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Main
Date: 30 Dec 2005 00:42:06
From: Antonio Torrecillas
Subject: More about material unbalance
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Hello,
Last round ch-RUs superfinal produced this game:
Khalifman,A (2653) - Rublevsky,S (2652) [B46]
ch-RUS Superfinal Moscow RUS (9), 28.12.2005
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.Be3 Nf6 7.f4 Bb4 8.Bd3
Qb6 9.0-0 Bc5 10.Na4 Bxd4 11.Nxb6 Bxe3+ 12.Kh1 Bxb6 13.e5 Nd5 14.Qe1 1/2-1/2
I allways thought 3 pieces to be superior to queen in most part of
positions (with coordinated pieces and secure king).
In that position white has some attacking chances. Tournament situation
was: Black dominating the tournament with an entire point of advantage
and white with poor results.
I would expect a draw from a position even or better for black (to
assure the tournament black can be satisfied with draw) but is this the
case? ...
Some opinions:
My previus knowledge says black is better.
Fritz 8 think white to be better (+0.40 aprox).
AT
Ps: That kind of premature draw are very bad for chess!!
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Date: 06 Jan 2006 02:53:42
From: Antonio Torrecillas
Subject: Re: More about material unbalance
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En/na Antonio Torrecillas ha escrit:
> Hello,
>
> Last round ch-RUs superfinal produced this game:
Hum, ... "last round" ONLY the day I posted that!!!
;-)
> Khalifman,A (2653) - Rublevsky,S (2652) [B46]
> ch-RUS Superfinal Moscow RUS (9), 28.12.2005
> 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.Be3 Nf6 7.f4 Bb4 8.Bd3
> Qb6 9.0-0 Bc5 10.Na4 Bxd4 11.Nxb6 Bxe3+ 12.Kh1 Bxb6 13.e5 Nd5 14.Qe1
> 1/2-1/2
There have been some posts lately about computer evaluations and
computer suggestions.
I would like to add that a friend suggested me 14...f5 15.Qh4!?
After that, white is menacing 16.Qh5 g6 17.Qh6 weakening black position.
"Natural human" moves are 15... 0-0 and 15... Bc5 (to defend black
squares with the bishop via e7 or f8) but my Fritz 8 suggested 15...d6
as one of the best moves.
In that case computer suggestion was 15...d6 16.ed6 0-0 but a human
would need to check in first place if 15... d6 16.Qh5 g6 17.Qh6 de5
18.Qg7 Rf8 19.Qh7 works or not. If white can not open the position
before black king is safe, that move can be playable but only when that
has been checked. In that case a human would help the computer to check
the critical lines from human point of view.
AT
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Date: 06 Jan 2006 18:39:02
From: =?ISO-8859-1?Q?Claus-J=FCrgen_Heigl?=
Subject: Re: More about material unbalance
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Antonio Torrecillas wrote:
> I would like to add that a friend suggested me 14...f5 15.Qh4!?
> After that, white is menacing 16.Qh5 g6 17.Qh6 weakening black position.
Hello Antonio,
when I was writing my last article I looked into this also. I examined
14...f5 15. Qh4 Ne3 16. Rf3 Ng4 17. h3 Bd8 18. Qe1 Nh6 plan g5, perhaps
prepared with Nf7 first. I thought White can't do much with Qh4.
Now that I look at it again I think 18. Qg3 in this line is more
critical. This forces Black to loosen his position on the kingside
uncomfortably. Black can (and has to) maintain his knight at g4 with
18...h5 but the pressure on the g file is annoying. After 19. Rff1 h4
20. Qe1 Nh6 21. Be2 g5 is dangerous because of 22. Bh5+ Nf7 23. Bxf7+
Kxf7 24. fxg5 Bc7 25. Rf4 Bxe5 26. Rxh4. After 21...Nf7 22. Bf3 g5 23.
Bxc6 dxc6 24. Rd1 the development of the queenside is a difficult issue.
Black can't avoid the trade entirely but it might be more favorable
after 22...Ne7 (plan g5 and Ng6) 23. Rd1 g5 24. Qd2 (threat Bxb7) Rb8
25. Qe2 gxf4 26. Bh5 Nc6.
> "Natural human" moves are 15... 0-0 and 15... Bc5 (to defend black
> squares with the bishop via e7 or f8) but my Fritz 8 suggested 15...d6
> as one of the best moves.
I like 15...Bc5 as it also prepares the fianchetto of the other bishop
if White tries something funny like g4. With 15...0-0 one always has to
consider if that is castling "into it" like 16. Rf3 followed by Rh3 and
perhaps g4.
> In that case computer suggestion was 15...d6 16.ed6 0-0 but a human
> would need to check in first place if 15... d6 16.Qh5 g6 17.Qh6 de5
> 18.Qg7 Rf8 19.Qh7 works or not. If white can not open the position
> before black king is safe, that move can be playable but only when that
> has been checked. In that case a human would help the computer to check
> the critical lines from human point of view.
My Shredder also ranks 15...d6 very high on his list (first or second,
depending on thinking time). I didn't like it because opening files
against development advantage always looks suspicious to me and I wanted
to keep the central pawns. I didn't look deeper into it as I was
intrigued with the idea of busting the center with g5.
Claus-Juergen
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Date: 01 Jan 2006 08:16:42
From:
Subject: Re: More about material unbalance
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First of all, .... thaks CJ for your useful, instructive and deep
comments!
A correction, despite 9th round is last round in many cases, ... in
that case there were 11 rounds. But Rublevsky made 3 draws to assure
first place.
Your lines are very instructive (showing interesting attacking ideas)
and I agree that in 15.c4 line black seems to be better (despite having
undevelped pieces like Bc8 and Ra8) and 15.exf6 also seem better for
black.
I also agree that position to be "a lot sharper than it looks". Chess
is so rich that I would not be surprised if many new ideas appear for
that line in the following years.
Only an add: in my database there is a single game with 8...Qb6 and it
followed by 9.a3. That proves that both white and black should have
studied that position in home. Being Khalifman one of best chess
theoricians in the world I ask myself what He found to play this as
white.
AT
Ps: My news server "news.aioe.org" does not work well and seldom I
must use google groups to read and post. Anyone knows any good free
news server?
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Date: 31 Dec 2005 16:48:26
From: =?ISO-8859-1?Q?Claus-J=FCrgen_Heigl?=
Subject: Re: More about material unbalance
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Antonio Torrecillas wrote:
> Khalifman,A (2653) - Rublevsky,S (2652) [B46]
> ch-RUS Superfinal Moscow RUS (9), 28.12.2005
> 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.Be3 Nf6 7.f4 Bb4 8.Bd3
> Qb6 9.0-0 Bc5 10.Na4 Bxd4 11.Nxb6 Bxe3+ 12.Kh1 Bxb6 13.e5 Nd5 14.Qe1
> 1/2-1/2
> Tournament situation
> was: Black dominating the tournament with an entire point of advantage
> and white with poor results.
It looks like the game was the typical final round draw to secure the
first place in the tournament.
> I would expect a draw from a position even or better for black (to
> assure the tournament black can be satisfied with draw) but is this the
> case? ...
White's strong points are the better development and potential pressure
on the d file. Black will need some time to develop the queenside.
Still I'm not quite sure if it is White who has the attacking chances or
Black. A plan for Black is f5, Nd5-e3-g4, g5 and the white center
crumples. If White attacks the knight with h3, Black might even play h5
and sacrifice the knight for the h file.
Example:
14...f5 15. c4? Ne3 16. Rf3 Ng4 17. h3 h5!? (more safe is 17...Nh6 with
the plan Nf7 and g5) 18. b4 g5 19. c5 Bc7 20. Kg1 Nh6 (20...gxf4? 21.
hxg4 hxg4 22. Rxf4 is pushing it too far) 21. fxg5 22. Nf7 -/+ As the
white center breaks apart Black should have the advantage.
As White has a hard time to keep his center anyway, he should take the f
pawn. 15. exf6 Nxf6. This releases the pressure on the d file so Black
will develop his queenside with not much problems. The black kingside is
well defended as long as the Nf6 maintains its position. The only way to
dislodge this knight is the advance of the g-pawn but then White will
get problems on the a8-h1 and a7-g1 diagonals. For example 16. Qh4 0-0
17. c3 (else Black plays Nb4 and pushs off the bishop from the diagonal
c2-h7) 17...d6 (controls e5 and keeps the diagonal c6-h1 open) 18. g4?!
(after 18. Rf3 Bd7 19. Rh3 h6 the attack is pretty much stuck) 18...Bd7
19. g5? (better is 19. h3, Black plays 19...Nd8 with the plan to use e4
to block the diagonal like 20. Rae1 Bc6+ 21. Kh2 d5 =/+ or -/+)
19...Ne5! 20. h3 Nxd3 21. gxf6 Rxf6 and White is in a bad shape.
I think the position after the 14th move is a lot sharper than it looks,
so a draw may be not likely. Even if Rublevsky thought he was better he
obviously didn't like to take the risks and Khalifman probably was glad
with the half point.
Claus-Juergen
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