TalkChess.com :: View topic - hashing, check extensions and depth

TalkChess.com
Hosted by Your Move Chess & Games

FAQ

Memberlist

Usergroups

Profile

hashing, check extensions and depth

TalkChess.com Forum Index -> Computer Chess Club: Programming and Technical Discussions

View previous topic :: View next topic

Author

Message

Onno Garms

Joined: 12 Mar 2007
Posts: 224
Location: Bonn, Germany

Post subject: Re: hashing, check extensions and depth Posted: Mon May 28, 2007 8:10 am

adams161 wrote:

Some lines would get searched deeper than others if there was check extensions activated. I'm thinking it shouldnt matter to much but wanted to get others opinions.

I think this is hard to avoid and in deed should not matter too much. If you turn extensions on at say ply 9, then the same position at ply 1, 3, 5, 7, 9 all will have different results. Storing the extension information in the hash table might still be possible in this case, but when you add other search heuristics later, you will have to extend the hash table. For some heuristics, e.g. history pruning, it is not possible to store the information in the hash table.

Display posts from previous:

Subject	Author	Date/Time
hashing, check extensions and depth	Mike Adams	Sun May 27, 2007 8:32 pm
Re: hashing, check extensions and depth	H.G.Muller	Mon May 28, 2007 7:23 am
Re: hashing, check extensions and depth	Onno Garms	Mon May 28, 2007 8:10 am
Re: hashing, check extensions and depth	Chan Rasjid	Mon May 28, 2007 8:53 am

TalkChess.com Forum Index -> Computer Chess Club: Programming and Technical Discussions

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum