can't solve the challenge

Martina, what I've found is that the instructions for some challenges are done well, but those for others aren't. Some challenges seem to have been "class-room tested", to make sure they are understandable by students. Others clearly have not. In some cases instructors have clarified the instructions when they see that students find them confusing. But some instructors seem not to care.

I'm a bit puzzled, though, why you responded this way for this challenge, as it seems to be one of the more straight-forward ones. Of course, everyone gets hung up on different things -- I know I have!

So let's go through step by step.

(1) Declare a class named Shape Start with the keyword class, then the name, capitalized, then an opening and closing curly brace:

class Shape {   }

(2) *with a variable property named numberOfSides of type Int: * Start with the var keyword, then the name of the property, camelCase with lower case first letter, then, since you are not assigning a value, explicitly indicate the type, as Swift will not be able to infer it from the value:

class Shape {
    var numberOfSides: Int
}

(3) write an initializer method As the instructions remind you, this is a class, and does not have a default initializer, as do structs, so you need to write it. Initializers must make sure that all instance properties have values. Since their is one such property, it needs to have one parameter, and then it needs to assign the value passed in with that parameter to the numberOfSides property. To disambiguate between the parameter name and the property name you use the keyword self followed by a dot:

class Shape {
    var numberOfSides: Int

    init(numberOfSides: Int) {
        self.numberOfSides = numberOfSides
    }

}

(4) create an instance and assign it to a constant named someShape Start with the keyword let, then add the name of the constant followed by the assignment operator, then the name of the class followed by the name of the parameter and the value that you want to pass to the class as the value of the property:

let someShape = Shape(numberOfSides: 6)

Hope this helps.

Is it just me or are the instructions of challenges really not clear? it's always hard for me to understand exactly whet i have to do

This worked for me:

class Shape {

    var numberOfSides: Int = 2

    }

let someShape = Shape()

This worked for me, In my case - class 'Shape' was lower cased once I upper cased Shape it passed the challenge

// Enter your code below

class Shape{

   var numberOfSides: Int
   init (numberOfSides: Int){
   self.numberOfSides = numberOfSides
   }

}

let someShape = Shape(numberOfSides: 3)

It's the whole "Let's phrase this like we're trying to answer a question in Jeopardy" thing that threw me.