From: Benjamin Auder Date: Fri, 20 Mar 2020 21:08:16 +0000 (+0100) Subject: Add Twokings variant X-Git-Url: https://git.auder.net/variants/current/doc/css/img/DESCRIPTION?a=commitdiff_plain;h=14c35dc66973e66f9d9a680abb0a35db93ee2bcb;p=vchess.git Add Twokings variant --- diff --git a/client/src/translations/en.js b/client/src/translations/en.js index ded2b8a9..af674cc4 100644 --- a/client/src/translations/en.js +++ b/client/src/translations/en.js @@ -197,6 +197,7 @@ export const translations = { "Squares disappear": "Squares disappear", "Standard rules": "Standard rules", "Transform an essay": "Transform an essay", + "Two kings": "Two kings", "Two royal pieces": "Two royal pieces", "Unidentified pieces": "Unidentified pieces" }; diff --git a/client/src/translations/es.js b/client/src/translations/es.js index c065cf0e..183bd6f3 100644 --- a/client/src/translations/es.js +++ b/client/src/translations/es.js @@ -197,6 +197,7 @@ export const translations = { "Squares disappear": "Las casillas desaparecen", "Standard rules": "Reglas estandar", "Transform an essay": "Transformar un ensayo", + "Two kings": "Dos reyes", "Two royal pieces": "Dos piezas reales", "Unidentified pieces": "Piezas no identificadas" }; diff --git a/client/src/translations/fr.js b/client/src/translations/fr.js index 120571b7..b317bb41 100644 --- a/client/src/translations/fr.js +++ b/client/src/translations/fr.js @@ -197,6 +197,7 @@ export const translations = { "Squares disappear": "Les cases disparaissent", "Standard rules": "Règles usuelles", "Transform an essay": "Transformer un essai", + "Two kings": "Deux rois", "Two royal pieces": "Deux pièces royales", "Unidentified pieces": "Pièces non identifiées" }; diff --git a/client/src/translations/rules/Coregal/es.pug b/client/src/translations/rules/Coregal/es.pug index 489775b9..f7484e8a 100644 --- a/client/src/translations/rules/Coregal/es.pug +++ b/client/src/translations/rules/Coregal/es.pug @@ -15,7 +15,7 @@ p. jaque las dos piezas reales al mismo tiempo, como en el siguiente diagrama. figure.diagram-container - .diagrama + .diagram | fen:4Q3/4K3/8/8/3N4/5k2/2q5/8: figcaption Las blancas ganan porque el rey y la dama negra están en jaque. @@ -32,7 +32,7 @@ p. un gran enroque negro con la dama: figure.diagram-container - .diagrama + .diagram | fen:r4rq1/ppppppkp/6p1/8/8/8/PPPPPPPP/1QR2RK1: figcaption Después de dos pequeñas rocas blancas y un gran enroque negro. diff --git a/client/src/translations/rules/Twokings/en.pug b/client/src/translations/rules/Twokings/en.pug new file mode 100644 index 00000000..03037777 --- /dev/null +++ b/client/src/translations/rules/Twokings/en.pug @@ -0,0 +1,32 @@ +p.boxed + | Each side has two kings. Mate any of them. + +p. + Both kings can be checked and mated. This adds a new option to win a game, + by attaking both kings at the same time, as illustrated below. + +figure.diagram-container + .diagram + | fen:6KK/8/2Q5/8/8/5k2/2k5/8: + figcaption Both black kings are in check: white wins. + +h3 Special moves + +p. + A pawn can promote into a king, which can be mated too. + Probably not useful in a real game, but interesting for problems. + +p. + You can castle with any king and rook, under the same conditions + as orthodox castling. However, castling long is possible only with one king. + +p. + Note: to castle in a game you need to select + the king or queen first, and then move it to a rook. + +h3 Source + +p + a(href="https://greenchess.net/rules.php?v=dual") Dual Chess + |  on greenchess.net. Probably invented by the webmaster Uray M. János, + | inspired by Coregal chess from chessvariants.com. diff --git a/client/src/translations/rules/Twokings/es.pug b/client/src/translations/rules/Twokings/es.pug new file mode 100644 index 00000000..fe3f0712 --- /dev/null +++ b/client/src/translations/rules/Twokings/es.pug @@ -0,0 +1,34 @@ +p.boxed + | Cada campo tiene dos reyes. Mate a cualquiera. + +p. + Los dos reyes pueden estar en jaque (mate). Esto agrega un nuevo + opción de ganar una partida, como se muestra a continuación. + +figure.diagram-container + .diagram + | fen:6KK/8/2Q5/8/8/5k2/2k5/8: + figcaption Los dos reyes negros están en jaque: las blancas ganan. + +h3 Movimientos especiales + +p. + Un peón puede ser promovido a rey, que también puede estar en jaque. + Sin duda no es muy útil en partida, pero sí interesante por los problemas. + +p. + Puedes rocar con cualquier rey y torre, bajo las mismas + condiciones que al ajedrez ortodoxo. Sin embargo, + el enroque grande no es posible que con uno de los dos reyes. + +p. + Nota: para enrocar en una partida debes seleccionar el rey o la dama + primero, luego mueva la pieza a una torre. + +h3 Fuente + +p + | La + a(href="https://greenchess.net/rules.php?v=dual") dariante Dual + |  en greenchess.net. Probablemente inventado por el webmaster + | Uray M. János, inspirado por la variante Coregal en chessvariants.com. diff --git a/client/src/translations/rules/Twokings/fr.pug b/client/src/translations/rules/Twokings/fr.pug new file mode 100644 index 00000000..be6c14dc --- /dev/null +++ b/client/src/translations/rules/Twokings/fr.pug @@ -0,0 +1,34 @@ +p.boxed + | Chaque camp a deux rois. Matez n'importe lequel. + +p. + Les deux rois peuvent être mis en échec et matés. Cela ajoute une nouvelle + option pour gagner une partie, comme illustré ci-dessous. + +figure.diagram-container + .diagram + | fen:6KK/8/2Q5/8/8/5k2/2k5/8: + figcaption Les deux rois noirs sont en échec : les blancs gagnent. + +h3 Coups spéciaux + +p. + Un pion peut être promu en roi, qui pourra être maté également. + Sans doute peu utile en partie, mais intéressant pour les problèmes. + +p. + Vous pouvez roquer avec n'importe quel roi et tour, sous les mêmes + conditions qu'aux échecs orthodoxes. Cependant, le grand roque n'est possible + qu'avec un des deux rois. + +p. + Note : pour roquer dans une partie il faut sélectionner le roi ou la dame + d'abord, puis déplacer la pièce sur une tour. + +h3 Source + +p + | La + a(href="https://greenchess.net/rules.php?v=dual") variante Dual + |  sur greenchess.net. Probablement inventée par le webmaster + | Uray M. János, inspiré par la variante Coregal sur chessvariants.com. diff --git a/client/src/variants/Coregal.js b/client/src/variants/Coregal.js index 704ce4c5..e0729ac3 100644 --- a/client/src/variants/Coregal.js +++ b/client/src/variants/Coregal.js @@ -268,18 +268,21 @@ export class CoregalRules extends ChessRules { return false; } - updateCastleFlags(move, piece) { + // "twoKings" arg for the similar Twokings variant. + updateCastleFlags(move, piece, twoKings) { const c = V.GetOppCol(this.turn); const firstRank = (c == "w" ? V.size.x - 1 : 0); // Update castling flags if castling pieces moved or were captured const oppCol = V.GetOppCol(c); const oppFirstRank = V.size.x - 1 - firstRank; - if (move.start.x == firstRank && [V.KING, V.QUEEN].includes(piece)) { - if (this.castleFlags[c][1] == move.start.y) - this.castleFlags[c][1] = 8; - else if (this.castleFlags[c][2] == move.start.y) - this.castleFlags[c][2] = 8; - // Else: the flag is already turned off + if (move.start.x == firstRank) { + if (piece == V.KING || (!twoKings && piece == V.QUEEN)) { + if (this.castleFlags[c][1] == move.start.y) + this.castleFlags[c][1] = 8; + else if (this.castleFlags[c][2] == move.start.y) + this.castleFlags[c][2] = 8; + // Else: the flag is already turned off + } } else if ( move.start.x == firstRank && //our rook moves? diff --git a/client/src/variants/Twokings.js b/client/src/variants/Twokings.js new file mode 100644 index 00000000..9e82a245 --- /dev/null +++ b/client/src/variants/Twokings.js @@ -0,0 +1,83 @@ +import { ChessRules } from "@/base_rules"; +import { CoregalRules } from "@/variants/Coregal"; + +export class TwokingsRules extends CoregalRules { + static get PawnSpecs() { + return Object.assign( + {}, + ChessRules.PawnSpecs, + { promotions: ChessRules.PawnSpecs.promotions.concat([V.KING]) } + ); + } + + static IsGoodPosition(position) { + if (position.length == 0) return false; + const rows = position.split("/"); + if (rows.length != V.size.x) return false; + let kings = { "w": 0, "b": 0 }; + for (let row of rows) { + let sumElts = 0; + for (let i = 0; i < row.length; i++) { + if (['K','k'].includes(row[i])) kings[row[i]]++; + if (V.PIECES.includes(row[i].toLowerCase())) sumElts++; + else { + const num = parseInt(row[i]); + if (isNaN(num)) return false; + sumElts += num; + } + } + if (sumElts != V.size.y) return false; + } + // Two kings (at least) per side should be present: + if (Object.values(kings).some(v => v < 2)) return false; + return true; + } + + // Not scanning king positions. In this variant, scan the board everytime. + scanKings(fen) {} + + getCheckSquares(color) { + let squares = []; + const oppCol = V.GetOppCol(color); + for (let i=0; i