if (move.vanish.length == 2 && move.appear.length == 2) return; //skip castle
const color = move.appear[0].c;
if (move.vanish.length == 0) {
if (move.vanish.length == 2 && move.appear.length == 2) return; //skip castle
const color = move.appear[0].c;
if (move.vanish.length == 0) {