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Subject: Re: Mate in 22....Engine test....etc.

Author: Uri Blass

Date: 16:37:56 05/05/04

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On May 04, 2004 at 10:39:12, Tord Romstad wrote:

>On May 04, 2004 at 10:19:39, Rob Basham wrote:
>
>>[D]5n2/B3K3/2p3p1/4k1N1/7P/3bN1P1/2Prn1P1/1q6 w - - 0 1
>>
>>Ruffian 1.0.1 announces mate in 22 in only 12 seconds!
>>
>>P3/850
>>
>>This should be a good test...
>
>Not really.  The only thing you test with this kind of artificial position is
>whether the engine has checks in the qsearch.

No

Movei needs depth 13 to see the mate.

You said that you use more pruning than other engines and less extensions.
It seems to me based on your results that you use more extensions then other
engines.

I have checks in the qsearch but only in the first plies of the qsearch.

Uri



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