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Subject: Re: New Tough Endgame Test Suite

Author: Paulo Soares

Date: 01:37:15 06/02/00

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On June 01, 2000 at 17:01:13, José de Jesús García Ruvalcaba wrote:

>On June 01, 2000 at 13:01:25, Vincent Lejeune wrote:
>
>>On June 01, 2000 at 11:48:37, José de Jesús García Ruvalcaba wrote:
>>
>>>On June 01, 2000 at 05:30:31, Vincent Lejeune wrote:
>>>
>>>>On May 31, 2000 at 13:41:45, Dann Corbit wrote:
>>>>
>>>>>CAP records (some of them do not appear to have faired well):
>>>>...
>>>>>6k1/8/2P5/p6p/5bP1/7P/2B2K2/8 w - - acd 20; acn 1174673323; acs 3601; ce
>>>>>153; pv gxh5 Kg7 Kf3 Bh2 Kg4 Kh6 Bd1 Bc7 Kf5 Bb6 Ke6 Bc7 Kd7 Bf4 Kd8 Be5;
>>>>
>>>>I really doubt that gxh5 is the best move because the h's pawn have the wrong
>>>>square colour to promote, if the black bishop stay on the h2-b8 diagonal with
>>>>can make no progress.
>>>>1.g5 seems to be stronger
>>>
>>>	g5 loses a pawn outright. I agree that gxh5 is a poor move. I think Kf3 is
>>>better.
>>>José.
>>
>>If 1..Bxg5?, 2.c7! wins a queen ...
>
>	You are right! This happens to me frequently when I do not set up real board
>and pieces to analyze.
>	After 1. g5 black must play h4 (otherwise white plays h4, then Bd1 tying
>black's king to defent the h5 pawn, and then the white king supports the c-pawn
>and wins). 1. Kf3 attacks the bishop, so white can play g5 the next move.
>	Interesting position, and one in which a little knowledge for opposite-coloured
>bishop endings is extremely helpful (in this case: when trying to win make both
>bishops "good", and when trying to draw make both bishops "bad").
>José.

Strange, I made a long analyse from this position and it seemed
that 1. g5 and 1. Kg3 are winner moves.

[D] 6k1/8/2P5/p6p/5bP1/7P/2B2K2/8 w - -

Paulo Soares, from Brazil




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