World Draughts Forum

It is currently Fri Sep 22, 2017 07:11

All times are UTC+01:00




Post new topic  Reply to topic  [ 63 posts ]  Go to page Previous 1 2 3 4 5
Author Message
PostPosted: Mon Jul 17, 2017 22:16 
Offline

Joined: Wed Apr 14, 2004 15:04
Posts: 1550
BertTuyt wrote:
Rein, as of today I see 8x8 BT database results between move 8 and 12, based upon a 1 core search, 15 seconds.
The plydepth I reach is 22-24 ply at that stage.
The DB is a 10P DB.

So calculating from move 1 that is 38 - 48 ply.
Assume that after every 4 moves (so 8 ply), 2 man disappear (due to capture).
So a 12P DB would give an advantage of about 8 ply, so than the search depth becomes 30-40 ply.
Knowing the hyper speed Joost Buijs realized, all does not seem impossible...

So I dont think I need to go to a 16P DB, but the proof of the pudding is in the eating.

Bert


How many pieces does the end of your PV have in those searches? And what percentage of nodes are from 8 vs 8 pieces? If the PV goes quickly to few pieces, then it might indeed be encuouraging!


Top
   
PostPosted: Tue Jul 18, 2017 19:18 
Offline

Joined: Wed Sep 01, 2004 18:42
Posts: 1293
Rein, I did not examine the PV, nor do i collect statistics for it.
I will be working on the program this weekend, and expect/hope to finalise the 12P DB.
So im also curious how search will behave...

Bert


Top
   
PostPosted: Tue Jul 18, 2017 21:15 
Offline

Joined: Thu Apr 26, 2007 17:51
Posts: 792
Location: FRANCE
Hi,

Damy is now aware of the breakckthrough draughts rules. I had to modify a lot of things: first of all I had to remove all the code dedicated to kings and secondly I had to remove all the code dedicated to the draw specificity of draughts, including of course the handling of loops. The code looks much simplier!
I will now build a basic eval function before working on a egdb.

_________________
Gérard


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 63 posts ]  Go to page Previous 1 2 3 4 5

All times are UTC+01:00


Who is online

Users browsing this forum: No registered users and 4 guests


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 post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Limited