Jeroen wrote:In the last WCCC in Beijing there were specific rules concerning the use of opening books. The rules stated (if I recall correctly) that each book author can only be part of one team (= program+GUI+book). To prevent other chess programs using the same book, each team had to reveil its book author before the start of the tournament, who also had to give permission that his book was being used.
I asked the ICGA about this issue as soon as my Rybka 3 book had become available through ChessBase. The former rules didn't prevent the situation that a chess programmer would buy the Rybka 3 book and use it in the WCCC.
Of course the new rules would not rule out everything, but IMO they were a clear improvement.
I understand that means that Tiger nor Rebel nor Rybka ever can join an event as they use your book also?
So you basically state that what happened in past is illegal, namely that several engines at same time, Tiger and Rebel, joined events with a Noomen book?
What made you modify your viewpoint on that?
I believe in consequent decision taking, not in flipping sides each few years whatever suits you best at that time, as that would make you look like an ICGA board member.
Oh note that i forgot to mention that Sjeng's book original was made by Jeroen also, so in its basis probably still has a few of those lines as well.
The consensus for ICGA a few years ago was that if a book author had authorized a programmer to use a book his, it could be used.
It would be silly to change that now. Many book authors provide 2 or 3 engines with a book. Right now Diep and Baron for example have Arturo Ochoa as their book author.
It would be very silly to suddenly forbid that now, something that first was getting used by Jeroen himself.
Vincent