[HttpGet] public ActionResult <BoardState> Get([FromRoute] string gameId)
        {
            var err = boardState.TryGetBoardState(gameId, out Models.BoardState bstate);

            if (!err)
            {
                return(bstate);
            }
            if (err == Error.Codes.E01GameNotFound)
            {
                return(NotFound());
            }
            return(Conflict());
        }