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Very Hot Topic (More than 25 Replies) NEW BDG BOOK (Read 167567 times)
Jupp53
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Re: NEW BDG BOOK
Reply #261 - 08/11/12 at 10:30:44
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@Gambit: I cannot follow your idea in the first line of your last post. There are several mistakes in the notation and 14. Re1! is not possible. Please correct to help me understand your idea.
  

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Re: NEW BDG BOOK
Reply #260 - 08/11/12 at 02:34:54
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Markovich wrote on 08/11/12 at 01:26:54:
Gambit, Bookup is not a computer, nor is it even a chess engine. It's a chess spreadsheet that can plug into certain engines. Please get this right, otherwise you mislead innocents here.


Indeed:

Bookup/ChessOpening Wizard (COW) and Chess Position Trainer (CPT) are chess opening trainers. To help you build, maintain, memorise your repertoire.

Fritz, Stockfish, Houdini, Crafty etc are chess playing engines. For playing chess. For analyzing chess.
  
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Re: NEW BDG BOOK
Reply #259 - 08/11/12 at 01:26:54
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Gambit, Bookup is not a computer, nor is it even a chess engine. It's a chess spreadsheet that can plug into certain engines. Please get this right, otherwise you mislead innocents here.
  

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Re: NEW BDG BOOK
Reply #258 - 08/11/12 at 01:17:47
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*Pointless and rude reply with no chess content removed (NB not Gambit's)*

And thank you Gambit for being more polite with the second post. Keep posts like this, all is good.
  
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Gambit
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Re: NEW BDG BOOK
Reply #257 - 08/10/12 at 22:00:01
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In checking with the computer, I found that Scheerer's analyses of the Kampars Gambit line gives inferior moves for White at critical points. How so? Judge for yourself:

1 d4 d5 2 e4 de4 3 Nc3 Nf6 4 f3 Bf5 5 g4 Nd5  6 g5 Nd5  7 fxe4 Nxc3 8 bxc3 e5 9 Nf3 ed4 10 cd Bb1+   11 Bd2 Bxd2+  12 Qd2 Be4 13 Qe3 Qe7 14 Re1! 
rather than the clearly inferior 14 Kf2?

8...e5 9 Qd3 ed4 10 cxd4 c5 11 d5 Bd6 12 Bg2 00 13 Ne2 Re8 14 00 Qc7 15 Bf4! c4 16 Qd4 Be5 =

Scheerer only gives 15 Ng3? c4 16 Qf3 Nd7 "and White is strategically busted."  The critical improvement is 15 Bf4! found by my computer. For the pawn, White has a strong center, piece activity and pressure.

I believe there are other improvements in Scheerer's book, around move 12 or later, just waiting to be found.
  
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Re: NEW BDG BOOK
Reply #256 - 08/10/12 at 13:38:57
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*Wearing Mod Hat*

@Gambit: fair enough you disagree, but please use more polite language in doing so.
This is your warning. Any more rudeness, posts will be edited or simply deleted.
This is a civilised place folks. Let's keep it friendly.

Gambit wrote on 08/10/12 at 13:03:57:
I was looking at Scheerer's book yet again. He gives lousy analyses of the Kampars Gambit in the Vienna Defense to the BDG. To wit:

1 d4 d5 2 e4 de4 3 Nc3 Nf6 4 f3 Bf5 5 g4 Bg6 6 g5 Nd5 7 fxe4 Nxc3 8 bxc3 g6 9 Nf3 g6 10 Qe2 Bc6 11 Bg2 Bg7 12 00?

This is the kind of lousy analyses that loses games. You can find it in Scheerer, page 127, note "b". However, E.J. Diemer suggests 12 Ba3! in BDG World, Vol. 3, No. 3, May/June 1985.

The computer agrees. After 12 Ba3 Qd7 13 000 00 14 Kb1 Qe6 15 Rhe1 Bd5 16 Ne5 Bg2 (16...Ba2 Kb2 Bd5 18 Be7 Rc8 = ) 17 Qg2 Bxe5 = the position is level.

  
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Gambit
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Re: NEW BDG BOOK
Reply #255 - 08/10/12 at 13:03:57
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I was looking at Scheerer's book yet again. He gives lousy analyses of the Kampars Gambit in the Vienna Defense to the BDG. To wit:

1 d4 d5 2 e4 de4 3 Nc3 Nf6 4 f3 Bf5 5 g4 Bg6 6 g5 Nd5 7 fxe4 Nxc3 8 bxc3 g6 9 Nf3 g6 10 Qe2 Bc6 11 Bg2 Bg7 12 00?

This is the kind of lousy analyses that loses games. You can find it in Scheerer, page 127, note "b". However, E.J. Diemer suggests 12 Ba3! in BDG World, Vol. 3, No. 3, May/June 1985.

The computer agrees. After 12 Ba3 Qd7 13 000 00 14 Kb1 Qe6 15 Rhe1 Bd5 16 Ne5 Bg2 (16...Ba2 Kb2 Bd5 18 Be7 Rc8 = ) 17 Qg2 Bxe5 = the position is level.
  
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Re: NEW BDG BOOK
Reply #254 - 02/22/12 at 01:14:06
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Of course it was. In fact, I analyzed this line on 12 December 2011 with my BOOKUP 2000 computer. Long story short, the computer said Black could draw this on move 23. But as we all know, there is a big difference between a human and a computer!
  
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Re: NEW BDG BOOK
Reply #253 - 02/18/12 at 18:16:41
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12...dxc3 was a moderately obvious mistake, was it not?
  

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Re: NEW BDG BOOK
Reply #252 - 02/18/12 at 16:33:01
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Of late, some people have written that 9...c5 is a so-called refutation of my gambit against the Euwe Defense in the BDG. I have had the pleasant experience of playing against it in correspondence chess on the chess.com website. Time control was 1 move in 3 days. Here is the game.

Zilbermints - Lakisky
chess.com correspondence, 2012
1 move in 3 days time control

1 d4 d5 2 e4 de4 3 Nc3 Nf6 4 f3 ef3 5 Nxf3 e6 6 Bg5 Be7 7 Bd3 Nc6 8 00 Nxd4 9 Kh1 c5
10 Bxf6 gf6 11 Nxd4 cxd4 12 Qh5! dxc3 13 Bb5+ Bd7 14 Rad1 Kf8 15 Rxd7 Qb6 16 Qh6+ Kg8 17 Rf3 Bd6 18 Qxf6, Black resigns
  
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Re: NEW BDG BOOK
Reply #251 - 01/17/12 at 04:58:01
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Maybe Diebert should have tried the Bc4 line?
  
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Re: NEW BDG BOOK
Reply #250 - 01/16/12 at 17:08:33
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SWJediknight wrote on 01/16/12 at 10:35:29:
if I were White here I would probably try out 5.Bc4 b5 (I am yet to face this in a game) 6.Bb3 exf3 7.Nxf3 b4 8.Ng5.

I have looked a bit at this idea and I tend to agree with you.
  

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Re: NEW BDG BOOK
Reply #249 - 01/16/12 at 10:35:29
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After 3...c6 4.f3 e5 Tim McGrew recommended 5.Be3, with the idea 5...Nf6 6.Bc4, though Black might have a small edge after 6...Nbd7.  Black's b8-knight may be blocked after 5.dxe5 Qxd1+ 6.Nxd1 (6.Kxd1 exf3 7.Nxf3 Bg4 may concede an edge to Black) but 6...Nd7 7.f4 is hardly exciting for White.  Overall, White is probably better off with 4.Bc4 as it takes the sting out of 4...e5 and doesn't give Black any additional options.

In the O'Kelly Defence line 5.Be3 exf3 6.Qxf3 Qb6 7.Rb1 Bg4, 8.Qg3 is probably an improvement on Diebert's 8.Qf2, as it prevents 8...Nd5.  However after a continuation such as 8...Nbd7 9.Bd3 e6 10.Nge2 c5 11.0-0 Bd6 12.Qh4 Bxe2 13.Nxe2 0-0, I'm not sure that White has enough for the pawn.  White does have the bishop-pair, but Black is quite active.  It's true that White doesn't appear to stand too badly after 6.Nxf3 e6 7.Qd2 Nbd7 8.Qe2 Bd6 9.0-0-0, but 6...Bf5 is indeed a problem (e.g. 7.Nh4 Bg4 8.Qd2 Nbd7, or 7.Bd3 Bxd3 8.Qxd3 e6 9.0-0-0 Nbd7, and White's e3-bishop would be better off on g5 here).

Stefan Bucker's original reason for rejecting 5.Be3 was 5...Bf5 6.fxe4 Nxe4, as in the Vienna Defence White most often plays Bf4 rather than Be3 (and 6.g4 Bg6 appears to have a similar objection).  I can't see an improvement over this for White.

Having looked over these lines, if I were White here I would probably try out 5.Bc4 b5 (I am yet to face this in a game) 6.Bb3 exf3 7.Nxf3 b4 8.Ng5.
  
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Re: NEW BDG BOOK
Reply #248 - 01/14/12 at 16:55:18
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SWJediknight wrote on 01/14/12 at 11:10:36:
5...exf3 6.Nxf3 e6 also looks good for Black as the bishop normally belongs on g5 in the Euwe Defence.

I happily disagree. In the Euwe Defence Black's counterplay is often based on ...c7-c5. With the pawn on c6 Black will have to lose a tempo, which can be used for Be3-g5. Another plan for Black is the Queenside fianchetto, which works very well if Black is given the time. The pawn on c6 hinders that idea.
4...c6 5.Be3 exf3 6.Nxf3 Bf5 and Black gets the usual Caro-Kann with an extra pawn.
6.Qxf3 might be worth a try if White can find an improvement on



Diebert,C - Ivanov,I (2495) [D00]
USA Masters Chicago (3), 1990

0-1

There is of course also the question if this idea works against the Caro-Kann: 1.d4 d5 2.e4 dxe4 3.Nc3 c6 4.Be3 Nf6 5.f3. Perhaps Black has better than 4...Nf6.
This is important because 6.Bd3 against the Ziegler might be better than 6.Bc4.
This brings me to perhaps my last point of criticism. Scheerer is quite laconic about 1.d4 d5 2.e4 dxe4 3.Nc3 c6 4.f3, writing that "4...e5 is not as strong as before." Perhaps, but I find this hardly more inspiring than the Lemberg.
  

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Re: NEW BDG BOOK
Reply #247 - 01/14/12 at 11:10:36
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Stefan Bucker gives 5...Bf5 6.fxe4 Nxe4 (6.g4 would have the same objection) where the bishop is poorly placed on e3, giving Black an improved Vienna Defence.

5...exf3 6.Nxf3 e6 also looks good for Black as the bishop normally belongs on g5 in the Euwe Defence.  White could consider 6.Qxf3 in this line, but I don't think this particularly helps White: 6...c6 and again the bishop is a bit passive on e3.
  
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