Search found 1020 matches

by BubbaTough
Wed Jul 18, 2007 10:56 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: caps->noncaps vs. goodcaps->noncaps->badcaps
Replies: 22
Views: 9882

Re: caps->noncaps vs. goodcaps->noncaps->badcaps

I use Tord Scheme 1...which (last time I checked) works best for me in both tactics and practice. Of course, I do a lot of weird reductions / extensions / pruning so I doubt my experiences generalizes as well as more "normal" (better) engines like Hyatt and Tord built. In terms of non-tactical test ...
by BubbaTough
Tue Jul 17, 2007 11:54 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: ACCA Challenge match Saturday on ICC
Replies: 4
Views: 2443

Re: ACCA Challenge match Saturday on ICC

Thanks James (about saying Lemming has come a long way). As many predicted, losing the code was somewhat of a blessing, as the new code base is much better (less bugs, easier to try new things, etc.). The upcoming World Computer Rapid Chess Championships should be a good test for it (loving the 14 r...
by BubbaTough
Thu Jul 12, 2007 5:27 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: An interesting search reduction!
Replies: 6
Views: 3869

Re: An interesting search reduction!

This is a good (as in interesting) idea. I would guess most of the time it neither helps nor hurts, but when it is active (such as during piece shuffling) it helps. Since piece shuffling is pretty annoying, this change may have more esthetic benefits than strength benefits. questions: a) how are you...
by BubbaTough
Fri May 11, 2007 3:16 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: About pawn hash tables
Replies: 6
Views: 7048

Re: About pawn hash tables

Why not just hash 2 values, endgame_score and opening_score, and then keep everything else the same.

-Sam
by BubbaTough
Mon May 07, 2007 7:23 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Advice on stabalizing the eval needed
Replies: 11
Views: 12381

Re: Advice on stabalizing the eval needed

Well, I think you are going down an interesting path, and encourage you to continue. In my old code-base I tried something a bit different for learning eval, and had a hand-chosen min/max for eval characteristics (so learned values could not go crazy and get too low / high). I was never super enamor...
by BubbaTough
Fri Apr 13, 2007 6:23 pm
Forum: Computer Chess Club: General Topics
Topic: 6 piece EGTB
Replies: 3
Views: 3374

6 piece EGTB

Hi,

My homeland security officer (wife) has banned EMULE use. Does anyone know a place I can download 6 piece EGTBs from without it? I found KBPKNP to test my young engine with (it seems to work) but am now eager for more.

-Sam
by BubbaTough
Wed Apr 11, 2007 3:45 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: LearningLemming jumps off a cliff and dies
Replies: 15
Views: 22332

Re: LearningLemming jumps off a cliff and dies

LearningLemming is being rebuilt...slowly because of a heavy work schedule. I am taking the opportunity to make a more elegant move gen and eval structure, though maybe not better. The new version should not be as dependent on lazy eval, which will allow for a less materialistic style of play. I may...
by BubbaTough
Tue Apr 03, 2007 1:06 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: LearningLemming jumps off a cliff and dies
Replies: 15
Views: 22332

Re: LearningLemming jumps off a cliff and dies

I had a backup, the backup got reformatted (and windows installed over) in the same process that the main drive got reformatted (and windows installed over) :oops:. I may have a really old version of the code floating around (probably with hard to find hash table bugs and such) on a USB key or somet...
by BubbaTough
Mon Apr 02, 2007 11:28 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: LearningLemming jumps off a cliff and dies
Replies: 15
Views: 22332

LearningLemming jumps off a cliff and dies

Unfortunately, the harddrive holding learninglemming source code has been reformatted...shortly after finishing 29/31 in a tournament for young and foolish chess programs. http://webs.ono.com/smg29/qualify.htm Now to decide whether my suicidal program should be rebuilt, or is better off dead :cry: .
by BubbaTough
Fri Mar 30, 2007 12:07 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: SEE on non-capture moves in main search
Replies: 62
Views: 80816

Re: SEE on non-capture moves in main search

Ed,

you said piece-square stuff helps you. How do you combine this with the history heuristic? Or do you not use that?

-Sam