The Chess Mind

Author: Dennis Monokroussos.
This is a blog for chess fans by a chess fan who is more than a chess fan - other topics do creep in from time to time, per my interest.
All material here is copyrighted, and may not be reproduced without my prior permission.
The Daily Update: Carlsen wins Aerosvit, Ivanchuk second
As expected, Magnus Carlsen drew his last round game with Sergey Karjakin, putting a close to his most successful tournament yet. Carlsen finished an undefeated 8-3, winning by a point and achieving a 2881 TPR. It looks like the 1969-1975 generation (Anand, Ivanchuk, Kamsky, Kramnik and Topalov) is running out of time, and getting replaced by an upstart born in 1990.

Still, let's not toss them overboard just yet! Indeed, Vassily Ivanchuk continued his run of good form, and after his first-round loss to Carlsen matched him the rest of the way. He defeated Pavel Eljanov in the last round to take clear second (7-4, 2811 TPR); hopefully he will maintain his current high level through the rest of the year.

Other winners today: Volokitin, who avenged an earlier loss on the white side of the Berlin by defeating Alekseev's attempt to use the Wall, and Shirov, who won a lively tactical struggle on the black side of a QGA against the slumping Onischuk.

The Ivanchuk-Eljanov and Onischuk-Shirov games can be replayed here, with my comments.

Final Standings:

1. Carlsen 8 (of 11), 2881 TPR
2. Ivanchuk 7, 2811
3-4. Karjakin (2745), Eljanov (2750) 6
5-7. Volokitin (2714), Jakovenko (2711), Shirov (2709) 5.5
8-10. Alekseev (2675), Svidler (2672), Nisipeanu (2678) 5
11. van Wely 4, 2612
12. Onischuk 3.5, 2583
Posted by Dennis Monokroussos on Thursday June 19, 2008 at 1:44pm
jaideepblue (mail):
Is this Ivanchuk's second return to the #2 slot after a brief stint in the early 90s? I'm sure there must be people who keep track of such things, but is it the longest gap between a return to the top?
6.19.2008 3:33pm
Dennis Monokroussos:
Maybe Carlsen lost too many points with his tournament-ending series of draws, but I was under the impression that he was going to be #2, not Kramnik or Ivanchuk.
6.19.2008 3:56pm
Andrey:
Dennis, you write "Q + 2 connected passers vs. Q is generally an easy win". Actually, according to tablebases, it is generally a draw (with g an h pawns)!
But this concrete position is not a draw and in human play you are right, it is generally an easy win.
6.19.2008 5:07pm
jaideepblue (mail):
Yep, Carlsen will be #2. Ivanchuk will be a point behind.
6.20.2008 4:20pm
Dennis Monokroussos:
Andrey: Very interesting. Is there a source I can consult on this? If that's a tablebase-generated stat based on the number of positions - no matter how unreaslistic - in which the weaker side has a(n obvious) perpetual, then it could be true but of little real significance. If it's true of "normal" positions, i.e. ones where the strong side's pawns are in touch with each other and Black doesn't start with an obvious perpetual, then that would be an extremely interesting fact!
6.21.2008 11:26am
Andrey:
It's true of "normal" positions. I found out about this from Mikhail Krasenkow, who said that the fact that Queen+two connected passers don't win is the most startling discovery for him from tablebases.

Just check 6-man tablebases yourself on several normal positions, for example 8/2q3k1/8/8/6PP/5Q1K/8/8 w - - 0 1
6.21.2008 1:21pm