Author: Alex Boby
Date: 11:13:54 06/23/99
Go up one level in this thread
On June 23, 1999 at 13:47:06, Robert Hyatt wrote: >On June 23, 1999 at 09:35:09, William Bryant wrote: > >>As I understand the use of Singular extensions, >> when, after generating all the _legal_ moves, there is only one move to be >> made by the side on move, extend 1 ply. >> > > > >this isn't a singular extensions... this is a special case of singular >extensions in general, and is most frequently called the "one reply to check >extension." > >>Since you only extend a maximum of 1 ply at any node, if the King is in check, >> or any other extensions are also triggered you would be extending anyway >> and this only extends this branch of the tree when it is the only >> condition extending the search. > > >Depends. In Crafty, I extend 1 ply when I check the opponent. Then, if he has >only one legal move, he extends 3/4 ply for that reason... still keeping the >rule of "no more than one ply of extensions for every ply of search done." > What exactly is the meaning of extending by 3/4 of a ply? Isn't 'depth' an integer argument to the search? Alex Boby
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.