Hello!

I´ve found such a statement:

En sonki alıştırmandan anladığım kadarıyla ileri seviyeye çok yakınsın.

I believe it means From your latest exercise I realize that you´re (as far as) very close to the advanced level.

And I wonder, if I say it this way:

Kadarıyla ileri seviyeye çok yakın olduğunu en sonki alıştırmandan anlıyorum.

Would it be exactly the same?

Because I have usually encountered constructions like ... verb1-diğini ... verb2-iyorum. And here it goes: ... verb2-diğim ... verb1-iyor.

That´s wrong!

The correct one is "en sonuncu" and it means "the final/last one".

Also "en sondaki" would have a close meaning and would mean "the one at the very end".

Ok, but apart from that word, is my paraphrase right? Do they mean the same?

No!

I believe it means From your latest exercise I realize that you´re (as far as) very close to the advanced level.

Kadarıyla is meaningless. kadar is  a postposition and cannot be used alone.

x kadar = as much/far as x

x is missing in your sentence.

Kadarıyla ileri seviyeye çok yakın olduğunu en sonki alıştırmandan anlıyorum.

Hmm.. actually what´s the function of -ı and -yla after "kadar"? Can I say just En sonki alıştırmandan anladığım kadar ileri seviyeye çok yakınsın ?

No you can´t, because it´s still not OK (red ones). If you fix it, would be OK.

Oh yeah, now I see! So, anladığım kadarıyla is a fixed phrase that can´t lose the "kadar" part, right? So I definitely CAN´T say only En sondaki alıştırmandan anladığım ileri seviyeye çok yakınsın., huh? Sorry, I was in doubt, because I didn´t know the phrase "anladığım kadarıyla" before...

Red one has a different meaning:

You are very close to the advanced level which I see/realise from your latest exercise.

literally:

Anladığım kadar = as much/far as I understand/understood

Anladığım kadar-ı = as much/far as I understand/understood of it

Anladığım kadar-ı ile = with as much/far as I understand/understood of it

Thanks a lot! Now everything is clear for me

Anladığım kadar-ı ile = with as much/far as I understand/understood of it

A better English for the above would be:

With respect to how much I understand/understood of it