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Subject: Re: What is the lowest rated program tha can still solve this position ?

Author: Sune Fischer

Date: 12:04:22 04/20/03

Go up one level in this thread


On April 20, 2003 at 03:23:11, Uri Blass wrote:

>>>>[D]8/r7/8/5bk1/8/5B2/5RPP/6K1 b
>>>>
>>>>Terry
>>>
>>>Crafty sees this instantly:
>>>
>>>                4->   0.05   2.00   1. ... Ra1+ 2. Rf1 Ra2 3. g3 Rd2
>>>                5     0.05     ++   1. ... Ra1+!!
>>>                5     0.06   0.00   1. ... Ra1+ 2. Rf1 Rxf1+ 3. Kxf1 Bh3
>>>                                    4. gxh3 Kg6 5. Kf2
>>>                5->   0.07   0.00   1. ... Ra1+ 2. Rf1 Rxf1+ 3. Kxf1 Bh3
>>>                                    4. gxh3 Kg6 5. Kf2
>>>                6     0.08   0.00   1. ... Ra1+ 2. Rf1 Rxf1+ 3. Kxf1 Bh3
>>>                                    4. gxh3 Kg6 5. Kf2 Kg5
>>>                6->   0.09   0.00   1. ... Ra1+ 2. Rf1 Rxf1+ 3. Kxf1 Bh3
>>>                                    4. gxh3 Kg6 5. Kf2 Kg5
>>>                7     0.24   0.01   1. ... Ra1+ 2. Rf1 Rxf1+ 3. Kxf1 Bh3
>>>                                    4. gxh3 <EGTB>
>>
>>Good Job! I should test all my chess software on this ending, to see if they
>>"understand" the draw with a passed pawn or doubled pawns on the h-file with the
>>wrong coloured Bishop.
>>
>>But remeber, the Mach III is slow and old, with no EGTB and solves this position
>>quickly!
>>
>>Dan Spracklen had to give it some endgame understanding in the code; Which to me
>>says what could he have come up with, had he remained creative in the world of
>>CC? I believe he ended his chess programming career in 1994 when his last
>>programme was for Saiteck.
>>
>>Terry
>
>I think that every programmer can teach his(her) program to have that knolwedge
>if (s)he is interested in it.

All you have to do is to support the egtbs.

I doubt Crafty will solve this one "on its own".

-S.

>The only question is if it it is important enough for the programmer.
>I guess that a future movei will have this knowledge but I have no specific date
>that I promise to do it.

>Uri



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