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Subject: Re: Deep Blue versus Deep Thought - a missing position

Author: Andreas Stabel

Date: 02:12:01 08/31/01

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On August 30, 2001 at 10:38:40, Ed Schröder wrote:

>On August 30, 2001 at 07:45:34, Kim Roper Jensen wrote:
>
>>Hi
>>
>>If my memory(heavily fragmented) serves me well there was some games, where the
>>DB played against DT, and in one of them DB "announced" mate in 18, a very
>>complicated position where the mate consisted of quiet moves and some
>>counterchecks.
>>
>>Are there anyone that have this position ?? Or is my memory corrupted  ??? :)
>>
>>With regards
>
>
>[d]3r1r1k/1b4pp/ppn1p3/4Pp1R/Pn5P/3P4/4QP2/1qB1NKR1 w - - id MATE (16)
>
>I think you mean this one.
>
>Ed
>
>-------------------------------------
>
>00:00:04 12.00  0.00   1.Rxh7+ Kxh7 2.Qh5 Kg8 3.Rxg7 Kxg7
>                       4.Bh6 Kh8 5.Bg5 Kg7 6.Qh6 Kg8 7.Qg6
>                       Kh8 8.Qh6 Kg8 9.Qg6 Kh8 10.Qh6  (3)
>
>00:00:09 13.00  17.26  1.Rxh7+ Kxh7 2.Qh5 Kg8 3.Rxg7 Kxg7
>                       4.Bh6 Kh8 5.Bg5 Kg8 6.Qg6 Kh8 7.Qh5
>                       Kg8 8.Qg6 Kh8  (9)
>
>00:00:10 14.00  17.26  1.Rxh7+ Kxh7 2.Qh5 Kg8 3.Rxg7 Kxg7
>                       4.Bh6 Kh8 5.Bg5 Kg8 6.Qg6 Kh8 7.Bf6
>                       Rxf6 8.exf6 Qxe1 9.Kxe1 Nc2 10.Kf1
>                       Ne3 11.fxe3 Rd7 12.Qe8 Kh7  (10)
>
>00:00:12 15.00  Mate in 16 moves   1.Rxh7+ Kxh7 2.Qh5 Kg8 3.Rxg7 Kxg7
>                       4.Bh6 Kh8 5.Bg5 Kg8 6.Qg6 Kh8 7.Bf6
>                       Rxf6 8.exf6 Qxe1 9.Kxe1 Nc2 10.Kf1
>                       Ne3 11.fxe3 Rd7 12.Qe8 Kh7  (12)

I don't think this is a mate in 16. In stead of moving 5... Kg8, black can
postpone the mate for two more moves by moving 5... Kg7 forcing white to
move 6. Qh6+ Kf7 and then 7. Qf6+ Kg8 before white can achieve, the same
postion as after above 6. Qg6+, with the move 8. Qg6+

Best regards
Andreas Stabel



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