Author: Dieter Buerssner
Date: 12:07:46 09/13/02
Go up one level in this thread
On September 12, 2002 at 18:30:07, martin fierz wrote: >On September 12, 2002 at 16:50:38, Dieter Buerssner wrote: > >>On September 12, 2002 at 16:10:38, martin fierz wrote: >> >>>bestvalue = -mate; >>>for all moves do >>> { >>> value = -search(-beta,-alpha,etc); >>> bestvalue = max(value, bestvalue); >> alpha = max(value, alpha); >>> if(value>beta) Oops. As Uli pointed out, this should of course be >=. But we can blame Robert Hyatt for this one :-) I just copy pasted from his post, and you probably did the same. >>> break; >>> } >>>return bestvalue; >>> >>>is there anything wrong with this? >> >>Pehaps you left it out on purpose - but this code snipped is missing an update >>of alpha. For example at the place, I suggested above. > >hi dieter, > >you are right, i left it out, half on purpose i guess. it just seemed irrelevant >to the return value. but it's in my code - although it's really unnecessary: in >MTD you always fail, so you never have to update alpha. Another oops. I totally forgot the context of the post (which is quite clearly shown in the title). I of course totally agree with you. Cheers, Dieter
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.