Latest Updates:
1  Other / Chess and Computers / Re: New version of LcO
 on: Yesterday at 23:11:50 
IsaVulpes wrote yesterday at 17:10:13:
RTX2060 - 18500 NPS - $320
GTX1660ti - 8500 NPS - $260
+117% performance, for +23% price


The GTX 1660 Ti is incredibly cost inefficient, no matter the application (Leela or games). In Europe, it seems to cost almost as much as the RTX 2060.

The non-Ti version is 40% cheaper. But he was looking for a laptop so the options are always rather different then.

The important thing is to not get a non-Turing card (i.e. GTX 10x0 series), or you'll pay more for ~25% less performance. RTX is nice if you can afford it.

The ChessBase guide for system building is hilarious. Building a system with 2 x RTX 2070 and a 2700X CPU? It will be hot, power hungry and a nightmare to keep quiet. Useful for showing off on playchess or in correspondence, not so useful if you actually study for OTB.

2  Chess Publishing Openings / d-Pawn Specials / Re: New London DVD By GM Williams.
 on: Yesterday at 21:46:49 
The critical sequence here is 1. d4 d5 2. Nc3 Nf6 3. Bf4 a6 4. e3 e6 5. g4 Bb4 6. Nge2 O-O 7. a3 Be7 8. Rge1

Around here, at high depth Stockfish starts to agree that white is perhaps not worse after all and that maybe there are other plans than Nc1 🤭.

3  Chess Publishing Openings / d-Pawn Specials / Re: New London DVD By GM Williams.
 on: Yesterday at 17:10:23 
TopNotch wrote on 11/17/19 at 14:10:09:
Kaufman and Sielecki are really enthusiastic about the following line for Black against the Jobava: 1.d4 d5 2.Nc3 Nf6 3.Bf4 a6!?

Kaufman cites the following game with analysis:

Jobava,Ba (2622) - Sargsyan,Shant (2488) [D00]
PRO League KO Stage 2019 chess.com INT (2), 02.04.2019

1.d4 d5 2.Nc3 Nf6 3.Bf4 a6!? 4.e3 e6

What says Simon Williams about this line?


There's 2 chapters about this line. He gives both 5. g4!? and 5. Bd3.

4  Other / Chess and Computers / Re: New version of LcO
 on: Yesterday at 17:10:13 
IsaVulpes wrote on 11/09/19 at 23:15:56:
General benchmarks are of very little use for a comparison between RTX cards and others for Leela purposes

The RTX cards are boosted with tensor cores, which are an incredible performance boost for all machine learning applications.

RTX 2060 and GTX 1660i are at a similar pricepoint, but the former should bring out vastly more power for Leela (whether anyone needs that, is of course a different question).
RTX 2080 will outperfom any GTX card by miles.


https://en.chessbase.com/post/fat-fritz-what-videocard-to-buy Here is a chessbase article underlining what I said

RTX2060 - 18500 NPS - $320
GTX1660ti - 8500 NPS - $260
+117% performance, for +23% price

If you want to buy a GPU for Leela, get an NVidia RTX card.

5  General / General Chess / Re: Advertisements for other sites/forums
 on: Yesterday at 08:13:18 
fmsteva wrote on 11/17/19 at 22:15:44:
I want to make a tournament. Is this good free program :

swissonlinetournament.com/


Is there the possibility of taking a bye in the tournament? As a local chess club tournament manager (xD) is very very common.

Thx

PD: I am using right now http://chessmanager.com/ that allows you to use byes.

6  Chess Publishing Openings / Anti-Sicilians / Re: Alapin Sicilian e6 vs d6
 on: Yesterday at 08:02:42 
MNb wrote on 11/17/19 at 12:42:25:
1.e4 c5 2.Nf3 e6 3.c3 Nf6 4.e5 Nd5 5.d4 cxd4 5.cxd4 d6 smoothly transposes to the lines I presented. To me they look like a pretty good version for Black of the Alekhine. 


Straggler wrote on 11/17/19 at 16:36:08:
Doesn't Black usually develop the c8 bishop before playing ...e6 in the Alekhine?

Usually yes. This bishop still looks good on c6, b7 or even a6 to exchange it for White's most dangerous light piece. What's more, the Chase Variation 1.e4 Nf6 3.e5 Nd5 3.c4 Nb6 4.c5 Nd5 might transpose.


Stigma wrote yesterday at 07:13:32:
With that in mind, 5...d6 makes more sense than 5...e6.

Thiat very useful principle is why I think the early ...Nc6 inaccurate. Here it doesn't really apply. After 1.e4 c5 2.c3 Nf6 3.e5 Nd5 4.d4 cxd4 5.cxd4 White will play 6.Nf3 anyway.

7  Chess Publishing Openings / Anti-Sicilians / Re: Alapin Sicilian e6 vs d6
 on: Yesterday at 07:13:32 
I'm no Alapin expert, but it makes sense for Black to keep as many good setups as possible on the table for as long as he can, to keep White guessing.

With that in mind, 5...d6 makes more sense than 5...e6. The only setup Black "loses" by playing 5...d6 is the one with an early ...e6 and ...b6, and most books consider that dubious anyway (though don't ask me if that conclusion still holds up).

One big reason Black players still regularly reach the position after 5...e6 is ...e6 was actually played earlier - via the move order 2.Nf3 e6 3.c3 - which as I've just argued limits Black's options. The ones he has left are still supposed to be good enough objectively, of course.

8  Chess Publishing Openings / Anti-Sicilians / Re: Alapin Sicilian e6 vs d6
 on: Yesterday at 04:35:28 
kevinfat wrote on 11/16/19 at 23:55:44:
1.e4 c5 2.c3 Nf6 3.e5 Nd5 4.d4 cxd4 5.cxd4

It seems to me that there are at least three ways to handle this position as black. ... Where would one go to learn about this?

That's a good question. Most books these days are repertoire books, either for white or for black, but your question is more about pluses and minuses for both players. Two repertoire books I have seen that do not answer your question are Gallagher (2003) Beating the Anti-Sicilians and Collins (2004) An Attacking Repertoire for White.

I have some half-memory of an annotated game by Nunn that explains this in depth. Maybe it was in Nunn/Griffiths (1987) Secrets of Grandmaster Play.

9  General / General Chess / Re: Advertisements for other sites/forums
 on: 11/17/19 at 22:15:44 
I want to make a tournament. Is this good free program :

swissonlinetournament.com/

10  Chess Publishing Openings / Open Sicilians / Re: The Killer Sicilian by Tony Rotella
 on: 11/17/19 at 20:06:26 
What does everybody think of Shaw's 7.N5c3? I suspected that I would be able to find some hole in his analysis somewhere, but so far it looks somewhat uncomfortable for Black.

 
  Top