Search found 806 matches

by pedrox
Fri Oct 25, 2019 11:39 am
Forum: Computer Chess Club: General Topics
Topic: New engine releases 2019
Replies: 395
Views: 100001

Re: New engine releases 2019

Updated DanaSah to version 8.3

https://sites.google.com/site/danasah/
by pedrox
Fri Oct 11, 2019 4:27 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Looking for TT policy advice
Replies: 28
Views: 4186

Re: Looking for TT policy advice

xr_a_y wrote:
Fri Oct 11, 2019 2:54 pm

Code: Select all

struct Entry{
    Move m; //int
    Hash h; // int64
    ScoreType score, eval; //short int
    Bound b; // char
    DepthType d; // signed char
    short int generation;
};
This is not 20 bytes?

4 + 8 + 2 + 2 + 1 + 1 + 2 = 20
by pedrox
Mon Sep 16, 2019 10:21 am
Forum: Computer Chess Club: General Topics
Topic: UCI_Elo
Replies: 60
Views: 8754

Re: UCI_Elo

Run a new RR with uci elo 1500 engines at TC 60s+100ms. New engines are Rybka, Rodent, Danasah with engine opponent setting, new version of Stockfish and my new engine version. Thanks for testing DanaSah. I have a new version (beta) with limited strength, I think I didn't publish it here. If you do...
by pedrox
Mon Sep 16, 2019 9:50 am
Forum: Computer Chess Club: General Topics
Topic: UCI_Elo
Replies: 60
Views: 8754

Re: UCI_Elo

Any advice to tune engine parameters to correspond to the right UCI_Elo value ? In Cheese I have 2 parameters, one to make very small pauses every N nodes, and another one to add randomness to the evaluation under 2000 ELO. If we cannot find a reference engine and corresponding UCI_Elo value we mig...
by pedrox
Sat Sep 14, 2019 11:12 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: New Tool for Tuning with Skopt
Replies: 60
Views: 8582

Re: New Tool for Tuning with Skopt

Once I have played a series of games and I have the file data.log, if I run the test again and use the file, in each run I have different results and the results seem quite random. ... Using [8.0, 90.0, 5.0, 114.0] => 0.5 from log-file Using [1.0, 144.0, 1.0, 121.0] => 0.0 from log-file Using [9.0, ...
by pedrox
Sun Sep 01, 2019 4:26 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Dedicated Chess Machine Elo vs Human Elo, a least squares analysis
Replies: 11
Views: 2116

Re: Dedicated Chess Machine Elo vs Human Elo, a least squares analysis

There is a thread in which Larry Kaufman indicates that he estimated that it could be passed from Elo CCRL to Elo FIDE with: Elo FIDE = 0.75 x Elo CCRL + constant. Kai seems to have done a study and gave the formula: Elo FIDE = 0.7 x Elo CCRL + 840 I guess the Kai formula is for CCRL 40/40 and I don...
by pedrox
Sun Sep 01, 2019 5:07 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Dedicated Chess Machine Elo vs Human Elo, a least squares analysis
Replies: 11
Views: 2116

Re: Dedicated Chess Machine Elo vs Human Elo, a least squares analysis

I suggest that you face engines of approximately 1600 Elo CCRL points and see if you can win them by complying with time control. If the engine plays in 15 seconds and you respond in 2 minutes, you are using 8 times more time, this could mean by your rule of 75 points; 75 + 75 + 75 = 225 points mor...
by pedrox
Sun Sep 01, 2019 4:31 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Dedicated Chess Machine Elo vs Human Elo, a least squares analysis
Replies: 11
Views: 2116

Re: Dedicated Chess Machine Elo vs Human Elo, a least squares analysis

Uri, The article tries to establish a relationship between the Aktiv list of dedicated chess machines and the FIDE list. The fact that the Elo FIDE starts at 1000 points or the Elo USCF at 100 is not something critical for what the article tries to explain. The article is not recent, maybe 4 years o...
by pedrox
Fri Aug 30, 2019 6:21 pm
Forum: Computer Chess Club: General Topics
Topic: Scorpio 3.0
Replies: 60
Views: 10941

Re: Scorpio 3.0

Well, that's a surprise for sure. Nice of Daniel to add that UCI support. I have gone into the dark side Tony :) There was no adapter for linux and windows wb2uci seem to cause time failures .. Anyway I must say though UCI is a real pain so I don't know why so many are fixated on it. For one, I sti...
by pedrox
Fri Aug 30, 2019 1:57 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: New Tool for Tuning with Skopt
Replies: 60
Views: 8582

Re: New Tool for Tuning with Skopt

jorose wrote:
Fri Aug 30, 2019 5:08 am
Just wanted to mention I was successfully able to retune Winter's futility and static null move pruning margins with this tool. I measured a self play rating gain of +9 +- 3 Elo roughly.
Can you indicate what parameters you used when calling tune.py?

I was also tuning those 2 parameters