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Subject: Re: Brand new Fruit 2.0 "fast" (from 24.12.2004) on playchess.com

Author: Uri Blass

Date: 12:38:25 12/29/04

Go up one level in this thread


On December 29, 2004 at 15:18:31, Dann Corbit wrote:

>On December 29, 2004 at 14:58:43, Dann Corbit wrote:
>
>>On December 29, 2004 at 14:53:42, Uri Blass wrote:
>>
>>>On December 29, 2004 at 14:43:40, Dann Corbit wrote:
>>>
>>>>Here is the current result of a little 10'+10" contest I have running:
>>>>  Program       Elo    +   -   Games   Score   Av.Op.  Draws
>>>>1 Fruit_src   : 2850   66 149    52    83.7 %   2566   17.3 %
>>>>2 Crafty-1917 : 2670   85  86    52    61.5 %   2588   26.9 %
>>>>3 Glaurung    : 2660   85  89    53    60.4 %   2587   22.6 %
>>>>4 Arasanx     : 2648   90  90    52    57.7 %   2594   19.2 %
>>>>5 Movei       : 2572   81  93    52    45.2 %   2606   25.0 %
>>>>6 Ges         : 2518   82  83    53    37.7 %   2605   30.2 %
>>>>7 Natwarlal   : 2494  100  80    52    33.7 %   2612   21.2 %
>>>>8 GreKo       : 2389  147  69    52    20.2 %   2627   13.5 %
>>>>
>>>>Conclusion:
>>>>Fruit 2.0 looks pretty strong.
>>>>The Ges version is 1.32, and I was a bit surprised at how well Ges performed.
>>>
>>>I am surprised by the bad result of movei.
>>>It is certainly weaker than Fruit and probably also weaker than Crafty inspite
>>>of the fact that I do not think that it is weaker than Crafty19.17 that is known
>>>to be a weak version of Crafty but I think that it is stronger than Glaurung and
>>>Arasan.
>>>
>>>public version even performed better than Crafty19.15 in a recent tournament
>>>
>>>see
>>>http://www.playwitharena.co.uk/modules.php?name=ATL_League
>>
>>I think that there may have been a problem in recoginzing the movei book.  I
>>will look into it.
>
>Movei, Fruit, and Natwarlal are not using a book -- not sure why yet.
>In a 10'+10" contest, lack of a book should be very telling.  Not sure why Fruit
>should still be pounding the stuffings out of everybody.

In the case of movei you need to change the name of the book based on the
version number of the program

Version number is given in defs.h
I guess that the version number that you have is 300(no significant difference
in playing strength from 295 expected)

A book is important for not losing the same game again and again.

Fruit simply does not lose when you choose weak opponents for it so it does not
need book.


It is not the first time that a program does good results with no book and
List is leading the rating list of the infinite loop with no book

http://freehosting.hostrave.com/p/iggor/nil/NIL7_rat.txt

books are simply not very important(at least books that are used by amateurs)
and it seems that the only importance of them is to prevent losing the same game
again and again.

Uri



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