Koans string problem maybe a bug

Sorry, I don’t get it… Also I do not see any relationship between the code you show here and the code you linked…

I have to say though that I never did the koans beyond a certain point… Its not a way for me to learn…

But what I can tell is, that you create 2 strings "An incredible day" and "incredible" and assert for equality. As you clearly can see, those are not equal…