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Subject: Re: Chessmaster Perhaps no longer the Fastest Mate Finder?

Author: Heiner Marxen

Date: 10:54:42 01/07/02

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On January 07, 2002 at 09:38:33, leonid wrote:

>On January 07, 2002 at 05:15:38, Dann Corbit wrote:
>
>>On January 07, 2002 at 05:05:31, Jouni Uski wrote:
>>
>>>On January 07, 2002 at 04:59:54, Dann Corbit wrote:
>>>
>>>>On January 07, 2002 at 04:47:50, Will Bundy wrote:
>>>>>Hi
>>>>>
>>>>> In this position Fritz7a announces mate in 8 in 1 sec!!! I expected chessmaster
>>>>>to find it in the same amount of time, didn't happen.
>>>>>
>>>>>
>>>>> 2R2R2/5p2/p3p2p/4P1pk/7N/P5PP/5P1K/1q6 w - g6 id Fritz 7 - ; bm g3g4;
>>>>
>>>>I don't think you can reasonably draw any sensible conclusions from a single
>>>>position.  Try it on a couple hundred.  If it's faster with a large set of
>>>>positions, then your conclusion is likely to follow.  If not, then not.
>>>
>>>Yes it's very difficult to say anything sure! I have tactical test set with 200
>>>positions and still I cannot say sure, which program is the best in solving:
>>>Fritz, Tiger or Goliath. And "toy" programs like Chessmaster I haven't even
>>>tested.
>>
>>The output of Chest319 for this problem:
>>
>>[D]2R2R2/5p2/p3p2p/4P1pk/7N/P5PP/5P1K/1q6 w - g6 acn 18544563; acs 116; bm Rxf7
>>g4+; ce 32752; dm 8; pv g4+ Kxh4 Rh8 Qg6 Rcg8 Qh5 Rh7 f5 exf6ep e5 Rgh8 e4 Rxh6
>>e3 Rxh5#;
>
>
>One second for this position is for sure nice time. Mine (LLchess mate solver)
>was not able find mate by its selective. By brute force it find mate in 8 moves
>in 3 min and 22 sec. Celeron 600Mhz. No hash.
>
>Leonid.

Hi Leonid,

I'm not sure where you read "one second".  In the above EPD output
"acs 116;" means 116 seconds, i.e. 1 min and 56 seconds.  That's not that far
from your time :-)

Cheers,
Heiner



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