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Subject: Re: Fruit 2.2 vs Toga II

Author: Dann Corbit

Date: 15:24:13 10/18/05

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On October 18, 2005 at 18:02:26, Majd Al-Ansari 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.
>>
>>Mark Anderson
>
>
>
>I was under the impression that Toga was just a different compilation of Fruit
>2.1 which made it run faster thus giving a little more strength.

That's wrong.

Here is the Toga II readme file contents:


Legal details
-------------

Toga II 1.0 based on Fruit 2.1 by Fabien Letouzey.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at
your option) any later version.

This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA

See the file "copying.txt" for details.


General
-------

Toga II 1.0 based on Fruit is a UCI-only chess engine.  This distribution comes
up only with
Windows executable and platform-independent source code.



Official distribution
---------------------

You can download the GNU GPL Package (incl. sources) with Toga II based on Fruit
at: http://www.uciengines.de/
or send an email to togaII@gmx.de



Version
-------

Toga II 1.0 based on Fruit 2.1

Following changes and extensions made:

- improved history pruning
- new/improved futility pruning
- improved king safty
- lazy evaluation
- new evaluation features (exchange bonus, outpost knight etc.)



Thanks Fabien Letouzey for the great source code of the program Fruit 2.1.


Thomas Gaksch





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