Computer Chess Club Archives




Subject: Re: Forced mate so solve...

Author: Christophe Theron

Date: 15:02:01 02/05/01

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On February 05, 2001 at 14:05:28, Uri Blass wrote:

>On February 05, 2001 at 13:45:13, Hermano Ecuadoriano wrote:
>>On February 05, 2001 at 08:07:35, Christophe Theron wrote:
>>>On February 05, 2001 at 07:23:58, leonid wrote:
>>>>If you like to solve forced mate position full of "depleted uranium"...
>>>>[D]NKBN4/QRQ3rR/2Qb2r1/N1b1nb2/B2nbbbB/1RNqqqq1/8/2N2k2 b - -
>>>>Please, indicate your result.
>>>Chess Tiger 14 (experimental version) finds:
>>>* a mate in 11 in 6.21s (Bxa7+...)
>>>* a mate in 9 in 15.27s (still Bxa7+...)
>>>on a K6-2 450 with 6Mb hash tables.
>>It is hard to resist posting that Tiger 13 found mate in 8.
>No it did not.
>It is known that tiger13 does not tell the correct number of moves and
>substracts 1.

It is known that Tiger tells the correct number of mate to move from the
position on the board. And once the program has played its move, the announced
number matches the board position. That's the reason why Tiger substracts one


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