Wisdom is knowing how

   little we know -- Socrates

About Company

Started in 1980, retired in 2004 REBEL was baptized into ProDeo, latin for gratis according to Dutch tradition.

Other Information


   ProDeo 1.8 series



    ProDeo 1.7 series



    Older versions




ProDeo (version 1.86)  approximately 2700 ELO   Size 4 Mb

Download ProDeo 1.86


Install the self-extracting archive into a folder of your choice.


To run ProDeo you will need to announce the engine first.


Under Chessbase this means: Engine -> New UCI engine -> Browse -> RebelUCI.exe

Under ARENA do: Engines -> New Engine -> UCI -> RebelUCI.exe

Under ChessPartner do: Extra -> Engine Import Wizard -> Winboard -> Install -> ProDeo.exe


ARENA is freeware and can be downloaded here.



Release Notes 1.86

November 14, 2013


Since I was persuaded to participate in the upcoming 45th CSVN Programmers Tournament in Leiden on 30th November and 1st December 2013 and did not want play with the same version as last year the chess engine has been worked on and has gained a little in strength.




1. Affter 30+ years I finally exchanged Rebel's selective search to standard nullmove.


2. Rewrite time control.


3. Mobility tuning.


Since there are 2 weeks left before the tournament it's not unlikely there will be a small update.





 Chess program  Ed Schröder
 Opening Book  Jeroen Noomen
 Winboard support  Lex Loep
 UCI Interface  Odd Gunnar Malin
 Beta tester  Thorsten Czub


Programmer code (ideas taken from external sources)


 ProDeo 1.6  Fruit 2.1  eval.cpp line 1023  Penalty for caught bishops on the 6th row.
 ProDeo 1.6  Fruit 2.1  eval.cpp line 1063  Free rook in case of lost castling rights.
 ProDeo 1.8  Stockfish 2.11  evaluate.cpp line 192

 Added the principle of safe_queen_checks to

 King Safety.



Copyright ® 2013  Ed Schröder