Author: George Sobala
Date: 14:08:56 01/11/04
Go up one level in this thread
On January 11, 2004 at 15:33:09, Bob Durrett wrote:
>
>[Event "Karlsbad"]
>[Site "Karlsbad"]
>[Date "1923.??.??"]
>[Round "?"]
>[White "153 Alekhine, Alexander"]
>[Black "Maroczy, Geza"]
>[Result "1-0"]
>[ECO "D55"]
>[SetUp "1"]
>[FEN "r1b3k1/pp1nq2p/8/3p2p1/3pP3/2QB4/PP1N2PP/5RK1 w - - 0 19"]
>[PlyCount "7"]
>[EventDate "1923.04.??"]
>[Source "ChessBase"]
>
>19. Qc7 $1 {Alekhine: "Immediately paralysing all the opponent's pieces;
>Black's position becomes hopeless"} (19. Qxd4 $2 Qc5) 19... Kg7 20. Rf5 $1 dxe4
>21. Nxe4 Qb4 (21... h6 22. h3 {Gufeld: "to be followed by Kg1-h2 and Ne4-d6"})
>22. Rxg5+ {Black resigned} 1-0
>
>Alekhine's comment after White's 19th move is typical. He was concerned about a
>positional issue and not at all concerned about the sacrificed pawn.
>
>
>[D] r1b3k1/pp1nq2p/8/3p2p1/3pP3/2QB4/PP1N2PP/5RK1 w
>
>Bob D.
If it is of any interest, all the engines I've tried have chosen Qc7 within 1-2
seconds of analysis, often less!
Bob - any good chess engine will pay attention to multiple positional features
when making its evaluation of a position. But ultimately the only "correct
assessment" of a position is how it plays out. No matter how ugly it looks, if
there is a winning line, that is enough.
Features such as pawn structure, "good" v "bad" bishops, doubled pawns etc etc
are only shorthand tricks for guessing the true value of a position without
bothering to calculate things out. Indeed, they are often merely shorthand
tricks for guessing whether, all other things being equal, the ending will be
won or lost.
Along these lines, read Watson's "Secrets of Modern Chess Strategy" next. A
brilliant book. Highly recommended.
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