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Hot Topic (More than 10 Replies) C42: Theoretical status of Cochrane Gambit? (Read 9127 times)
chk
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Re: C42: Theoretical status of Cochrane Gambit?
Reply #13 - 05/13/13 at 09:53:07
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I agree that a piece in such positions looks better than 3 pawns (which stand on their base for the moment). The 'struggle to a draw' part is there for anyone interested in the Cochrane to evaluate and maybe a couple of other lines down the 5. Nc3 or the 5. d4 c5 6. dxc5 lanes.

Of course the Cochrane is not like playing the QG, it is definitely a riskier approach, but the 'refuted' part may be hard to prove..
  

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Markovich
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Re: C42: Theoretical status of Cochrane Gambit?
Reply #12 - 05/11/13 at 12:40:22
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5.d4 c5 6.Bc4+ d5 7.exd5 b5 8.Be2 Bb7 and I maintain my strong preference for Black.  The best White can hope for is to play with three pawns against a piece, while Black will have the much more active pieces.  My opinion.

I suppose White can struggle to a draw, but I wouldn't want to play his game.
  

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Re: C42: Theoretical status of Cochrane Gambit?
Reply #11 - 05/11/13 at 06:02:51
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I remember Watson commenting that this was definitely favorable for Black but unfortunately he didn't show any variations.
  
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chk
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Re: C42: Theoretical status of Cochrane Gambit?
Reply #10 - 04/18/13 at 12:07:01
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Markovich wrote on 04/17/13 at 19:11:14:
5.d4 c5 6.Bc4+ d5 7.exd5 b5 and I would not wish to be White.


7. ... b5!? is interesting indeed, I won't argue on that and I would probably play that move myself as Black.
I am not sure White can defend 8. Bxb5, but 8. Be2 seems ok. I cannot remember if having analysed this though, may have to recheck some older notes.
  

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Markovich
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Re: C42: Theoretical status of Cochrane Gambit?
Reply #9 - 04/17/13 at 19:11:14
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Statistics are indeed statistics, but I would be interested to know the method by which White can establish his alleged draw.

5.d4 c5 6.dxc5 d5 looks hopeless for White, to me anyway.

5.d4 c5 6.Bc4+ d5 7.exd5 b5 and I would not wish to be White.

5.d4 c5 6.Nc3!? looks worthy of investigation, though I suspect that White's comp is not quite enough even then.  6.Nc3 Nc6 7.Bc4+ d5 8.Nxd5 Be6 and here 9.0-0!? is untried in my data base.
  

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chk
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Re: C42: Theoretical status of Cochrane Gambit?
Reply #8 - 04/17/13 at 17:03:49
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Dunno, I thought 7. BxBe6+ was standard here. 7. Qe2 looks a bit slow to me.

Anyway, my point really is that there are no definite merits/demerits in using 5. Nc3 over 5. d4. At least imo 5. Nc3 does not give 'winning chances'.
  

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Re: C42: Theoretical status of Cochrane Gambit?
Reply #7 - 04/17/13 at 15:45:19
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After 5......c5 you play 6. Bc4 and then after 6......Be6 7. Qe2 again.  With the same plan except you might need to gambit the d pawn, but i think black is much better off with Be7 in than c5.
  
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chk
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Re: C42: Theoretical status of Cochrane Gambit?
Reply #6 - 04/17/13 at 15:40:21
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Ok, but Black can still try 5. ... c5 as in Topalov-Kramnik, 1999, or 5. ... Qe8 or 5. ... Be6.

I would have liked them to play ...Be7 every time (irrespective of me starting with 5. d4 or 5. Nc3) but unfortunately Black is not compelled to do so..
  

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Re: Theoretical status of Cochrane Gambit?
Reply #5 - 04/17/13 at 15:03:59
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In my very brief cochrane gambit career, I believe the only winning chances for white are in the 5. Nc3 line.  Moving the d pawn 2 early or the bishop check will give black lines that he has seen before.
Here is a possible line

1. e4 e5 2.  Nf3 Nf6 3.  Ne5 d6 4. Nf7 Kf7 5.  Nc3 Be7 6. Bc4 Be6 7. Qe2. 

your goal is to keep his king in the center for as long as possible while castling and building up your center with f4.  Pretty simple plan, but hard to execute accurately.
  
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Smyslov_Fan
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Re: C42: Theoretical status of Cochrane Gambit?
Reply #4 - 04/17/13 at 15:02:52
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Have you also typed "Cochrane Gambit" into the search engine here? There have been several threads discussing it already.
  
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chk
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Re: Theoretical status of Cochrane Gambit?
Reply #3 - 04/17/13 at 13:52:54
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Well, from what I have seen the gambit is not refuted. Now, statistics are ..statistics

I personally prefer the 6. Bc4+ line (i.e. have not extensively researched 6. dxc5) and it is a balanced game. I suspect this could be possible with 6. dxc5 as well (of course some analysis is needed here, which I have not done).
  

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Re: Theoretical status of Cochrane Gambit?
Reply #2 - 04/17/13 at 12:47:30
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A draw, really?  The line you mention produces a mere 20% score for White in 20 games, played between players rated 2000+, in my data base.  Apparently not many White players know the drawing line.
  

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chk
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Re: Theoretical status of Cochrane Gambit?
Reply #1 - 04/17/13 at 11:39:53
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Theoretical status I think is that it leads to ...a draw.

The most critical line imo (and also according to most sources of theory) is: 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nxf7 KxNf7 5. d4 c5!? and if 6. dxc5 d5!?. The idea is to break White's central pawn phalanx by returning the extra pawn.

It is a nice gambit line that is mostly based on long-term positional themes rather than fast attacks and the like. There are some threads here should you require more information (use the 'search' function).

For a summary on sources you can also check this site: http://kenilworthian.blogspot.co.uk/2011/03/cochrane-gambit.html
  

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C42: Theoretical status of Cochrane Gambit?
04/17/13 at 09:52:13
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What is the theoretical status of the Cochrane Gambit in the Petroff? 1: e4 e5 2: Nf3 Nf6 3: Nxe5 d6 4: Nxf7?

And what is the topical lines right now?
« Last Edit: 04/17/13 at 15:02:10 by Smyslov_Fan »  
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