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by lkaufman
Thu Feb 24, 2011 1:20 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Attack and mobility evaluation in chess variants
Replies: 7
Views: 1516

Re: Attack and mobility evaluation in chess variants

I have never tried mobility evaluation, so none of what I am going to say is substantiated by experiment. But I have always had the feeling captures in normal Chess should not be counted as mobility. If they are good captures, it doesn't really matter if you count them or not, because the current e...
by lkaufman
Sun Feb 13, 2011 6:20 am
Forum: Computer Chess Club: General Topics
Topic: What the computer chess community needs to decide
Replies: 265
Views: 64527

Re: What the computer chess community needs to decide

That would be an excellent idea. The stronger Houdini is, the more depressed Vas, Larry&co are going to be. As a competitor, it is true that a stronger Houdini saddens me. On the other hand, as an active user, any new stronger #1 engine brings me happiness. I'm not sure which effect is stronger. I ...
by lkaufman
Sun Feb 13, 2011 3:28 am
Forum: Computer Chess Club: General Topics
Topic: a Telltale position
Replies: 97
Views: 43081

Re: a Telltale position

[quote="michiguel" In my case, I think I cannot improve it by tuning the parameters. I bet that if I try, I will make it weaker (it is not that simple without messing up everything else). Most likely, I am missing a parameter, which may not be the same. That is true in science too (and it may have b...
by lkaufman
Sat Feb 12, 2011 9:43 pm
Forum: Computer Chess Club: General Topics
Topic: a Telltale position
Replies: 97
Views: 43081

Re: a Telltale position

I never said that Robbolito was akin to Rybka 2.3.2. I said that the easiest Rybka to disassemble was Rybka 2.3.2b (the tuning/programmable/leaked one) because the symbols had not been stripped and that it is my belief that was what was used to create Ippolit..... (please note Ippolit). I know, but...
by lkaufman
Sat Feb 12, 2011 8:38 pm
Forum: Computer Chess Club: General Topics
Topic: a Telltale position
Replies: 97
Views: 43081

Re: a Telltale position

[d]rn1q1r2/p1p1ppkp/1p4p1/8/2BP4/2N2N2/PP3PPP/R1B1K2R b KQ - 0 11 Houdini 1.0 x32 : 1/3 00:00 30 0 -8.70 Qxd4 Nxd4 (this bit is very funny indeed) :lol: Chris Hmm, what you quote funny (Qxd4 Nxd4) looks very reasonable to me, and I would expect every engine reporting each fail high at the root that...
by lkaufman
Sat Feb 12, 2011 8:31 pm
Forum: Computer Chess Club: General Topics
Topic: a Telltale position
Replies: 97
Views: 43081

Re: a Telltale position

How do the games from that position end, it would be interesting for some test games between the so called Ippo clones and the traditional other strong engines.A wrong evaluation would show up in game results.Sometimes I think Human evaluations are not necessary the absolute truth.I also imagine th...
by lkaufman
Sat Feb 12, 2011 7:17 pm
Forum: Computer Chess Club: General Topics
Topic: a Telltale position
Replies: 97
Views: 43081

a Telltale position

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 b6 8. e5 Be6 9. exf6 Bxc4 10. fxg7 Kxg7 11. Bxc4. Consider the above opening sequence, leading to the material imbalance of two bishops and a knight for queen and pawn. The move 7...b6?! is rarely played by Grandmasters because th...
by lkaufman
Sat Feb 12, 2011 6:25 pm
Forum: Computer Chess Club: General Topics
Topic: What the computer chess community needs to decide
Replies: 265
Views: 64527

Re: What the computer chess community needs to decide

Even if I didn't believe Houdini started as disassembled code, it is accepted that ideas from other programs may be used, but not code or numerical tables. If someone has learned of some new ideas by disassembly and is willing to share these ideas with the community, we all benefit together. We jus...
by lkaufman
Sat Feb 12, 2011 5:20 pm
Forum: Computer Chess Club: General Topics
Topic: What the computer chess community needs to decide
Replies: 265
Views: 64527

Re: What the computer chess community needs to decide

Since I am convinced that Houdini started life as a near-clone of a program made from disassembled Rybka code, I see nothing wrong with asking what other people have learned from disassembling Houdini code. So your personal conviction that somebody else has disassembled Rykba 3 gives you the right ...
by lkaufman
Sat Feb 12, 2011 4:23 pm
Forum: Computer Chess Club: General Topics
Topic: What the computer chess community needs to decide
Replies: 265
Views: 64527

Re: What the computer chess community needs to decide

I am not trash-talking you. Yes, you are. Your incessant suggestions about Houdini are effective trash-talk. Since I can't disassemble code and Don has no interest in doing so, the only way to get answers to this question is to ask others who have done so or to ask you directly. This has been a con...