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Subject: Re: Pondered Ng5 for 10 hours

Author: Uri Blass

Date: 00:32:35 09/04/01

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On September 04, 2001 at 03:28:59, Uri Blass wrote:

>On September 04, 2001 at 02:40:13, Michel Langeveld wrote:
>
>>On September 03, 2001 at 08:51:36, Michel Langeveld wrote:
>>
>>>On September 03, 2001 at 08:22:58, Slater Wold wrote:
>>>
>>>>On September 03, 2001 at 06:34:44, Michel Langeveld wrote:
>>>>
>>>>>19-> 4376:05   0.29   1. Nxh6 Bg6 2. Ne1 Rac8 3. h5 Bh7 4.
>>>>>                         Ng4 a4 5. Nf6 a3 6. Nxh7 axb2 7. Rc2
>>>>>                         Kxh7 8. Rxb2 Qa5 9. Bxc6 Rxc6 10. Nc2
>>>>>                         b3 11. Nxd4
>>>>
>>>>
>>>>Michel, how many total nodes were searched?  And that's amazing, 72 hours!
>>>>
>>>>
>>>>Slate
>>>
>>>I let it run instantly (with searchtime=999999 or something like that)
>>>
>>>My Crafty searches on a 733 Mhz about 500.000 nodes/sec.
>>>So the total nodes is about: 500.000 x 3600 x 73 = 129.600.000.000 nodes
>>
>>This is a crafty analysis of the position after the move Ng5.
>>According to the score this move is better than Nf6 and Nxh6.
>>So solved? :-)
>>
>>20   756:50   0.45   1. ... hxg5 2. Bxg5 Rac8 3. Bxc6 Bxg5
>>                     4. Rxc5 Be7 5. Rcc1 Bf5 6. Nh2 Bh3
>>                     7. g4 a4 8. Ra1 Qb3 9. Bxa4 Qd5 10.
>>                        f3 Rc5 11. Re1
>
>No
>one possible problem is that crafty evaluation is not symmetric.
>Another problem is that I suspect that
>you did not analyze the position after Nxh6 or Nf6 to the same depth.
>
>Uri

I forgot that another problem is that
Crafty's evaluations may be wrong.

Uri



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