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Subject: Nullmove: when to avoid it?

Author: Leen Ammeraal

Date: 02:56:36 02/28/01

I am not sure about when to avoid nullmoves.
I omit it:
a. when in check
b. when there are less than 5 pieces (including pawns) on the board
c. when the last move was a nullmove
d. at the root node
Should I also omit it in some other cases,
for example, when any hashmove (even with a low draft) was found,
or when beta = alpha + 1?
Thanks in advance for any help.
Leen

Re: Nullmove: when to avoid it? Vincent Diepeveen 09:24:17 03/01/01
Re: Nullmove: when to avoid it? Miguel A. Ballicora 08:10:30 02/28/01
- Re: Nullmove: when to avoid it? Robert Hyatt 10:22:41 02/28/01
  - Re: Nullmove: when to avoid it? Miguel A. Ballicora 11:49:19 02/28/01
    - Re: Nullmove: when to avoid it? Robert Hyatt 13:52:05 02/28/01
      - Re: Nullmove: when to avoid it? Miguel A. Ballicora 22:35:53 02/28/01
        
        Re: Nullmove: when to avoid it? Miguel A. Ballicora 22:39:05 02/28/01
      - Re: Nullmove: when to avoid it? Ricardo Gibert 14:31:13 02/28/01
        
        Re: Nullmove: when to avoid it? Robert Hyatt 18:29:28 02/28/01
  - Re: Nullmove: when to avoid it? José Carlos 10:32:34 02/28/01
    - Re: Nullmove: when to avoid it? Robert Hyatt 13:55:52 02/28/01
      - Re: Nullmove: when to avoid it? José Carlos 16:03:46 02/28/01
    - Re: Nullmove: when to avoid it? Miguel A. Ballicora 11:52:59 02/28/01
Re: Nullmove: when to avoid it? Robert Hyatt 07:10:48 02/28/01
- Re: Nullmove: when to avoid it? Leen Ammeraal 08:24:27 02/28/01
  - Re: Nullmove: when to avoid it? Severi Salminen 03:44:58 03/01/01
    - Re: Nullmove: when to avoid it? J. Wesley Cleveland 10:01:52 03/02/01
      - Re: Nullmove: when to avoid it? Severi Salminen 13:56:11 03/02/01
        
        Re: Nullmove: when to avoid it? J. Wesley Cleveland 18:11:01 03/02/01
        
        Re: Nullmove: when to avoid it? Severi Salminen 01:23:51 03/03/01
  - Re: Nullmove: when to avoid it? Robert Hyatt 10:19:45 02/28/01
Re: Nullmove: when to avoid it? Dieter Buerssner 04:28:47 02/28/01
- Re: Nullmove: when to avoid it? Leen Ammeraal 09:36:52 02/28/01
  - Re: Nullmove: when to avoid it? Ernst A. Heinz 12:42:01 02/28/01
  - Re: Nullmove: when to avoid it? Robert Hyatt 10:24:19 02/28/01
Re: Nullmove: when to avoid it? Severi Salminen 03:05:38 02/28/01
- Re: Nullmove: when to avoid it? Vincent Diepeveen 09:26:46 03/01/01
  - Re: Nullmove: when to avoid it? Severi Salminen 09:58:47 03/01/01
    - Re: Nullmove: when to avoid it? Miguel A. Ballicora 14:24:53 03/01/01
      - Nullmove: when to avoid it? Why not when depth=1? Severi Salminen 10:56:21 03/02/01
        
        Re: Nullmove: when to avoid it? Why not when depth=1? Ernst A. Heinz 13:01:21 03/02/01
        
        Re: Nullmove: when to avoid it? Why not when depth=1? Robert Hyatt 19:06:14 03/02/01
        
        Re: Nullmove: when to avoid it? Why not when depth=1? Ernst A. Heinz 20:07:49 03/02/01
        
        Re: Nullmove: when to avoid it? Why not when depth=1? Peter McKenzie 19:34:53 03/03/01
        
        Re: Nullmove: when to avoid it? Why not when depth=1? Robert Hyatt 07:34:23 03/03/01
        
        Re: Nullmove: when to avoid it? Why not when depth=1? Severi Salminen 13:35:43 03/02/01
        
        Re: Nullmove: when to avoid it? Why not when depth=1? Ernst A. Heinz 16:23:41 03/02/01
- Re: Nullmove: when to avoid it? Ernst A. Heinz 12:55:02 02/28/01
- Re: Nullmove: when to avoid it? Leen Ammeraal 09:41:43 02/28/01
  - Re: Nullmove: when to avoid it? Severi Salminen 11:17:48 03/01/01

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