Author: Oliver Roese
Date: 14:10:29 03/29/02
Go up one level in this thread
On March 29, 2002 at 15:08:01, Dan Wulff wrote:
>Hi Bob!
>
>On March 29, 2002 at 14:44:38, Robert Hyatt wrote:
>
>>On March 29, 2002 at 14:25:36, Dan Wulff wrote:
>>
>>>Hi People!
>>>
>>>[D]8/1k6/p4p2/2p2P2/p1P2P2/2P5/P1K5/8 w - -
>>>
>>>This is CCE position 765. The correct move is Kc1.
>>>
>>>Gandalf does not have a clue.
>>>
>>>Which program solve this, how fast, and at what search depth ??
>>>
>>>Greetings
>>>
>>>Dan Wulff
>>>(The Gandalf Team)
>>
>>
>>Is this supposed to be winnable? I get +1.0 after 37 plies, for example,
>>and it looks like a draw based on the PV...
>
>Yes, it is. I get a +0.80 score for white almost immediately, then it just keeps
>adding one more aimless king move to the PV for each iteration. I never get to
>ply 37, but after 24 hours on my slow CPU (450 MHz PII) Gandalf reaches
>iteration 32, with no clue.....
>
>I do not have the complete solution, only the first move :-(
>
>Greetings
>
>Dan Wulff
>(The Gandalf Team)
I have the solution. This is analyzed in "Bauernendspiele" (Pawnendings) from
Yuri Awerbach in the chapter about 'Gegenfelder', german edition
(I dont know the english term for 'Gegenfelder', could someone who knows it
post it here, thank you in advance.)
Created with Scid:
[[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[FEN "8/1k6/p4p2/2p2P2/p1P2P2/2P5/P1K5/8 w - - 0 1"]
1. Kc1! Kc7
( 1... Kb8 2. Kb2 Kb7 3. Ka3 Kc6 4. Kxa4 Kb6 5. Ka3 Kc7
( 5... Ka5 6. Kb3 Kb6 7. Kc2 Ka5 8. Kd3 Ka4 9. Ke4 Ka3 10. Kd5 Kxa2 11.
Kxc5 +- )
6. Kb2 Kd7 7. Kc2 Kd8 8. Kd3 Kc7 9. Ke4 Kd6 10. a3 +- )
2. Kd1! Kd7 3. Ke1 Kc7 4. Kf2 Kd8 5. Ke2 Ke8 6. Kd3 Kd7 7. Ke3 Kd6 8. Ke4 a3 9.
Kd3 a5 10. Kc2! a4 11. Kd2! Kc7 12. Kd3 Kc6 13. Ke2 Kd6 14. Kf2 Kd7 15. Ke3 Ke7
16. Kf3 +- *
Someone not familar with "Gegenfeldern" (belonging fields) is
not expected to understand this...
Oliver Roese
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