From: Benjamin Auder Date: Sat, 18 Apr 2020 02:51:07 +0000 (+0200) Subject: Add Koth (experimental) X-Git-Url: https://git.auder.net/variants/img/pieces/%7B%7B%20asset%28%27mixstore/doc/R.css?a=commitdiff_plain;h=236485b53993f2adfd588022e2899a39491fc825;p=vchess.git Add Koth (experimental) --- diff --git a/TODO b/TODO index 97072023..c1197fa8 100644 --- a/TODO +++ b/TODO @@ -5,10 +5,6 @@ https://www.chessvariants.com/d.betza/chessvar/trapdoor.html https://www.chessvariants.com/crossover.dir/koopachess.html --> Can a stunned piece capture? Maybe not. ...recover? After 5 moves? Never? -Diamond Chess [Rynd] (J. A. -Porterfield Rynd, 1886) --> Berolina2 ? -https://www.chessvariants.com/rules/diamond-chess - Bicolour Chess (Gabriel Authier, 1958). v1 et v2 : (Roméo Bédoni, 1958) Kings are subject to check and checkmate by own as well as opponent’s pieces. The Q and @@ -17,8 +13,6 @@ QN are interchanged in the array v2: y but a player may capture his own men (TODO: only v2?) -Koth : king of the hill, king cannot move into check, giving check is forbidden (no checkmate). - Berolina Grid Chess, also known as Gridolina (originator not noted). A combination of Berolina and Grid Chess. diff --git a/client/src/components/MoveList.vue b/client/src/components/MoveList.vue index d47a1a4a..1f94d638 100644 --- a/client/src/components/MoveList.vue +++ b/client/src/components/MoveList.vue @@ -241,7 +241,7 @@ span#rulesBtn button margin: 0 &.active - background-color: #50E99A + background-color: #48C9B0 #aboveMoves button padding-bottom: 5px diff --git a/client/src/translations/en.js b/client/src/translations/en.js index e3fb36df..375bb4d4 100644 --- a/client/src/translations/en.js +++ b/client/src/translations/en.js @@ -190,6 +190,7 @@ export const translations = { "Japanese Chess": "Japanese Chess", "Keep antiking in check (v1)": "Keep antiking in check (v1)", "Keep antiking in check (v2)": "Keep antiking in check (v2)", + "King of the Hill": "King of the Hill", "Kings cross the 8x8 board": "Kings cross the 8x8 board", "Kings cross the 11x11 board": "Kings cross the 11x11 board", "Landing on the board": "Landing on the board", diff --git a/client/src/translations/es.js b/client/src/translations/es.js index 556072bd..932bc2b5 100644 --- a/client/src/translations/es.js +++ b/client/src/translations/es.js @@ -190,6 +190,7 @@ export const translations = { "Japanese Chess": "Ajedrez japonés", "Keep antiking in check (v1)": "Mantener el antirey en jaque (v1)", "Keep antiking in check (v2)": "Mantener el antirey en jaque (v2)", + "King of the Hill": "Rey de la Colina", "Kings cross the 8x8 board": "Los reyes cruzan el 8x8 tablero", "Kings cross the 11x11 board": "Los reyes cruzan el 11x11 tablero", "Landing on the board": "Aterrizando en el tablero", diff --git a/client/src/translations/fr.js b/client/src/translations/fr.js index eb345b8e..9243c987 100644 --- a/client/src/translations/fr.js +++ b/client/src/translations/fr.js @@ -190,6 +190,7 @@ export const translations = { "Japanese Chess": "Échecs japonais", "Keep antiking in check (v1)": "Gardez l'antiroi en échec (v1)", "Keep antiking in check (v2)": "Gardez l'antiroi en échec (v2)", + "King of the Hill": "Roi de la Colline", "Kings cross the 8x8 board": "Les rois traversent l'échiquier 8x8", "Kings cross the 11x11 board": "Les rois traversent l'échiquier 11x11", "Landing on the board": "Débarquement sur l'échiquier", diff --git a/client/src/translations/rules/Koth/en.pug b/client/src/translations/rules/Koth/en.pug new file mode 100644 index 00000000..422e8faf --- /dev/null +++ b/client/src/translations/rules/Koth/en.pug @@ -0,0 +1,21 @@ +p.boxed + | Bring the king to the middle to win. Giving check is forbidden. + +p Orthodox rules apply, with two changes: +ul + li. + The goal is to bring the king on one of the central squares + d4, e4, d5 or e5. "Koth" stands indeed for "King of the Hill". + li Giving check is forbidden (thus no checkmate is possible). + +figure.diagram-container + .diagram + | fen:k4r2/1p2p3/2P4p/5pp1/p2B4/5KP1/PPQ1P2P/R7: + figcaption White can win in two moves: 1.Qxf5 and 2.Ke4# + +h3 Source + +p + | Modified from Koth as playable + a(href="https://lichess.org/variant/kingOfTheHill") on lichess + | . Experimental change: I'd like to see how it plays without checks :) diff --git a/client/src/translations/rules/Koth/es.pug b/client/src/translations/rules/Koth/es.pug new file mode 100644 index 00000000..5e84f938 --- /dev/null +++ b/client/src/translations/rules/Koth/es.pug @@ -0,0 +1,22 @@ +p.boxed + | Lleva el rey al centro para ganar. Prohibido de dar jaque. + +p Se aplican las reglas ortodoxas, con dos cambios: +ul + li. + El objetivo es llevar el rey a uno de los espacios centrales d4, e4, d5 + o e5. "Koth" es de hecho la abreviatura inglesa para "Rey de la Colina". + li Los jaques son prohibidos (por lo tanto, el jaque mate es imposible). + +figure.diagram-container + .diagram + | fen:k4r2/1p2p3/2P4p/5pp1/p2B4/5KP1/PPQ1P2P/R7: + figcaption Las blancas pueden ganar en dos movimientos: 1.Qxf5 y 2.Ke4# + +h3 Fuente + +p + | Cambiado de la variante Koth jugable + a(href="https://lichess.org/variant/kingOfTheHill") en lichess + | . Cambio experimental: me gustaría ver los efectos de la condición que + | previene jaques :) diff --git a/client/src/translations/rules/Koth/fr.pug b/client/src/translations/rules/Koth/fr.pug new file mode 100644 index 00000000..79c0272b --- /dev/null +++ b/client/src/translations/rules/Koth/fr.pug @@ -0,0 +1,22 @@ +p.boxed + | Amenez le roi au centre pour gagner. Interdit de donner échec. + +p Les règles orthodoxes s'appliquent, avec deux changements : +ul + li. + L'objectif est d'amener le roi sur l'une des cases centrales d4, e4, d5 + ou e5. "Koth" est en effet l'abbréviation anglaise de "Roi de la Colline". + li Les échecs sont interdits (l'échec et mat est donc imppossible). + +figure.diagram-container + .diagram + | fen:k4r2/1p2p3/2P4p/5pp1/p2B4/5KP1/PPQ1P2P/R7: + figcaption Les blancs peuvent gagner en deux coups : 1.Qxf5 et 2.Ke4# + +h3 Source + +p + | Modifié depuis la variante Koth jouable + a(href="https://lichess.org/variant/kingOfTheHill") sur lichess + | . Changement expérimental : j'aimerais voir les effets de la condition + | empêchant les échecs :) diff --git a/client/src/variants/Koth.js b/client/src/variants/Koth.js new file mode 100644 index 00000000..e286862d --- /dev/null +++ b/client/src/variants/Koth.js @@ -0,0 +1,48 @@ +import { ChessRules } from "@/base_rules"; + +export class KothRules extends ChessRules { + filterValid(moves) { + if (moves.length == 0) return []; + const color = this.turn; + const oppCol = V.GetOppCol(color); + return moves.filter(m => { + this.play(m); + // Giving check is forbidden as well: + const res = !this.underCheck(color) && !this.underCheck(oppCol); + this.undo(m); + return res; + }); + } + + getCurrentScore() { + // Turn has changed: + const color = V.GetOppCol(this.turn); + if ( + [3,4].includes(this.kingPos[color][0]) && + [3,4].includes(this.kingPos[color][1]) + ) { + // The middle is reached! + return color == "w" ? "1-0" : "0-1"; + } + if (this.atLeastOneMove()) return "*"; + // Stalemate (will probably never happen) + return "1/2"; + } + + evalPosition() { + // Count material: + let evaluation = super.evalPosition(); + // Ponder with king position: + return ( + evaluation/5 + + ( + Math.abs(this.kingPos["w"][0] - 3.5) + + Math.abs(this.kingPos["w"][1] - 3.5) + ) / 2 - + ( + Math.abs(this.kingPos["b"][0] - 3.5) + + Math.abs(this.kingPos["b"][1] - 3.5) + ) / 2 + ); + } +}; diff --git a/server/db/populate.sql b/server/db/populate.sql index 21f7c7a8..51dae3fe 100644 --- a/server/db/populate.sql +++ b/server/db/populate.sql @@ -48,6 +48,7 @@ insert or ignore into Variants (name, description) values ('Knightmate', 'Mate the knight'), ('Knightrelay1', 'Move like a knight (v1)'), ('Knightrelay2', 'Move like a knight (v2)'), + ('Koth', 'King of the Hill'), ('Losers', 'Get strong at self-mate'), ('Magnetic', 'Laws of attraction'), ('Makruk', 'Thai Chess'),