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Subject: Re: THE 16 PLY CHALLENGE!

Author: Enrique Irazoqui

Date: 12:00:47 09/14/00

Go up one level in this thread


On September 14, 2000 at 14:46:17, Dann Corbit wrote:

>On September 14, 2000 at 14:36:41, Christophe Theron wrote:
>
>>On September 14, 2000 at 14:33:49, Dann Corbit wrote:
>>
>>>On September 14, 2000 at 14:30:07, Dan Ellwein wrote:
>>>[SNIP]
>>>>I guess it would be impractical to run this test with opening book disabled...
>>>>
>>>>(startin' with the very first move have the computer think on its own)...
>>>>
>>>>but i wonder what the data would look like if you did...
>>>>
>>>>it may be that there would not be a cut-off at iteration 19...
>>>
>>>My guess is that in the first ten moves no program on earth can get to ply 19
>>>unless it does a ludicrous amount of speculative pruning.  Even 16 plies would
>>>be formidable.
>>
>>
>>We are close.
>
>Are we really?
>
>Let this run on the very fastest machine available to you:
>[D]r4r2/q1pb1pkp/1p1p2p1/2nPpP1P/2P1P3/p1N2P2/PP1Q4/2KR1BR1 w - -
>
>Please let me know when it gets to ply 16
>;-)

No need. 12 plies is plenty. :)

Enrique

New position
r4r2/q1pb1pkp/1p1p2p1/2nPpP1P/2P1P3/p1N2P2/PP1Q4/2KR1BR1 w - - 0 1

Analysis by Fritz 6:

1.b4 Nb3+ 2.axb3 a2 3.h6+ Kg8 4.Qxa2 Qxa2 5.Nxa2 Rxa2
  ±  (0.94)   Depth: 4/16   00:00:00  6kN
  ±  (0.84)   Depth: 9/31   00:00:01  759kN
1.f6+! Kg8 2.Qh6 axb2+ 3.Kd2
  ±  (0.88)   Depth: 9/32   00:00:02  1370kN
  +-  (#19)   Depth: 12/35   00:01:18  43600kN

(Irazoqui, Cadaqués 14.09.2000)



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