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Subject: Re: Forced mate so solve...

Author: Paul

Date: 12:40:21 02/05/01

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On February 05, 2001 at 12:39:23, Christophe Theron wrote:

>On February 05, 2001 at 09:15:52, Paul wrote:
>
>>I've been looking through the archives a bit, and came across this mate that Dr.
>>Dann posted a long time ago, it's not too easy, but not too difficult either for
>>top programs (but mine has a hard time finding it :) ...
>>
>>2r3k1/5ppp/7r/Q7/3P1p2/1N3Pnq/PP3K1P/R5R1 b - -
>
>Well this time Tiger took 98s to find the mate in 10. :(
>
>Ne4+... (K6-2 450, 6Mb hash)
>
>
>    Christophe

Well, don't be disappointed Christophe ... mine took 03:12 for a mate in 11 :)

I've been changing so much in my search the last few days, sometimes it looks
like it's drunk, haha! I just read that Genius 6.5 & CM7000 found a M10 in ~15
seconds on a p2/400, and there also is a mate in 9 (proven by Chest).

Ok, I have 2 questions for you, but if you don't want to answer them I
understand completely, just can't resist. :)

1. Is your QSearch relatively simple like mine, or do you extend/look at
check(evasion)s etc in there like Ed seems to do?

2. I'm going to convert my movegen to 16x12 any day now (like you have if I
remember correctly). One thing I don't like is that some arrays get twice as
big, like the history one and the ones for piece-hash-value-lookups. It's
possible to prevent that by calculation, but do you have any recommendations?

Wish we had palmtrees over here in Amsterdam :)

Groetjes,
Paul



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