Author: Steffen Jakob
Date: 01:14:41 12/29/01
Go up one level in this thread
Hi Christophe!
On December 28, 2001 at 11:37:37, Christophe Theron wrote:
>On December 28, 2001 at 09:10:27, Steffen Jakob wrote:
>
>>Hi!
>>
>>Today Hossa played a blitz game with Tinker at ICC where a KBPKP endgame was on
>>the board:
>>
>>[D]8/8/p4b1P/3K4/8/8/8/1k6 b
>>
>>Hossa evaluates this as a win for black, because the black pawn has a black
>>promotion square and there is no white pawn on the b file in front of the black
>>pawn. Unfortunately this position is a draw. Can you define a rule for such a
>>position class ("search will do it" doesn't count; at least the big score I gave
>>for this position costed 1/2 point in that game)? I think it should be a
>>combination of this:
>>1. white has an advanced white passer
>>2. the black king isnt able to protect the black pawn
>>3. the distance between the pawns is big
>>
>>Greetings,
>>Steffen.
>
>
>
>I'm sorry, but this is typically a problem that must be solved by search.
>
>If you start trying to write rules for this case and other cases like this one,
>in a few months from now you lose your head.
No knowledge is like wrong knowledge. E.g. here I apply my special code for
KBPKP endgames which is wrong in this case. So I already have written a rule for
this position. And the difference between V_MATE/2 and V_DRAW isnt a cosmetical
issue. I dont think that I will lose my head. Actually fiddling with such
positions is something which I like very much.
Greetings,
Steffen.
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