Search found 431 matches

by brtzsnr
Thu Jan 24, 2019 9:01 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Linux friendly engines at all levels
Replies: 24
Views: 2118

Re: Linux friendly engines at all levels

You can pick one of the older versions of Zurichess. Binaries here: http://www.zurichess.xyz/downloads/

The last version is close to 2900, but previous versions are in the desired Elo range.
by brtzsnr
Wed Jan 16, 2019 4:02 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: MCTS: How to deal with extreme imbalances
Replies: 6
Views: 812

Re: MCTS: How to deal with extreme imbalances

I think that the best way is to change the scoring system so mate in 200 moves is worse than mate in 100 moves. For example winning give the winning side 1-0.0001*number of moves and the losing side 0.0001*number of moves. In this case mate in 100 gives 0.99 points and mate in 200 gives 0.98 points...
by brtzsnr
Wed Jan 16, 2019 12:32 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: MCTS: How to deal with extreme imbalances
Replies: 6
Views: 812

MCTS: How to deal with extreme imbalances

Consider this position https://lichess.org/KOImYPTl#60 which is highly favorable for white. [D] R7/2B4p/1p2k1p1/8/1Pp3p1/2Q3P1/1P2PP1P/5RK1 w - - 6 31 The game is between two instances of zurichess mcts (less_than_one). Once the game reaches this extreme imbalance the engine moves aimlessly because ...
by brtzsnr
Fri Dec 21, 2018 9:45 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: On-line engine blitz tourney December
Replies: 18
Views: 1492

Re: On-line engine blitz tourney December

Hi!

Can I get a new account for my new engine, less_than_one? https://lichess.org/@/less_than_one
by brtzsnr
Wed Dec 05, 2018 11:35 pm
Forum: Computer Chess Club: General Topics
Topic: less_than_one
Replies: 0
Views: 648

less_than_one

Hi folks! I had some free time so I jumped the MCTS wagon. I have a version that is currently running at https://lichess.org/@/less_than_one. This version is weak, I had to start with evaluation from scratch. The engine uses dc.bin from http://rebel13.nl/download/books.html. If you have time, please...
by brtzsnr
Mon Oct 22, 2018 9:56 pm
Forum: Computer Chess Club: General Topics
Topic: Zurichess Nidwalden
Replies: 9
Views: 1568

Re: Zurichess Nidwalden

I remember that I posted some different binaries here: http://talkchess.com/forum3/viewtopic.php?f=7&t=65886&p=740729&hilit=zurichess#p740729 I was hoping to get some input from the community. It's a different search, built from ground zero using evolutionary algorithms. I only guided the search a b...
by brtzsnr
Mon Oct 22, 2018 9:32 pm
Forum: Computer Chess Club: General Topics
Topic: Zurichess Nidwalden
Replies: 9
Views: 1568

Re: Zurichess Nidwalden

That is not true. Overall the new binary searches 10% faster. Otherwise, the logic is similar.

The binary is built with the latest version of Go (1.11 vs 1.9), plus some inline funtions calls tweaking.
by brtzsnr
Sat Dec 02, 2017 7:13 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: need some help assessing the evaluation
Replies: 5
Views: 1231

Re: need some help assessing the evaluation

Thank you, Alvaro!
Thank you, Jonathan!

If you prefer a linux binaries you can use these two links

Eve http://www.zurichess.xyz/binaries/eve-linux-amd64
Matt http://www.zurichess.xyz/binaries/matt-linux-amd64
by brtzsnr
Sat Dec 02, 2017 11:19 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: need some help assessing the evaluation
Replies: 5
Views: 1231

Re: need some help assessing the evaluation

Hmmm Matt sounds like 'material and 'eve' like 'eval' :) I will try to collect test games and look at them, but not before next weekend. Not quite. zurichess is about 2800 or CCRL 40/40 so the eval is more complicated than "material" only. How much is the speed/depth diff in your measurements so fa...
by brtzsnr
Sat Dec 02, 2017 11:12 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: how to create a labeled epd from pgn?
Replies: 7
Views: 1377

Re: how to create a labeled epd from pgn?

Given a set of PGNs I use the following command (works on my Debian) cat ok/pgn-split.* | grep "FEN\|Result\|ECO" | tac | paste - - -d' ' | grep -v ECO | sed 's/\[FEN "//' | sed 's/0 1"\] \[Result/c9/' | sed 's/\]/;/' > quiet-labeled.epd Let's split: cat ok/pgn-split.* just concatenates everything g...