Search found 3426 matches

by Sven
Tue Aug 26, 2008 11:15 pm
Forum: Computer Chess Club: General Topics
Topic: Here's something to start with
Replies: 11
Views: 4570

Re: Here's something to start with

Norman, on the left side you show Fruit 2.1 code. What is at the right side? "start_go" is the name of a Strelka 2.0 function. Are you showing Strelka 2.0, or one of many possible Rybka C sources after decompiling Rybka 1.0 beta and choosing a mixture of Fruit and Strelka identifiers? 10 // the foll...
by Sven
Mon Aug 25, 2008 10:28 pm
Forum: Computer Chess Club: General Topics
Topic: Rybka 1.0 vs. Strelka
Replies: 568
Views: 135057

Re: Wanted: some opposition to the provided evidence

I would normally be happy to stick it up here, but we have been having serious problems for weeks, to the point that I often find it impossible to establish a connection from my home without it hanging. People are complaining all over, but the cause is presently unknown (but probably some sort of v...
by Sven
Mon Aug 25, 2008 10:00 pm
Forum: Computer Chess Club: General Topics
Topic: Rybka 1.0 vs. Strelka
Replies: 568
Views: 135057

Re: Wanted: some opposition to the provided evidence

It might be worthwhile at some point to try to compile it with certain compilers and see if the instruction scheduling etc. match up with the binary, but I haven't done it yet. Regarding different compilers, maybe it will be sufficient for you to concentrate on MSVC++ (probably 2005), as Rybka 1.0 ...
by Sven
Mon Aug 25, 2008 9:41 pm
Forum: Computer Chess Club: General Topics
Topic: Rybka 1.0 vs. Strelka
Replies: 568
Views: 135057

Re: Wanted: some opposition to the provided evidence

[...]The code is not identical. The similar parts that have been demonstrated are all trivial anyway. If you read the thread that I just posted ("Questions for Vas") and still believe that, then I would have to seriously question your expertise on the matter. How many engines do you know that store...
by Sven
Mon Aug 25, 2008 4:30 pm
Forum: Computer Chess Club: General Topics
Topic: Rybka 1.0 vs. Strelka
Replies: 568
Views: 135057

Re: Wanted: some opposition to the provided evidence

This just makes the source harder to read, just as if you went in with an editor and changed every variable name to something like a1111, a1112, a1113, etc... [...] But that requires that one believe that these two lines are different: Maybe my post could be misunderstood such that I would focus on...
by Sven
Mon Aug 25, 2008 2:31 pm
Forum: Computer Chess Club: General Topics
Topic: Rybka 1.0 vs. Strelka
Replies: 568
Views: 135057

Re: Wanted: some opposition to the provided evidence

If Christophe or any other commercial programer wanted the source code of Rybka 3 they'd disassemble it. It's not that hard. Just to get the wordings correct ... 1) "Disassembling" (as also used by some others in this thread) only refers to converting the binary program into assembler instructions,...
by Sven
Wed Aug 20, 2008 6:54 pm
Forum: Computer Chess Club: General Topics
Topic: FIDE rules expert wanted!
Replies: 29
Views: 5431

Re: FIDE rules expert wanted!

hgm wrote:If black claims a draw in KNNK, it is a false claim, but because the opponent is bare, he still has a draw.
I think you mean "If white claims ...".

Sven
by Sven
Wed Aug 13, 2008 2:37 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Repetition Detection
Replies: 28
Views: 9319

Re: Repetition Detection

Hi, my engine doesn't do repetition detection, and often falls into endless loop when it plays against itself or another engine. I use a transposition table and iterative deepening, QS, and rotated bitboards, but don't use Null Move Pruning or anything else. Is there a standard way to check for rep...
by Sven
Wed Aug 13, 2008 1:58 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: TogaII bug
Replies: 7
Views: 2246

Re: TogaII bug

I think you find the same pawn but rank is different. Borko Not if you change bitfirst to bitlast AND do a bitreverse. Your idea seems correct but since you correct it double, it gives exactly the same as before. Tony I would like to say how I understand the code. board->pawn_file[me][file] shows p...
by Sven
Wed Aug 13, 2008 12:44 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: testing, 2 complete runs now...
Replies: 37
Views: 6650

Re: testing, 3[code] complete runs now...

It appears to be a difficult task to measure small changes. Crafty's rating varies from -16 to -21, which is more noise than what I am actually hoping to measure... might be a hopeless idea to try to measure very small changes in strength. stopped typing too soon. My main issue with the above is th...