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Rybka diskvalifisert fra datasjakk-VM

Det har vært en del diskusjoner omkring ‘legitimiteten’ til Rybka og Houdini i de siste årene, men tidligere i år ble påstandene omkring Rybka tatt i nærmere øyensyn.

Idag skriver Chessvibes at International Computer Games Association (ICGA) har konkludert med at de nå finner det bevist at Rybka er en klone av Fruit. Rybka blir dermed diskvalifisert fra tidligere og fremtidige datasjakk-VM og Vasik Rajlich må også betale tilbake prispengene.

Sitat fra ICGA:

SITAT START

Rybka Disqualified and Banned from World Computer Chess Championships

The International Computer Games Association (ICGA) has been conducting an investigation into allegations that, in the chess program Rybka, the programmer Vasik Rajlich plagiarized two other programs: Crafty and Fruit. The ICGA has considered and evaluated the evidence presented to the investigation panel and the report prepared by the panel’s Secretariat. (The report and evidence files are attached.) We would like to thank those members of the panel who contributed to this investigation and the Secretariat for the enormous amount of conscientious work they have put in to this matter.

By a unanimous 5-0 decision of executive members of the ICGA we find ourselves in agreement with the verdict of the Secretariat’s report. We are convinced that the evidence against Vasik Rajlich is both overwhelming in its volume and beyond reasonable question in its nature. Vasik Rajlich is guilty of plagiarizing the programs Crafty and Fruit, and has violated the ICGA’s tournament rules with respect to the World Computer Chess Championships in the years 2006, 2007, 2008, 2009 and 2010. Specifically, Vasik Rajlich, on all five occasions, violated Tournament Rule 2 which requires that:

Each program must be the original work of the entering developers. Programming teams whose code is derived from or including game-playing code written by others must name all other authors, or the source of such code, in their submission details. Programs which are discovered to be close derivatives of others (e.g., by playing nearly all moves the same), may be declared invalid by the Tournament Director after seeking expert advice. For this purpose a listing of all game-related code running on the system must be available on demand to the Tournament Director.

By claiming other programmers’ work as his own, and failing to comply with the abovementioned rule, Vasik Rajlich has unfairly been awarded one shared 2nd-3rd place (in 2006) and four World Computer Chess Championship titles (in 2007, 2008, 2009 and 2010). Furthermore, it seems to the ICGA that Vasik Rajlich clearly knew that he was in the wrong in doing so, since he has repeatedly denied plagiarizing the work of other programmers.

The ICGA regards Vasik Rajlich’s violation of the abovementioned rule as the most serious offence that a chess programmer and ICGA member can commit with respect to his peers and to the ICGA. During the course of the investigation and upon presentation of the Secretariat’s report Vasik Rajlich did not offer, despite repeated invitations from the ICGA to do so, any kind of defence to the allegations, or to the evidence, or to the Secretariat’s report, other than to claim in an e-mail to myself on May 13th 2011 that:

Rybka has does not “include game-playing code written by others”, aside from standard exceptions which wouldn’t count as ‘game-playing’.

The vague phrase “derived from game-playing code written by others” also does not in my view apply to Rybka.

The ICGA is of the view that such a serious offence deserves to be met with correspondingly serious sanctions against the perpetrator. In deciding on appropriate sanctions the ICGA has borne in mind the approach of the International Olympic Committee for dealing with the most serious cases of the violations of its rules.

The ICGA has therefore decided as follows:

Vasik Rajlich is hereby disqualified from the World Computer Chess Championships (WCCC) of 2006, 2007, 2008, 2009 and 2010.

The 2nd-3rd place awarded to the program called “Rajlich” in the 2006 WCCC is hereby annulled, sole 2nd place is awarded to the program Shredder, and 3rd place in that event is awarded to the program Zappa.

The 1st places and World Computer Chess Champion titles awarded to the program Rybka in the 2007, 2008, 2009 and 2010 WCCCs are hereby annulled, and all the other programs that competed in those events are moved up in the final tournament standings by one place. Thus the revised tournament standings and titles for those events will now be as follows.

[…]

Vasik Rajlich is banned for life from competing in the World Computer Chess Championship or any other event organized by or sanctioned by the ICGA.

The ICGA demands that Vasik Rajlich return to the ICGA the four replicas of the Shannon Trophy presented at the World Computer Chess Championships in 2007, 2008, 2009 and 2010, and to return to the ICGA all prize money awarded for Rybka’s performances in those events.

David Levy [President – ICGA]
June 28th 2011

SITAT SLUTT

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Kommentarer

Exclamation_desat_24

Det har jo ligget lenge i luften… hvis Rajilch hadde villet, hadde han for lengst kunnet motbevise anklagene om plagiat.

Men det jeg synes er merkelig, er at Rybka i så mange år har vært den suverent beste motoren – så han må jo i de neste versjonene ha tilført koden mange nye og egne idéer etterhvert – han kan jo ikke bare ha justert den koden han tydeligvis har plagiert i versjon 1.

Men – jeg drømte at jeg slo Magnus i sjakk i natt. Han hadde kun kongen igjen mot min dame og tårn. Og det merkelige er at jeg husker åpningen, jeg hadde hvit:

1.e4 b6 2.d4 Sc6

I drømmen hadde allerede Magnus her -6 i evaluering (skulle vært pluss 6 siden jeg hadde hvit, men drømmer er drømmer). Så jeg sto altså til klar vinst etter to trekk…

Bonus til den som finner navnet på denne åpningen… :)

Exclamation_desat_24

Den åpningen har du plagiert!

(Sånn, nå får jeg denne diskusjonen inn i feeden min.)

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Beklager den litt trege tilbakemeldingen:

Vel, jeg har litt blandete følelser omkring dette. På den ene siden synes jeg det er synd at Rajlich ikke gjør mer for å forsvare seg. Når han er så passiv som han er så bidrar det bare til å styrke anklagene mot ham.

På den annen side sitter jeg litt igjen med en følelse av en slags heksejakt og den Spanske inkvisisjon. Det at flere av hans nærmeste konkurrenter satt i panelet gjør ikke ting bedre.

Litt off-topic, men litt mer positivt:

Magnus spilte nylig en handicap-match mot en ung jente som (såvidt jeg vet) vant NM i hennes klasse. Magnus hadde 30 sekunder mens motstanderen hadde 9,5 minutter:

Magnus vant, naturligvis. Selv om 30 sekunder kan høres mye ut for en spiller som Magnus, så krever det allikevel at man er rask på labben (bare det å flytte en brikke tar minst noen tidels sekunder). Det ville naturligvis vært enda enklere online, for da kan man jo bruke pre-moves (ikke så uvanlig at jeg slår spillere under 1800 i rating i bullet på under 10 sekunder ved å hovedsaklig bruke pre-moves).

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I følge Sjakkhuset er det Elise S. Jacobsen fra Tromsø, norgesmester for jenter U11, Magnus spiller mot. Artig video.