Search found 495 matches

by Robert Pope
Fri Aug 20, 2021 9:03 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: tablebase neural nets
Replies: 8
Views: 3994

Re: tablebase neural nets

Hey, Connor, I've tried to do some reading on the NNUE HalfKA architecture, but I'm struggling a bit. Could you explain what the format of the inputs are to this net? Chessprogramming.org says it's 12x64x64 = 45,056 (actually, that must be 11x64x64) times two. I get the 12 pieces, but I don't see w...
by Robert Pope
Thu Aug 19, 2021 3:10 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: tablebase neural nets
Replies: 8
Views: 3994

Re: tablebase neural nets

Hey, Connor, I've tried to do some reading on the NNUE HalfKA architecture, but I'm struggling a bit. Could you explain what the format of the inputs are to this net? Chessprogramming.org says it's 12x64x64 = 45,056 (actually, that must be 11x64x64) times two. I get the 12 pieces, but I don't see wh...
by Robert Pope
Sun Aug 08, 2021 1:29 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: tablebase neural nets
Replies: 8
Views: 3994

Re: tablebase neural nets

Thanks, I'll take a look at that. I guess there were two reasons I was trying to predict dtz instead of wdl: 1. I was starting from the ground up and KRK is 100% won, so predicting wdl isn't very useful. 2. Knowing a position is won doesn't translate into being able to force the mate. If you have a ...
by Robert Pope
Sat Aug 07, 2021 10:11 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: tablebase neural nets
Replies: 8
Views: 3994

tablebase neural nets

Does anyone have experience building their own neural nets to duplicate endgame databases? The only thing close I can think of is dkappe's ender nets, but those are based on lc0's architecture, plus they were training on self-play rather than tablebases. I decided to give it a try and see how far I ...
by Robert Pope
Thu Oct 22, 2020 11:42 pm
Forum: Computer Chess Club: General Topics
Topic: CTF Survey - Finished. Results in final post.
Replies: 74
Views: 25833

Re: CTF Survey

2. CTF should be closed
by Robert Pope
Fri Jul 31, 2020 10:56 pm
Forum: Computer Chess Club: General Topics
Topic: games with material balance
Replies: 6
Views: 2235

Re: games with material balance

This is so much cleaner than what I had been trying to do - Thank you! Following up on this, I ended up adding code to Abbess to pull the selection of pgn files I wanted - pgn games truncated to where a certain number of pieces are left. However, I actually only want games that are still in progress...
by Robert Pope
Thu Jul 30, 2020 3:39 am
Forum: Computer Chess Club: General Topics
Topic: games with material balance
Replies: 6
Views: 2235

Re: games with material balance

Following up on this, I ended up adding code to Abbess to pull the selection of pgn files I wanted - pgn games truncated to where a certain number of pieces are left. However, I actually only want games that are still in progress, i.e. no games ending in checkmate or draw. pgn-extract has --checkmat...
by Robert Pope
Tue Jul 07, 2020 12:14 am
Forum: Computer Chess Club: General Topics
Topic: games with material balance
Replies: 6
Views: 2235

games with material balance

I'm trying to filter pgn files for certain endings, except I want the PGN to be truncated once that ending is reached (e.g. KQRKB). pgn-extract -z mat_kqrkb.txt -D -o kqrkb.pgn 1.pgn 2.pgn 3.pgn will find the KQRKB games, but it gives the full pgn of the game, rather than stopping once KQRKB is reac...
by Robert Pope
Sun Jul 05, 2020 11:26 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Throwing out draws to calculate Elo
Replies: 214
Views: 25488

Re: Throwing out draws to calculate Elo

Elo figures are already correctly reported with +/- Elo error bounds. There is no need to ask the Stockfish developers to truncate anything. However, if they are using LOS in fishtest, they should be warned that they are tuning Stockfish with a uniform PRNG (given enough games) It's only a uniform ...
by Robert Pope
Mon Jun 15, 2020 1:58 am
Forum: Computer Chess Club: General Topics
Topic: FEN to PGN
Replies: 1
Views: 923

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?