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Subject: Re: Endgame test position

Author: Robert Hyatt

Date: 17:16:27 02/20/05

Go up one level in this thread


On February 20, 2005 at 12:02:12, John Merlino wrote:

>On February 20, 2005 at 11:02:00, Robert Hyatt wrote:
>
>>On February 20, 2005 at 04:05:33, Martin Baumung wrote:
>>
>>>Hi,
>>>
>>>even though the following position is a study, I think that it is not that
>>>far-fetched. So why not have a look at it with some engines - and enjoy what you
>>>see :-)
>>>
>>>White wins!
>>>
>>>[D]7k/5K2/5P1p/3p4/6P1/3p4/8/8 w - - 0 1
>>>
>>>Engines have a very hard time finding the winning move.
>>>
>>>Cheers,
>>>
>>>Martin
>>
>>
>>This isn't a hard one:
>>
>>               12     1.45  Mat15   1. g5 hxg5 2. Ke7 d2 3. f7 d1=Q 4.
>>                                    f8=Q+ <EGTB> (s=3)
>>               12->   1.93  Mat15   1. g5 hxg5 2. Ke7 d2 3. f7 d1=Q 4.
>>                                    f8=Q+ <EGTB> (s=5)
>>               13     1.97  Mat15   1. g5 hxg5 2. Ke7 d2 3. f7 d1=Q 4.
>>                                    f8=Q+ <EGTB> (s=4)
>>               13->   2.72  Mat15   1. g5 hxg5 2. Ke7 d2 3. f7 d1=Q 4.
>>                                    f8=Q+ <EGTB> (s=5)
>>               14     2.96  Mat15   1. g5 hxg5 2. Ke7 d2 3. f7 d1=Q 4.
>>                                    f8=Q+ <EGTB> (s=4)
>>               14->   4.81  Mat15   1. g5 hxg5 2. Ke7 d2 3. f7 d1=Q 4.
>>                                    f8=Q+ <EGTB> (s=5)
>>               15     4.93  Mat15   1. g5 hxg5 2. Ke7 d2 3. f7 d1=Q 4.
>>                                    f8=Q+ <EGTB> (s=4)
>>               15->   8.30  Mat15   1. g5 hxg5 2. Ke7 d2 3. f7 d1=Q 4.
>>                                    f8=Q+ <EGTB> (s=5)
>>               16     9.02  Mat15   1. g5 hxg5 2. Ke7 d2 3. f7 d1=Q 4.
>>                                    f8=Q+ <EGTB> (s=4)
>>
>>
>>It finds it in about .01 seconds here...
>
>Just out of curiosity, how long would it take Crafty to find the win if it
>weren't for the KQPPKQ tablebase?
>
>jm


Not within 30 seconds.  Unfortunately someone started playing Crafty online so I
had to stop.  I'll try again later.



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