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Subject: Re: A little testposition :-)

Author: Ricardo Gibert

Date: 06:44:52 02/04/01

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On February 04, 2001 at 04:39:35, Uri Blass wrote:

>On February 03, 2001 at 20:03:33, Eduard Nemeth wrote:
>
>>It is a simple testposition ( my new composition :), but i think it is for
>>chess-programs hard! :)
>>
>>[D]qrk5/1p2Kp2/pBp1pPb1/P1P1P3/8/8/8/8 b - - 0 1
>>
>>Black win!
>>
>>Eduard
>
>I guess that programs can win it with black.
>
>They will not find Qa7 as the first move but later the 50 move rule or
>repetitions will force them to see Qa7.
>
>Uri

An astute point. I "tested" this by forcing Fritz4 to play 1...Qa7 2.Bxa7 in
order to see if it would play 2...Ra8?, but it finds 2...b5 almost immediately.

At first I thought the positions original intent could be salvaged by adding a
Black pawn on d5 and a White Pawn on e3. With this change, computers will
probably prefer the move d4 to Qa7 to avoid the 50-move rule draw, but the idea
1...d4 2.exd4 Qa7 3.Ke8 Qxb6 4.cxb6 fails to 4...c5 5.exc5 Be4 6.Ke7 Bc6 and
Black still wins.



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