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Subject: Re: Crafty 19.05 binary

Author: Vincent Lejeune

Date: 16:15:36 11/21/03

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On November 21, 2003 at 18:18:52, Robert Hyatt wrote:

>On November 21, 2003 at 17:43:56, Vincent Lejeune wrote:
>
>>On November 21, 2003 at 16:02:21, Vincent Lejeune wrote:
>>
>>>On November 21, 2003 at 15:40:18, Dann Corbit wrote:
>>>
>>>>Caveat... To run this binary, you will need one of these versions of the Win32
>>>>operating system:
>>>>Windows XP, Windows 2000 Professional, Windows NT Workstation 4.0, Windows
>>>>Server 2003, Windows 2000 Server, or Windows NT Server 4.0
>>>>
>>>>Binary:
>>>>ftp://cap.connx.com/chess-engines/new-approach/Crafty-Smp-1905.exe
>>>>
>>>>Whole shooting match:
>>>>ftp://cap.connx.com/chess-engines/new-approach/c19_05.zip
>>>>
>>>>In theory, it's NUMA aware, but I have not tested that part.
>>>>
>>>>I can't make a single threaded version, because the NUMA call stuff rules that
>>>>out.
>>>>
>>>>I had to make a bunch of changes to get it to compile.  Hopefully, I did not
>>>>break anything.
>>>
>>>The 6-men TB works well, thanks !
>>>
>>>setboard 8/8/1r1k4/8/5P2/6RK/5P2/8 w - - 0 1
>>>1. Rg6+! Kc5 2. f5! Rb2 3. Kg3 Kd5! 4. Re6! Rb3+! 5. Re3 Rb8! 6.
>>>f6! Rf8! 7. Rf3! Ke6! 8. f7! Rxf7! 9. Rxf7! Kxf7! 10. Kf4! Kf6! 11.
>>>f3! Ke6 12. Kg5! Kf7! 13. Kf5! Ke7 14. Kg6! Kd6 15. Kf6 Kc5 16. f4!
>>>Kd5 17. f5! Kd6! 18. Kg7! Kc5 19. f6! Kb4 20. f7! Ka3 21. f8=Q+ Kb2
>>>22. Qc8 Kb1 23. Qc4 Ka1 24. Qb5 Ka2 25. Kf6! Ka1 26. Ke5! Ka2 27.
>>>Kd4! Ka1 28. Kc3! Ka2 29. Qb2#
>>>end-game phase
>>>              time surplus   0.00  time limit 30.00 (3:30)
>>>              depth   time  score   variation (1)
>>>                2     0.00  Mat18   1. Rg6+ <EGTB>
>>>                2->   0.00  Mat18   1. Rg6+ <EGTB>
>>>                3     0.00  Mat18   1. Rg6+ <EGTB>
>>>                3->   0.00  Mat18   1. Rg6+ <EGTB>
>>>                4     0.00  Mat18   1. Rg6+ <EGTB>
>>>                4->   0.00  Mat18   1. Rg6+ <EGTB>
>>>              time=0.00  cpu=100%  mat=2  n=19  fh=100%  nps=10k
>>>              ext-> chk=5 cap=0 pp=0 1rep=0 mate=0
>>>              predicted=0  nodes=19  evals=8
>>>              endgame tablebase-> probes=1  hits=1
>>>              SMP->  split=0  stop=0  data=0/4096  cpu=0.00  elap=0.00
>>
>>In fact not so well !!!!
>>The analyze give mate in 18 and the egtb main-line give mate after 29 moves
>>!!???
>>
>>any idea ?
>
>
>Something is clearly broken.  Here is output from my dual xeon:
>
>1. Rg6+! Kc5 2. Rxb6! Kxb6! 3. Kh4 Kb5 4. Kh5 Kc5 5. Kh6 Kc4 6. Kg7
>Kb3 7. f5! Ka2 8. Kf6 Ka1 9. Ke5! Kb1 10. Kd4 Ka1 11. Kd3 Ka2 12.
>f6! Ka3 13. f7! Ka4 14. f8=Q! Kb5! 15. Qd6! Ka4! 16. Qb6 Ka3 17.
>Kc3! Ka2 18. Qb2#
>White(1): noise 0
>noise level set to 0.
>White(1): move
>end-game phase
>              clearing hash tables
>              time surplus   0.00  time limit 22.50 (3:30)
>              depth   time  score   variation (1)
>                1     0.00   5.04   1. Rg6+ Kc5 2. Rxb6 Kxb6
>                1->   0.00   5.04   1. Rg6+ Kc5 2. Rxb6 Kxb6
>                2     0.00     ++   1. Rg6+!!
>                2     0.00  Mat18   1. Rg6+ <EGTB>
>                2->   0.01  Mat18   1. Rg6+ <EGTB>
>                3     0.01  Mat18   1. Rg6+ <EGTB>
>                3->   0.01  Mat18   1. Rg6+ <EGTB>
>                4     0.01  Mat18   1. Rg6+ <EGTB>
>                4->   0.01  Mat18   1. Rg6+ <EGTB>
>              time=0.01  cpu=0%  mat=2  n=19  fh=100%  nps=10k
>              ext-> chk=5 cap=0 pp=0 1rep=0 mate=0
>              predicted=0  nodes=19  evals=8
>
>Maybe he has missing tables which confuse the PV output but not the search.
>IE the Search assumes every table is present as does the tables themselves.
>The PV stuff has to search thru the tables you actually have, however, and
>if the right one is missing, the PV will be longer than it should be...

Ok thanks, you point the reason

The only 6 pieces I have is KRPPKR but that's not a problem.

The shortest mate need the KRPPK at 2nd move and I have none of the 4vs1 egtb !

Sorry for the warning




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