.getSlideNJumpMoves(sq, V.steps[V.CHAMPION], "oneStep");
+ }
+
+ getPotentialWizardMoves(sq) {
+ return this.getSlideNJumpMoves(sq, V.steps[V.WIZARD], "oneStep");
+ }
+
+ getCastleMoves([x, y], castleInCheck) {
+ const c = this.getColor(x, y);
+ if (x != (c == "w" ? V.size.x - 2 : 1) || y != this.INIT_COL_KING[c])
+ return []; //x isn't first rank, or king has moved (shortcut)
+
+ // Castling ?
+ const oppCol = V.GetOppCol(c);
+ let moves = [];
+ let i = 0;
+ // King, then rook:
+ const finalSquares = [
+ [4, 5],
+ [8, 7]
+ ];
+ castlingCheck: for (
+ let castleSide = 0;
+ castleSide < 2;
+ castleSide++ //large, then small
+ ) {
+ if (this.castleFlags[c][castleSide] >= V.size.y) continue;
+ // If this code is reached, rook and king are on initial position
+
+ // NOTE: in some variants this is not a rook
+ const rookPos = this.castleFlags[c][castleSide];
+ if (this.board[x][rookPos] == V.EMPTY || this.getColor(x, rookPos) != c)
+ // Rook is not here, or changed color (see Benedict)
+ continue;
+
+ // Nothing on the path of the king ? (and no checks)
+ const castlingPiece = this.getPiece(x, rookPos);
+ const finDist = finalSquares[castleSide][0] - y;
+ let step = finDist / Math.max(1, Math.abs(finDist));
+ i = y;
+ do {
+ if (
+ (!castleInCheck && this.isAttacked([x, i], oppCol)) ||
+ (this.board[x][i] != V.EMPTY &&
+ // NOTE: next check is enough, because of chessboard constraints
+ (this.getColor(x, i) != c ||
+ ![V.KING, castlingPiece].includes(this.getPiece(x, i))))
+ ) {
+ continue castlingCheck;
+ }
+ i += step;
+ } while (i != finalSquares[castleSide][0]);
+
+ // Nothing on the path to the rook?
+ step = castleSide == 0 ? -1 : 1;
+ for (i = y + step; i != rookPos; i += step) {
+ if (this.board[x][i] != V.EMPTY) continue castlingCheck;
+ }
+
+ // Nothing on final squares, except maybe king and castling rook?
+ for (i = 0; i < 2; i++) {
+ if (
+ finalSquares[castleSide][i] != rookPos &&
+ this.board[x][finalSquares[castleSide][i]] != V.EMPTY &&
+ (
+ this.getPiece(x, finalSquares[castleSide][i]) != V.KING ||
+ this.getColor(x, finalSquares[castleSide][i]) != c
+ )
+ ) {
+ continue castlingCheck;
+ }
+ }
+
+ // If this code is reached, castle is valid
+ moves.push(
+ new Move({
+ appear: [
+ new PiPo({
+ x: x,
+ y: finalSquares[castleSide][0],
+ p: V.KING,
+ c: c
+ }),
+ new PiPo({
+ x: x,
+ y: finalSquares[castleSide][1],
+ p: castlingPiece,
+ c: c
+ })
+ ],
+ vanish: [
+ new PiPo({ x: x, y: y, p: V.KING, c: c }),
+ new PiPo({ x: x, y: rookPos, p: castlingPiece, c: c })
+ ],
+ end:
+ Math.abs(y - rookPos) <= 2
+ ? { x: x, y: rookPos }
+ : { x: x, y: y + 2 * (castleSide == 0 ? -1 : 1) }
+ })
+ );
+ }
+
+ return moves;
+ }
+
+ isAttacked(sq, color) {
+ return (
+ super.isAttacked(sq, color) ||
+ this.isAttackedByChampion(sq, color) ||
+ this.isAttackedByWizard(sq, color)
+ );
+ }
+
+ isAttackedByWizard(sq, color) {
+ return (
+ this.isAttackedBySlideNJump(
+ sq, color, V.WIZARD, V.steps[V.WIZARD], "oneStep")
+ );
+ }
+
+ isAttackedByChampion(sq, color) {
+ return (
+ this.isAttackedBySlideNJump(
+ sq, color, V.CHAMPION, V.steps[V.CHAMPION], "oneStep")
+ );
+ }
+
+ updateCastleFlags(move, piece) {
+ const c = V.GetOppCol(this.turn);
+ const firstRank = (c == "w" ? V.size.x - 2 : 1);
+ // Update castling flags if rooks are moved
+ const oppCol = this.turn;
+ const oppFirstRank = V.size.x - 1 - firstRank;
+ if (piece == V.KING)
+ this.castleFlags[c] = [V.size.y, V.size.y];
+ else if (
+ move.start.x == firstRank && //our rook moves?
+ this.castleFlags[c].includes(move.start.y)
+ ) {
+ const flagIdx = (move.start.y == this.castleFlags[c][0] ? 0 : 1);
+ this.castleFlags[c][flagIdx] = V.size.y;
+ }
+ // NOTE: not "else if" because a rook could take an opposing rook
+ if (
+ move.end.x == oppFirstRank && //we took opponent rook?
+ this.castleFlags[oppCol].includes(move.end.y)
+ ) {
+ const flagIdx = (move.end.y == this.castleFlags[oppCol][0] ? 0 : 1);
+ this.castleFlags[oppCol][flagIdx] = V.size.y;
+ }
+ }
+
+ static get SEARCH_DEPTH() {
+ return 2;
+ }
+
+ // Values taken from https://omegachess.com/strategy.htm
+ static get VALUES() {
+ return {
+ p: 1,
+ n: 2,
+ b: 4,
+ r: 6,
+ q: 12,
+ w: 4,
+ c: 4,
+ k: 1000
+ };
+ }
+};
([V.HAWK, V.ELEPHANT, V.NOTHING].includes(move.appear[0].p) ? 1 : 0);
this.kingPos[color][0] = move.appear[shift].x;
this.kingPos[color][1] = move.appear[shift].y;
- return;
}
this.updateCastleFlags(move, piece);
--- /dev/null
+import { ChessRules } from "@/base_rules";
+import { ArrayFun } from "@/utils/array";
+import { shuffle } from "@/utils/alea";
+
+export class TencubedRules extends ChessRules {
+ static get PawnSpecs() {
+ return Object.assign(
+ {},
+ ChessRules.PawnSpecs,
+ {
+ initShift: { w: 2, b: 2 },
+ promotions: [V.QUEEN, V.MARSHALL, V.ARCHBISHOP]
+ }
+ );
+ }
+
+ static get HasFlags() {
+ return false;
+ }
+
+ getPpath(b) {
+ return (
+ [V.MARSHALL, V.ARCHBISHOP, V.CHAMPION, V.WIZARD].includes(b[1])
+ ? "Tencubed/"
+ : ""
+ ) + b;
+ }
+
+ static get size() {
+ return { x: 10, y: 10 };
+ }
+
+ // Rook + knight:
+ static get MARSHALL() {
+ return "m";
+ }
+
+ // Bishop + knight
+ static get ARCHBISHOP() {
+ return "a";
+ }
+
+ // Dabbabah + alfil + wazir
+ static get CHAMPION() {
+ return "c";
+ }
+
+ // Camel + ferz
+ static get WIZARD() {
+ return "w";
+ }
+
+ static get PIECES() {
+ return (
+ ChessRules.PIECES
+ .concat([V.MARSHALL, V.ARCHBISHOP, V.CHAMPION, V.WIZARD])
+ );
+ }
+
+ static get steps() {
+ return Object.assign(
+ {},
+ ChessRules.steps,
+ {
+ w: [
+ [-3, -1],
+ [-3, 1],
+ [-1, -3],
+ [-1, 3],
+ [1, -3],
+ [1, 3],
+ [3, -1],
+ [3, 1],
+ [-1, -1],
+ [-1, 1],
+ [1, -1],
+ [1, 1]
+ ],
+ c: [
+ [1, 0],
+ [-1, 0],
+ [0, 1],
+ [0, -1],
+ [2, 2],
+ [2, -2],
+ [-2, 2],
+ [-2, -2],
+ [-2, 0],
+ [0, -2],
+ [2, 0],
+ [0, 2]
+ ]
+ }
+ );
+ }
+
+ static GenRandInitFen(randomness) {
+ if (randomness == 0) {
+ return (
+ "2cwamwc2/1rnbqkbnr1/pppppppppp/91/91/" +
+ "91/91/PPPPPPPPPP/1RNBQKBNR1/2CWAMWC2/ " +
+ "w 0 bibi -"
+ );
+ }
+
+ const baseFen = V.ParseFen(ChessRules.GenRandInitFen(randomness));
+ const positionParts = baseFen.position.split("/");
+ const bFen = (
+ "1" + positionParts[0] +
+ "1/pppppppppp/91/91/91/91/PPPPPPPPPP/1" +
+ positionParts[7] + "1"
+ );
+ // Now just obtain randomized new pieces placements:
+ let pieces = { w: new Array(6), b: new Array(6) };
+ for (let c of ["w", "b"]) {
+ if (c == 'b' && randomness == 1) {
+ pieces['b'] = pieces['w'];
+ break;
+ }
+
+ let positions = shuffle(ArrayFun.range(6));
+ const composition = ['w', 'w', 'c', 'c', 'a', 'm'];
+ let rem2 = positions[0] % 2;
+ if (rem2 == positions[1] % 2) {
+ // Fix wizards (on different colors)
+ for (let i=4; i<6; i++) {
+ if (positions[i] % 2 != rem2)
+ [positions[1], positions[i]] = [positions[i], positions[1]];
+ }
+ }
+ rem2 = positions[2] % 2;
+ if (rem2 == positions[3] % 2) {
+ // Fix champions too: [NOTE: positions[4] & [5] should do]
+ for (let i=4; i<6; i++) {
+ if (positions[i] % 2 != rem2)
+ [positions[3], positions[i]] = [positions[i], positions[3]];
+ }
+ }
+ for (let i = 0; i < 9; i++) pieces[c][positions[i]] = composition[i];
+ }
+ return (
+ "2" + pieces["b"].join("") + "2/" +
+ bFen +
+ "/2" + pieces["w"].join("").toUpperCase() + "2" +
+ " w 0 -"
+ );
+ }
+
+ getPotentialMovesFrom([x, y]) {
+ switch (this.getPiece(x, y)) {
+ case V.MARSHALL:
+ return this.getPotentialMarshallMoves([x, y]);
+ case V.ARCHBISHOP:
+ return this.getPotentialArchbishopMoves([x, y]);
+ case V.CHAMPION:
+ return this.getPotentialChampionMoves([x, y]);
+ case V.WIZARD:
+ return this.getPotentialWizardMoves([x, y]);
+ default:
+ return super.getPotentialMovesFrom([x, y]);
+ }
+ }
+
+ getPotentialMarshallMoves(sq) {
+ return this.getSlideNJumpMoves(sq, V.steps[V.ROOK]).concat(
+ this.getSlideNJumpMoves(sq, V.steps[V.KNIGHT], "oneStep")
+ );
+ }
+
+ getPotentialArchbishopMoves(sq) {
+ return this.getSlideNJumpMoves(sq, V.steps[V.BISHOP]).concat(
+ this.getSlideNJumpMoves(sq, V.steps[V.KNIGHT], "oneStep")
+ );
+ }
+
+ getPotentialChampionMoves(sq) {
+ return this.getSlideNJumpMoves(sq, V.steps[V.CHAMPION], "oneStep");
+ }
+
+ getPotentialWizardMoves(sq) {
+ return this.getSlideNJumpMoves(sq, V.steps[V.WIZARD], "oneStep");
+ }
+
+ isAttacked(sq, color) {
+ return (
+ super.isAttacked(sq, color) ||
+ this.isAttackedByMarshall(sq, color) ||
+ this.isAttackedByArchbishop(sq, color) ||
+ this.isAttackedByChampion(sq, color) ||
+ this.isAttackedByWizard(sq, color)
+ );
+ }
+
+ isAttackedByMarshall(sq, color) {
+ return (
+ this.isAttackedBySlideNJump(sq, color, V.MARSHALL, V.steps[V.ROOK]) ||
+ this.isAttackedBySlideNJump(
+ sq,
+ color,
+ V.MARSHALL,
+ V.steps[V.KNIGHT],
+ "oneStep"
+ )
+ );
+ }
+
+ isAttackedByArchbishop(sq, color) {
+ return (
+ this.isAttackedBySlideNJump(sq, color, V.CARDINAL, V.steps[V.BISHOP]) ||
+ this.isAttackedBySlideNJump(
+ sq,
+ color,
+ V.CARDINAL,
+ V.steps[V.KNIGHT],
+ "oneStep"
+ )
+ );
+ }
+
+ isAttackedByWizard(sq, color) {
+ return (
+ this.isAttackedBySlideNJump(
+ sq, color, V.WIZARD, V.steps[V.WIZARD], "oneStep")
+ );
+ }
+
+ isAttackedByChampion(sq, color) {
+ return (
+ this.isAttackedBySlideNJump(
+ sq, color, V.CHAMPION, V.steps[V.CHAMPION], "oneStep")
+ );
+ }
+
+ static get SEARCH_DEPTH() {
+ return 2;
+ }
+
+ static get VALUES() {
+ return Object.assign(
+ {},
+ ChessRules.VALUES,
+ { c: 4, w: 3, a: 6, m: 8 }
+ );
+ }
+};
}
static IsGoodEnpassant(enpassant) {
- if (enpassant != "-") {
- const squares = enpassant.split(",");
- if (squares.length > 2) return false;
- for (let sq of squares) {
- const ep = V.SquareToCoords(sq);
- if (isNaN(ep.x) || !V.OnBoard(ep)) return false;
- }
- }
+ if (enpassant != "-") return !!enpassant.match(/^([a-j][0-9]{1,2},?)+$/);
return true;
}
// En passant
const Lep = this.epSquares.length;
const epSquare = this.epSquares[Lep - 1];
- if (epSquare) {
+ if (!!epSquare) {
for (let epsq of epSquare) {
// TODO: some redundant checks
if (epsq.x == x + shiftX && Math.abs(epsq.y - y) == 1) {
('Magnetic', 'Laws of attraction'),
('Marseille', 'Double moves'),
('Monster', 'White move twice'),
+ ('Omega', 'A wizard in the corner'),
('Orda', 'Mongolian Horde'),
('Parachute', 'Landing on the board'),
('Perfect', 'Powerful pieces'),
('Shatranj', 'Ancient rules'),
('Suicide', 'Lose all pieces'),
('Suction', 'Attract opposite king'),
+ ('Tencubed', 'Four new pieces'),
('Threechecks', 'Give three checks'),
('Twokings', 'Two kings'),
('Upsidedown', 'Board upside down'),
projects / vchess.git / commitdiff
