What is an unclear position?

I don`t understand, what is an unclear position? I mean I know it means it`s not possible to evaluate who stands better but why is it not possible?

Stop starting threads and start playing chess.

Because it's too complicated.

Note that an unclear position to a beginner would not be an unclear position to a master.

When someone is commenting on a game, and they say it's unclear, it means they don't have the time (or are unwilling to spend the energy) on exhaustively analyzing the position to a conclusion. You may think if they're writing a book, they have lots of time, but this is not always true.

Kasparov once said he still goes over many of his old games, and decades later can still discover something new.

Hmm, I tend to think of an unclear position as one that has wildly deep positional features. Not that there aren't tactics, but the tactics are easy enough to see compared to how hard they are to evaluate.

If you mean more in a theoretical sense, that if we could calculate absurdly huge numbers per second that nothing would be unclear, I guess I'd have to agree.

Ok, the winawer comes to mind first.

Yes, not as hard for GMs as for me (lol) but in some positions there are not really many tactics more than simple 2 or 3 move combinations, but how to evaluate different moves I'm totally confused.

Ok, I can usually say something general about it like white will win the endgame but black's pieces are very active. White should neutralize the activity and trade pieces while black should not let white do this...
But that doesn't mean I'll have a clue what I'm doing lol.

Maybe a better example is a complex endgame. There may be practically zero tactics, but it can be completely baffling.

Its possible to evaluate it alright.

Except that one evaluation says this and another evaluation says that, so it's unclear what the correct evaluation would be.

That one was for free.

When it's difficult to determine which side's imbalances are more important and why. With tactically complicated positions this can mean that you can analyze lines until they're quiet, but you don't know how to evaluate them. 

Andrew Martin: Unclear is a word or evaluation often used by an annotator when they don't know what's going on in a position! It's used less these days now that computers have turned everyone into armchair grandmasters.

Isn't an unclear position self explanitory? I mean it could mean different things.. dynamic, complicated, drawish.  Think about when you are playing a game.. when you are not so sure what to do, and can't come up with a cool plan and neither can your opponent.. Its unclear .. opposed to being a piece up and a concrete idea to check mate the enemy king

its unclear to me what this unclear means