if (
Math.abs(s.x - e.x) == 2 &&
s.y == e.y &&
- move.appear[0].p == V.PAWN
+ (move.appear.length > 0 && move.appear[0].p == V.PAWN)
) {
return {
x: (s.x + e.x) / 2,
}
let candidates = [0];
- for (let j = 1; j < moves1.length && moves1[j].eval == moves1[0].eval; j++)
- candidates.push(j);
+ for (let i = 1; i < moves1.length && moves1[i].eval == moves1[0].eval; i++)
+ candidates.push(i);
return moves1[candidates[randInt(candidates.length)]];
}