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Normal Topic Blitz training (Read 4011 times)
bragesjo
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Re: Blitz training
Reply #5 - 10/30/09 at 15:02:19
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I am actually not shure what whites best option is, many lines are interesting. However I suspect that whites positon is easier to play in Leko-Carlsen Nd5 line and in g4 Khazmidinzhanov variation (or what to called the line where hes ahs been playing black a lot).
  
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FrankieJay
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Re: Blitz training
Reply #4 - 10/30/09 at 14:31:27
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[quote author=batmanking link=1256875030/0#2 date=1256877780]Rybka points out (accurately in my opinion) that after 22.Nde2 Black can select the move-order of ...Rxh1 23. Rxh1 Nxe4 24. Nxe4 Rxe4, and then if 25. fxe5 Qe8! the checks are ineffective.=/+ However independent of the engine I would say that the best practical chance to confuse Black in the position after his 21st, is 22.Rxh8 Qxh8 23. Nde2 attacking pd6.

If Black defends by 23...Rc6, 24. fxe5 dxe5 25. Qe3 with ideas like Nd5 in the air, seems quite reasonable.[/quote]

Yes, I found that, too.  25. Qe8 seems to be =+

Brasgejo, thanks for that line.  What do you think is the best line against this variation.  Is it the earlier g4?  Say on move 15?  Or is there something else newer that's being played against this line.
  
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bragesjo
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Re: Blitz training
Reply #3 - 10/30/09 at 09:06:01
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While I dont have any engine at the moment since new computer and unreadable Fritz disc here are some thoughts.

Line 1:I made some similar conclusions. I analysed alternatives to g4 before using Rybka 3 and black has decent play in many lines with a pawn sac to a5.

Line 2: Actually this line is difficult if white plays Khalifmans 21 Rxh8 Qxh8 22 Nde2 etc. Whites play is very deep and it takes a while for computers to discover how dangeorus the positon is. However, black has 20 .. Rxh1 21 Rxh1 Kf7 where Khalifmans recommendation is rather unconvincing.
  
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ACSian
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Re: Blitz training
Reply #2 - 10/30/09 at 04:43:00
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Rybka points out (accurately in my opinion) that after 22.Nde2 Black can select the move-order of ...Rxh1 23. Rxh1 Nxe4 24. Nxe4 Rxe4, and then if 25. fxe5 Qe8! the checks are ineffective.=/+ However independent of the engine I would say that the best practical chance to confuse Black in the position after his 21st, is 22.Rxh8 Qxh8 23. Nde2 attacking pd6.

If Black defends by 23...Rc6, 24. fxe5 dxe5 25. Qe3 with ideas like Nd5 in the air, seems quite reasonable.
  
Daniel Fernandez, Singapore (FIDE 2230 Sep.)
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FrankieJay
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Re: Blitz training
Reply #1 - 10/30/09 at 04:14:45
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LINE TWO

After failing to prove any advantage in the above line I switched lines, playing 18. g4 (Of course 15. g4 is somewhat in vogue, see Radjabov-Carlsen, Baku 2008).  This line hasn't been as popular of late and I think I now know why.  I have some new analysis, though, to support its non-existence since Negi-Papin, Istanbul 2005 (Note: In the Negi game, this move was played on move 17, without the in-between Bg5 and Rc5, though the position is of course the same).

Anyway, the line played out 18... hxg4 19. h5 Rh8 20. hg6 fg6 21. f4 and here my friend played Dearing's recommendation 21... e5!?


Position after 21... e5!?


Indeed, this line requires white to play very carefully, lest black get a winning endgame!  The first time he played it I tested it head-on.  However, this came to disaster.  After. 22. fe5 de5 23. Ne6+ Bxe6 24. Qxe8 Rxe8 25. Rxe8 Nxe4 26. Nxe4 Rxe4 black is clearly better.  Those pawns become very strong and the rooks are rather uncoordinated.

The only testing line I have found is 22. Nde2!  There are still so many intriguing variations here.  I'm wondering if there is any analysis on this position, or if I can get some help from those of you with more time and a stronger engine!
  
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FrankieJay
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Blitz training
10/30/09 at 03:57:10
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A friend and I have been debating the Dragon over weekly blitz games.  Each week we have been preparing improvements and then going at it over the board.  Here is where we are in some of the crucial variations.

LINE ONE

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Bc4 O-O 9. Qd2 Bd7 10. Bb3 Ne5 11. h4 Rc8 12. O-O-O h5 13. Bg5 Rc5 14. Kb1 Re8 15.Bh6 Nc4 16. Bxc4 Rxc4 17. Bxg7 Kxg7 18. Nd5 e5 19. Nxf6 Qxf6 20. Nb3 Be6 21.Qxd6 Rec8 22. c3 

[center][img]http://www.france-echecs.com/diagramme/imgboard.php?fen= 2r5/pp3pk1/3Qbqp1/4p2p/2r1P2P/1NP2P2/PP4P1/1K1R3R b - - 0 22 [/img][/center]
[CENTER][b]Position after 22. c3 [/b][/CENTER]

This position has been seen before (Leko-Carlsen, Hungary 2008).  In the game, Leko played 22... b5 and the game ended in a draw.  However, when we played this line I came prepared with 22... b5 23. Rhe1 b4 24. Na5! R4c5 cb4 with some advantage (24... Rd4!? 25. Rxd4 exd4 26. Qxd4 and white is up a pawn).  Of course, my friend came up with the novelty 22... R4c6!?  After this I could prove no advantage.  I can post much analysis on this position, but I think black has equalized, for example 23. Qd2 Qe7 24. g4 hg4 25. Qg2 gf3 26. Qf3 Qf6 ends up petering out into an even endgame.
  
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