Author: Komputer Korner
Date: 07:20:56 08/04/98
Go up one level in this thread
On August 04, 1998 at 00:45:41, blass uri wrote: > >On August 03, 1998 at 23:58:25, Ilya P. Kozachenko wrote: > >>On November 09, 1997 at 11:31:49, Alvaro Polo wrote: >> >>>I wonder if a chess program could be made which used two different >>>strategies in parallel (using two processors). >>> >>>On the one processor it would run a very knowledge based algorithm, >>>something like CSTal appears to be. >>> >>>On the other processor it would run a fast and deep searcher. The >>>tactical lines would be found by this second algorithm and forwarded to >>>the knowledge based one signaling them as lines to avoid. >> >>On November 09, 1997 at 14:38:40 Robert Hyatt wrote: >> >>>this has been done. See "Phoenix" by Jonathan Schaeffer. He used two >>>parallel search engines, one a full-blown search+eval, the second an >>>aggressive null-move search with material-only, which could search a >>>couple of plies deeper than the other. It worked, but only "so-so" >>>because >>>the fast search can find tactical things, but not positional things. So >>>it >>>could find a way to win a pawn, but wreck the position in the process. >>>Or >>>find a way to defend the pawn, but wreck the position. It was hard to >>>"coordinate" the two searches to decide which is correct... >> >>And what about next idea?: >> >>Since hard coordinating let's use 2 different algorithms not in >>parallel. >>Program could define whether position is "more tactical" or "more >>positional" and apply corresponding algorithm. >>We would obtain a program with 2 kinds of play available, which >>changes its style during the game (like DeepBlue :) and isn't worse >>than good "knowledge-based" or "speed-based" program alone. >>Any suggestions, please. >> >>WBW, Ilya. >I think giving fritz to play if it can come to big depth and giving Junior >to play in the other cases can create a better program than both of them. > >Uri This whole idea is aready being done with the Fritz 5 GUI. If you insert Fritz 5 as the tactical engine and Hiarcs 6 as the positional engine the program will decide which one to use in a given position in a game. I have seen it do this . It works. AS to how much better it plays, that is a BIG question. Probably Junior 4.6 can be tried this way but I haven't actually tried Junior doing this yet. Has anybody tried it with Junior and Fritz ? -- Komputer Korner
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