Just a curiosity of an amateur...

[Amateur]

Looking at the official website of Rybka chess, in the "Team" section, I noticed the presence of a name that more than others has given me wonder.
http://www.rybkachess.com/index.php?auswahl=Rybka+team
As everyone can imagine the name is Larry Kaufman, with role "Advisor" in the team...
What he did in practice Larry Kaufman in the Rybka team? In addition to his chess skills by "GM," has he participated in the programming? How much of his ability he did in the Rybka engine? What he led from Rybka to Komodo?
I'd like to get some answers, perhaps by the same Larry Kaufman, if possible ...

[Dann Corbit]

Larry Kaufman worked with Vas on the evaluation. While he did not write the code, he has enough familiarity with programming to be an excellent guide.

He now works with Mark on Komodo.

If you have not read Larry's article on material imbalances, it is a must read.

[rcmaddox]

Looking at the official website of Rybka chess, in the "Team" section, I noticed the presence of a name that more than others has given me wonder.
http://www.rybkachess.com/index.php?auswahl=Rybka+team
As everyone can imagine the name is Larry Kaufman, with role "Advisor" in the team...
What he did in practice Larry Kaufman in the Rybka team? In addition to his chess skills by "GM," has he participated in the programming? How much of his ability he did in the Rybka engine? What he led from Rybka to Komodo?
I'd like to get some answers, perhaps by the same Larry Kaufman, if possible ...

Here's an interview from 2008 when LK won the World Senior Championship. Part of the interview deals with his contribution to Rybka.

Look here ---->> http://www.uschess.org/content/view/8982/500/

[Amateur]

Thank you!

[mjlef]

Larry posts here pretty often, or I can pass on a question to him if you want.

Larry has been involved in computer chess since the 1960's when he wrote the opening book for Mac Hack IV. You can find out more about Larry's computer chess work here:

https://chessprogramming.wikispaces.com/Larry+Kaufman

Larry worked on the evaluation of some of the later Rybka 2 (2.3.2a, for example) and Rybka 3.

I am fortunate to be able to work with Larry just about every day.

Mark

[reflectionofpower]

Larry Kaufman worked with Vas on the evaluation. While he did not write the code, he has enough familiarity with programming to be an excellent guide.

He now works with Mark on Komodo.

If you have not read Larry's article on material imbalances, it is a must read.

http://www.danheisman.com/evaluation-of ... ances.html

[Amateur]

The linked material is very interesting and meets all my curiosity!
Is out of the question the fact that since in the Komodo team arrived M. Lefler the engine performance came at very high levels... now i have only a question: how much of the experience gained in the Rybka team was sent into the development of Komodo engine?
Thanks for your answers!

[mjlef]

The linked material is very interesting and meets all my curiosity!
Is out of the question the fact that since in the Komodo team arrived M. Lefler the engine performance came at very high levels... now i have only a question: how much of the experience gained in the Rybka team was sent into the development of Komodo engine?
Thanks for your answers!

Larry developed the evaluation function in later Rybka 2.x and 3.x versions. Komodo started of as Don's program Doch. Larry later joined up with Don and improved the evaluation function (and search too) so the basic chess principals Larry has written about and taught for many years became part of both programs. Of course, humans learn more so by the time Larry was working on Komodo, he knew more about possibly effective evaluation terms.

Doch started off as a simple program, but by the time I worked on Komodo, it has a full fledged evaluation function which Larry and I have continued adding to and refining.

[Amateur]

The linked material is very interesting and meets all my curiosity!
Is out of the question the fact that since in the Komodo team arrived M. Lefler the engine performance came at very high levels... now i have only a question: how much of the experience gained in the Rybka team was sent into the development of Komodo engine?
Thanks for your answers!

Larry developed the evaluation function in later Rybka 2.x and 3.x versions. Komodo started of as Don's program Doch. Larry later joined up with Don and improved the evaluation function (and search too) so the basic chess principals Larry has written about and taught for many years became part of both programs. Of course, humans learn more so by the time Larry was working on Komodo, he knew more about possibly effective evaluation terms.

Doch started off as a simple program, but by the time I worked on Komodo, it has a full fledged evaluation function which Larry and I have continued adding to and refining.

thanks for the clear explanation.