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Subject: futility pruning?

Author: Daniel Shawul

Date: 21:36:30 11/08/03

   I am confused about futility pruning at frontier nodes(depth==1).
well,the theory says if
  mat(node at depth==1) + mat(gain of move) + maximum positional score < alpha
   prune all non-checking moves.Ok! Well what I don't understand here is
if we don't use the pruning technique here the stand pat cut off will do it
at the quiescence node.So what we saved here is just making the move,right?
E.Heinz says FP At frontier shrinks the tree by 60%.Please help me out here.

regards
Daniel

Re: futility pruning? Christophe Theron 23:13:47 11/08/03
- Re: futility pruning? Bas Hamstra 16:09:06 11/09/03
- Re: futility pruning? Daniel Shawul 23:39:40 11/08/03
  - Re: futility pruning? -- Too many nodes Charles Roberson 09:14:17 11/10/03
  - Re: futility pruning? Christophe Theron 00:20:34 11/09/03
    - Re: futility pruning? Daniel Shawul 00:53:24 11/09/03
      - Re: futility pruning? Bas Hamstra 16:12:38 11/09/03
      - Re: futility pruning? Matthias Gemuh 01:55:40 11/09/03
        
        Re: futility pruning? Georg v. Zimmermann 06:00:13 11/10/03
        
        Re: futility pruning? Jeremiah Penery 06:13:49 11/09/03
        
        Re: futility pruning? Uri Blass 06:26:23 11/09/03
        
        Re: futility pruning? scott farrell 04:40:38 11/09/03
        
        Re: futility pruning? Tony Werten 23:27:53 11/09/03
        
        Re: futility pruning? Uri Blass 01:30:16 11/10/03
        
        Re: futility pruning? Tony Werten 01:50:49 11/10/03
        
        Re: futility pruning? Christophe Theron 22:57:05 11/10/03
        
        Re: futility pruning? Uri Blass 02:10:43 11/10/03
        
        Re: futility pruning? Tony Werten 02:58:52 11/10/03
        
        Re: futility pruning? José Carlos 07:05:13 11/10/03
        
        Re: futility pruning? Uri Blass 03:09:48 11/10/03
        
        Re: futility pruning? Daniel Shawul 02:24:08 11/10/03
        
        Re: futility pruning? Koundinya Veluri 09:01:24 11/10/03
        
        Re: futility pruning? Tord Romstad 08:03:37 11/16/03
        
        Re: futility pruning? Anthony Cozzie 05:54:43 11/10/03
        
        Re: futility pruning? Uri Blass 07:15:02 11/10/03
        
        Re: futility pruning? Uri Blass 02:58:35 11/10/03
        
        Re: futility pruning? Uri Blass 03:01:09 11/10/03
        
        Re: futility pruning? Daniel Shawul 04:27:23 11/10/03
        
        Re: futility pruning? Daniel Shawul 04:48:22 11/09/03
        
        Re: futility pruning? scott farrell 04:58:25 11/09/03
        
        Re: futility pruning? scott farrell 06:04:20 11/09/03
        
        Re: futility pruning? scott farrell 05:50:00 11/09/03
        
        Re: futility pruning? Alessandro Damiani 03:46:31 11/09/03
        
        Re: futility pruning? Bo Persson 02:22:16 11/09/03
        
        Thanks Matthias Gemuh 03:11:38 11/09/03
        
        Thankx for understanding. Daniel Shawul 02:21:31 11/09/03

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