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Subject: Re: Leonid's very easy position is actually VERY DIFFICULT!

Author: Matthew White

Date: 15:04:35 10/21/03

Go up one level in this thread


On October 21, 2003 at 17:58:03, Matthew White wrote:

>On October 21, 2003 at 14:09:10, Jouni Uski wrote:
>
>>[D] 2r1N2B/PP1RqP1Q/K2nnq1R/Npk3q1/3q1qQr/2qbbQ2/1P1Q3q/1q1B1Q2 w - -
>>
>>It's interesting to test this under Fritz8 GUI with 2,4 GHz PC:
>>
>>Fritz: no solution in 5 minutes (depth still 1 ply!)
>>Yace: no solution in 5 minutes
>>Ruffian: 26 seconds to bxc8R and 10x announcement
>>Shredder: crash after 2 minutes (in shredder704.dll)!
>>
>>Finally the truth = analysis by ChestUCI Ver 2.6:
>>
>>1.Qxc3+ Qxc3 2.bxc8Q+ Nxc8 3.Qc6+ Kb4 4.Qxc3+ Qxc3 5.Bxc3+ Kc5 6.Nb3+ Kc6
>>7.Rxe6+ Qed6 8.Rexd6+ Nxd6 9.a8Q+ Nb7 10.Qxb7#
>>  +-  (#10)   Depth: 10   00:23:02
>>1.bxc8R+ Nxc8 2.Qc6+ Kb4 3.Qcxc3+ Qxc3 4.Qxc3+ Qxc3 5.Bxc3+ Kc5 6.Nb3+ Kc6
>>7.Rxe6+ Qed6 8.Rexd6+ Nxd6 9.a8Q+ Nb7 10.Qxb7#
>>  +-  (#10)   Depth: 10   00:23:02
>>1.bxc8Q+ Nxc8 2.Qc6+ Kb4 3.Qcxc3+ Qxc3 4.Qxc3+ Qxc3 5.Bxc3+ Kc5 6.Nb3+ Kc6
>>7.Rxe6+ Qed6 8.Rexd6+ Nxd6 9.a8Q+ Nb7 10.Qxb7#
>>  +-  (#10)   Depth: 10   00:23:02
>>
>>Jouni
>Maybe the difficulty has to do with the fact that this is a technically illegal
>position. It is impossible to have that many Queens on the board with any pawns
>left.
>
>Just a guess.
>
>Matt

I just realized that I can't count :).

Please disregard the previous post.

Matt



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