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Subject: Re: Here's two difficult positions for your program

Author: allan johnson

Date: 18:11:53 09/10/99

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On September 09, 1999 at 02:22:03, Jouni Uski wrote:

>Both claimed virtually impossible for programs (couple of years ago):
>
>1. 8/8/8/1k3p2/p1p1pPp1/PpPpP1Pp/1P1P3P/QNK2NRR w - - white wins
>
>2. 1R6/7K/8/5P2/8/8/3n2kp/8 w - - white draws
>
>I don't know solutions myself yet...
>
>Jouni

Jouni  With problem number 2 I think white draws if it plays 1 Rb6 h1=Q
2 Rh6. In this way it can defend itself and push its pawn towards the 8th
rank.Black is unable to get its knight and king into the action in time
None of my programmes considered Rb6 but when I entered it into CM6000
 and set it on auto play (3min a move) it came up with the following.
1Rb6  h1=Q+
2Rh6  Qb1
3Rg6+ Kf3
4f6   Qb7+
5Kg8  Qb8+
6Kg7  Qb2
7Kg8  Qb6
8Kg7  Qd4
9Kg8  Qd6
10Kg7 Qe5
11Kg8 Qe8+
12Kg7 Ne4
13f7  Qe5+
14Kg8 Qd5
15Kg7 Qd4+
16Kg8 Qc4
17Kg8 and at this point I stopped the game because cm 6000 was acknowledging the
draw.Of course someone may dispute this variation but my guess is that Rb6
is the only way that white can save the game.
Cheers Allan



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