private int?CheckRoundWinner(Round round)
        {
            var movesList = round.Moves.ToList();
            var winners   = movesList.FindAll(p => movesList.Exists(m => _moveService.Kills(p.MoveId.Value, m.MoveId.Value)));

            if (winners != null && winners.Count == 1)
            {
                return(winners.FirstOrDefault().PlayerId);
            }
            else
            {
                return(null);
            }
        }