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Very Hot Topic (More than 25 Replies) Delchev on Reti (Read 139381 times)
Vass
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Re: Delchev on Reti
Reply #125 - 08/30/12 at 08:36:03
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Ludde wrote on 08/29/12 at 21:11:35:
tony37 wrote on 08/29/12 at 20:05:41:
I may be missing something, but why not 9...Qg4 ?

No doubt this was analysed by both parties involved, but without spending too much time on serious thought it seems that white get some kind of lead in development after 10.d3 Qxg2 11.Rf1 (engines top choice btw). If it is really good is a different question.

9...Qg4 10.b5!? e4 11.bxc6 bxc6 12.Nd4 Qxg2 13.Rf1 Bxc5 and now 14.Ba3 or 14.Nxc6 is possible, too.. Maybe good for playing OTB, but not too good for the CC.  Roll Eyes
  
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Ludde
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Re: Delchev on Reti
Reply #124 - 08/29/12 at 21:11:35
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tony37 wrote on 08/29/12 at 20:05:41:
I may be missing something, but why not 9...Qg4 ?

No doubt this was analysed by both parties involved, but without spending too much time on serious thought it seems that white get some kind of lead in development after 10.d3 Qxg2 11.Rf1 (engines top choice btw). If it is really good is a different question.
  
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tony37
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Re: Delchev on Reti
Reply #123 - 08/29/12 at 20:05:41
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I may be missing something, but why not 9...Qg4 ?
  
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Vass
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Re: Delchev on Reti
Reply #122 - 08/29/12 at 08:08:59
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Ludde wrote on 08/29/12 at 07:19:09:
Maybe this alternative way of playing it, as chosen by a strong CC GM, is an option. The inclusion of Qa4+ at least postpones axb4.
http://www.iccf-webchess.com/MakeAMove.aspx?id=293355

It seems like a real medicine for this variation.  Smiley
  
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Ludde
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Re: Delchev on Reti
Reply #121 - 08/29/12 at 07:19:09
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Maybe this alternative way of playing it, as chosen by a strong CC GM, is an option. The inclusion of Qa4+ at least postpones axb4.
http://www.iccf-webchess.com/MakeAMove.aspx?id=293355
  
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Re: Delchev on Reti
Reply #120 - 06/18/12 at 04:58:58
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It all looks very convincing. I have tried to find anything for White, but it seems his best bet is to play for a draw with two rooks and a couple of pawns versus queen and a piece. Not exactly what I would want as White!

I find it strange if Delchev does not even mention 9...g6. If Black is simply winning, or at least clearly better, after 11...Nf6, it means the whole 6.Bb5+ line is busted. And it should not be that hard to see that 9...g6 is at least a critical try (and not just a rook blunder). Makes me suspicious about the whole book.
  
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Re: Delchev on Reti
Reply #119 - 06/17/12 at 03:26:37
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In Thiele's analysis, 7...axb4 8.Nxe5 fxe5 9.Qh5+ g6 10.Qxe5+ Qe7 11.Qxh8 Nf6, White has the interesting idea 12.Kd1, to try to exploit the e-file. It gets quite unclear, at least to me, after 12...Be6 13.Bxe6 Qxe6 14.exd4 Qg4+ 15.Kc2.

No, that fails because of 14...Kf7.
  

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Ludde
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Re: Delchev on Reti
Reply #118 - 06/11/12 at 19:07:39
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Keano wrote on 06/11/12 at 13:59:20:
But after 8...dxe3 White could just play 9.fxe3 and probably Black has to revert to a ...Nh6 defence because taking on e5 will never work now with the long diagonal open. I like 8...fxe5 much more - the idea of trapping the Queen in the corner is quite appealing to us all isn't it?  Be interesting to see if the guy gets a reply to that letter.

Absolutely true, even though it seems rather unattractive for white to play with the N on d3 after fxe3. All of it is rather unimportant since in this line white at least has a draw, but in the line advocated by Thiele black seems to be winning, or close to it. The reason I brought it up was that to me it indicates that Delchev didn't put too much effort in his analysis of these lines. In the Anti-slav stuff on the other hand I'm quite impressed by some of his analysis.
  
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Keano
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Re: Delchev on Reti
Reply #117 - 06/11/12 at 13:59:20
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But after 8...dxe3 White could just play 9.fxe3 and probably Black has to revert to a ...Nh6 defence because taking on e5 will never work now with the long diagonal open. I like 8...fxe5 much more - the idea of trapping the Queen in the corner is quite appealing to us all isn't it?  Be interesting to see if the guy gets a reply to that letter.
  
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Ludde
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Re: Delchev on Reti
Reply #116 - 06/11/12 at 13:41:01
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Kazzy wrote on 06/10/12 at 19:55:26:
It seems like there's some trouble in the following line:
1.Nf3 d5 2.c4 d4 3. b4 f6 4. e3 e5 5. c5 a5 6. Bb5+ c6 7. Bc4

Check out Reinhard Thieles letter on the chess-stars homepage:

http://chess-stars.com/Reti_letter.html

This might be a refutation of the whole line.


Aside from this (which might be an unimportant observation given the result of the analysis by Thiele) black can also play 8..dxe3 when 9.Qh5+ g6 10.Nxg6 hxg6 11.Qxg6+ Kd7 looks like a forced draw. This is one of the first lines the engine produces so it is not really a "find", but rather puts the question to how Delchev checked his analysis. It seems that the parts of the book dealing with the anti-slav (especially the g4-lines) are much more carefully analysed than the rest.
  
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Keano
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Re: Delchev on Reti
Reply #115 - 06/11/12 at 08:26:20
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That does look very convincing doesn't it? Very good find if it holds up.
« Last Edit: 06/11/12 at 12:02:15 by Keano »  
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Re: Delchev on Reti
Reply #114 - 06/10/12 at 19:55:26
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It seems like there's some trouble in the following line:
1.Nf3 d5 2.c4 d4 3. b4 f6 4. e3 e5 5. c5 a5 6. Bb5+ c6 7. Bc4

Check out Reinhard Thieles letter on the chess-stars homepage:

http://chess-stars.com/Reti_letter.html

This might be a refutation of the whole line.
  
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GMTonyKosten
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Re: Delchev on Reti
Reply #113 - 05/30/12 at 09:20:57
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Girkassa wrote on 05/29/12 at 21:16:02:
Looks like a weakness in my old analysis is finally pointed out!

Quite a lot of people seem to play the same way, but I don't like having the black queen on the same file as the white rook, and I also prefer having the white knight on d2 rather than a3 - especially if the knight has to go to c2 afterwards. Delchev gets round this in his book by playing Rc1, c5 and then presumably putting the knight on c4.
There is no point buying the book for this line, though, as he barely covers 8...d4.
  
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Re: Delchev on Reti
Reply #112 - 05/29/12 at 21:16:02
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Looks like a weakness in my old analysis is finally pointed out! I simply missed that White could ignore the threat to his d3-pawn, and for the same reason, I always thought that 17.f4 Bf5 would be troublesome for White's knight.

I have had three rather comfortable wins and one GM draw (a rather lucky one, but I was fine from the opening) in this line, so I haven't put this line very high on my priority list. Now I will have to take a closer look again, as 17./18.f4 looks quite strong. Maybe you just made me buy your book and/or subscribe to the Flank openings section, Tony.  Smiley
  
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GMTonyKosten
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Re: Delchev on Reti
Reply #111 - 05/29/12 at 19:58:51
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Girkassa wrote on 05/29/12 at 17:18:34:
Hmm... looks like I'm lacking the best sources on this line as I don't have Dangerous weapons and I'm not a subscriber to Flank openings  Undecided (please forgive me, Tony!).

No, never!

Girkassa wrote on 05/28/12 at 21:22:29:
after 1.Nf3 d5 2.c4 e6 3.g3 Nf6 4.Bg2 Be7 5.0-0 0-0 6.b3 c5 7.Bb2 Nc6 8.e3 d4 9.exd4 cxd4 10.Re1 Ne8. I see that he recommends 11.Ne5 Nxe5 12.Rxe5 f6 13.Re1 e5 14.Ba3, but this has always occurred to me as completely harmless for Black. After 14...Nc7 15.Bxe7 Qxe7 16.d3 Rb8 17.Nd2 Bf5, it seems to me that Black has an easy game.

Really? Two questions: 1) Why can't White play 17 f4 ? 2) Why can't White play 18 f4, as 18...Bxd3 19 Nf3 looks good?
  
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