Search found 3747 matches

by jdart
Tue Jan 28, 2020 4:09 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: hash collisions
Replies: 10
Views: 451

hash collisions

It is pretty well known now that with the common 64-bit hash codes in use for A-B engines, hash collisions are rare but certainly do occur. On a very big machine with a lot of threads they may even start to be frequent. Engines protect themselves from this in various ways, mostly pretty effective. I...
by jdart
Sat Jan 25, 2020 7:39 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: mmt Vs. Ovyron (G4 D5 BG2)
Replies: 51
Views: 1691

Re: mmt Vs. Ovyron (G4 D5 BG2)

Playing games also throws out huge chunks of the search tree.
Yes, it does, but with each move the horizon is pushed out farther.
by jdart
Sat Jan 25, 2020 7:07 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: mmt Vs. Ovyron (G4 D5 BG2)
Replies: 51
Views: 1691

Re: mmt Vs. Ovyron (G4 D5 BG2)

IMO game play (especially with learning of past results) is a more reliable testing method that trying to do search from the root position, even with a very strong engine or at long time control. I think there are many cases where it is difficult to get the "truth" of an opening from such a search. ...
by jdart
Sun Jan 19, 2020 11:00 pm
Forum: Computer Chess Club: General Topics
Topic: a crying shame (re: self-learning engines)
Replies: 20
Views: 1148

Re: a crying shame (re: self-learning engines)

Arasan has "permanent brain" (keeps a file of positions/scores for later use). It only works in xboard mode presently. It is effective. It does give a positive ELO gain in matches. But it is not magic and it won't boost Arasan's score way above engines that are already well above its strength. If an...
by jdart
Sat Jan 18, 2020 3:10 pm
Forum: Computer Chess Club: General Topics
Topic: InfinityChess Forum
Replies: 13
Views: 1925

Re: InfinityChess Forum

I think quite a few engine players on playchess are also active on InfinityChess.

I couldn't get the InfinityChess client software to work on my system. I downloaded it and the installer doesn't run.

--Jon
by jdart
Thu Jan 16, 2020 4:59 am
Forum: Computer Chess Club: General Topics
Topic: 1.g4 opening is losing?
Replies: 79
Views: 7100

Re: 1.g4 opening is losing?

Permanent hash would have a similar effect.
by jdart
Wed Jan 15, 2020 7:36 pm
Forum: Computer Chess Club: General Topics
Topic: 1.g4 opening is losing?
Replies: 79
Views: 7100

Re: 1.g4 opening is losing?

Newest T60 Leela network gives eval of -73% for after 1 Million node search (a bit over a minute on 2080ti). If 1.g4 is losing it's interesting to ponder if openings like Benoni or Mar del Plata King's Indian variation are losing as well. If you play around a bit you get around 65% for white in tho...
by jdart
Wed Jan 15, 2020 3:02 pm
Forum: Computer Chess Club: General Topics
Topic: 1.g4 opening is losing?
Replies: 79
Views: 7100

Re: 1.g4 opening is losing?

The book was "seeded" with a set of a-priori move statistics. So not starting from zero. My idea was I could use this as a book that added some learning (both online and offline) to what the book currently had. Since the book already is decently tuned, adding very short-time control games or shallow...
by jdart
Tue Jan 14, 2020 2:48 pm
Forum: Computer Chess Club: General Topics
Topic: 1.g4 opening is losing?
Replies: 79
Views: 7100

Re: 1.g4 opening is losing?

Sounds like a weak move selection algorithm, or not using all the knowledge you have available, or too high expectation of the learning rate, or a combination of all three. I'm kind of curious what was the time controls you were using? I think this plays a huge role in learning rate per unit time s...
by jdart
Tue Jan 14, 2020 3:54 am
Forum: Computer Chess Club: General Topics
Topic: Bin book adapter?
Replies: 26
Views: 3042

Re: Bin book adapter?

I can't even get the InfinityChess app to properly install on WIndows 10. And I assume if you are not on Windows, you are out of luck.

--Jon