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Subject: Re: Pawn endgame test position......

Author: Rafael Andrist

Date: 12:51:52 03/29/02

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On March 29, 2002 at 15:41:18, Dieter Buerssner wrote:

>On March 29, 2002 at 15:24:52, Rafael Andrist 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.
>>
>>This position was composed by M.Sinar in 1983. I found it in Averbakhs "Pawn
>>Endings", where it is position #1983.
>>
>>The solution according to Sinar is:
>>1.Kc1! Kc7 2.Kd1! Kd7 3.Ke1 Kc7 4.Kf2 Kd8 5.Ke2 Ke8 6.Kd3 Kd7 7.Ke3 Kd6 8.Ke4
>>(forcing a pawn move) a3 9.Kd3 a5 10.Kc2! a4
>
>After 4.Kf2, Yace shows immediately draw score, and I think it is correct. It is
>even quite nice: black stalemates himself, and I believe, it is unavoidable:
>
> 106595   1.208   0.00 19t  4...a3 5. Ke2 Kb6 6. Kd3 Ka5 7. Ke4 Ka4 8. Kd5
>                            a5 9. Kxc5 {-160}
>
>Regards,
>Dieter

Wilhelm agrees :)
 ply     time   value    nodes N    nodes Q    PV
  10       0s    0.79      10793         63    Kc7-d6 Kf2-e3 Kd6-e7 Ke3-e4
Ke7-d6 Ke4-d3 Kd6-e7 Kd3-e3 Ke7-d6 Ke3-e4
  11       0s    0.00      19858        116    a4-a3 Kf2-e3 Kc7-b6 Ke3-d3 Kb6-a5
Kd3-e4 Ka5-a4 Ke4-d5 a6-a5 Kd5xc5
  12       0s    0.00      39194        116    a4-a3 Kf2-e3 Kc7-b6 Ke3-d3 Kb6-a5
Kd3-e4 Ka5-a4 Ke4-d5 a6-a5 Kd5xc5

Really nice, Sinar probably overlooked this.

regards
Rafael B. Andrist



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