https://www.chessvariants.com/mvopponent.dir/hypnotic-chess.html
https://www.chessvariants.com/mvopponent.dir/mesmer-chess.html
+https://brainking.com/en/GameRules?tp=47&fwa=ArchivedGame!g=8204276$i=1
+
Squatter Chess: safe on last rank = win
Companion Chess : pieces of same nature don't attack each others
https://www.chessvariants.com/difftaking.dir/brotherhood.html
// 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)
+ this.getColor(i, j) == color &&
+ this.filterValid(this.getPotentialMovesFrom([i, j])).some(m => {
+ return (
+ // Warning: discard castle moves
+ m.vanish.length == 2 && m.appear.length == 1 &&
+ this.filterValid([m]).length == 1
+ );
+ })
) {
return true;
}
return b;
}
+ getEpSquare(moveOrSquare) {
+ if (!moveOrSquare) return undefined;
+ if (typeof moveOrSquare === "string") {
+ const square = moveOrSquare;
+ if (square == "-") return undefined;
+ return V.SquareToCoords(square);
+ }
+ const move = moveOrSquare;
+ const s = move.start,
+ e = move.end;
+ if (
+ s.y == e.y &&
+ Math.abs(s.x - e.x) == 2 &&
+ [V.PAWN, V.HIDDEN_QUEEN].includes(move.vanish[0].p)
+ ) {
+ return {
+ x: (s.x + e.x) / 2,
+ y: s.y
+ };
+ }
+ return undefined; //default
+ }
+
isValidPawnMove(move) {
const color = move.vanish[0].c;
const pawnShift = color == "w" ? -1 : 1;
return super.getPotentialMovesFrom([x, y]);
}
+ getEnpassantCaptures([x, y], shiftX) {
+ const Lep = this.epSquares.length;
+ const epSquare = this.epSquares[Lep - 1];
+ let enpassantMove = null;
+ if (
+ !!epSquare &&
+ epSquare.x == x + shiftX &&
+ Math.abs(epSquare.y - y) == 1
+ ) {
+ enpassantMove = this.getBasicMove([x, y], [epSquare.x, epSquare.y]);
+ enpassantMove.vanish.push({
+ x: x,
+ y: epSquare.y,
+ // Captured piece may be a hidden queen
+ p: this.board[x][epSquare.y][1],
+ c: this.getColor(x, epSquare.y)
+ });
+ }
+ return !!enpassantMove ? [enpassantMove] : [];
+ }
+
getPotentialPawnMoves([x, y]) {
const piece = this.getPiece(x, y);
const promotions =
}
getNotation(move) {
- if (this.getPiece(move.start.x, move.start.y) != V.HIDDEN_QUEEN)
+ // Not using getPiece() method because it would transform HQ into pawn:
+ if (this.board[move.start.x][move.start.y][1] != V.HIDDEN_QUEEN)
return super.getNotation(move);
const finalSquare = V.CoordsToSquare(move.end);
if (move.appear[0].p == V.QUEEN) {
// 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.getPotentialMovesFrom([i, j]).some(m =>
- // Warning: discard castle moves
- m.vanish.length == 2 && m.appear.length == 1)
+ this.getColor(i, j) == color &&
+ this.getPotentialMovesFrom([i, j]).some(m => {
+ return (
+ // Warning: discard castle moves
+ m.vanish.length == 2 && m.appear.length == 1 &&
+ this.filterValid([m]).length == 1
+ );
+ })
) {
return true;
}
getPossibleMovesFrom(sq) {
let moves = this.filterValid(this.getPotentialMovesFrom(sq));
const captureMoves = V.KeepCaptures(moves);
+
+console.log(this.atLeastOneCapture());
+
if (captureMoves.length > 0) return captureMoves;
if (this.atLeastOneCapture()) return [];
return moves;
// 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.getColor(i, j) == color &&
this.getPotentialMovesFrom([i, j]).some(m => m.vanish.length == 2)
) {
return true;
},
tryNotify: function(id, message) {
- UserModel.getOne("id", id, "name, email", (err, user) => {
+ UserModel.getOne("id", id, "name, email, notify", (err, user) => {
if (!err && user.notify) UserModel.notify(user, message);
});
},