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  Topic: What is causing this problem?
Robert Hyatt

Replies: 6
Views: 1066

PostForum: Computer Chess Club: Programming and Technical Discussions   Posted: Wed Aug 16, 2017 8:12 pm   Subject: Re: What is causing this problem?
If the second move changes, that means move ordering was broken below that node. Not that unusual. Only thing I would do is compare the two PVs to make sure something is not broken to make you expen ...
  Topic: Core behaviour
Robert Hyatt

Replies: 34
Views: 4563

PostForum: Computer Chess Club: Programming and Technical Discussions   Posted: Tue Jul 25, 2017 5:06 am   Subject: Re: Core behaviour
Nobody cares?

Or do I miss something?

Thanks for your investigations!
As I don't feel that I have a problem to solve, for the moment I keep doing like always, but this is noted for if something ...
  Topic: Komodo and WCCC
Robert Hyatt

Replies: 114
Views: 12858

PostForum: Computer Chess Club: General Topics   Posted: Wed Jul 12, 2017 6:41 pm   Subject: Re: Komodo and WCCC


Apparently reading comprehension has reached an all-time low. Stockfish CAN participate if the authors want. The only ICGA rule preventing them from participating is that the AUTHORS have to eit ...
  Topic: Komodo and WCCC
Robert Hyatt

Replies: 114
Views: 12858

PostForum: Computer Chess Club: General Topics   Posted: Wed Jul 12, 2017 4:28 am   Subject: Re: Komodo and WCCC
I agree Stockfish should be allowed to partecipate. The official Stockfish 8 could be 10 ELO stronger than Komodo. And the fact Marco started this winning project severals years ago makes me feel prou ...
  Topic: Core behaviour
Robert Hyatt

Replies: 34
Views: 4563

PostForum: Computer Chess Club: Programming and Technical Discussions   Posted: Sat Jul 08, 2017 4:13 am   Subject: Re: Core behaviour
I would NEVER consider testing under windows. I want a tightly controlled environment that will work consistently each and every time.

I understand your concerns, but believe me, you can test on W ...
  Topic: Core behaviour
Robert Hyatt

Replies: 34
Views: 4563

PostForum: Computer Chess Club: Programming and Technical Discussions   Posted: Fri Jul 07, 2017 4:37 pm   Subject: Re: Core behaviour
I was really thinking of testing done by OTHERS when I was writing that. In my case, with my own testing, I very carefully set up a testbed that introduced as little noise as possible.

But when ...
  Topic: Core behaviour
Robert Hyatt

Replies: 34
Views: 4563

PostForum: Computer Chess Club: Programming and Technical Discussions   Posted: Tue Jul 04, 2017 12:02 am   Subject: Re: Core behaviour
My take here is that there is little use in worrying about something you can't fix. A process can always spawn 99 cpu burners that are quiet when the engine is searching, burning cycles when the oppo ...
  Topic: Core behaviour
Robert Hyatt

Replies: 34
Views: 4563

PostForum: Computer Chess Club: Programming and Technical Discussions   Posted: Sun Jul 02, 2017 3:37 am   Subject: Re: Core behaviour
UPDATE

I have been fiddling with affinity. I have a match running against a 50 elo stronger engine and yet I get a 62.5% score representing and increase of 140 elo (50+90).

Nice cheat!

I supp ...
  Topic: multiple iterations giving same first move of PV
Robert Hyatt

Replies: 4
Views: 589

PostForum: Computer Chess Club: Programming and Technical Discussions   Posted: Sun Jul 02, 2017 3:32 am   Subject: Re: multiple iterations giving same first move of PV
I recall a time-savings technique (Hyatt/Crafty/Cray Blitz?) involving
terminating the search early due to a number of iterations of iterative
deepening giving the same first move (or something vagu ...
  Topic: Hash table
Robert Hyatt

Replies: 36
Views: 5138

PostForum: Computer Chess Club: Programming and Technical Discussions   Posted: Fri Jun 23, 2017 5:03 pm   Subject: Re: Hash table
For me, I first try to overwrite the entry with a matching signature, if such exists. Second I overwrite the entry with the shallowest depth where age is different from current age. Finally, I ove ...
 
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