Author: Sune Larsson
Date: 11:28:34 01/01/06
Go up one level in this thread
On January 01, 2006 at 13:29:53, David Dahlem wrote:
>On January 01, 2006 at 10:31:07, Sune Larsson wrote:
>
>>Thanks David and Peter! This was excellent stuff. I thought there would be some
>>documentation and history surrounding these positions. These evaluations of the
>>Nunn positions are of course important to have in mind when we look at the
>>results from the engines. Much appreciated! :-)
>>
>>/S
>
>Hi Sune
>
>I found a difference in one Nunn position in your suite and in my pgn. In your
>position 2, the white king is on d4 with black to move. My pgn has the white
>king on d3 with white to move. I don't know which one is correct. :-)
...for finding GM Nunn's original comments to the first 9 positions in our
Endgame test suite! I have inserted them in the .pgn and also changed
pos.2 to have the white king on d3 - and with w on the move.
Maybe some people get awfully tired of all those posts with testpositions
for endgames - but the testsuite should be okey now with 20 positions and
comments to all in the .pgn. If you like I can post the final version - with
the .pgn - or is that not needed?
regards
sune
>
>8/1pk3pp/p7/3p1p2/3K4/6P1/PP2PP1P/8 b - - c0 "From John Nunn"; id "Sune Larsson
>endgame 02";
>
>[Event "1/99-60 Budapest"]
>[Site "Budapest"]
>[Date "1952.??.??"]
>[Round "?"]
>[White "NET02: Barcza"]
>[Black "Golombek"]
>[Result "*"]
>[Annotator "John Nunn"]
>[SetUp "1"]
>[FEN "8/1pk3pp/p7/3p1p2/8/3K2P1/PP2PP1P/8 w - - 0 1"]
>[PlyCount "0"]
>[EventDate "1952.??.??"]
>
>{This endgame certainly favours White. Black's pawn structure is inferior
>because of the isolated d-pawn, while White's king is the first to occupy the
>fourth rank. White has the obvious plan of putting his king on d4 followed by
>using zugzwang to penetrate with his king to c5 or e5. This was in fact the plan
>adopted by Barcza in the game, but accurate defence by Golombek enabled him to
>hold the draw. Later (in 1966) Bondarevsky analysed the ending and concluded
>that White could win with a different and far from obvious plan: playing Ke3,
>threatening Kf4 and inducing Black to weaken his kingside pawn structure further
>by playing ...g5. It is hard to say whether this is correct, but at any rate it
>is clear that this position is finely poised between a draw and a win.} *
>
>Regards
>Dave
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