const piece = this.getPiece(move.start.x, move.start.y);
const captureMark = (move.vanish.length > move.appear.length ? "x" : "");
let pawnMark = "";
if (["p","s"].includes(piece) && captureMark.length == 1)
const piece = this.getPiece(move.start.x, move.start.y);
const captureMark = (move.vanish.length > move.appear.length ? "x" : "");
let pawnMark = "";
if (["p","s"].includes(piece) && captureMark.length == 1)