This nameless line is highly effective against the Sicilian Defense

Common sense is the worst kind of sense

it's literally a lie

Everyone has their own version of it

There are mathematical certainties, scientific certainties.

I'm winning 60% of my games with this line at mid-to-high levels on Lichess in Bullet (2800) and Blitz (2500).

This is a mathematical certainty, which means this line works quite well at mid-to-high levels and you barely need to study any theory.

The Sicilian player almost never faces it, and even if they have studied it, they usually lack the practical experience.

So, no matter how much theory you know, if you rarely get to practice it because your opponents rarely play this line, chances are you won’t get good results against it.

That makes this variation an incredibly powerful weapon and unbelievably, it doesn’t even have a name!

Humanity as a whole has underestimated this brilliant chess line against the Sicilian Defense!

This line isn't hard to play against as Black, if anyone has studied the variations with 1 e4 c5 2 Nc3 a6!? (a line similar to the O.Kelly (2 Nf3 a6), which is getting a lot of attention at the Super GM level, since it avoids 2...Nc6 (normally, delaying ...d6 to get in ...e6, ...Nge7 and ...d5 quickly, is the best way to "refute" the "Grand Prix" attack, thus the reason for 2...Nc6 instead of 2...d6) 3 Bb5 Nd4, which is fully equal for Black, but rather annoying if you haven't studied it deeply), as you are getting a similar position with 3 d4 cxd4 4 Qxd4 Nc6, etc.

(example: 1 e4 c5 2 Nc3 a6 3 d4 cxd4 4 Qxd4 Nc6 5 Qe3 (5 Qd3 b5!) Nf6 6 Nf3 d5!)

Although the normal move order that happens more often here is 1 e4 c5 2 Nf3 d6 3 Nc3 a6!?, then a bunch of grandmasters end up playing 4 g3, when 4 b5? 5 d4! to take on d4 with N leads to a VERY bad line for Black while 1 e4 c5 2 Nc3 a6 3 g3 b5! is actually a main line of this sidelinei (very big difference in playability for Black when Nf3 and d6 is not played).

I've had to spent some time on this system the last few weeks, due to someone in my chess club liking 2 Nc3 and 3 Bb5.

I'm not saying it's difficult to play with Black, what I'm saying is that it's very easy to play with White, unlike the classic Morra Gambit where you have to memorize many lines and then deal with the declinations.

In this nameless variation, you almost always reach the same positions, so the only thing you need to do with White is memorize those more typical lines, and it's not that hard.

I’m not sure if it was you or another user who wisely recommended the critical line with a6 and e6, which are undoubtedly the most ambitious options for Black to "refute" the variation.

I acknowledge that in practice, it can be difficult for White to play that line, which is why I’ve changed my approach and no longer play the typical Bf4 followed by 0-0-0.

I prefer a simple and calm game with Nf3, Be2, and 0-0 almost always.

I don’t care if the position is +0.00, I feel more comfortable in these types of positions due to the "psychological effect" of the early-developed provoking queen in the opening.

It's like those people who play Qf3-Bc4 as a strategy, or for example the central opening of e4 e5 d4 exd4 Qxd4, which has very good practical results and where White can choose from many different lines, such as Qc4 (Hall Variation), or the main line with Qe3, or even Qd3 or Qa4, which is much stranger and similar to the Scandinavian, but with White pieces.

When I played the Sicilian Defense with Black, the only line I ever studied deeply was precisely the Löwental Variation, after seeing a game by my compatriot Paco Vallejo where he defeated Vladimir Kramnik in just a few moves in that line in a blindfold game in Monaco, if I remember correctly.

The Löwental Variation plays with that aggressive spirit of bringing the queen out too early.

I stopped playing the Sicilian because of the anti-Sicilians

I felt like I had to memorize too much, and it wasn’t worth it at that time, which is why I never studied this opening.

Although, I would have liked to study the Pelikan, which Magnus played in the World Championship against Caruana, and in my opinion, it is the most powerful line for Black, the one I like the most, at least.

You just have to check the statistics in the Lichess database to see that Qd3 is winning 52% of games with White and losing 41% at high levels where I play (2200-2500).

This is much better than any Open Sicilian or closed , where White has worse win percentages.

You have to be careful with such win percentages. Qd3 may be winning 52% of games, but that means 52% averaged over all possible black replies to Qd3. There may be some specific reply where black is better off, but that won't show up in an average like this.

In fact if you dig down one more level you see that if black replies to Qd3 with e6 then suddenly black's win percentage is higher than white's (with the same caveat noted above). Take it further down and after 6... a6 black is doing even better.

I play the Kan and the Taimanov Sicilians so after white plays Qd3 it feels to me like I am playing a weird hybrid of a Kan and a Taimanov Sicilian but a tempo up, and with white's queen in a less than idea position for white.

What you're saying isn't true take a closer look at the statistics when moves like e6 or a6 are played; they also show that White has better numbers. (level 2200-2500 lichess database)

There's no way to have a proper debate if irrefutable data is denied from the start or if there's an attempt to mislead with incorrect information. Let's be a bit more serious.

What these stats show is that Qxd4 followed by Qd3 is a surprising line because it doesn't appear in the standard Sicilian Defense manuals.

Black won't be prepared for it, and even if they are theoretically prepared, they lack practical experience. In Blitz, practice is very important , in slower games, not so much, because there you can't really be caught off guard.