const piece2 = this.getPiece(x2,y2);
const color1 = this.getColor(x1,y1);
const color2 = this.getColor(x2,y2);
- return !["a","A"].includes(piece2) &&
+ return piece2 != "a" &&
((piece1 != "a" && color1 != color2) || (piece1 == "a" && color1 == color2));
}