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ICGA Events in Yokohama – Success after panic

August 12th-18th 2013

By David Levy

The ICGA 2013 events in Yokohama were a great success, despite our having to change venues at short notice. Only 11 days before our events were due to start we were informed that the Pacifico conference and exhibition centre in Yokohama was no longer available and that we would have to find an alternative venue.

Thanks to the prompt action of my friend Professor Adrian Cheok, who has just recently moved to City University in London from Keio University in Yokohama, the ICGA was able to secure the necessary space at Keio University. We had two bright and well air-conditioned rooms, one of which was used for the conference and workshop, and the other for the chess events and the Computer Olympiad.

Then a huge effort was needed from ICGA Secretary-Treasurer Professor Hiroyuki Iida, who is based at JAIS in Kanazawa, on the far side of Japan, and who had to commute for a few days between Kanazawa and Yokohama so that everything would be ready in time. Hiroyuki also had to solve many logistical and equipment problems in order to ensure that we would have the necessary Internet connections and power sources for the various tournaments. Hiroyuki and his team had everything working and ready for the first round, only a couple of hours or so after the ICGA was given access to the playing room.

The results of the various tournaments can be seen on these pages. Many congratulations (again) to both Junior, programmed by Amir Ban and Shay Bushinsky, which successfully defended its World Computer Chess Championship title, and to Hiarcs, programmed by Mark Uniacke, which did likewise in the World Chess Software Championship (a uniform platform event). Here are a couple of links to articles that have already appeared about the chess events.



There were exactly 100 entries across the 20 tournaments in the Computer Olympiad. And the annual academic conference on computer games attracted around 70 participants, with the sessions spread over three days.

The ICGA would especially like to thank Keio University for providing its facilities at such short notice. We would also like to thank DGT Products for the loan of their electronic chess boards that enabled us to webcast the chess games in real time.

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Play Einstein online

Ein Stein Würfelt Nicht

Play with the bot on the online server
Registration is simple and free of charge.
Give the bot a name ending with _c to make clear that it is a computer player.

Currently, there is at least one very active EinStein bot on LittleGolem:
naive_child_c (written and operated by human user YHW ).

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Allegations against two more Chess Engines – The LOOP Program

By David Levy

The International Computer Games Association (ICGA) has received a formal complaint from Fabien Letouzey, the programmer of FRUIT, regarding the program LOOP. In addition the ICGA has received sufficient prima facie evidence to warrant an investigation. The allegation is that LOOP, which has participated in the World Computer Chess Championship, uses code derived from FRUIT. FRUIT placed second at the 2005 World Computer Chess Championship in Reykjavik.

LOOP was developed by Dr Fritz Reul. The ICGA has attempted to contact Dr Reul in order to give him the opportunity of commenting on the allegation prior to the ICGA conducting a technical investigation into LOOP, but it appears to us that Dr Reul does not wish to be found. The email address that had previously been used by Dr Reul is no longer active, so on behalf of the ICGA I have sent him two emails via a friend of his who indicated that he would pass email on to Dr Reul, who did not respond to either of my emails.

The ICGA is now commencing an “in absentia” investigation into LOOP in order to examine the allegation about the use of code derived from FRUIT. If Dr Reul wishes to defend himself against these allegations the ICGA would be pleased to hear from him. He will then be invited to comment on any evidence that the ICGA might consider during the investigation process.

Allegations have also been made concerning the program THINKER, which will also be the subject of an ICGA investigation.

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Rebuttal of Riis

This week Dr Soren Riis posted a four part article on Chessbase.com in a somewhat belated attempt to defend Vasik Rajlich. Regular readers will recall that Rajlich’s actions led the International Computer GamesAssociation (ICGA) to find him guilty of breaking a crucial tournament rule, as a result of which the chess program Rybka was stripped of its WorldComputer Chess Champion titles and Rajlich was banned for life from ICGA events.

Dr Riis gave his article a title to suggest that a miscarriage of justice has taken place. The ICGA now responds with two rebuttal articles, one by myself (as President of the ICGA) concerning some of the legalistic points raised by Riis’s article, and a robust detailed and thorough technical rebuttal by Mark Watkins.

Everyone interested in the Rybka scandal should read both of these rebuttals and then decide for themselves who and what they believe – Dr Riisor the ICGA’s investigation report.

Dr David Levy President – ICGA

The four parts of the Riis article: http://www.chessbase.com/newsdetail.asp?newsid=7791, http://www.chessbase.com/newsdetail.asp?newsid=7807, http://www.chessbase.com/newsdetail.asp?newsid=7811, http://www.chessbase.com/newsdetail.asp?newsid=7813

David Levy’s  Rebuttal: https://icga.leidenuniv.nl/wp-uploads/2013/03/DL_Rebuttal_to_Riis_article.January7th2012.pdf

Mark Watkins Technical Rebuttal: https://icga.leidenuniv.nl/wp-uploads/2013/03/Riis3_Mark.Watkins.for_.ICGA_.pdf

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