+ getPpath(b) {
+ let prefix = "";
+ if (
+ b[0] == 'a' ||
+ b[1] == V.INVISIBLE_QUEEN ||
+ Object.keys(V.IMMOBILIZE_DECODE).includes(b[1])
+ ) {
+ prefix = "Chakart/";
+ }
+ return prefix + b;
+ }
+
+ static ParseFen(fen) {
+ const fenParts = fen.split(" ");
+ return Object.assign(
+ ChessRules.ParseFen(fen),
+ { captured: fenParts[5] }
+ );
+ }
+
+ // King can be l or L (immobilized) --> similar to Alice variant
+ static IsGoodPosition(position) {
+ if (position.length == 0) return false;
+ const rows = position.split("/");
+ if (rows.length != V.size.x) return false;
+ let kings = { "k": 0, "K": 0, 'l': 0, 'L': 0 };
+ for (let row of rows) {
+ let sumElts = 0;
+ for (let i = 0; i < row.length; i++) {
+ if (['K','k','L','l'].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;
+ }
+ if (kings['k'] + kings['l'] != 1 || kings['K'] + kings['L'] != 1)
+ return false;
+ return true;
+ }
+
+ static IsGoodFlags(flags) {
+ // 4 for Peach + Mario w, b
+ return !!flags.match(/^[01]{4,4}$/);
+ }
+
+ setFlags(fenflags) {
+ // King can send shell? Queen can be invisible?
+ this.powerFlags = {
+ w: [{ 'k': false, 'q': false }],
+ b: [{ 'k': false, 'q': false }]
+ };
+ for (let c of ["w", "b"]) {
+ for (let p of ['k', 'q']) {
+ this.powerFlags[c][p] =
+ fenFlags.charAt((c == "w" ? 0 : 2) + (p == 'k' ? 0 : 1)) == "1";
+ }
+ }
+ }
+
+ aggregateFlags() {
+ return this.powerFlags;
+ }
+
+ disaggregateFlags(flags) {
+ this.powerFlags = flags;
+ }
+
+ getFen() {
+ return super.getFen() + " " + this.getCapturedFen();
+ }
+
+ getFenForRepeat() {
+ return super.getFenForRepeat() + "_" + this.getCapturedFen();
+ }
+
+ getCapturedFen() {
+ let counts = [...Array(10).fill(0)];
+ let i = 0;
+ for (let p of [V.ROOK, V.KNIGHT, V.BISHOP, V.QUEEN, V.PAWN]) {
+ counts[i] = this.captured["w"][p];
+ counts[5 + i] = this.captured["b"][p];
+ i++;
+ }
+ return counts.join("");
+ }