Main Line Two Knights' Defense 8.Qf3 Rb8

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Avatar of sloughterchess

White can just settle into an endgame with an extra pawn so your comments about reinventing the wheel is that Deep Fritz 14


doesn't choose the lines you mention because they LOSE.

Avatar of Hadron
sloughterchess wrote:

It's hard for me to understand why practical results by relatively weak players should be given such high regard; you overlook the obvious---


13.Ba3 & Black can't castle! Black is left with a position where he is a pawn down and his position looks like Swiss cheese!

Relatively weak players? At the time the two games mentioned where played Micheil Van Wissen was 2313, Spike Ernst 2555, John Van der Wiel 2493 and Spike Ernst again was 2521. So, it is interesting that players between 2313 and 2555 are considered relatively weak. My question would be relative to what? Maybe Lev Alburt? His rating as of January 2014 was 2539. So I guess he is relatively weak as well? Maybe relative to...you?  According to the USCF website a one Richard Moody Jr goes out at 1697....

Avatar of sloughterchess
Hadron wrote:
sloughterchess wrote:

It's hard for me to understand why practical results by relatively weak players should be given such high regard; you overlook the obvious---


13.Ba3 & Black can't castle! Black is left with a position where he is a pawn down and his position looks like Swiss cheese!

Relatively weak players? At the time the two games mentioned where played Micheil Van Wissen was 2313, Spike Ernst 2555, John Van der Wiel 2493 and Spike Ernst again was 2521. So, it is interesting that players between 2313 and 2555 are considered relatively weak. My question would be relative to what? Maybe Lev Alburt? His rating as of January 2014 was 2539. So I guess he is relatively weak as well? Maybe relative to...you?  According to the USCF website a one Richard Moody Jr goes out at 1697....


Relatively weak means that I consider games against Deep Fritz 14 played at 120'40  60'20  30 to be superior to games played by low level GM's. What you fail to empasize is how poorly these humans played. How could van Wissen miss the simple 13.Ba3 denying Black the ability of Black to castle? This gives White an obvious and large advantage when Black's "aggression" is completely misguided.

How could White miss the implications of 13...Nf4 14.O-O Qxd3 15.Qxd3 Nxd3 16.cxd3 when there is absolutely no need to play the Queen sac because castles just gives White an endgame a pawn up or a middlegame a pawn up where Black has no counterplay. Why go for murky complications when O-O is just winning easily?

The flashy Queen sac is a poor choice when White can play simply (and win!) with the obvious O-O more or less forcing Black to continue with Qxd3.

As I've said ad nauseum my playing strength goes from rank amateur to a level where I can play these engines dead level in complex middlegames.

Avatar of Scottrf

"As I've said ad nauseum my playing strength goes from rank amateur to a level where I can play these engines dead level in complex middlegames."

Pretty standard if you're sometimes using engines, sometimes not.

Avatar of sloughterchess
Scottrf wrote:

"As I've said ad nauseum my playing strength goes from rank amateur to a level where I can play these engines dead level in complex middlegames."

Pretty standard if you're sometimes using engines, sometimes not.

I was criticized for not using a data base; when I see junk like h4 when White is simply winning with Ba3 or when the author doesn't mention the obvious O-O preferring instead to analyze, instead, the faulty Queen sac, then as I say, I'd rather play against the engines at tournament level to see what "ideas" they develop rather than what much weaker players play.

When Deep Fritz can find a resource like g4 over the board that completely changes the complexion of the entire opening, by, at last, coming up with a way to slow Black's pawn roller on the Kingside, that is huge. This changes the entire tenor of the game from one where Black has adequate compensation for the pawn to one where White can castle Queenside with realistic chances of a Kingside attack.

This is an entirely new strategy that raises serious doubts about 8...Rb8 as an equalizing resource.

Avatar of sloughterchess

Here is a winning strategy against 8.Qf3 Rb8; I've always felt that White has to win the endgame when Black's pawn minus and compromised pawn structure should be decisive. Here Houdini 3 Pro cleverly eliminates the pawn island, prevents White from castling Queenside (Black can never play f5 because then White just castles Queenside), but can't get around the weakness of the isolated pawn.

Watch how Houdini targets the isolated b-


pawn and forces a transition to a winning Rook and pawn ending.

Avatar of aggressivesociopath

You remain over optimistic in all lines.

(1) Not only can Black castle after 11...g5 12. Bb2 Bg7 13. Ba3 Nb4 14. Bxb4 Rxb4, he did so in your example. Did you notice that White never actually completed his devolepment and f5 can be played at the end of your line?

(2) 14...Qxd3 is not forced. Nor do I understand why you want Black to trade pieces off. 

Avatar of sloughterchess
aggressivesociopath wrote:

You remain over optimistic in all lines.

(1) Not only can Black castle after 11...g5 12. Bb2 Bg7 13. Ba3 Nb4 14. Bxb4 Rxb4, he did so in your example. Did you notice that White never actually completed his devolepment and f5 can be played at the end of your line?

(2) 14...Qxd3 is not forced. Nor do I understand why you want Black to trade pieces off. 

1)I should have said that White can prevent Black from castling immediately. Yes, Black can castle but only at the cost of being a pawn down with no counterplay. In case you didn't notice White has an extra defender of the e4 square, hits h7, and has a rock solid King position.

Here is the math: Extra pawn + better pawn structure + no Black counter play = winning position for White.

 

2)In both the 8.Qf3 and 8.Bd3 lines, Black's best hope for equality is to double White's d-pawn. Here Black succeeds in his thematic strategy only to be forced into the indirect exchange of pawns after Rc1/Rc5! forcing the Knight to give up defense of the c-pawn, after which White just invades to the seventh with a clearly won position.

Stay in a middlegame with no compensation for either the pawn or the compromised pawn structure and Black is busted.