Search found 4213 matches

by lkaufman
Mon Jan 25, 2010 3:28 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: RobboLito ... IvanHoe v70 tables, values
Replies: 1
Views: 950

Re: RobboLito ... IvanHoe v70 tables, values

Some are identical, such as queen attacking various pieces 2,5 or rook-king-eighth 5, 10, some are extremely close like rook-king-sixth 5,15 vs. my 4,16. I don't have the time or desire to go thru all this in detail and list all the many similarities unless someone wants to hire me to do this. I'd r...
by lkaufman
Sun Jan 24, 2010 4:06 am
Forum: Computer Chess Club: General Topics
Topic: Komodo - Rybka in Danger?
Replies: 183
Views: 41756

Re: Komodo - Rybka in Danger?

There is a difference between the questions of whether what the derivative-makers did was illegal and whether it is just dishonest/immoral. Perhaps they reverse-engineered the code, which I believe is not illegal, and then made their own program by modifying it. If it ever went to court, I suppose i...
by lkaufman
Sun Jan 24, 2010 1:53 am
Forum: Computer Chess Club: General Topics
Topic: Komodo - Rybka in Danger?
Replies: 183
Views: 41756

Re: Komodo - Rybka in Danger?

I can't even read RobboLito code myself, I'm not a programmer. I based my conclusion on an email from a reliable independent chess programmer (no connection to Don, me, or Rybka) who sent this king table he either found in or derived from an early Ippo version. He had no access to Rybka code himself...
by lkaufman
Sat Jan 23, 2010 9:59 pm
Forum: Computer Chess Club: General Topics
Topic: Komodo - Rybka in Danger?
Replies: 183
Views: 41756

Re: Komodo - Rybka in Danger?

PostPosted: Sat Jan 23, 2010 4:09 pm Post subject: Re: Komodo - Rybka in Danger? slobo wrote: "2. the presence of these tables is sufficient to call Ippolit derivates clones? 3. Is the evaluation funcion really Rybka's property or it was borrowed by Fruit?" Regarding point 2, I prefer to use the ter...
by lkaufman
Sat Jan 23, 2010 7:01 pm
Forum: Computer Chess Club: General Topics
Topic: Komodo - Rybka in Danger?
Replies: 183
Views: 41756

Re: Komodo - Rybka in Danger?

"I would like to know something: 1. If only you and Vas had the Rybka 3 code, how did the "cloners" managed to get it ? 2. If Rybka's code is alredy "stealed", why you and Vas don't present evidences that the "cloners" code and the Rybka 3 one is the same? " Reply: 1. I don't know, but I suppose th...
by lkaufman
Sat Jan 23, 2010 3:40 pm
Forum: Computer Chess Club: General Topics
Topic: Komodo - Rybka in Danger?
Replies: 183
Views: 41756

Re: Komodo - Rybka in Danger?

By "serious time limits" I mean time limits that are considered serious by human players, i.e. slow enough to count on human ratings. Of course if you are interested in just engine vs. engine play there is nothing special about 40/2 hours vs 40/4 minutes, but many human players either want to play a...
by lkaufman
Fri Jan 22, 2010 4:41 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Question for Bob Hyatt
Replies: 179
Views: 42630

Re: Question for Bob Hyatt

We're actually testing Uri's idea now. So far it's testing slightly but not significantly positive. So while I cannot say that it is a benefit, I can at least say that it appears not to be a bad idea.
by lkaufman
Fri Jan 22, 2010 5:26 am
Forum: Computer Chess Club: General Topics
Topic: Komodo - Rybka in Danger?
Replies: 183
Views: 41756

Re: Komodo - Rybka in Danger?

1. My actual employment with Rybka ended shortly after Rybka 3, basically because most of my easily-programmable chess knowledge was already in R3 and I found it difficult to improve the program just by tinkering with values, and Vas was just too busy to really work closely with me. I remain part of...
by lkaufman
Fri Jan 22, 2010 5:04 am
Forum: Computer Chess Club: General Topics
Topic: Komodo - Rybka in Danger?
Replies: 183
Views: 41756

Re: Komodo - Rybka in Danger?

Well, this stuff was made public by the clones, and anyway Vas had asked me to keep such general eval knowledge confidential for a year, and it's now been a year and a half. Still I won't reveal exact values of terms in R3 even if they are more or less public due to the clones (or "derivatives" if y...
by lkaufman
Fri Jan 22, 2010 4:39 am
Forum: Computer Chess Club: General Topics
Topic: Komodo - Rybka in Danger?
Replies: 183
Views: 41756

Re: Komodo - Rybka in Danger?

We have some hints that you are correct about move-ordering. If so, Komodo may turn out to be stronger than we think at serious time limits.