Imagination is more important than knowledge.
--  Albert Einstein

About Company

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

Version history

    ProDeo 1.7 series



    Even older versions





ProDeo (version 1.7) approximately 2700 ELO - Size 4 Mb

  • Download ProDeo 1.8 
  • After the download open the archive and extract the folder ProDeo 1.8 to your harddisk.


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


    • Under Chessbase this means: Engine -> New UCI engine -> Browse -> RebelUCI.exe
    • Under ChessPartner do: Extra -> Engine Import Wizard -> Winboard engines -> Install -> ProDeo.exe
    • Under ARENA do: Engines -> New Engine -> UCI -> RebelUCI.exe


  • ARENA is freeware and can be downloaded here.



Version History

 ProDeo 1.8

 July 2012

 Considerable stronger than version 1.74

 ProDeo 1.74

 December 2011

 Now 60-65 elo stronger than version 1.6 based on self-play. Not bad

 for one month work.

 ProDeo 1.73  November 2011

 Further evaluation tuning and search improvements.


 ProDeo 1.72  November 2011

 Estimated elo gain 30 elo based on self-play against 1.71

 ProDeo 1.71

 Initial release after

 annother long

 absence of approx

 3- 4 years.

 Major cleanup of typical old REBEL 80's - 90's philosophy moving to modern

 chess programming.




Release Notes 1.8

July 6, 2011


  1. Based on self-play (3200 x blitz 1+1) an improvement of 60 elo.
  2. What this means in parctice against a pool of other engines is hard to predict.
  3. From what we have seen in the past it will be somewhat less most of the time.



 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 ® 2011 Ed Schröder