1. Introduction
---------------

Vitruvius is a free UCI chess engine derived from Ippolit series (Ippolit/Robbolito/Igorrit/IvanHoe). It's not a complete chess program, but requires some UCI compatible GUI (like XBoard with PolyGlot, Eboard, Josè, Arena, Scid, Sigma Chess, Shredder, Chess Partner, or Fritz) in order to be used comfortably. Read the documentation for your GUI of choice for information about how to use DeepSaros with your GUI.

This version of Vitruvius supports up to 12 CPUs. If your PC is multi-CPU or multi-core, it's recommended to set "MultiThread"  to "true", and insert in "CPUs", the exact number of CPU cores on your computer.

2. Files
--------

This distribution of Vitruvius consists of the following files:

  * Readme.txt, the file you are currently reading. 

  * win64bit & win32bit, subdirectories contain the executables for Windows 32 and 64 bit.

  * Lin64, subdirectory contain executable for Linux 64 bit

  * Logos, subdirectory contain the logos of Vitruvius


3. HE versions
--------------

The versions that have the ending theme "-HE", are designed for high-end CPUs. They support hardware instructions: sse4, sse4.1, sse4.2, avx, aes and popcnt. If you use these versions of machines that are not appropriate, the program will crash.

4. OM version
-------------

The versions that have the ending theme "-OM", are designed for older CPUs. They support the generic i386 CPUs.

5. Time Tank
------------

In Blitz games is good to set the variable "TimeTank" to a value between 500 and 1000, depending on your CPU and time set. On a normal QuadCore, in matches from 1 min., 1000 is a good value. You need to experiment to see what is the optimal value for your machine.


6. Robbobases
-------------
Vitruvius use the OLD RobboTotalBase and RobboTripleBase.


7. Terms of use
---------------

Vitruvius is free for non-commercial use. It can be downloaded, installed and freely used without commercial purpose. The source code is, at this moment, private.


8. Acknowledgments
------------------

Special thanks to the Decembrists, the authors of the excellent software "Ivanhoe", which Vitruvius follows directly. Thanks for all the "Vitruvius beta-testers": Maurizio Platino, Dom Leste, Robert Flesher, Carl Bicknell, Winning Blunder e Trebejo (the latter two are nick-names).

