// NOTE: initial setup differs from the original; see
// https://www.chessvariants.com/large.dir/freeling.html
export class GrandRules extends ChessRules {
+
static IsGoodFen(fen) {
if (!ChessRules.IsGoodFen(fen)) return false;
const fenParsed = V.ParseFen(fen);
" w 0 " + flags + " - 00000000000000"
);
}
+
};