Search found 167 matches

by OliverUwira
Wed Feb 08, 2012 12:30 pm
Forum: Computer Chess Club: General Topics
Topic: Rybka 1.0 source code
Replies: 163
Views: 37112

Re: Rybka 1.0 source code

Yes. He says he does not have it any longer hence the surrogate. Sorry, I didn't know that. So what about the next closest (less different) source code that he keeps? I don't think it can bring him much trouble because it would be an old version and, disgracefully, all Rybka insights have already b...
by OliverUwira
Tue Feb 07, 2012 7:17 pm
Forum: Computer Chess Club: General Topics
Topic: Does anyone have analyses/theory in this position?
Replies: 46
Views: 6081

Re: Does anyone have analyses/theory in this position?

Interesting stuff. I'm writing this without any engine assistence (have none at the office) but even unverified comments might give good cues... An important thing to notice is that 6...h5 weakens g6. So how about 7. Qf3 with the idea of 7...Nf2 8. Qg3 - now 8...Nxh1 9. Qxg7 Rf8 10. Bg5 looks like ...
by OliverUwira
Tue Feb 07, 2012 6:57 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: help this guy
Replies: 15
Views: 2739

Re: help this guy

Reminds me of a program I wrote when I was a kid and starting to learn programming. It was meant to count the frequency of letters in a text, but I had no concept of dynamic indexing into an array so there was a huge switch with a different case for 'a', 'A', 'b', 'B' etc... On the plus side, the f...
by OliverUwira
Tue Feb 07, 2012 4:55 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: help this guy
Replies: 15
Views: 2739

Re: help this guy

http://www.codeguru.com/forum/showthread.php?t=520797 It could be a new addition to the list of swedish (I think) engines when finished. He probably hasn't found CCC yet from what I saw in his code. His bitToIndex function is map<unsigned __int64, unsigned __int64> _bitToIndex, _indexToBit; //_bitT...
by OliverUwira
Tue Feb 07, 2012 4:42 pm
Forum: Computer Chess Club: General Topics
Topic: Does anyone have analyses/theory in this position?
Replies: 46
Views: 6081

Re: Does anyone have analyses/theory in this position?

Hi, But what if black plays 6...h5! ? [d]rnbqk2r/ppp2pp1/3p4/2b1pP1p/2B1P1n1/2NP4/PPP3PP/R1BQK1NR w KQkq 7. Nh3 seems obvious. I thought 7. Nh3 would suck because of 7...Qh4+ when White can't play 8. g3. Therefore after 7...Qh4+ Black must move the king, this time around without any compensation. T...
by OliverUwira
Tue Feb 07, 2012 1:44 pm
Forum: Computer Chess Club: General Topics
Topic: Does anyone have analyses/theory in this position?
Replies: 46
Views: 6081

Re: Does anyone have analyses/theory in this position?

Interesting stuff. I'm writing this without any engine assistence (have none at the office) but even unverified comments might give good cues... An important thing to notice is that 6...h5 weakens g6. So how about 7. Qf3 with the idea of 7...Nf2 8. Qg3 - now 8...Nxh1 9. Qxg7 Rf8 10. Bg5 looks like a...
by OliverUwira
Tue Jan 31, 2012 8:24 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Bibob
Replies: 6
Views: 1181

Re: Bibob

Gerd Isenberg wrote:
OliverUwira wrote:Bitboardbeobachter, eh?
Yes, BitBoard Observer ;-)
English and German appear compatible on this one, despite different word roots :lol:
by OliverUwira
Tue Jan 31, 2012 7:03 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Bibob
Replies: 6
Views: 1181

Re: Bibob

Hello Gerd.

that's an awesome tool. Bitboardbeobachter, eh? Many thanks for sharing it.

I'm very much looking forward to using it. Up until now I always made do with the programmer view of Windows' calc.exe and primitive debug outputs... :roll:
by OliverUwira
Mon Jan 23, 2012 12:25 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Approaches to king safety?
Replies: 52
Views: 13021

Re: Approaches to king safety?

We have found that attacks are much more important than defenses. In fact we have had a difficult time making defense bonuses work for us even though logically it should. I am sure we could improve on this substantially or may be missing some important principle. The reason may be that it's difficu...
by OliverUwira
Wed Oct 05, 2011 6:55 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: multi-player games thoughts
Replies: 34
Views: 4337

Re: multi-player games thoughts

From what I understood so far, paranoid is worst possible case and maxn disregards other opponents entirely. So all strategies are mixes of these two. If the eval tuple is say (a,b,c) Paranoid player a's matrix +1 0 0 -1 0 0 -1 0 0 So player a's score = a - (b + c) Maxn player's matrix 1 0 0 0 1 0 ...