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Subject: Re: Testposition - Pawn ending

Author: Miguel A. Ballicora

Date: 10:17:11 12/27/01

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On December 27, 2001 at 11:13:40, Sune Larsson wrote:

>
> [D]8/3k2p1/4pp2/1p2PP2/1PpP2P1/8/4K3/8 w - - 0 35
>
> This position is from a game Rocha - Spraggett, 1999.
> White is worse here and there are several ways for him to
> lose this position. Hecht, in his commentaries, even thought
> that the key move is the only way for white to make the draw.
> This ending is tricky, so I'm not 100% sure that Hecht is correct.

I think he is correct. Black threats 1.. fxe5 2. dxe5 exf5 3. gxf5 and now
the plan is simple, Ke7-Kf7 and then g5!
My program Gaviota has not clue in this position (I'd be surprised if it has
any). This is a great position and I will keep it for teaching gaviota how to
play pawn endgames. Thanks!

Miguel


> Anyway, white has a simple and straight forward way to secure the draw.
>
> Theme - pawn ending: One protected passer can hold his own vs two connected.
>
>
> Test: Programs with some of this knowledge should evaluate the position
>       after 1.d5! as 0.00 or close to it.
>
>
>[Event "Boavista Masters"]
>[Site "Porto"]
>[Date "1999.12.31"]
>[Round "5"]
>[White "Rocha, Sergio"]
>[Black "Spraggett, Kevin"]
>[Result "1/2-1/2"]
>[ECO "C02"]
>[WhiteElo "2427"]
>[BlackElo "2521"]
>[Annotator "Hecht"]
>[SetUp "1"]
>[FEN "8/3k2p1/4pp2/1p2PP2/1PpP2P1/8/4K3/8 w - - 0 35"]
>[PlyCount "12"]
>[EventDate "1999.12.27"]
>
>35. d5 $1 exd5 36. e6+ Ke7 37. Ke3 c3 38. Kd3 d4 39. Kc2 g5 40. Kd3 Kd6 1/2-1/2
>
>Sune



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