The rumors about Strelka beeing a Rybka clone is still alive

Discussion of anything and everything relating to chess playing software and machines.

Moderator: Ras

Tony Thomas

Re: The rumors about Strelka beeing a Rybka clone is still a

Post by Tony Thomas »

One thing I dont understand is if he is so good in reverse engineering as some of you claim, why didnt he reverse engineer the latest version? Or you think that one is going to be available in two years as well?
Steve B

Re: The rumors about Strelka beeing a Rybka clone is still a

Post by Steve B »

wow

so it seems that the experts here were wrong twice?

first Strelka was not a clone ..when they said initially it was

and now the new version of Strelka is a clone ..and they say it is not?

:shock: Regards
Steve
Uri Blass
Posts: 10792
Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel

Re: The rumors about Strelka beeing a Rybka clone is still a

Post by Uri Blass »

Tony Thomas wrote:One thing I dont understand is if he is so good in reverse engineering as some of you claim, why didnt he reverse engineer the latest version? Or you think that one is going to be available in two years as well?
Maybe he has not enough money to buy rybka and without the exe he cannot reverse engineer it :D

Seriously
I doubt if he is going to continue to reverse engineer later versions.

Maybe it was enough for him to prove that he can reverse engineer one version when the motivation was to prove to the public that rybka shows wrong depth numbers and wrong node count.

Uri
User avatar
Sylwy
Posts: 4815
Joined: Fri Apr 21, 2006 4:19 pm
Location: IAȘI - the historical capital of MOLDOVA
Full name: Silvian Rucsandescu

Re: The rumors about Strelka beeing a Rybka clone is still a

Post by Sylwy »

Hi Tony !

Nice to hear you are alive ! :lol: :lol: :lol:

We need some extraordinary investigations here ! :lol: :lol: :lol:

Good luck !

:lol: :lol: :lol:
Sylwy
Tony Thomas

Re: The rumors about Strelka beeing a Rybka clone is still a

Post by Tony Thomas »

Uri Blass wrote:
Tony Thomas wrote:One thing I dont understand is if he is so good in reverse engineering as some of you claim, why didnt he reverse engineer the latest version? Or you think that one is going to be available in two years as well?
Maybe he has not enough money to buy rybka and without the exe he cannot reverse engineer it :D

Seriously
I doubt if he is going to continue to reverse engineer later versions.

Maybe it was enough for him to prove that he can reverse engineer one version when the motivation was to prove to the public that rybka shows wrong depth numbers and wrong node count.

Uri
Then why the whole drama of meeting Sergei and sending the source to Bryan and Dann? There were many pirate sites on the net a while back, they had every single version of every commercial program ever released. Someone as good as him should be able to find that. If I had skills like him, I would have done reverse engineering on the latest code, then I would have sold it to the competition.

Its time for grim to reap some heads

Tony

Did you notice that his name looks almost like yours? Strelka version 2.0 by Yuri Blaskiov.
:wink: :wink:
Uri Blass
Posts: 10792
Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel

Re: The rumors about Strelka beeing a Rybka clone is still a

Post by Uri Blass »

Tony Thomas wrote:
Uri Blass wrote:
Tony Thomas wrote:One thing I dont understand is if he is so good in reverse engineering as some of you claim, why didnt he reverse engineer the latest version? Or you think that one is going to be available in two years as well?
Maybe he has not enough money to buy rybka and without the exe he cannot reverse engineer it :D

Seriously
I doubt if he is going to continue to reverse engineer later versions.

Maybe it was enough for him to prove that he can reverse engineer one version when the motivation was to prove to the public that rybka shows wrong depth numbers and wrong node count.

Uri
Then why the whole drama of meeting Sergei and sending the source to Bryan and Dann? There were many pirate sites on the net a while back, they had every single version of every commercial program ever released. Someone as good as him should be able to find that. If I had skills like him, I would have done reverse engineering on the latest code, then I would have sold it to the competition.

Its time for grim to reap some heads

Tony

Did you notice that his name looks almost like yours? Strelka version 2.0 by Yuri Blaskiov.
:wink: :wink:
I know that it was easy for him to get commercial rybka and I was only joking about the option that he did not have enough money to buy rybka.

I also guess that he was not afraid to send the code to other people because he was not afraid from the possibility that his engine is going to be considered as a clone.

I am sure that he is not stupid and knew that his engine will be discovered as a clone sooner or later.

Uri
gerold
Posts: 10121
Joined: Thu Mar 09, 2006 12:57 am
Location: van buren,missouri

Re: The rumors about Strelka beeing a Rybka clone is still a

Post by gerold »

mjlef wrote:LOL

Vasik just posted something on the Rybka forum you should read:

http://rybkaforum.net/cgi-bin/rybkaforu ... id=1655#fp

he says "1) There is no doubt in my mind that the similarities (in executables and in output) between Rybka 1.0 and Strelka 1.8 are not a coincidence. This is in contrast to Strelka 1.0, where the similarities didn't seem to me to be excessive."

He also casts doubt of anyone being able to steal RYbka, stating it has only been on one machine and never connected to the internet (he needs to watch Mission Impossible to see how those clever guys can get anything!)

Interesting. Has anyone reviewed the source code of Strelka 1.8, or just 1.0?

Mark
No one has view code of Strelka 1.8 yet. I am not convinced that
Strelka 1.8 or the beta one is a clone. No one has view both
source code yet. Untill this time no one can be sure. :)
It would be a big error for Vas to release his Source code. He
has the strongest engine in the world. Why would he want to
release his source code just to set this matter and take the
chance of someone stealing his code.

Gerold.
User avatar
tiger
Posts: 819
Joined: Sat Mar 11, 2006 3:15 am
Location: Guadeloupe (french caribbean island)

Re: The rumors about Strelka beeing a Rybka clone is still a

Post by tiger »

matejst wrote:I am reading this discussion for a few days now and I am quite surprised that it doesn't end.

If I remember well, there were rumours, a few years ago, that Rybka too was a Fruit clone, and Vaclav Rajlich, in an interview found on the Alex Schmidt site, admitted he had used some ideas from the Fruit code. (There is something interesting in the fact that Rybka, although tested previously, has made his way only a few months after Letouzey's work.) But he was obviously not the only one. A lot of engines made a tremendous jump in strength after Fruit (an average of more than 60 elo): HIARCS, Fritz, Loop, among others. Just look at the CSS ratings. The only one not to improve dramatically was SMK's Shredder. Did anybody accuse their authors? No. They found new ideas (in the code of Fruit, perhaps) and they implemented them.

Suddenly there is a young Russian with a new engine: the story is starting all over again, and this time, it is an incredible one. Of course, Osipov has probably read all the Ed Shroeder's articles about programming, and, of course, he reviewed Crafty's, Toga's, Fruit's and Glaurung's code. It is natural that he also tried to discover Rybka's secrets, to have a similar evaluation function, for it is an excellent evaluation function and everybody is doing it too (Christophe Théron has admitted it in this same forum).

(..snipped..)

I have said nothing of the sort, and I actually do not understand what you are talking about.


// Christophe
matejst
Posts: 368
Joined: Mon May 14, 2007 8:20 pm
Full name: Boban Stanojević

Re: The rumors about Strelka beeing a Rybka clone is still a

Post by matejst »

I am deeply sorry: when I read my message, it was clear that the sentence was not well written. I present my excuses to M. Théron.

Je suis désolé, M. Théron. J'écris en anglais très péniblement, avec un dictionnaire, et je vous ai fait dire quelque chose que vous n'aviez certainement pas dit. Je vous prie de croire que je n'en avais pas l'intention, et je vous prie sincèrement de m'excuser.

BS
Bryan Hofmann

Re: The rumors about Strelka beeing a Rybka clone is still a

Post by Bryan Hofmann »

mjlef wrote:LOL

Vasik just posted something on the Rybka forum you should read:

http://rybkaforum.net/cgi-bin/rybkaforu ... id=1655#fp

he says "1) There is no doubt in my mind that the similarities (in executables and in output) between Rybka 1.0 and Strelka 1.8 are not a coincidence. This is in contrast to Strelka 1.0, where the similarities didn't seem to me to be excessive."

He also casts doubt of anyone being able to steal RYbka, stating it has only been on one machine and never connected to the internet (he needs to watch Mission Impossible to see how those clever guys can get anything!)

Interesting. Has anyone reviewed the source code of Strelka 1.8, or just 1.0?

Mark
I have only seen the source code for 1.0, and that is what I reported on.

Bryan