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Subject: Re: Testposition - 3 pawns vs bishop and 2 pawns

Author: Sune Larsson

Date: 08:28:51 03/04/01

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On March 04, 2001 at 10:50:54, Enrique Irazoqui wrote:

>On March 04, 2001 at 10:28:01, Sune Larsson wrote:
>
>>
>>  [D]8/5pb1/7p/6PK/7P/Pk6/8/8 w - - 0 1
>>
>>  Ellison, 1972
>>
>>  No story around this one, except to show how tricky endgames with
>>  very few pieces can be. One mistake and you're dead...
>>  Here white is fighting for the draw. After 1.gxh6 he will find the
>>  way, to the remaining black pawn, very long...
>>
>>  Test: White to move and draw. It might be interesting to check if your
>>        program can make it in a) blitz (5-10 min) b) rapidgame (30-60 min)
>>        c) tournamentlevel (40/2). The solution is further down.
>>
>>  Sune
>
>Deep Shredder picks g6 in a fraction of a second. Deep Fritz in 11 seconds,
>Gandalf 4.32h in 56, while Junior 7 beta and the Tigers don't see it in less
>than 5 minutes.

 Hi Enrique, why, in your opinion, do the top programs differ that much
 in this position? Is it possible to trace down some lack of knowledge?
 For the Tigers I guess it can have something to do with missing TB:s,
 but Junior 7 beta??

 Sune

>
>Enrique
>
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>>Ellison, 1972
>>
>>1.g6 f6 [1...f5 2.a4] 2.Kg4 Kxa3 3.h5 [3.Kf5? h5 4.Ke6 Bh8 5.Kf5 Kb4 6.g7 Bxg7
>>7.Kg6 Bh8 8.Kxh5 Kc5 9.Kg6 Kd6 10.h5 Ke6 11.Kh7 f5] 3...Kb4 4.Kf5 Kc5 5.Ke6 Bh8
>>6.Kf7 f5 7.g7 Bxg7 8.Kxg7 f4 9.Kxh6 ½-½



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