Search found 724 matches

by jwes
Tue Oct 31, 2017 12:02 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: EMR based on Null Move threat
Replies: 13
Views: 2527

Re: EMR based on Null Move threat

I think this subverts the entire idea of null move. The reason that you can reduce the null move compared to the normal search depth is based on the assumption that the normal search will start with some delaying tactic that postpones any threat 2 ply. What you are doing here is confirm that you in...
by jwes
Wed Oct 11, 2017 11:51 pm
Forum: Computer Chess Club: General Topics
Topic: Fire 6 is available!
Replies: 41
Views: 13142

Re: Fire 6 is available!

Sorry no Haswell compile... and it's Windows only. PLEASE Norman ! Can you make it XP compatible (or at least XP x64) Sorry about that Ernest, but Windows XP is 16 years old now...from 2001. Please understand just how much effort it would be for me to setup a box with XP on it, and try to find out ...
by jwes
Mon Sep 18, 2017 5:04 pm
Forum: Computer Chess Club: General Topics
Topic: syzygy question
Replies: 2
Views: 792

Re: syzygy question

Nordlandia wrote:You're probably looking for this site.

https://syzygy-tables.info/
More like https://gist.githubusercontent.com/nikl ... -stats.txt, but for regular chess.
by jwes
Mon Sep 18, 2017 12:45 am
Forum: Computer Chess Club: General Topics
Topic: syzygy question
Replies: 2
Views: 792

syzygy question

Are the syzygy tablebase stats available online (K*vK*.txt)?
by jwes
Sat Jul 29, 2017 9:43 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Ways to avoid "Draw Death" in Computer Chess
Replies: 121
Views: 13963

Re: Ways to avoid "Draw Death" in Computer Chess

- the real deal will be a worst-mover, that would pick only the very worst moves how stronger would be a random-mover next to the worst-mover? 'Worst move' is an ill-defined concept. It depends on your opponent. Normally putting a Queen on a square attacked by a Pawn would be one of the worst thing...
by jwes
Tue Jul 25, 2017 2:16 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Core behaviour
Replies: 34
Views: 7310

Re: Core behaviour

elpapa wrote:
bob wrote:Sorry, but not even close. And if you are talking windows 10, not at all.
What is it that makes Windows 10 worse than 7 or 8?
One problem is that it is difficult to stop Windows 10 from installing updates.
by jwes
Thu Jul 20, 2017 8:36 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Safe mobility?
Replies: 18
Views: 3327

Re: Safe mobility?

I was looking at changing my very crude mobility calculation to safe mobility, but it looks very expensive. To do it correctly would seem to require doing a SEE on every square that can be moved to. Do people have quicker ways of doing this or approximations that have most of the benefit of full sa...
by jwes
Tue Jul 18, 2017 5:50 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Safe mobility?
Replies: 18
Views: 3327

Safe mobility?

I was looking at changing my very crude mobility calculation to safe mobility, but it looks very expensive. To do it correctly would seem to require doing a SEE on every square that can be moved to. Do people have quicker ways of doing this or approximations that have most of the benefit of full saf...
by jwes
Tue Jul 18, 2017 4:16 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: PEXT Bitboards
Replies: 19
Views: 7146

Re: PEXT Bitboards

To make software PEXT useful for chess, it needs to be on par with magic multiplication. And I really don't think the above will be. So, the choice is still between hardware PEXT and Magic. Of course, the main reason for such a routine would be to make your program compatible with older processors....