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Subject: Junior 4.6 and the null move technique

Author: Sylvain Renard

Date: 12:34:19 03/14/98

  During the World Micro Computer Chess Championship in Paris,
Amir Ban told us that his program didn't use the null move technique.
So I was rather surprised that Junior 4.6 could not find the winning
move in this position: White Kh3, Ne7, pawns g3,h4; Black Kf3,
Ne5, pawns g6,h5; black to move. 1...Ng4!
  This test was first used for computers in 1982 (!) by M. Pierre Nolot
(Europe Echecs n°286 Octobre 1982).
  Fritz 2, 3 and 4 are also unable to find the solution because there
are using the null move technique and there is a zugzwang in the main
line.
But Frans Morsch worked well and Fritz 5 now plays the good move.
  Can Amir Ban explain to  us what is going wrong with Junior and this
test? Thank you!

Re: Junior 4.6 and the null move technique Bernhard Bauer 04:44:31 03/17/98
- Re: Junior 4.6 and the null move technique Robert Hyatt 05:29:42 03/17/98
  - Re: Junior 4.6 and the null move technique Christophe Theron 08:34:36 03/17/98
    - Re: Junior 4.6 and the null move technique Robert Hyatt 13:51:03 03/17/98
      - Re: Junior 4.6 and the null move technique David Blackman 18:42:52 03/17/98
        
        Re: Junior 4.6 and the null move technique Ernst A. Heinz 03:31:37 03/18/98
        
        Re: Junior 4.6 and the null move technique Christophe Theron 12:12:07 03/18/98
        
        Re: Junior 4.6 and the null move technique Ernst A. Heinz 01:25:22 03/19/98
        
        Re: Junior 4.6 and the null move technique Christophe Theron 08:11:25 03/19/98
        
        Re: Junior 4.6 and the null move technique Ernst A. Heinz 08:45:39 03/19/98
        
        Re: Junior 4.6 and the null move technique Christophe Theron 13:06:11 03/19/98
        
        Re: Junior 4.6 and the null move technique Ernst A. Heinz 13:52:02 03/19/98
        
        Re: Junior 4.6 and the null move technique Robert Hyatt 20:51:44 03/19/98
        
        A call for all crafties.. Jan-Frode Myklebust 14:54:29 03/20/98
        
        Re: Junior 4.6 and the null move technique Ernst A. Heinz 01:52:21 03/20/98
        
        Re: Junior 4.6 and the null move technique Robert Hyatt 13:25:21 03/19/98
        
        Re: Junior 4.6 and the null move technique Robert Hyatt 19:25:24 03/18/98
        
        Re: Junior 4.6 and the null move technique Christophe Theron 23:24:55 03/18/98
        
        Re: Junior 4.6 and the null move technique Robert Hyatt 06:16:29 03/19/98
        
        Re: Junior 4.6 and the null move technique Roland Pfister 03:23:45 03/19/98
        
        Re: Junior 4.6 and the null move technique Robert Hyatt 06:18:26 03/19/98
        
        Re: Junior 4.6 and the null move technique Carsten Kossendey 04:34:02 03/19/98
        
        Re: Junior 4.6 and the null move technique Christophe Jolly 16:14:14 03/18/98
Re: Junior 4.6 and the null move technique Amir Ban 14:10:10 03/14/98
- Re: Junior 4.6 and the null move technique Sylvain Renard 15:14:41 03/14/98
  - Re: Junior 4.6 and the null move technique Sylvain Renard 15:27:39 03/14/98

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