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Subject: Fail high reductions

Author: Russell Reagan

Date: 14:34:47 07/01/03

From "Fail High Reductions by Rainer Feldmann"

"...a fail high node is a node 'v' with a search window of [alpha,beta] at which
a static evaluation function 'c' produces a cutoff. The FHR-algorithm reduces
the search depths at these fail high nodes thus searching their subtrees with
less effort."

Their subtrees? I thought fail high nodes didn't have subtrees, and that you
return beta at a fail high node. I must be misunderstanding something. Could
someone give a simple explaination of how fail high reductions work?

Re: Fail high reductions Georg v. Zimmermann 04:22:00 07/02/03
- Re: Fail high reductions Gerd Isenberg 07:49:41 07/02/03
  - Re: Fail high reductions Omid David Tabibi 08:09:21 07/02/03
    - Re: Fail high reductions Gerd Isenberg 11:28:27 07/02/03
Re: Fail high reductions Steve Maughan 17:21:21 07/01/03
Re: Fail high reductions Martin Bauer 15:47:49 07/01/03
- Re: Fail high reductions Russell Reagan 16:28:07 07/01/03
Re: Fail high reductions Martin Bauer 15:10:46 07/01/03
- Re: Fail high reductions Gerd Isenberg 13:18:13 07/02/03
Re: Fail high reductions Uri Blass 15:10:04 07/01/03
- Re: Fail high reductions Ralph Stoesser 15:19:44 07/01/03
  - Re: Fail high reductions Omid David Tabibi 15:24:43 07/01/03
    - Re: Fail high reductions martin fierz 02:47:27 07/02/03
      - Re: Fail high reductions Tony Werten 04:30:32 07/02/03
    - Re: Fail high reductions Ralph Stoesser 16:34:28 07/01/03
    - Re: Fail high reductions Russell Reagan 15:28:25 07/01/03
      - Re: Fail high reductions Omid David Tabibi 15:35:55 07/01/03
        
        Re: Fail high reductions Russell Reagan 15:53:32 07/01/03
      - Re: Fail high reductions Uri Blass 15:34:40 07/01/03
        
        Re: Fail high reductions Russell Reagan 15:37:19 07/01/03
        
        Re: Fail high reductions Peter Fendrich 16:28:36 07/01/03

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