Author: Johan de Koning
Date: 14:46:00 03/27/04
Go up one level in this thread
On March 26, 2004 at 09:48:37, Tord Romstad wrote: >On March 26, 2004 at 07:28:53, Vasik Rajlich wrote: >>Anyway, can we make some conclusions about the King search? :-) > >I don't own the King (nor even a computer capable of running it), and I >am also not very good at figuring out how chess engines work by looking at >their search output. On the other hand, you seem to have some skill in >this area, and it would be fascinating to read your thoughts. > >Johan is of course also welcome to write about the King's search. :-) The funny thing is that over the years I find myself simplifying the search rather than making it smarter. Less tricks, smaller QS, less extensions. Currently it applies futility pruning only at draft 1. Static null estimation only at draft 1 and 2. Null moves R=2 at drafts <= 10 (depending on settings and game stage). Turning off the last 2 completely, it loses as I expected. Average 16 seconds x 1.333 GHz K7. Typical search depths 9,10 versus 10,11. After 9 openings it trails 4-14. At tournament conditions (e.g. 200 s x 2 GHz) I'd expect it to be humiliated pretty badly. ... Johan
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.