"Both sides of the mirror": "Both sides of the mirror",
"Capture all of a kind": "Capture all of a kind",
"Capture en passant": "Capture en passant",
+ "Capture powers": "Capture powers",
"Captures reborn": "Captures reborn",
"Change colors": "Change colors",
"Dangerous collisions": "Dangerous collisions",
"Both sides of the mirror": "Ambos lados del espejo",
"Capture all of a kind": "Capturar todo del mismo tipo",
"Capture en passant": "Capturar en passant",
+ "Capture powers": "Capturar los poderes",
"Captures reborn": "Las capturas renacen",
"Change colors": "Cambiar colores",
"Dangerous collisions": "Colisiones peligrosas",
"Both sides of the mirror": "Les deux côté du miroir",
"Capture all of a kind": "Capturez tout d'un même type",
"Capture en passant": "Capturer en passant",
+ "Capture powers": "Capturer les pouvoirs",
"Captures reborn": "Les captures renaissent",
"Change colors": "Changer les couleurs",
"Dangerous collisions": "Collisions dangeureuses",
--- /dev/null
+p.boxed
+ | Captures are mandatory, with transformation into the captured piece.
+
+p.
+ Everything is the same as in orthodox rules, except that when possible,
+ captures are forced.
+ The goal is still to checkmate, and stalemate is a draw.
+
+p.
+ After each capture the capturer takes the nature of the captured piece.
+ For example after 1.e4 a6 2.Bxa6 is forced and a6 is now a white pawn.
+
+figure.diagram-container
+ .diagram
+ | fen:rnbqkbnr/1ppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR a6:
+ figcaption After 1.e4 a6, 2.Bxa6 turns the bishop into a pawn.
+
+p If the king captures, it transforms as well but stays royal.
+
+h3 More information
+
+p
+ a(href="https://www.chessvariants.com/difftaking.dir/cannibal.html") Cannibal Chess
+ | on chessvariants.com. I added the forced captures for more fun.
--- /dev/null
+p.boxed
+ | Las capturas son obligatorias, con transformación en la pieza capturada.
+
+p.
+ Todo va como el ajedrez ortodoxo, pero cuando es posible
+ las capturas son forzadas.
+ El objetivo aún es de matar, y el empate es tablas.
+
+p.
+ Después de cada captura, el atacante toma la naturaleza de la pieza capturada.
+ Por ejemplo, después de 1.e4 a6 2.Bxa6 es forzado y a6 ahora es un peón blanco.
+
+figure.diagram-container
+ .diagram
+ | fen:rnbqkbnr/pppp1pp1/7p/4P3/8/8/PPP1PPPP/RNBQKBNR:
+ figcaption Después de 1.e4 a6, 2.Bxa6 transforma el alfil en un peón.
+
+p Si el rey captura, también se transforma pero permanece real.
+
+h3 Más información
+
+p
+ | La
+ a(href="https://www.chessvariants.com/difftaking.dir/cannibal.html") variante Cannibal
+ | en chessvariants.com.
+ | Esta regla me parece más divertida con las capturas obligatorias.
--- /dev/null
+p.boxed
+ | Les captures sont obligatoires, avec transformation en la pièce capturée.
+
+p.
+ Tout se déroule comme aux échecs orthodoxes, mais quand elles sont possibles
+ les captures sont forcées.
+ L'objectif est toujours de mater, et le pat fait nulle.
+
+p.
+ Après chaque capture, l'attaquant prend la nature de la pièce capturée.
+ Par exemple après 1.e4 a6 2.Bxa6 est forcé et a6 est maintenant un pion blanc.
+
+figure.diagram-container
+ .diagram
+ | fen:rnbqkbnr/1ppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR a6:
+ figcaption Après 1.e4 a6, 2.Bxa6 transforme le fou en un pion.
+
+p Si le roi capture, il se transforme aussi mais reste royal.
+
+h3 Plus d'information
+
+p
+ | La
+ a(href="https://www.chessvariants.com/difftaking.dir/cannibal.html") variante Cannibal
+ | sur chessvariants.com.
+ | Cett règle me paraît plus amusante avec des captures obligatoires.
--- /dev/null
+import { ChessRules } from "@/base_rules";
+
+export class CannibalRules extends ChessRules {
+ // Trim all non-capturing moves
+ static KeepCaptures(moves) {
+ return moves.filter(m => m.vanish.length == 2 && m.appear.length == 1);
+ }
+
+ // Stop at the first capture found (if any)
+ atLeastOneCapture() {
+ const color = this.turn;
+ const oppCol = V.GetOppCol(color);
+ for (let i = 0; i < V.size.x; i++) {
+ for (let j = 0; j < V.size.y; j++) {
+ if (
+ this.board[i][j] != V.EMPTY &&
+ this.getColor(i, j) != oppCol &&
+ this.filterValid(this.getPotentialMovesFrom([i, j])).some(m =>
+ // Warning: discard castle moves
+ m.vanish.length == 2 && m.appear.length == 1)
+ ) {
+ return true;
+ }
+ }
+ }
+ return false;
+ }
+
+ getPotentialMovesFrom([x, y]) {
+ let moves = super.getPotentialMovesFrom([x, y]);
+ // Transform capturers, except for the king
+ moves.forEach(m => {
+ if (
+ m.appear[0].p != V.KING &&
+ m.vanish.length == 2 &&
+ m.appear.length == 1 &&
+ m.vanish[0].p != m.vanish[1].p
+ ) {
+ m.appear[0].p = m.vanish[1].p;
+ }
+ });
+ return moves;
+ }
+
+ getPossibleMovesFrom(sq) {
+ let moves = this.filterValid(this.getPotentialMovesFrom(sq));
+ const captureMoves = V.KeepCaptures(moves);
+ if (captureMoves.length > 0) return captureMoves;
+ if (this.atLeastOneCapture()) return [];
+ return moves;
+ }
+
+ getAllValidMoves() {
+ const moves = super.getAllValidMoves();
+ if (moves.some(m => m.vanish.length == 2)) return V.KeepCaptures(moves);
+ return moves;
+ }
+
+ static get SEARCH_DEPTH() {
+ return 4;
+ }
+};
('Baroque', 'Exotic captures'),
('Benedict', 'Change colors'),
('Berolina', 'Pawns move diagonally'),
+ ('Cannibal', 'Capture powers'),
('Capture', 'Mandatory captures'),
('Checkered', 'Shared pieces'),
('Chess960', 'Standard rules'),
projects / vchess.git / commitdiff