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Subject: Re: If you like to solve a mate...

Author: Paul

Date: 08:41:18 02/03/01

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On February 03, 2001 at 10:38:26, leonid wrote:

>On February 03, 2001 at 09:10:01, Paul wrote:
>
>>Mine says a Mate in 11 :)
>>
>>00:21 BM11 08 1... Bxg5+ 2. Rxg5 Bxg5+ 3. Rxg5 Bxg5+ 4. Bhxg5 Bxg5+ 5. Bxg5
>>Bxg5+ 6. Rxg5 Ng4+ 7. Rxg4 Qf4+ 8. Nhxf4 Qxf4+ 9. Nxf4 Nxf4+ 10. Qg6 Rh5+ 11.
>>Qxh5 Rxh5#
>
>It is likely that in 11 moves it is the quickest solution that my program can
>find through selective search. It find in 10 moves as well but it take much
>longer time. The most probable that solution is even in much lower level.
>Shortest mate I don't know for this moment.

So your selective search also finds a Mate in 10 if you let it 'think' longer?
Do I understand that correctly?

Sometimes mine also does that, but not here. The funny thing was that Pretz
announced a Mate in 12 after 21 seconds, but when it played the line out from
hash after ~50 seconds it found a better move somewhere along the way and
finished in 11 moves :) So there is something strange going on in my hashtable;
but I'm afraid that if I remove the bug, it won't find the mates this fast
anymore, ha! ;)

So I admit that in the line above I cheated a little, coz it originally said
BM12, I changed that by hand to BM11 (Black Mates in 11) ... yes, I'm ashamed :)

ciao!,
:Paul




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