Toga II

Logo Name VN Authors Country
  Toga II  TOGA 1.4 Beta 5c 

Thomas Gaksch

Fabien Letouzey







Own Book

32bits 64bits


Multi Level










Engine Language : C++ By Thomas Gaksch based on Fruit 2.1 from F.Letouzey
First release :  
Last update: 24.02.2006
Open source: yes
Link : Fruitchess / Free version Fruit 2.1: WBEC

Toga II (compilations by Bryan Hofmann including a 64 Bit compilation!)

Opening Book  + EGBB Link to Performance.bin from Marc Lacrossse  look under download

EGBB by Daniel Shawul (Under Scorpio page) On WBEC

Thanks to use the latest DLL too with egbb 3-4-5

Download: Last update :


Toga II 1.4 Beta 5c

Version up to 8 cpu


Toga II 1.3.1

Toga II 1.3.4 modified

Tested By CCRL


here are the Final(?) releases of Toga (by Thomas) including
source an optimised compiles by Denis Mendoza.

These are extensively tested versions.

Toga II 1.3.1 is the strongest Toga to date - results can be seen at CCRL -
this is a re-compiled Toga II 1.3beta1

Toga II 1.3.4 is better at the end game and supports the Scorpio EGBBs it is
a corrected Toga II 1.3x4 - a recompiled Toga II 1.3x4b by Thomas with a
couple of setting changes.

Thanks again for the offer to host these latest Togas

All the best Shaun

P.S. Full details are contained in the packages.

Old versions:

Toga II 1.3 X 4



  2. ,
  5. by Ken Dail)
  6. TogaII_12beta2aLinux.rar(Compilation by Michael Höppenstein)
  8. by Peter Schäfer)
  10. by Peter Schäfer)



More uci option :



Toga is the strongest free uci engine with Rybka 1.0 Beta

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

By Thomas

Toga II 1.3x4 (beta version) 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.

Request -------

If you are the author of a commercial chess engine, or, as "beta tester", related to an author of a commercial chess engine, and want to use Toga based on Fruit in automated or non-automated tests in order to improve your own engine, then it would be very nice if you send me one copy of your engine (current release) for my own private testing purposes.

General -------

Toga II 1.3x4 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: or send an email to

Version -------

Toga II 1.3x4 based on Fruit 2.1

Following changes and extensions made:

- improved history pruning - improved futility pruning - improved lazy evaluation - new evaluation features (outpost knight etc.) - MultiPV Mode

New in 1.2

- more pruning - more extensions - new settings by Dieter Eberle

New in 1.2.1

- new settings - some minor bugfixes

new in 1.3x4

- changes in eval - changes in search - Endgame bitbases by Daniel Shawul (Scorpio)

A very big thank to Daniel for sharing his great endgame bitbases and his dll.

EGBBs ----- Toga uses the Scorpio endgame bitbases upto 5 pieces.

Installation ------------ First You have to download the 5men bitbases from Leo Dijksman's WBEC site . The egbbs are 340mb in size. Then put them anywhere in your computer. The default path is c:\egbb\ but you can change this in the uci options. The egbbdll.dll must be in the same folder as the bitbase files.

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

Special thanks to Dieter Eberle, Karl-Heinz Söntges, Shaun Brewer for testing Beta Versions. A big thank to Dieter Eberle for his setting. Orlando Mouchel for bugfixes and new ideas. Raimund Heid for his new ideas. Wilhelm Hudetz for the Logo.

Without their help i wouldn´t be able to increase the playing strenght, compared to Fruit 2.1, by about 100 Elo.

Thomas Gaksch







 Last updated 01/28/08