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Subject: Re: THE 16 PLY CHALLENGE! {the second position -- both lead to mate}

Author: Ricardo Gibert

Date: 13:52:38 09/14/00

Go up one level in this thread


On September 14, 2000 at 14:56:09, Dann Corbit wrote:

>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
>>;-)
>
>[D]r1bq1r2/ppp2pkp/3p2nn/2bN2NQ/2B1P3/8/PPp3PP/R1B2R1K w - -

There is an easy win with 1.Nf6. Of course 1.Qxh6+ mates by force, but I think
that is irrelevant. I'm always satisfied by an easy win (unless there is an easy
mate that costs me little additional effort).

If you think programs should feature a mate finder mode for problemists, that's
fine, but in a regular chess game, that is not really practical. I do not view
1.Nf6 as a failure to solve the position. A human opponent would probably resign
on the spot against 1.Nf6, so who cares?



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