ChessDotNet.Pieces.Knight.IsValidMove C# (CSharp) Method

        public override bool IsValidMove(Move move, ChessGame game)
        {
            ChessUtilities.ThrowIfNull(move, "move");
            ChessUtilities.ThrowIfNull(game, "game");
            Position origin = move.OriginalPosition;
            Position destination = move.NewPosition;

            PositionDistance posDelta = new PositionDistance(origin, destination);
            if ((posDelta.DistanceX != 2 || posDelta.DistanceY != 1) && (posDelta.DistanceX != 1 || posDelta.DistanceY != 2))
                return false;
            return true;
        }