return { x: 11, y: 11 };
}
- static GenRandInitFen() {
+ static GenRandInitFen(randomness) {
+ if (!randomness) randomness = 2;
+ if (randomness == 0)
+ return "11/11/11/11/11/11/11/11/11/QRBNP1pnbrq/KRBNP1pnbrk w 0";
+
let pieces = { w: new Array(10), b: new Array(10) };
// Shuffle pieces on first and second rank
for (let c of ["w", "b"]) {
+ if (c == 'b' && randomness == 1) {
+ pieces['b'] = JSON.parse(JSON.stringify(pieces['w'])).reverse();
+ pieces['b'] =
+ pieces['b'].splice(5,10).reverse().concat(
+ pieces['b'].splice(0,5).reverse());
+ break;
+ }
+
// Reserve 4 and 5 which are pawns positions
let positions = ArrayFun.range(10).filter(i => i != 4 && i != 5);
"11/11/11/11/11/11/11/11/11/" +
whiteFen.substr(5).split("").reverse().join("") +
"1" +
- blackFen.substr(5).split("").reverse().join("") +
+ blackFen.substr(5).split("").join("") +
"/" +
- whiteFen.substr(0,5) + "1" + blackFen.substr(0,5) +
+ whiteFen.substr(0,5) +
+ "1" +
+ blackFen.substr(0,5).split("").reverse().join("") +
" w 0"
);
}
return m.vanish.length == 1;
});
- // Captures
- const shiftX = -1;
- for (let shiftY of [-1, 1]) {
- if (
- V.OnBoard(x + shiftX, y + shiftY) &&
- this.board[x + shiftX][y + shiftY] != V.EMPTY &&
- this.canTake([x, y], [x + shiftX, y + shiftY])
- ) {
- moves.push(this.getBasicMove([x, y], [x + shiftX, y + shiftY]));
+ // Captures (in both directions)
+ for (let shiftX of [-1, 1]) {
+ for (let shiftY of [-1, 1]) {
+ if (
+ V.OnBoard(x + shiftX, y + shiftY) &&
+ this.board[x + shiftX][y + shiftY] != V.EMPTY &&
+ this.canTake([x, y], [x + shiftX, y + shiftY])
+ ) {
+ moves.push(this.getBasicMove([x, y], [x + shiftX, y + shiftY]));
+ }
}
}
if (this.kingPos[color][0] == 0)
// The opposing edge is reached!
return color == "w" ? "1-0" : "0-1";
- return "*";
+ if (this.atLeastOneMove())
+ return "*";
+ // Stalemate (will probably never happen)
+ return "1/2";
}
static get SEARCH_DEPTH() {