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Subject: Re: Fritz 9 handicapping UCI engines even more?

Author: Günther Simon

Date: 11:14:23 10/05/05

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On October 05, 2005 at 11:56:38, Djordje Vidanovic wrote:

>On October 05, 2005 at 11:49:49, Henrik Dinesen wrote:
>
>>On October 05, 2005 at 10:47:48, Djordje Vidanovic wrote:
>>
>>>On October 05, 2005 at 07:38:30, Henrik Dinesen wrote:
>>>
>>>>On October 05, 2005 at 07:12:19, Gian-Carlo Pascutto wrote:
>>>>
>>>>>Do I understand this German post correcly:
>>>>>
>>>>>http://www.f23.parsimony.net/forum50826/messages/134294.htm
>>>>>
>>>>>i.e. Fritz 9 turns off critical options in UCI engines, specifically Fruit???
>>>>>
>>>>>--
>>>>>GCP
>>>>
>>>>It only talks about the latest beta-GUI, that sends wrong setting info.
>>>>Where else this applies, I can't see from that tread.
>>>>
>>>>Probably Joachim can expalin more about it.
>>>>
>>>>Regards
>>>>Henrik
>>>
>>>
>>>Jochim did say that the cat is out of the bag, and probably won't comment on it
>>>any more.  However, let's say that Fruit's history pruning option in the
>>>September 9 CB GUI is simply turned off when you restart the game and keeps
>>>being turned off till you restart the program. On average this bring overall
>>>strength quite substantially...
>>>
>>>Something like this goes on ( snippets out of the CB gui log):
>>>
>>>0.078: < option name History Pruning type check default true
>>>28.281: > setoption name History Pruning value false
>>>
>>>
>>>Etc.
>>>
>>>
>>>Djordje
>>
>>Yes, not too smart. Though, I suppose it's a bug...
>>
>>Regards
>>Henrik
>
>
>Yes, it must be a bug which can be corrected. I have no doubts about any kind of
>premeditation, especially because Fruit 2.2 did not appear till Sept. 29, and
>the GUI update came out on Sept. 9.
>
>Djordje


This says nothing Djordje. The option is _much_ longer in Fruit(since 2.0).

Guenther

< ENGINE Fruit 2.1 UCI by Fabien Letouzey
< ENGINE id name Fruit 2.1
< ENGINE id author Fabien Letouzey
< ENGINE option name Hash type spin default 16 min 4 max 1024
< ENGINE option name Ponder type check default false
< ENGINE option name OwnBook type check default true
< ENGINE option name BookFile type string default book_small.bin
< ENGINE option name NullMove Pruning type combo default Fail High var Always
var Fail High var Never
< ENGINE option name NullMove Reduction type spin default 3 min 1 max 3
< ENGINE option name Verification Search type combo default Endgame var Always
var Endgame var Never
< ENGINE option name Verification Reduction type spin default 5 min 1 max 6
< ENGINE option name History Pruning type check default true
< ENGINE option name History Threshold type spin default 60 min 0 max 100
< ENGINE option name Futility Pruning type check default false
< ENGINE option name Futility Margin type spin default 100 min 0 max 500
< ENGINE option name Delta Pruning type check default false
< ENGINE option name Delta Margin type spin default 50 min 0 max 500
< ENGINE option name Quiescence Check Plies type spin default 1 min 0 max 2
< ENGINE option name Material type spin default 100 min 0 max 400
< ENGINE option name Piece Activity type spin default 100 min 0 max 400
< ENGINE option name King Safety type spin default 100 min 0 max 400
< ENGINE option name Pawn Structure type spin default 100 min 0 max 400
< ENGINE option name Passed Pawns type spin default 100 min 0 max 400



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