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Normal Topic How to play for a win with black in QI ? (Read 3575 times)
JudgeDeath
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Re: How to play for a win with black in QI ?
Reply #8 - 06/12/07 at 12:25:10
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I've analysed the pawn sac extensively. Black is OK, although there are lines where White is close to forcing a draw. IMO there's no easy way to prevent White getting drawish positions while remaining sound. But 5...b5 is a good way to mix it against a weaker opponent.
  
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Girkassa
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Re: How to play for a win with black in QI ?
Reply #7 - 06/12/07 at 11:42:29
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That line requires White to play 9.Ne5 though. If I'm playing for a win, I'm more worried about 9.Nbd2, against which I've found nothing but dull and very drawish positions. Of course, the top level guys don't worry about that (unless you need a win with Black in a match), but if I'm playing for a win, I'm ready to play 5...b5!?

I've started to worry about 5.Qc2 though, that pawn sac looks pretty good at the moment.
  
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JudgeDeath
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Re: How to play for a win with black in QI ?
Reply #6 - 06/08/07 at 09:30:34
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Good question. I have three games in my database. In 1994 Chernin played 14...Bd6 and after 15.Bb2 the game was agrred drawn. In 2000 14...Qe8 was played in the Finnish championship, and again White played 15.Bb2 and the game was drawn. Last year Berg tried 14...Nf6 against Attalik, who again played 15.Bb2 and went on to lose. 14...Bd6 seems the most logical to me, and if 15.Qa1 then 15...f4 like in the Shulman game. Against 13.a4 I favour 13..Rc8 and if 14.a5 then b5 as in Bukic-Browne 1979.
  
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Strategy_Rules
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Re: How to play for a win with black in QI ?
Reply #5 - 06/05/07 at 18:49:08
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Quote:
For an interesting line in the QI, you might want to look at http://www.chessgames.com/perl/challenge?gid=1443541


Yes, thats an interesting variation. Some days ago Gelfand (black) beated Kasimdhanov with it in a rapid chess game. The game Shulman vs The World is interesting too. In my view white should not play Bc3-b2, maybe some people play this move without thinking because its theorie Smiley I think white should try 13.Rc1 Rc8 14.Rc2 with the idea Qa1,Nd2-f3-e5/Rfc1/a2-a4-a5. Another good idea for white is 13.a4 intending a4-a5. How would you play with black here ?
  
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JudgeDeath
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Re: How to play for a win with black in QI ?
Reply #4 - 06/05/07 at 16:25:17
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For an interesting line in the QI, you might want to look at http://www.chessgames.com/perl/challenge?gid=1443541
  
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MartinC
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Re: How to play for a win with black in QI ?
Reply #3 - 05/27/07 at 11:09:49
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I suspect the reason that 5 .. b5 isn't so popular amongst the top GM's (a fair few very strong players have played every now and then) is that 5 .. Bb4+ is so reliable. 5 .. Bb7 is another perfectly reasonable line which has suffered similar neglect at a very high level recently.

iirc There has been a recent NIC survey on 5 .. b5 and it seems to be doing all right in several ways. The biggest line might be 6 cb Bxb5 7 Bg2 Bb4+ 8 Bd2 a5 - as the survey says this loses a pawn after 9 BxB ab 10 Qd2 ^ Qe7 Qg5 but hardly anyone plays this. There is a L'Ami - Timman game which went 10 .. Nd5 11 e4 etc before ending in a draw.

The quick Bb4+ is I think designed to make sure black can get a white knight for his bishop (in some of the other lines white may be able to finesse round this.).

Incidentally the lines after Bb4+ really aren't so much dull as over analysed. I'd be more worried about getting winning chances after 5 Qc2 in conjunction with the d5 pawn sacs after c5.
  
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Strategy_Rules
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Re: How to play for a win with black in QI ?
Reply #2 - 05/27/07 at 09:40:21
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Statistics does not mean anything. There might be a reason why this line is unpopular among top GMs.
  
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exigentsky
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Re: How to play for a win with black in QI ?
Reply #1 - 05/26/07 at 20:19:23
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Possibly slightly worse than the main line, but not at all refuted. In fact, it scores 48.5% at the 2400+ level.
  
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How to play for a win with black in QI ?
05/26/07 at 14:58:33
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I think about playing the following line with black:

1.d4 Sf6 2.c4 e6 3.Sf3 b6 4.g3 Ba6 5.b3 b5!?

Is this line bad or refuted ?
  
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