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Very Hot Topic (More than 25 Replies) C51-C52: Evan's Gambit Refutation? (Read 24786 times)
kylemeister
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Re: Evan's Gambit Refutation?
Reply #15 - 11/15/10 at 16:05:35
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TonyRo wrote on 11/15/10 at 13:52:41:
1700 vs. 1900 games are truth these days?



But he ran it through an engine!

I love how, under such an approach, moves which have long figured prominently in books become just "interesting" and "Fritz prefers" and the like.
  
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TonyRo
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Re: Evan's Gambit Refutation?
Reply #14 - 11/15/10 at 13:52:41
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sloughter wrote on 11/15/10 at 02:38:29:
In the Schenectady Chess Club Championship I won the following Evans Gambit game against a 1900 player so I doubt that 7...Nge7 is all that convincing as a refutation.


1700 vs. 1900 games are truth these days?

  
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Stigma
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Re: Evan's Gambit Refutation?
Reply #13 - 11/15/10 at 12:26:23
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These days it's also possible to play the Scotch with a very small time investement, i.e. by choosing the least theoretical options from Barsky's book.

  

Improvement begins at the edge of your comfort zone. -Jonathan Rowson
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Re: Evan's Gambit Refutation?
Reply #12 - 11/15/10 at 11:49:36
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To thibdb13:

You write "You are certainly right about Bb5 but Bc4 does not require such a heavy investment in learning as Bb5 does."

On the contrary, I would argue that it is far easier to get a viable, healthy position as White in the Ruy Lopez than in say the Evans or the Two Knights with Ng5. That's one reason for its enduring popularity. Far less detailed knowledge is required, and you don't need to play the latest cutting-edge stuff to get into a decent position with chances of an edge. Mostly White just castles early and tries to take the centre with c3 and d4. There are only a few sharp early deviations by Black which require some knowledge to refute or avoid. The only real rival in this respect is the "Slow Italian" with c3 an d3. (Perhaps it is no accident that John Emms has written very good books on both.)
  
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sloughter
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Re: Evan's Gambit Refutation?
Reply #11 - 11/15/10 at 02:38:29
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Anonymous3 wrote on 08/20/10 at 19:38:30:
Does anyone know of a true refutation of the Evan's Gambit (1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 b4!?) that guarantees Black an advantage? I thought the main line, 4...Bxb4 5 c3 Ba5, refuted the Evan's Gambit, but I think White can equalize with 6 d4 exd4 7 0-0 Nge7! 8 Ng5!.


In the Schenectady Chess Club Championship I won the following Evans Gambit game against a 1900 player so I doubt that 7...Nge7 is all that convincing as a refutation.

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 exd4 7.O-O Nge7 8.cxd4 d5 9.exd5 Nxd5 10.Ba3 Be6 11.Bb5!? Bd7? (Fritz prefers 11...Bb4!) 12.Qb3 Nce7 13.Bxd7ch Qxd7 14.Ne5 Qd8 15.Bxe7! Kxe7 (Forced---the a5 Bishop is hanging after Qxe7) 16.Qxb7 Nb4 (The only way to stop a disaster on c6) 17.Qe4 Kf8 18.Nc3! (Taking advantage of the fact that Black no longer controls the diagonal) 18...Bb6 19.Rad1 (defending and attacking) Rc8 20.Rfe1 c6 (desperately trying to get in Rc7) 21.Nxf7! Kxf7 22.Qe6ch Kf8 23.Re3 g6 (or 23...Bxd4 24.Rf3ch Bf6 25.Rxd8ch +- or 23...Nd5 24.Nxd5 +-) 24.Rf3ch Kg7 25.Rf7ch Kh6 26.Qh3ch Kg5 27.Ne4 #
  
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thibdb13
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Re: Evan's Gambit Refutation?
Reply #10 - 08/25/10 at 09:07:51
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[quote author=7F5340595D445B515A320 link=1282333110/7#7 date=1282657501
The first argument against the 3.Bc4 is really based on opporunity cost: 3.Bb5, a significantly better move, is foregone.

The second argument is the Two Knights Defense.  I am sure the Evans would be in more people's repertoires if the Two Knights did not exist.
[/quote]

You are certainly right about Bb5 but Bc4 does not require such a heavy investment in learning as Bb5 does. After years of d4, I wanted to switch to e4 and there were two reasons I chose Bc4:
- I wanted to get familiarized with the basics of e4-e5
- I do not have the time now to study Bb5 a bit seriously.

Concerning the Two Knights Defense, I was also a bit afraid of it but after some experiences on the internet, I must say I find it quite nice to play against it. In particuarly, I like the Fischer/Steinitz variation (9.Nh3): it seems that white will be smashed but white has really a lot of resources. Really fun and interesting to play!
  

Yusupov once said that “The problem with the Dutch Defence is that later in many positions the best move would be ...f5-f7” but he is surely wrong.
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Re: Evan's Gambit Refutation?
Reply #9 - 08/24/10 at 18:49:39
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brabo, I totally agree with everything you said.

16...f5 is recommended by Glenn Flear in "Dangerous Weapons: 1 e4 e5"
  
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Re: Evan's Gambit Refutation?
Reply #8 - 08/24/10 at 17:34:23
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I find it strange that Marin didn't mention my notes published in 2007: http://www.chesspub.com/cgi-bin/yabb2/YaBB.pl?num=1174123573/2#2
They clearly contradict some of his statements in the Evanschapter.

Further I don't agree with his statement in one of the mainlines:
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 exd4 7.0-0 Nge7 8.cxd4 d5 9.exd5 Nxd5 10.Ba3 Be6 11.Qb3 Qd7 12.Ne5 Nxe5 13.Qxb7 Qc8 14.Bxd5 Qxb7 15.Bxb5 Rb8 16.Be4 and now f5 making air for the king looks ok for black contrary to Nc4 what Marin gives.

I also find his comment in the following line very superficial while at my opinion this concerns again an important mainline.
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 exd4 7.Qb3 Qe7 8.0-0 Bb6 9.cxd4 Nxd4 10.Nxd4 Bxd4 11.Nc3 Nf6 12.Nb5 and here Marin stops saying white has a strong initiative. However I think white really has to do his best not to run out of steam and fall in a bad position. 12... d5 13.exd5 Bxa1 14.Ba3 Qe5 15.f4 Bd4+ 16.Kh1 Qe3 17.Nxd4 Qxb3 18.Re1+ Kd8 19.Be7+ Kd7 and i prefer to play with the extra exchange.
  
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Re: Evan's Gambit Refutation?
Reply #7 - 08/24/10 at 13:45:01
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thibdb13 wrote on 08/24/10 at 11:31:40:
Some weeks ago I started to look at the Evans Gambit and up to now, I'd say the following:
- it does not really offer an advantage to white vut you cannot say black stands better after, let's say, the first ten moves
- nevertheless, black has a lot of opportunities to go (badly) wrong
- white has to know the principles and some theory but black must absolutely know what he is doing.

At my level and on the internet, I find it a good weapon but my feeling is that really good players shouldn't have any problem with black.

So my conclusion is: it is an opening where the best one should win and there is no real refutation of the gambit, just some good ways to get out of it.

 


The first argument against the 3.Bc4 is really based on opporunity cost: 3.Bb5, a significantly better move, is foregone.

The second argument is the Two Knights Defense.  I am sure the Evans would be in more people's repertoires if the Two Knights did not exist.


  

The Great Oz has spoken!
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thibdb13
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Re: Evan's Gambit Refutation?
Reply #6 - 08/24/10 at 11:31:40
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Some weeks ago I started to look at the Evans Gambit and up to now, I'd say the following:
- it does not really offer an advantage to white vut you cannot say black stands better after, let's say, the first ten moves
- nevertheless, black has a lot of opportunities to go (badly) wrong
- white has to know the principles and some theory but black must absolutely know what he is doing.

At my level and on the internet, I find it a good weapon but my feeling is that really good players shouldn't have any problem with black.

So my conclusion is: it is an opening where the best one should win and there is no real refutation of the gambit, just some good ways to get out of it.

  

Yusupov once said that “The problem with the Dutch Defence is that later in many positions the best move would be ...f5-f7” but he is surely wrong.
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SWJediknight
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Re: Evan's Gambit Refutation?
Reply #5 - 08/23/10 at 14:02:28
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I saw the free excerpt (online) from the chapter that covered 7.0-0 Nge7 8.Ng5 and there was a misprint: the columns gave an assessment of "-/+" but a quick read through of the analysis and assessments in the notes revealed assessments of "=".  That could be the reason for the confusion, but anyway, "=" is the official line.
  
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Re: Evan's Gambit Refutation?
Reply #4 - 08/20/10 at 22:43:17
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kylemeister wrote on 08/20/10 at 22:14:30:
A claim that 5...Bd6 is a refutation would be interesting, since Andrei Volokitin opined in a Yearbook article last year that it should not even equalize.

Surely the mainstream view is that there is no "true refutation" of the Evans.  For instance, Mihail Marin (writing from a Black standpoint a couple of years ago) thought it should be equal with best play (he considered 5...Ba5 6. d4 ed 7. 0-0 Nge7 8. Ng5 bad for White, however).


Marin didn't consider that line bad for White, he concludes that it leads to equality.
  
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Markovich
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Re: Evan's Gambit Refutation?
Reply #3 - 08/20/10 at 22:30:31
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Anonymous3 wrote on 08/20/10 at 19:38:30:
Does anyone know of a true refutation of the Evan's Gambit (1 e4 e5 2 Nf3 Nc6 3 Bc4 Bc5 4 b4!?) that guarantees Black an advantage? I thought the main line, 4...Bxb4 5 c3 Ba5, refuted the Evan's Gambit, but I think White can equalize with 6 d4 exd4 7 0-0 Nge7! 8 Ng5!.


I used to think that the "Normal Position" was better for Black, but after defending it in some corr games, I've concluded that White has just enough comp.  Black is in no significant danger of losing, however, so I think the Normal would be a good way to go with sufficient preparation.

Frankly I doubt that there is a refutation.
  

The Great Oz has spoken!
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kylemeister
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Re: Evan's Gambit Refutation?
Reply #2 - 08/20/10 at 22:14:30
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A claim that 5...Bd6 is a refutation would be interesting, since Andrei Volokitin opined in a Yearbook article last year that it should not even equalize.

Surely the mainstream view is that there is no "true refutation" of the Evans.  For instance, Mihail Marin (writing from a Black standpoint a couple of years ago) thought it should be equal with best play (he considered 5...Ba5 6. d4 ed 7. 0-0 Nge7 8. Ng5 bad for White, however).
  
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Seth_Xoma
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Re: Evan's Gambit Refutation?
Reply #1 - 08/20/10 at 21:19:56
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I've always found 5...Bd6 a tough nut to crack in my online blitz games.
  
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