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WBEC Ridderkerk,
was a private chess engine rating list and chess engine news and tournament site maintained and hosted by Leo Dijksman. The rating list is based on games automatically played via the Chess Engine Communication Protocol with WinBoard and UCI engines which comply to the rules [3]. WBEC tournaments started in 2001 with four divisions, continued by 2011 and its 17th edition, in six devisions with 24 engines each plus qualifier for new engines [4]. The ELO rating is calculated using Bayesian Elo Rating by Rémi Coulom [5]. As of 2012, after finishing the 19th edition, Leo Dijksman had no fun anymore with computerchess tournaments, due to many clones/deratives and some authors seem not to be willing to fix their own bugs [6] [7]. Leo Dijksman died in February 2015 after battling cancer for almost two years [8]. His WBEC Ridderkerk sites are thankworthy archived by the Internet Archive [9].


Forum Posts

WBEC Links

WBEC computer chess newspage
History WBEC Ridderkerk tournaments

External Links


  1. Kaart uit 1584 van Jan Potter, uit de collectie Binnenlandse Kaarten Hingman van het Nationaal Archief. Ridderkerk, Ridderkerk from Wikipedia, Kaart Ridderkerk (1584) - Geschiedenis van Zuid-Holland
  2. Ridderkerk on the river island of IJsselmonde, where Noord meets Lek for the Nieuwe Maas, Noord and Nieuwe Maas were former continuations of the Merwe(de), itself a distributary branch of the Rhine, at times also fed by the Meuse
  3. Information and rules to participate from WBEC Ridderkerk (Internet Archive)
  4. Setup of WBEC Ridderkerk (Internet Archive)
  5. Bayesian Elo Rating by Rémi Coulom
  6. Information and rules to participate from WBEC Ridderkerk (Internet Archive)
  7. Sad News Regarding WBEC by Adam Hair, CCC, July 14, 2012
  8. Very sad news about Leo Dijksman by Volker Pittlik, Winboard Forum, March 02, 2015
  9. WBEC Ridderkerk, chessengine news and tournament site, hosted by the Internet Archive

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