Fabien's open letter to the community

[Robert Flesher]

To add some humor to this situation can someone please link this thread to the Rybka forum. I'd like to know how many milliseconds it will last.

has been linked for some time -- http://rybkaforum.net/cgi-bin/rybkaforu ... ?tid=20625

Thanks John, the picture of playing chess from behind bars really had me laughing!

[Dr.Wael Deeb]

To add some humor to this situation can someone please link this thread to the Rybka forum. I'd like to know how many milliseconds it will last.

has been linked for some time -- http://rybkaforum.net/cgi-bin/rybkaforu ... ?tid=20625

Thanks John, the picture of playing chess from behind bars really had me laughing!

Programming from behind bars is even more fun

[Chan Rasjid]

I am honest

Honestly, does anyone know what the final conclusion is

And, also, what was the question

Please summarize for those who are just average in intelligence.

Rasjid

[JuLieN]

Please summarize for those who are just average in intelligence.

Youri : my Strelka is Rybka.
Fabien : This Strelka is my Fruit!
Bob&all. : This Rybka is this Fruit.

[Dr.Wael Deeb]

Please summarize for those who are just average in intelligence.

Youri : my Strelka is Rybka.
Fabien : This Strelka is my Fruit!
Bob&all. : This Rybka is this Fruit.

Julien,you've managed short circuit my brain elctrical system

[Laskos]

Proof that Rybka is a Fruit derivative has been presented since Rybka 1.0 beta, though some people will never accept any amount of proof as adequate.

For 3 years this controversy has not been enough to demand of you to remove Rybka from your lists ?

You may consider including Houdini and co instead of removing Fruit clones.

Matthias.

Hi Matthias,

Controversy means that anything can be right. When there is controversy among experts, there is confusion among the masses. When confused, you either stand still or move. Your choice, either can be right.

Nice, while confused, Gabor has two states:

1. Gabor is confused, test Chessbase confusing engines
2. Gabor is confused, ban free confusing engines

Kai

And if I do the opposite, someone else will write me who is equally convinced he is right. Actually, it has happened many times.

Please, could you do randomly, as you imply, the opposite, for one month, along with all your buddies? Some pick randomly Chessbase things, others free things, I understand .

Kai

[Matthias Gemuh]

Please summarize for those who are just average in intelligence.

Youri : my Strelka is Rybka.
Fabien : This Strelka is my Fruit!
Bob&all. : This Rybka is this Fruit.

Vas: This Strelka is my Rybka!


Conclusion: Fruit -> Rybka -> Strelka.

[bob]

I've communicated with Fabien and he now has an active CCC account. I'd suggest that we try to have a civil discourse and let him explain his interpretation of what has happened. I will alert the other mods to keep a close eye on these threads so that they don't get out of control. I doubt you will hear anything new or surprising, but it will be coming from a new source. What you believe is up to you, of course.

[bob]

My good friend Fabien Letouzey, author of Fruit, asked me to post the following message for him:

Is there a particular reason for Fabien not posting this message himself?
The best advice for Fabien would be to settle this matter directly with Vas Rajlich, chess forums are hardly the right place to resolve this kind of issue.

Robert

He was having problems with the sign-up process and getting activated. That has been resolved, so he should chime in pretty soon I would think... I just sent him an email notifying him that Sam said his account was ready for use.

[Sven]

He did not _lose_ the sources. He just did not keep old versions but overwrote them with each modification.

Maybe someone has already replied the same on one of the next 15 pages of this thread, I have just read a few pages until now ...

Sven

It's going to be a difficult case, Vas never saved his sources codes, he doesn't have the Rybka 3 one, so I'm sure he doesn't have the code of Rybka 1.1 or 2.0, all the investigations would need to be done as reverse engineered code.

It was unfortunate that Vas claimed Strelka's code as his own, since later it was found out that it had significant parts of Fruit.

As about the ply and node count obfuscations, they have been explained at Rybka forum, 3 plies are added to normalize the count relative to other engines, as earlier plies are "thinner" and don't fulfill their definition of ply, nodes are recalculated so they can be used to compare different hardware, i.e. higher nodes must mean higher strength at all times, unlike other engines that with hyperthreading show higher node count but play weaker.

Question: If Vas LOST Rybka 3 Sources, Then how the Hell did he write Rybka 4 so fast. That is a hell of allot of code for a very strong program.