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Subject: Re: Can white win?

Author: Peter Berger

Date: 10:17:43 01/19/04

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On January 18, 2004 at 17:54:04, Ricardo Gibert wrote:

>On January 18, 2004 at 15:21:29, Ricardo Gibert wrote:
>
>>[snip]
>>>
>>>8/8/5pk1/5b2/7K/3R3p/7P/8 w - - 0 1
>>>
>>[snip]
>>
>>I'm 99% sure that this is a draw. Why? If Black gets his B to g2, he can afford
>>to lose the f-pawn provided his K is not confined to the edge. It's a
>>theoretical draw then. Since it is not clear at all that White can even win the
>>f-pawn in the 1st place, a win seems highly doubtful to me.
>
>Dieter asked me to post this, so here is my effort against Yace on ICC:
>
>[Event "?"]
>[Site "?"]
>[Date "2004.01.18"]
>[Round "?"]
>[White "Yace-Author"]
>[Black "Yace-Author"]
>[Result "*"]
>[ICCResult "Game in progress"]
>[Time "15:51:05"]
>[SetUp "1"]
>[FEN "8/8/5pk1/5b2/7K/3R3p/7P/8 w - - 0 1"]
>
>1. Rd1 Be6 2. Re1 Bf5 3. Rg1+ Kf7 4. Kh5 Be4 5. Kg4 Bg2 6. Re1 Kg6 7. Ra1
>f5+ 8. Kf4 Kf6 9. Ra6+ Ke7 10. Kxf5 Kd7 11. Kf4 Ke7 12. Ke5 Kd7
>
>8/3k4/R7/4K3/8/7p/6bP/8 w - -
>
>Now the d5 square is in the way to making progress, so the position is a draw.

Very impressive - chess can look so easy if you know what to do :).

White will have to find an early improvement, not that I am very optimistic
currently. I let Yace run on the final position for some time just to make sure,
so for what it's worth:

1.Td6+ Kc7 2.Tf6 Lh1 3.Tf1 Lg2 4.Kf4
  +-  (1.95)   Tiefe: 63/90   17:20:40  2273294kN

That's definitely a draw score in this case, it had 1.95 since ply 48 and
similar scores before, also your explanation is logical.





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