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Very Hot Topic (More than 25 Replies) C58: New try main line Two Knights Defense (Read 21177 times)
sloughter
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Re: C58: New try main line Two Knights Defense
Reply #79 - 07/12/12 at 15:20:48
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Aziridine wrote on 07/12/12 at 06:40:17:
Quote:
8.Qf3 Be7 9.Bd3 O-O 10.O-O g6 11.Qe2! Nd5 12.Nf3 (It is rare that White can play this in this variation illustrating a key improvement for White) Nf4 13.Qxe5 Bd6 14.Qg5 Qxg5 15.Nxg5 Nxd3 16.cxd3 Ba6 17.Nf3 Bxd3 18.Re1 Rfe8 19.Nc3 Rxe1ch 20.Nxe1 Bf5 21.Nd1 Nc4 22.Ne3 Nxe3 23.fxe3 & White has the extra pawn.

14...f6 15.Qh6 Bg4 and Black is better.


8.Qf3 Be7 9.Bd3 O-O 10.O-O g6 11.Qe2 Nd5 12.Nf3 Nf4 13.Qxe5 Bd6 14.Qg5 f6 15.Ne1! Ne2ch 16.Bxe2 Bxe2 17.d3
  
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Re: C58: New try main line Two Knights Defense
Reply #78 - 07/12/12 at 15:08:18
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Vass wrote on 07/12/12 at 07:49:49:
sloughter wrote on 07/12/12 at 04:14:40:
All valid points---White has to improve:

8.Qf3 Be7 9.Bd3 O-O 10.O-O g6 11.Qe2! Nd5 12.Nf3 (It is rare that White can play this in this variation illustrating a key improvement for White) Nf4 13.Qxe5 Bd6 14.Qg5 Qxg5 15.Nxg5 Nxd3 16.cxd3 Ba6 17.Nf3 Bxd3 18.Re1 Rfe8 19.Nc3 Rxe1ch 20.Nxe1 Bf5 21.Nd1 Nc4 22.Ne3 Nxe3 23.fxe3 & White has the extra pawn. 

Something more valuable, at last..
There we go.. 8.Qf3 Be7 9.Bd3 O-O 10.O-O g6 11.Qe2! Nd5 12.Nf3 f6!  Wink


Let me be more specific. White has a universal position with Ne1 and you will note that the Knight on e1 defends the Bishop on d3. You don't even get doubled pawns in this variation or the Bishop pair.
  
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Re: C58: New try main line Two Knights Defense
Reply #77 - 07/12/12 at 15:00:53
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Vass wrote on 07/12/12 at 07:49:49:
sloughter wrote on 07/12/12 at 04:14:40:
All valid points---White has to improve:

8.Qf3 Be7 9.Bd3 O-O 10.O-O g6 11.Qe2! Nd5 12.Nf3 (It is rare that White can play this in this variation illustrating a key improvement for White) Nf4 13.Qxe5 Bd6 14.Qg5 Qxg5 15.Nxg5 Nxd3 16.cxd3 Ba6 17.Nf3 Bxd3 18.Re1 Rfe8 19.Nc3 Rxe1ch 20.Nxe1 Bf5 21.Nd1 Nc4 22.Ne3 Nxe3 23.fxe3 & White has the extra pawn. 

Something more valuable, at last..
There we go.. 8.Qf3 Be7 9.Bd3 O-O 10.O-O g6 11.Qe2! Nd5 12.Nf3 f6!  Wink


13.Ne1
  
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Re: C58: New try main line Two Knights Defense
Reply #76 - 07/12/12 at 07:49:49
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sloughter wrote on 07/12/12 at 04:14:40:
All valid points---White has to improve:

8.Qf3 Be7 9.Bd3 O-O 10.O-O g6 11.Qe2! Nd5 12.Nf3 (It is rare that White can play this in this variation illustrating a key improvement for White) Nf4 13.Qxe5 Bd6 14.Qg5 Qxg5 15.Nxg5 Nxd3 16.cxd3 Ba6 17.Nf3 Bxd3 18.Re1 Rfe8 19.Nc3 Rxe1ch 20.Nxe1 Bf5 21.Nd1 Nc4 22.Ne3 Nxe3 23.fxe3 & White has the extra pawn. 

Something more valuable, at last..
There we go.. 8.Qf3 Be7 9.Bd3 O-O 10.O-O g6 11.Qe2! Nd5 12.Nf3 f6!  Wink
  
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Re: C58: New try main line Two Knights Defense
Reply #75 - 07/12/12 at 06:40:17
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Quote:
8.Qf3 Be7 9.Bd3 O-O 10.O-O g6 11.Qe2! Nd5 12.Nf3 (It is rare that White can play this in this variation illustrating a key improvement for White) Nf4 13.Qxe5 Bd6 14.Qg5 Qxg5 15.Nxg5 Nxd3 16.cxd3 Ba6 17.Nf3 Bxd3 18.Re1 Rfe8 19.Nc3 Rxe1ch 20.Nxe1 Bf5 21.Nd1 Nc4 22.Ne3 Nxe3 23.fxe3 & White has the extra pawn.

14...f6 15.Qh6 Bg4 and Black is better.
  
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Re: C58: New try main line Two Knights Defense
Reply #74 - 07/12/12 at 04:14:40
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Vass wrote on 07/11/12 at 07:04:57:
sloughter wrote on 07/10/12 at 23:47:53:
...Here is a test of the Vass position---h5 costs Black a tempo in sharp position; not surprisingly there is a tactical refutation:

8.Qf3 Be7 9.Bd3 O-O 10.O-O g6 11.Re1 Nd5 12.Nh3 h5 13.Nc3 Bg4 14.Qg3 Nb4 15.b3 Nxd3 16.cxd3 f6 (e5 is really hanging and on either Bd6 or Bf6/Ne4) 17.Bb2 Nb7 18.Ne4 Nd6 19.d4! Nf5 20.Qc3 Nxd4 21.Nf4! exf4 22.Qxd4 & it doesn't matter whether Black captures on d4 or not, White is better.

Well, please don't change the right move order! In the game I posted it was 8.Qf3 Be7 9.Bd3 O-O 10.O-O g6 11.Re1 Nd5 12.Nh3 and now 12...Nb4 (and not 12...h5).
In your post #43 you say 13.Nc3 is better than 13.Rxe5 and give 13...Nxd3 or 13...Rb8 as possible black responses.
I told you once.. And I'll repeat it.. Don't rely on you Fritz 12 engine! It's an engine that is not appropriate for analyses (especially in the opening). It's a good engine for training...yes, but that's all. And it seems to me you rely too much on your Fritz evaluation of this position.
As for your (Fritz's) 13.Nc3.. May I cite Miles? Oh no, I won't.. I'll be more polite.  Roll Eyes
Simply, a human move (and engine approved) 13...f6!
It's plain and simple - black defends the e5-pawn. Let's see now (and put your Fritz 12 aside if you please) - your knight on h3 (any prospects?), your knight on c3 (great prospects - to end on e4 and that's all...waiting to be chased), your rook on e1 (any prospects?), your queen on f3 (waiting for h7-h5 and Bc8-g4 after black defends well his g6-pawn), your bishop on d3 (  Roll Eyes ), your bishop on c1 (it will develop on b2, yes...against the black e5-pawn) and your rook on a1 (pathetic!). And all this for just one pawn. 13.Rxe5 is a hell of a move compared to this...oh no I won't cite Miles - I promised to myself.  Cool



All valid points---White has to improve:

8.Qf3 Be7 9.Bd3 O-O 10.O-O g6 11.Qe2! Nd5 12.Nf3 (It is rare that White can play this in this variation illustrating a key improvement for White) Nf4 13.Qxe5 Bd6 14.Qg5 Qxg5 15.Nxg5 Nxd3 16.cxd3 Ba6 17.Nf3 Bxd3 18.Re1 Rfe8 19.Nc3 Rxe1ch 20.Nxe1 Bf5 21.Nd1 Nc4 22.Ne3 Nxe3 23.fxe3 & White has the extra pawn. 
  
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Re: C58: New try main line Two Knights Defense
Reply #73 - 07/11/12 at 23:34:10
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I thought this comment of Smyslov_Fan's --

[quote]I think your conceptualization of chess may be inhibiting you[/quote]
-- constituted pretty penetrating analysis.
  
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Re: C58: New try main line Two Knights Defense
Reply #72 - 07/11/12 at 22:44:30
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PANFR wrote on 07/11/12 at 20:53:00:
sloughter, most people here have enough tact, so they avoid flogging on a dead horse. So, no analysis. That's it.


When I'm wrong analysis is provided in great detail. When I'm right there is no analysis. 
  
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Re: C58: New try main line Two Knights Defense
Reply #71 - 07/11/12 at 20:53:00
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sloughter, most people here have enough tact, so they avoid flogging on a dead horse. So, no analysis. That's it.
  
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Re: C58: New try main line Two Knights Defense
Reply #70 - 07/11/12 at 19:41:34
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Smyslov_Fan wrote on 07/10/12 at 15:56:03:
sloughter wrote on 07/10/12 at 15:06:52:



...I leave it up to endgame specialists to evaluate it. White has a horrible pawn structure but active piece play with: 12...Nb4 13.Nc3 Nxd3 14.Qxd3 Qxd3 15.cxd3 Bxh3 16.gxh3 (?) What next? Fritz likes White but I don't trust it in endgames.

Here is the maneuvering line. Fritz consistently overrates the initiative rather than material:

13.Nc3 Rb8 14.Re3 f6 15.Rb1 Nxd3 16.Rxd3 Qc7 17.Re3 Nc4 18.Re1 Nd6 19.Kh1! Nf5 20.Ng1 Nd4 21.Qd1 & White keeps the pawn.


White was able to keep two extra pawns in the game Vass quoted, and still lost.

Chess players need to be able to evaluate endgames accurately even more than they need to be able to evaluate openings accurately! By saying that you "leave it up to endgame specialists to evaluate" a line, you are abdicating your responsibility to your own game. If you're not an endgame specialist, you may want to work to become one! It will make you a stronger player and a stronger analyst.


When White is a pawn up with a pristine pawn structure in the 10...h6 variation. White has 1 1/2 pawns worth of compensation due to his superior pawn structure. It leaves Black with few options. 

White can equalize with a busted pawns structure in main line h6 variation after Nxd3. In my 10...h6 variation Black wins the Bishop but gets no play against the weak d-pawns because there are no weak pawns.

When White is up two pawns with a busted pawn structure, he is up at most a 1/2 pawn i.e. opening move advantage. 

I have referred to the internal harmony of chess. While the Vass idea of h5 looks good superficially you will note that the pawn expansion on the Kingside is antithematic. In other words you would much rather get in h6/g5/f5 rather than g6/h5. 

Here the tactical idea of g6/h5 may force the awkward f6 to defend e5. Then g6 is weak (The Queen simply goes to g3 i.e. 8.Qf3 Be7 9.Bd3 O-O 10.O-O g6 11.Re1 Nd5 12.Nh3 h5 13.Nc3 Bg4 14.Qg3).

You will note that Black cannot defend the e-pawn in the chop variation with f6; that is why Fritz tried c5 instead i.e. 8.Qf3 Be7 9.Bd3 O-O 10.O-O g6 11.Re1 Nd5 12.Nf3 Nxd3 13.Qxd3 Qxd3 14.cxd3 Bxh3 15.gxh3 f6? 16.d4! This is one variation where White is clearly better e.g. exd4 17.Rxe7 dxc3 18.dxc3. No strong player would ever play this but would allow dxe5 instead when White is better.

You are either completely winning with h5 i.e. you win something big or you are simply worse. All of White's moves are part of a long-term strategy so losing a tempo with h5 can and does meet with a tactical refutation i.e. White played Nf4 bringing the Knight back into play by tactical means. In the Vass variation Black has weaklings on c6 & a7 to match White's weaknesses. No one seems overly concerned about the fact that Black has a busted pawns structure, too.

  
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Re: C58: New try main line Two Knights Defense
Reply #69 - 07/11/12 at 18:42:35
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Smyslov_Fan wrote on 07/11/12 at 14:55:08:
I think your conceptualization of chess may be inhibiting you. 

Take a look at the game in post #42 and ask yourself the same questions you did of Vass' 13...f6.

You won't be able to explain why white lost based on what you wrote.

But speaking of Karpov's understanding of position: White has almost no squares for his pieces. Black is indeed constricting white. 

I know, none of us is Karpov. But you have quite a few master-class players telling you to look at the position and that your evaluation is fundamentally flawed. Where else can you get so many qualified people telling you what you need to do to improve?


Again no analysis
  
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Re: C58: New try main line Two Knights Defense
Reply #68 - 07/11/12 at 14:55:08
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I think your conceptualization of chess may be inhibiting you. 

Take a look at the game in post #42 and ask yourself the same questions you did of Vass' 13...f6.

You won't be able to explain why white lost based on what you wrote.

But speaking of Karpov's understanding of position: White has almost no squares for his pieces. Black is indeed constricting white. 

I know, none of us is Karpov. But you have quite a few master-class players telling you to look at the position and that your evaluation is fundamentally flawed. Where else can you get so many qualified people telling you what you need to do to improve?
  
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Re: C58: New try main line Two Knights Defense
Reply #67 - 07/11/12 at 14:16:39
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MNb wrote on 07/11/12 at 11:26:11:
sloughter wrote on 07/11/12 at 06:39:57:
trying to get you to understand universal positions exactly as Steinitz and Karpov play them is apparently a hopeless task.

If you are a chess coach and I am your "student", would you show me specific examples of why I am wrong?

First of all you'll have to explain why the position after Vass' 13...f6 is "universal"  and what you mean with it. In the second place I am pretty sure Karpov wouldn't play that position as White. He was one of the strongest sacrificial players ever - Kortsnoj, Timman, Sax 'and Kasparov belong to his victims. In the third place you should consider the position after 13...f6 objectively - Karpov always did.

White is a pawn up.
White has inactive pieces on a1, c1 and h3, while Bishop d3 is vulnerable.
Black can play ...Nxd3 anytime he/she likes. That results in Black having the Pair of Bishops in an open position plus a wrecked pawn structure for White - the pawns on d2 and d3 will be eternal weaknesses.
Black's Knight on a5 is not well placed, but it will take only two moves to redirect it to a better square, eg c5 or d6.
So Black's compensation is fine.

As the master of attack Rudolf Spielmann wrote: if you don't have the confidence to play such positions as Black you'll never get far as an attacking player. He knew a few things about this and his famous work on sacs was rapidly translated in Russian - Spassky studied it.
And all strong players since WW-2 are dangerous attacking players, including Karpov. Once he gambited a pawn against Kasparov (who declined) and won an impressive attacking game. Karpov was Black against the solid English Opening.
Steinitz was also an excellent attacking player in his young years.


Karpov's nickname is the "boa constrictor". He knew better than anyone else the concept of controlled space. If you look at all the great openings in chess one of the best is the King's Indian when Karpov would play d4/c4/Nc3/e4/f3. This is the only opening I am aware of where White plays a universal position in the opening. Not surprisingly when White carves out that much interior space, it poses real problems for Black to equalize. That is why an early c5 by Black is critical hope to equalize.

You will also notice in the King's Indian that Black, to implement a Kingside attack, will often play the maneuver Nf6/Nd7/f5/Nf6 to get his pawns in front of his pieces. That is why I don't understand why more effort hasn't been made to place the King on f2 rather than castle. Since you know that Black is going to try to get a pawn roller on the Kingside, wouldn't it make sense to avoid castling as long as possible to see what Black's intent is, play in the center, or launch a Kingside attack?

I can't recall the game's site but if you check out the game Karpov-Ivanchuk both players played universal chess the entire game. In my book I describe five different kinds of space:

1)Interior space---the space behind your pawn wall inaccessible to intrusion by your opponent's piecs.

2)Exterior space---the squares controlled by your pawn wall ahead of your pawns

3)Controlled space---the squares your pawns inhabit that prohibit access to your interior space

4)Uncontrolled space---overextended pawns

5)Future space---the unstoppable ability of certain pawns to advance and carve out additional interior space.

If you want to know the secret of how GM's often play, you will note that they often start out with White with a Classical or Hypermodern layout, then, gradually they return to a universal position.

A universal position just means you have a pawn wall with only one open or two half open files, no pieces in front of you pawns and no pieces ahead of your pawns. i.e. you have controlled interior space.

If you want to see what a typical universal position looks like, just check out the World Championship between Kasparov and Short where, Kasparov, on the Black side of the Sicilian Defense, on several occasions, played universal structures. I can do no better than point out those games.

The reason the "chop" position is so tricky is that one concept I developed 20 years ago is that while doubled pawns are undesirable to create a passed pawn, they may be perfectly acceptable to stop the advance of an opponent's pawns who is trying to create a passed pawn. Thus a player should ask himself a simple question when allowing your pawns to be doubled is what I intend to do with it? 

A Classic example of relying on this is the game Fischer-Bisguier when Bobby played the Steinitz Defense (In his My 60 Memorable Games). There he encouraged Bisquier to double and isolate his Rook pawn because he knew that the Bishop pair would be useful long term compensation to assist in creating a passed pawn on the Queenside. 

In none of the Vass variations I looked at was Black able to create a passed pawn on the Kingside, the center or Queenside except by allowing the White Rook to penetrate to the seventh. 

It is difficult to believe that Black can create a passed pawn on the Kingside, the Queenside, or the center. Think of it this way---in those position when White is two pawns up, Black has to win the equivalent of at least three pawns to have any winning chances. That is a tall order.


  
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Re: C58: New try main line Two Knights Defense
Reply #66 - 07/11/12 at 11:26:11
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sloughter wrote on 07/11/12 at 06:39:57:
trying to get you to understand universal positions exactly as Steinitz and Karpov play them is apparently a hopeless task.

If you are a chess coach and I am your "student", would you show me specific examples of why I am wrong?

First of all you'll have to explain why the position after Vass' 13...f6 is "universal"  and what you mean with it. In the second place I am pretty sure Karpov wouldn't play that position as White. He was one of the strongest sacrificial players ever - Kortsnoj, Timman, Sax 'and Kasparov belong to his victims. In the third place you should consider the position after 13...f6 objectively - Karpov always did.

White is a pawn up.
White has inactive pieces on a1, c1 and h3, while Bishop d3 is vulnerable.
Black can play ...Nxd3 anytime he/she likes. That results in Black having the Pair of Bishops in an open position plus a wrecked pawn structure for White - the pawns on d2 and d3 will be eternal weaknesses.
Black's Knight on a5 is not well placed, but it will take only two moves to redirect it to a better square, eg c5 or d6.
So Black's compensation is fine.

As the master of attack Rudolf Spielmann wrote: if you don't have the confidence to play such positions as Black you'll never get far as an attacking player. He knew a few things about this and his famous work on sacs was rapidly translated in Russian - Spassky studied it.
And all strong players since WW-2 are dangerous attacking players, including Karpov. Once he gambited a pawn against Kasparov (who declined) and won an impressive attacking game. Karpov was Black against the solid English Opening.
Steinitz was also an excellent attacking player in his young years.
  

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Re: C58: New try main line Two Knights Defense
Reply #65 - 07/11/12 at 07:22:33
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sloughter wrote on 07/11/12 at 06:39:57:
When I present faulty analysis post members are quick to point out the deficiencies in my analysis, yet when I present a sound plan with abundant analysis, I leave it up to post members to decide who to believe. My critics who haven't provided one shred of analysis or my analysis? Show me the analysis but trying to get you to understand universal positions exactly as Steinitz and Karpov play them is apparently a hopeless task.

If you are a chess coach and I am your "student", would you show me specific examples of why I am wrong?

We don't want to fight against you. Feel free to post your analyses! Good or bad, everyone can make his own conclusions. And we don't post our analyses to contradict to yours, because it seems a waste of time. For example, right now I have more than 40 games to analyse in my CC tries. Do you think I'll leave them all just to show you're wrong in your evaluations. And put Steinitz, Morphy and even Karpov aside - the high quality chess significantly advanced since then. The last computer chess monsters overturned some of the human evaluations in our beloved game. They simply proved to us that to be active is somehow...way better than to keep up only with some positional human understanding. Imagine Nimzowitsch and Dr Tarrash against these monsters! Can you?  Shocked
  
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