Search found 67 matches

by grant
Wed Nov 21, 2007 5:05 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Winboard level command
Replies: 2
Views: 1302

Re: Winboard level command

Hi Matthias As I see it, level 0 2:10 5 is incremental time control. 0 means play the whole game in this time control 2:10 means start the game with 2 minutes 10 seconds on the clock 5 means increase the time by 5 seconds after each players move http://www.tim-mann.org/xboard/engine-intf.html Grant
by grant
Mon Oct 15, 2007 2:56 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: What is the best known speed of move generation?
Replies: 109
Views: 47706

Re: What is the best known speed of move generation?

Hi Why spend time optimizing perft if you cannot use it in your program? Well, my perft runs at 18.2million nps, make/unmake all moves, no hashing, check testing every move, optimized to the best of my ability, and I thoughly enjoyed the experience which on it's own is a good enough reason for me. B...
by grant
Fri Aug 24, 2007 10:30 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Magic bitboards, Java
Replies: 61
Views: 29622

Re: Magic bitboards, Java

I wondered whether I should take up the search again for better magics with my primitive random number routine. I remember it took a lot of cpu time.

Grant
by grant
Fri Aug 24, 2007 9:15 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Magic bitboards, Java
Replies: 61
Views: 29622

Re: Magic bitboards, Java

Hi Gerd

Is your magic number generator able to find 11-bit magics for rooks in any of the corners?

Strange that Lasse Hansen does not comment on the development of his own system.

Grant
by grant
Fri Aug 17, 2007 1:53 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Opening / Middle game
Replies: 3
Views: 2062

Opening / Middle game

Hi all I'm trying to think of a way to determine when the opening finishes and the middle game begins. In the past I've merely set the middle game to start after a certain number of half moves have been played (e.g. 16), but this is too rigid and not satisfactory. In some games the king(s) never cas...
by grant
Fri Aug 10, 2007 9:47 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: What are good ranges for positional values of the pieces?
Replies: 13
Views: 6238

Re: What are good ranges for positional values of the pieces

Hi

If you use the Scid database program with about a million IM and GM games, you can determine where the pieces go (in general) through each stage of the game. The knight, for example, will head towards the centre and very rarely to the edge or corner.

Grant