Which Sicilian Defense (for Black) should I study and make part of my repertoire?

The game is dynamically equal at that point, which is a far cry from "losing".

i would not have excepted such an unprofessional comment from an IM. Is a mistake Mr.IM

white has no way to find an advantage if black isnt dumb

And Black has no way to find an advantage if White isn't dumb.  You don't seem to understand what "losing" means.

you dont seem to understand what being up 2 pawns and then if you defend correctly you are winning means

That is not the situation after 12. h4.  It is only the case in your fictitious "forced" pawn sacrifice.  Reread #65 where I point out that the pawn sacrifice is not forced, and is not even popular.

What "forced" pawn sac are you refering to?

The one you claim is "forced".

The situation after 12. h4:

Black is not up 2 pawns in this position.  That is, White is not losing.  You then give the following continuation:

Where you say

Your conclusion would be fine, if White was actually forced into that situation.  Unfortunately for you, he is not, which means 12. h4 is not losing (as you keep claiming).

In short, if 12. h4 is a losing move, someone forgot to tell all these Super-GMs.  I guess those Super-GMs playing Black just don't know what they are doing, since if they did they obviously would have won all those games ...

sicilian needs a lost of study right

If you want you maybe go back and reread the comments more carfeully. The conversation was over a while ago s please stop bumping it. The point was to tell the OP that the dragon is a good variation to play n the Sicilian. unfollowing

Kalashnikov is also an aggressive Sicilian

I prefer Accelerated Dragon https://chessmood.com/course/sicilian-defence-accelerated-dragon Check this course out.

This conversation was over months ago.  You bumped it by claiming that 12. h4 is a losing move for White (it isn't).  While I agree the Dragon is an acceptable variation for Black to play, he must be prepared for the Yugoslav Attack if he is going to play it, which will require a significant amount of memorization in the Class A and higher levels.  Again, nothing wrong with that as long as you go into it knowing what to expect.

But your assertions about specific moves (as well as your comment about the Bg5 move) are completely wrong, as has been pointed out.

Of course the najdorf. Enough theory to keep you happy sad mad and glad

indeed. As a Sicilian Najdorf Advocate, in this particular case; I agree with mostly everyone~there are a multitude of systems to fit one's "taste" (I'm into 2. ... d6 systems more or less). Four Knights and 2. ... e6 are "easy" to get into; very trappy IF you don't know certain lines as white. Seemingly less theoretical but more so limiting to me. I like to teach 2. ... Nc6 & 2. ... e6 systems to beginners because it is more "hands on", "out of the box ready to go" lines variations. But then, like anything... you have to have Commitment. Whether an opening is "easy" or sophisticated, you have to have certain expectations that you can't just get by casually with comments in a certain forum. Due diligence on your part is necessary. Adhering to basic principles of Defense no matter what the opening is, is the most important thing. Ingrain these things first: which are Positional & Strategic~Time, Force, Space, King Safety, Pawn Structure (majority or minority on the wings, center control) Material on hand; basic tactics & rudimentary endgame patterns & themes. Fundamental principles of using the Initiative. Core roots. Master them and you can master any Defense. Open, Semi-Open, Closed. Nuff said! Best wishes✌🏽

how about.... the nimzowitch variation

indeed. Heh. I'm quite surprised you should ask my friend (especially since I've always found you to be an accomplished player & commentor in these forums)!🤔 Okay, I'll play 🤙🏼. For me, it's been all about a certain philosophy(s) I try to follow on defense and not soo much on lines, variations, "systems". Yes, I said what I said for this forum's sake and it is generally how I feel about the other lines, but ultimately it's just my own opinion (philosophy). To me, 2. .. Nc6 & 2. ... e6 are blatantly obvious to play, pretty straightforward development as many seasoned players, masters can attest to (including your point about the KB) which is why I think generally those types of Sicilians are recommended for beginners, experienced casual players and the like. As for me, a very seasoned amateur vet/patzer (heh) I like ta play a sort of "Ninja" defense-quiet, sneaky, measured (but not conservative). Which is why I play the Naj. As for the other 2. ... d6 stuff; sure, I've played them all at one time or another and found for myself that not committing a Nc6 or a "fixed" e6 target on a common attack diag early on gives me less headache, trepidation game time. Of course, there are exceptions but again, that's just me. Last point I'll make is that, I've found over the years 2. ... d6 was easier for me to defend vs anti-sicilians. I could find moves better OTB to equalize faster (when I was starting out and know much theory). Well, I hope ALL that does for you! Thanks ✌🏽

@Optimissed~btw when I mentioned "limiting " I meant in "possibilities" in the cruxt of overall defensive play. Sure, the KB is active to your point in e6 lines, but "active" for what? Without the Initiative, it's mostly passive and defensive in the Opening as it is. Gradually, as the game goes on, then you can look at certain Positional markers to better place it once you Equalize. Which is the Name of the Game, with all due respect of course. 🤙🏼

thx for the info guys

Kan is nice