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Very Hot Topic (More than 25 Replies) New Tarrasch Defense Book by Kotronias (Read 27933 times)
FreeRepublic
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Re: New Tarrasch Defense Book by Kotronias
Reply #59 - 10/14/22 at 19:49:57
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kylemeister wrote on 10/14/22 at 18:40:05:
a forthcoming Chessable course by Jorden van Foreest will advocate "classical lines" (no Dubov) versus g3, but via 5...Nf6 (no 5...Nc6 6. dc, but allowing the Bg5 pin).


That does sound interesting as 5...Nc6 6.dxc!? is a serious option. 5...Nf6 allows 6.Bg5, which is all I know. Thanks for letting us know.
  
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Re: New Tarrasch Defense Book by Kotronias
Reply #58 - 10/14/22 at 18:40:05
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By the way, according to something I saw, a forthcoming Chessable course by Jorden van Foreest will advocate "classical lines" (no Dubov) versus g3, but via 5...Nf6 (no 5...Nc6 6. dc, but allowing the Bg5 pin).

I think it's too bad that Markovich (Mark Morss) is no longer around to see all this renewed interest in the Tarrasch.
  
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FreeRepublic
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Re: New Tarrasch Defense Book by Kotronias
Reply #57 - 10/14/22 at 17:49:59
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FreeRepublic wrote on 10/08/22 at 18:05:50:
With the exception of the Dubov variation, this seems like the definitive work on the Tarrasch.


Kotronias appears to have put a lot of independent analytical effort into this book. I found one line where his work is complemented by prior work from Aagaard and Ntirlis.

After 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O O-O 9. Bg5 c4 10. Ne5 Be6 11. Nc6 bc6 12. b3, Kotronias continues with 12...Qa5, whereas Aagaard and Ntirlis continue with 12...h6.

Part of the appeal of the QGD Tarrasch variation is the possibility that it can be played as a universal system against many lines and move orders. This has been claimed, but some are skeptical and I have not developed my own opinion.

The repertoire that I have been pursuing is:
QGD Tartakover, QGD Exchange variation, Catalan, Ragozin/Vienna.

I think it provides good chances for Black. However, I can see the appeal of just learning the Tarrasch QGD instead, even if Black may end up with an endgame that is objectively worse but adequate. Examples are a 4 vs 3 (pawns on kingside) rook endings or two bishops vs bishop and knight.
« Last Edit: 10/14/22 at 19:37:51 by FreeRepublic »  
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FreeRepublic
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Re: New Tarrasch Defense Book by Kotronias
Reply #56 - 10/14/22 at 14:48:32
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FreeRepublic wrote on 10/08/22 at 18:05:50:
With the exception of the Dubov variation, this seems like the definitive work on the Tarrasch.


The Dubov variation is covered by GM Erwin L'ami at Chessable for only $12.99. Reviews have been favorable but a frequent comment is that he focus's on the Dubov only, not providing a complete repetoire. So this might be  a good match.
  
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FreeRepublic
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Re: New Tarrasch Defense Book by Kotronias
Reply #55 - 10/10/22 at 17:43:04
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FreeRepublic wrote on 10/10/22 at 13:22:19:
1. d4 d5 2. c4 e6 3. Nf3 c5 4. cxd5 exd5 5. Nc3 Nc6 6. g3 Nf6 7. Bg2 c4 An early ...c4 was mentioned at ChessPublishing.
8. O-O Be7 9. Ne5


In addition to 9.Ne5, White has 9.b3. It has been played a few times but as far as I know it goes unmentioned by theory. After 9. b3 cxb3 10. Qxb3 0-0, White has several reasonable moves:  11.Bg5, 11.Bf4, 11.Ba3 and 11.Rd1. Black will often play ...Na5 to drive the queen away and possibly go to c4.
  
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Re: New Tarrasch Defense Book by Kotronias
Reply #54 - 10/10/22 at 13:22:19
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1. d4 d5 2. c4 e6 3. Nf3 c5 4. cxd5 exd5 5. Nc3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O O-O 9. dc5 Bc5 10. Na4 Be7 11. Be3. This important position has been addressed by many authors. I'd have to do more research before being confident in this line.

1. d4 d5 2. c4 e6 3. Nf3 c5 4. cxd5 exd5 5. Nc3 Nc6 6. g3 Nf6 7. Bg2 cd4 8. Nd4 Bc5. This is the Dubov variation that seems to be doing well enough for Black.

1. d4 d5 2. c4 e6 3. Nf3 c5 4. cxd5 exd5 5. Nc3 Nc6 6. g3 Nf6 7. Bg2 c4 An early ...c4 was mentioned at ChessPublishing.
8. O-O Be7 9. Ne5 O-O. "Now the question is whether White has better than transposing to the main line with 10.Bg5. It turns out he does."
10. b3 cb3 11. ab3 Nb4!? "This is also a bit better for White, but Black's position is very solid here."
It seems to me that Black has several eleventh moves that he can consider.

1. d4 d5 2. c4 e6 3. Nf3 c5 4. cxd5 exd5 5. Nc3 Nc6 6. dc5 d4 7. Na4 Bc5 8. Nc5 Qa5ch has been addressed by several authors. I think it is as dangerous as the main line with 6.g3.
« Last Edit: 10/10/22 at 14:51:07 by FreeRepublic »  
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Re: New Tarrasch Defense Book by Kotronias
Reply #53 - 10/08/22 at 18:05:50
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I went ahead and bought this book. With the exception of the Dubov variation, this seems like the definitive work on the Tarrasch. Kotronias is exceptionally thorough. He was bothered by one variation and worked on it for ten days until he found a satisfactory answer. Sometimes he evaluates a position and chooses a logical move despite initial engine evaluations. The engine eventually comes around and validates his work.

Kotronias compares the Tarrasch to the King's Indian Defense, on which he is a well-known author. He thinks the KID requires more only-moves.

I find the comparison interesting because the KID is known as a hyper-modern opening. The Tarrasch, with it's strong emphasis on space and development (at the expense of pawn structure), is so classical that it could be called hyper-classical. Kasparov played both lines.

I think the unifying link is aggression. Initially the KID looks calm, but Black often aims to attack the White king. The Tarrasch  takes an aggressive stance in the opening. However, the character of the middle-game is then determined by both players.
  
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Re: New Tarrasch Defense Book by Kotronias
Reply #52 - 10/08/22 at 00:20:00
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RoleyPoley wrote on 10/07/22 at 21:06:55:
I thought there was a problem with the Dubov variation now?


I went to Chessgames.com and counted results for 2022. White won three, eight drawn, Black won four. White side-stepped with 7.a3 resulting in two draws.
  
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Re: New Tarrasch Defense Book by Kotronias
Reply #51 - 10/07/22 at 21:06:55
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FreeRepublic wrote on 10/07/22 at 15:45:35:
GM Renato Quintillano presents the Dubov variation, 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cd5 ed5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 cd4!? 8. Nd4 Bc5!? as a rebirth of the Tarrasch. I sometimes discount an author's optimism a little. However current trends suggests he may be right.


I thought there was a problem with the Dubov variation now?
  

"As Mikhail Tal would say ' Let's have a bit of hooliganism! '"

Victor Bologan.
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Re: New Tarrasch Defense Book by Kotronias
Reply #50 - 10/07/22 at 15:45:35
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This is available as an electronic book at ForwardChess.com

I reviewed all the comments on this thread. There were many excellent comments. I don't think the Tarrasch is Black's best answer in the Queen's Gambit. Both main lines and side lines can prove dangerous. That said, in practice the line can be interesting and challenging for both players. A real game of chess can ensue.

This book looks to be very good. I am surprised to see the amount of attention given to lines where White plays Nf3 before playing Nc3. I was under the impression that the only way to play the Tarrasch as Black was after the moves 1.d4 d5 2.c4 e6 3.Nc3 c5. If Kotronias is right, then the Tarrasch becomes a more complete solution for Black.

My impression is that with best play Black ends up a little worse in the ending. This could be a 4 vs 3 rook ending, two bishops vs. knight and bishop, or something else.

AOC suggested that with the Tarrasch isolated queen pawn, Black was gambiting half a pawn. I've gone through some theory at ChessPublishing, etc. Sometimes Black has to hold endings where is about half a pawn down (SF .4 or so).

GM Renato Quintillano presents the Dubov variation, 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cd5 ed5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 cd4!? 8. Nd4 Bc5!? as a rebirth of the Tarrasch. I sometimes discount an author's optimism a little. However current trends suggests he may be right.

Personally, I still find the old lines to be interesting as well. Nor should side lines be ignored. 6. dxc5!? has received theoretical attention. I recently played my first Tarrasch in decades in a speed game. After 1. d4 d5 2. c4 e6 3. Nc3 c5!? 4. Nf3 Nc6 5. dc5 d4 both players were on their own. Not only that, but I'm not sure that theory is conclusive in this line.

Ultimately, I think many of us are swayed by results. Victory will whitewash a multitude of theoretical blemishes. I can certainly recommend playing the Tarrasch in a few speed games to see if it's right for you. I intend to buy Kotronias' book as well.
« Last Edit: 10/07/22 at 20:24:17 by FreeRepublic »  
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Re: New Tarrasch Defense Book by Kotronias
Reply #49 - 10/04/20 at 11:39:28
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Is he dealing with the 4.dxc5 Line?
  
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Re: New Tarrasch Defense Book by Kotronias
Reply #48 - 09/30/20 at 15:37:52
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Tauromachie wrote on 12/31/19 at 14:45:05:
Maybe I will write a more detailed kind of “review“ (strong word as I am just an amateur) when I got more time on my hands.. but for now I would strongly argue
that this should be the new reference book for every Tarrasch player for the next time to come


Thanks and please do write a review.  The amateur reviews are often more informative than the GM ones — especially for other amateurs.
  
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Re: New Tarrasch Defense Book by Kotronias
Reply #47 - 09/30/20 at 12:59:26
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He improves upon the Aagaard treatment of the line and gives a sharp alternative, claiming both equalize.

At high level, black won't be playing for a win in this position, but I don't see anything worrying in the statistics.
  
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Re: New Tarrasch Defense Book by Kotronias
Reply #46 - 01/18/20 at 23:48:21
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Looks like a very thorough work by GM Kotronias, however White has excellent results after 1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.dxc5. I see this in the table of contents is addressed by variation M4b6 in part IIIa, however I don't own the book.

Would love to hear anything on how Kotronias handles the above line. White scores exceptionally well in my database, both at the Grandmaster level but also at the amateur level.
  
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Tauromachie
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Re: New Tarrasch Defense Book by Kotronias
Reply #45 - 12/31/19 at 14:45:05
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Maybe I will write a more detailed kind of “review“ (strong word as I am just an amateur) when I got more time on my hands.. but for now I would strongly argue
that this should be the new reference book for every Tarrasch player for the next time to come
  
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