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Subject: Re: difficult position for most amateurs

Author: Uri Blass

Date: 15:18:34 11/29/02

Go up one level in this thread


On November 29, 2002 at 18:12:13, Uri Blass wrote:

>On November 29, 2002 at 17:58:22, Will Singleton wrote:
>
>>On November 29, 2002 at 17:30:45, Russell Reagan wrote:
>>
>>>On November 29, 2002 at 17:22:20, Will Singleton wrote:
>>>
>>>>[D]2rr3k/1p4p1/1P2b2p/p1Bnpp1q/8/Q1P2PP1/P6P/RB3RK1 b - - 0 26
>>>>
>>>>Solution times (amd 1.6ghz):
>>>>
>>>>Yace       not in 5 min
>>>>Crafty     not in 5 min
>>>>Aristarch  3:48 min
>>>>Gromit     3:12 min
>>>>Ruffian    44 sec
>>>>CM9000     5 sec
>>>>
>>>>Seems like the strong amateurs are using pruning techniques that cause the
>>>>solution to be missed.  Ruffian and Yace have no problem, perhaps they don't use
>>>>null move in the way others do?
>>>
>>>"Ruffian and Yace have no problem"...your results say Yace doesn't get it in
>>>five minutes.
>>>
>>
>>Sorry, I meant Ruffian and CM9000 have no problem.
>>
>>Will
>
>Latest Movei(PIII850Mhz) see fail high in more than 7 minutes
>It still did not solve the fail high problem at the time of writing these lines
>I guess that it can be translated to less than 5 minutes on amd 1.6Mhz
>
>depth=12 +1.45 d5f4
>Nodes: 58146510 NPS: 134826
>Time: 00:07:11.27
>depth=12 +1.74 d5f4
>Nodes: 77088395 NPS: 133820
>Time: 00:09:36.06
>
>
>Uri

Here is more analysis

depth=12 +2.72 d5f4 g3f4 d8d2 c5f2 h5f3 a3a5 e6d5 a5d5 f3d5 b1f5 c8f8 c3c4 d5c4
Nodes: 133255780 NPS: 132683
Time: 00:16:44.31


Uri



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