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Subject: Fritz 5's opening tree loses moves!!!

Author: Serge Desmarais

Date: 15:41:58 08/27/98


   In less than a week, after I bought Fritz 5, its opening tree first lost 1.d4
as a starting move!!! Not a minor move! All the black's replies to that move
were greyed out, but on White's second move, everything was there and okay.

   After I imported games with 1.d4 and created fictive 1 move games (one for
every black reply that was greyed out, everything was back, except that all the
statistics that were going with 1.d4 previously had disappeared, along with the
learning for that move! Though the total number of games for the entire tree was
unaffected. I reported that to ChessbaseUSA and they are shipping me a patch. I
also asked in rec.games.chess.computers if any other Fritz 5 user was having the
same problem with the tree and one user reported that after only a few days
after installation, the only 1st white move that was left in his tree was
1.c4!!! He also reported that the 5.03 patch will not fix that horrible problem!

   Now, yesterday, I started a game that fgoes like that (with Fritz playing
White) 1.e4 e5 2.Nf3 and after I played 2...Nc6, it started thinking... I
stopped everything and opened the tree : 2...Nc6 had disappeared from it!!!
Vanished!

   Now, it is discouraging to import selected games to add moves into an opening
book that continually loses moves... I wonder if it was a good idea to buy that
program? And interesting autolearning function  with games statistics, but
everything could disappear at anytime??? I also wonder if that is not the real
reason why Fritz NEEDS the special and secret auto232 autoplayer, which could be
tuned only to avoid move losts from the book while playing another strong
program? This is just a hypothesis, but what if, while playing say Rebel 9.0,
Fritz 5 is left with only 1.c4 to play against Rebel? No more 1.e4 or 1.d4 or
even 1.Nf3? And when Rebel plays one of these moves, Fritz has to start
calculating... to be back in book on the next move...

   So, has any Fritz 5 users in here had this problem or, better, found a way of
preventing it? If it could not be prevented, that could be a very good reason
from recommending the buying of Fritz 5...

Serge Desmarais



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