Search found 486 matches

by Robert Pope
Mon Jun 15, 2020 1:58 am
Forum: Computer Chess Club: General Topics
Topic: FEN to PGN
Replies: 1
Views: 107

FEN to PGN

Is there a program out there that will take a FEN position and attempt to generate a legal game that reaches that position?
by Robert Pope
Tue Jun 09, 2020 1:50 am
Forum: Computer Chess Club: General Topics
Topic: Leela and the curse of not finishing a won match cleanly.
Replies: 11
Views: 888

Re: Leela and the curse of not finishing a won match cleanly.

What about
3. By playing an extra 100 pointless moves, it will occasionally wander into positions where an AB searcher can find a drawing continuation, turning a won game into a draw.
by Robert Pope
Sat Apr 25, 2020 1:19 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Null move
Replies: 5
Views: 1110

Re: Null move

Thanks for the explanation. I don't think I ever had eval as one of the criteria, and that appears to add 30 elo in my initial tests.
by Robert Pope
Fri Apr 24, 2020 8:09 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Null move
Replies: 5
Views: 1110

Null move

So, I've always struggled to get a null move search that gives me positive results. I decided to look at the rules that Stockfish uses and see the following: // Step 9. Null move search with verification search (~40 Elo) 1 if ( !PvNode 2 && (ss-1)->currentMove != MOVE_NULL 3 && (ss-1)->statScore < 2...
by Robert Pope
Thu Mar 26, 2020 1:01 am
Forum: Computer Chess Club: General Topics
Topic: Stockfish Polyglot now violates the GPL
Replies: 23
Views: 3244

Re: Stockfish Polyglot now violates the GPL

The only way they have of communication requires giving them my email and I don't even know if they'd sell it or whatever. It isn't rocket science to share the source (they chose to NOT include it with the compiles and to NOT update their github), so it's clear they preferred to have a closed Stock...
by Robert Pope
Wed Mar 25, 2020 1:38 am
Forum: Computer Chess Club: General Topics
Topic: Stockfish Polyglot now violates the GPL
Replies: 23
Views: 3244

Re: Stockfish Polyglot now violates the GPL

Did you ask for the source and were refused? GPL doesn't require source to be published on the web, just provided on request.
by Robert Pope
Tue Mar 24, 2020 4:01 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Poor mans testing process please
Replies: 30
Views: 3755

Re: Poor mans testing process please

Even with an old machine, you can still easily run 1000-2000 fast-ish games (e.g. 5s + 0.2s) overnight. That won't prove out <3 elo improvements, but it will validate many good patches and flag bad ones.
by Robert Pope
Mon Jan 20, 2020 3:50 pm
Forum: Computer Chess Club: General Topics
Topic: Dumping a search tree
Replies: 1
Views: 452

Dumping a search tree

Are there any engines besides a special compile of Crafty (trace command) that will output a tree search to screen/disk?
by Robert Pope
Tue Oct 15, 2019 7:18 pm
Forum: Computer Chess Club: General Topics
Topic: New engine: Mora
Replies: 25
Views: 7163

Re: New engine: Mora

"MORA" doesn't actually stand for anything, it is just the name of my cat who was happen to be at my desk when I started to code, so I decided to name the engine in her honor haha. Does anyone else find this explanation sort of... regressive? I'm not sure I follow. What's wrong with naming my engin...
by Robert Pope
Tue Oct 15, 2019 5:01 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Understanding and Pushing the Limits of the Elo Rating Algorithm
Replies: 7
Views: 2079

Re: Understanding and Pushing the Limits of the Elo Rating Algorithm

How did they miss our work Paired Comparisons with Ties ? We compared three draw models and found out Davidson fits chess data best -- which they reframed as their own K-elo if I am not mistaken. Maybe I should alert the authors to our paper and makes them spell out what their unique contribution. ...