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Subject: Re: Fruit 2.2 vs Toga II

Author: Dann Corbit

Date: 15:15:18 10/18/05

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On October 18, 2005 at 17:49:50, Mark R. Anderson wrote:

>On October 18, 2005 at 15:24:52, Dann Corbit wrote:
>
>>On October 18, 2005 at 15:10:36, Mark R. Anderson wrote:
>>
>>>CCC Friends,
>>>
>>>I have heard that Toga is a Fruit clone.  I presume this was done with the
>>>permission of the author, when Fruit was a free engine.  So, what is the
>>>difference in style and capabilities between Fruit and Toga?  Is Toga a
>>>"tweaked" Fruit, like Uri's Fruit version?
>>>
>>>What makes Toga separate from Fruit?  I know from experience that Toga is a good
>>>and strong engine, but the engine it was based on, Fruit, is really a top
>>>engine, so one would expect that.  So, I am wondering, why should I have Toga on
>>>my hard drive, if I have a much improved version of the engine it was derived
>>>from (Fruit 2.2).  I mean no disrespect to the creator of Toga ... I am just
>>>curious.  I have  Hiarcs 9, 8, 7, etc, and also Fritz 8, 7, 6, 5, but I only
>>>tend to really play and analyze with the latest versions.  So, what has Toga got
>>>that Fruit doesn't?  Does it have a different playing style, or is it just
>>>perhaps Fruit 2.1+?
>>>
>>>Thanks for any comments or insight.
>>
>>The license of Fruit 2.1 and earlier clearly allowed GPL modifications of the
>>source code.
>>
>>Hence, there is no problem with the existance of "clones" as long as they
>>publish the modified source code.
>>
>>Thomas Gaksch has made some small changes to the source code that result in
>>different play.  From the data I have seen, Toga II 1.0 is stronger than Fruit
>>2.1 but not as strong as Fruit 2.2.
>>
>>At any rate, it will play a bit differently than Fruit does.
>>
>>If you want to know exactly what has been changed, you can do diffs on the
>>source trees.  I believe that Mr. Gaksch has also added one new file.
>
>Dann,
>
>Thanks for the info.  How about playing style?

I do not know a clear definition of playing style.  If I did know such a
definition, I probably would not be competent enough to comment on it.

>Tactical strength?

Very strong -- about as strong as most professional programs

>Endgame?

No EGTB or Bitbase files, so it will probably make some endgame mistakes
(actually, I have watched it do so).  Not enough to make a significant
difference in playing strength.  But I would not use Toga II for endgame
analysis.

>That's more like what I mean.
>
>Mark



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