Search found 488 matches

by AndrewGrant
Thu Oct 31, 2019 9:45 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: For those that like to toy with Ethereal...
Replies: 12
Views: 1992

Re: For those that like to toy with Ethereal...

No difference in my test, but I discovered that Arena was logging like mad (I had a 550 MB arena.debug file) so I think the result cannot be trusted. Program Elo + - Games Score Av.Op. Draws 1 Ethereal-stopr : 3333 11 11 1475 50.1 % 3333 58.6 % 2 Ethereal-ethpr : 3333 11 11 1475 49.9 % 3333 58.6 % ...
by AndrewGrant
Thu Oct 31, 2019 3:53 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: For those that like to toy with Ethereal...
Replies: 12
Views: 1992

Re: For those that like to toy with Ethereal...

MikeB wrote:
Thu Oct 31, 2019 1:13 am
Dann Corbit wrote:
Wed Oct 30, 2019 10:40 pm
In a test (every early) the Ethereal pruning is doing better than the Stockfish style.
Please define 'better' , can I assume you meant in position testing as opposed to head to head combat??
http://chess.grantnet.us/viewTest/3607/

Going to figure things out :)
by AndrewGrant
Wed Aug 07, 2019 10:34 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Texel tuning Zurichess quiet like generator
Replies: 32
Views: 5440

Re: Texel tuning Zurichess quiet like generator

I have the following : https://gist.github.com/AndyGrant/03ffb ... 5c742da6bb

Few options at the top of the file. Does however pull both quiet and noisy positions.
by AndrewGrant
Mon Jul 29, 2019 2:08 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: You gotta love Perft... just not too much!
Replies: 11
Views: 4212

Re: You gotta love Perft... just not too much!

if you like you can find a lot of perft position and result in Vajolet test directory: https://github.com/elcabesa/vajolet/blob/develop/tests/fischer.txt https://github.com/elcabesa/vajolet/blob/develop/tests/perft.txt each line of the file contains a position and the perft value from depth 1 to de...
by AndrewGrant
Sat Jul 20, 2019 3:23 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Feature score use in search
Replies: 5
Views: 969

Re: Feature score use in search

In Minic, I have a structure to hold eval score by feature (passed pawn, material, danger, ...) separately. In search some decision are taken using score margin, but it feels like some should be more affected by specific features. For example, 7th rank pawn push is often taken as a non pruning cond...
by AndrewGrant
Tue Jul 09, 2019 8:51 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: LMP
Replies: 8
Views: 1648

Re: LMP

Hi, What is LMP and how does it work/is it implemented? LMP, late move pruning not reduction. I see mentions of it here and there but it is not described on the wiki. For Ethereal ... // Step 12B. Late Move Pruning / Move Count Pruning. If we have // tried many quiets in this position already, and ...
by AndrewGrant
Thu Jul 04, 2019 7:31 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Ethereal 11.50 x64 @ CEGT 3'+1" pb=on and @ CEGT 40/4 + ...
Replies: 2
Views: 1206

Re: Ethereal 11.50 x64 @ CEGT 3'+1" pb=on and @ CEGT 40/4 + ...

Thanks for testing! I have the links bookmarked and I am checking constantly!
by AndrewGrant
Tue Jul 02, 2019 2:29 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: CCRL Chess Engine Match Standards. How obsolete are they?
Replies: 70
Views: 10407

Re: CCRL Chess Engine Match Standards. How obsolete are they?

mkchan wrote:
Tue Jul 02, 2019 12:17 pm
This thread is full of eristic intent and sophistry from the author. I vote we shut the thread down as non-productive.
+1
by AndrewGrant
Tue Jul 02, 2019 3:08 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: CCRL Chess Engine Match Standards. How obsolete are they?
Replies: 70
Views: 10407

Re: CCRL Chess Engine Match Standards. How obsolete are they?

Mike is this better than a CCRL Smart phone? My computer works just fine. What are you talking about.... http://talkchess.com/forum3/viewtopic.php?p=773654#p773654 Do yourself a favour and read through that. Its the story of how some people failed to listen about what pondering and hyperthreading c...
by AndrewGrant
Tue Jul 02, 2019 2:09 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: CCRL Chess Engine Match Standards. How obsolete are they?
Replies: 70
Views: 10407

Re: CCRL Chess Engine Match Standards. How obsolete are they?

Mike is this better than a CCRL Smart phone? My computer works just fine. What are you talking about.... http://talkchess.com/forum3/viewtopic.php?p=773654#p773654 Do yourself a favour and read through that. Its the story of how some people failed to listen about what pondering and hyperthreading c...