Winning material imbalances

Technical questions regarding Openings, Middlegames, Endings etc.
soheil_hooshdaran
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Winning material imbalances

Postby soheil_hooshdaran » Fri Jun 24, 2016 5:25 am

Hi.
Is it true that a rook and two pawns outweigh two minor pieces in an endgame?

Roger de Coverly
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Re: @inning material imbalances

Postby Roger de Coverly » Fri Jun 24, 2016 7:49 am

soheil_hooshdaran wrote:Is it true that a rook and two pawns outweigh two minor pieces in an endgame?


Capablanca used to think so, but it has to be a position where the extra pawns can roll forward to victory. Otherwise the coordination of the pieces can make life difficult for the side with the Rook.

Angus French
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Re: @inning material imbalances

Postby Angus French » Fri Jun 24, 2016 1:44 pm

Glenn Flear wrote about rook vs. two minor pieces (among other endings) in his book Practical Endgame Play. There's also a chapter in Mihail Marin's Learn from the Legends ("Tal's Super Rooks vs. Two Minor Pieces"). And there's a dedicated book: Rook vs Two Minor Pieces by Esben Lund.

A search of my database (6.2M games) for rook vs. two minor pieces where the side with the rook has two more pawns gives a 65.9% score for the side with the rook. (17,072 games; 8,919 wins; 4,677 draws; 3,473 losses; 3 no results.)

soheil_hooshdaran
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Re: @inning material imbalances

Postby soheil_hooshdaran » Thu Jun 30, 2016 11:39 am

Angus French wrote:A search of my database (6.2M games) for rook vs. two minor pieces where the side with the rook has two more pawns gives a 65.9% score for the side with the rook. (17,072 games; 8,919 wins; 4,677 draws; 3,473 losses; 3 no results.)


How did you make such a huge DB?

Kevin Thurlow
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Re: @inning material imbalances

Postby Kevin Thurlow » Thu Jun 30, 2016 12:08 pm

http://theweekinchess.com/ helps. Every Tuesday, there are many games available.

Francis Fields
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Re: @inning material imbalances

Postby Francis Fields » Fri Jul 29, 2016 1:51 pm

If you want to study the endgame have a look at this site:

http://thechessworld.com/learn-chess/3-endgame/
I much preferred winning to thinking and I didn't like losing at all. ― Aleksandar Hemon

soheil_hooshdaran
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Joined: Tue Nov 05, 2013 5:24 pm

Re: Winning material imbalances

Postby soheil_hooshdaran » Sun Jul 31, 2016 9:01 am

The authors are not very we4ll-known


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