private void SpawnChessFigure(int index, int x, int y)
{
    GameObject go = Instantiate(chessFigures[index], GetTileCenter(x, y), chessFigures[index].transform.rotation) as GameObject;
    go.transform.SetParent(transform);
    ChessFigurePositions[x, y] = go.GetComponent<ChessFigure>();
    ChessFigurePositions[x, y].SetPosition(x, y);
    activeFigures.Add(go);
}