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Subject: Re: To Marc Van Hal

Author: John Merlino

Date: 15:35:53 11/08/02

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On November 08, 2002 at 17:26:31, Marc van Hal wrote:

>On November 08, 2002 at 14:17:00, John Merlino wrote:
>
>>Marc,
>>
>>First of all, I'm sorry for not replying to your CCC post sooner. I was on a
>>badly needed vacation. Here is what you wrote:
>>----------------
>>I made a book of a pgn file of 20.000 games but I am manualy improving it. After
>>inserting some positions time the program crashes. Is there still a limit on the
>>maximal positions for the book? Or would it be so that the program has trouble
>>with swapping when using the book editor?
>>----------------
>>
>>I suspect that it might be the latter problem. How much RAM does your computer
>>have? 20,000 games means that, if you used the default settings for creating the
>>book, you probably have about 150-200K nodes, which is quite a bit for the tree
>>control to handle. You might consider closing some branches of the tree when you
>>are done with them, so the program does not have to display and visually keep
>>track of too many things at one time.
>>
>>In Windows, each node of this tree control requires its own individual handle in
>>memory. If there are many thousands of these, then RAM can get very fragmented,
>>causing much wasted space. Additionally, Windows may only allow a certain
>>maximum number of open handles at any one time, and trying to allocate more of
>>them might cause Windows to become unstable (or, as you discovered, crash).
>>
>>That's about the only suggestion that I have.
>>
>>jm
>
>I found out that the different numbers of games in the book is not the reason
>why the book crashes but more the lenght of the variations.
>Some times long variations are necasery to point out why a certain move is not
>good/or not.

Interesting. Does this crash occur often? Can you make it happen every time on a
particular move, even if you do not open any other lines?

>I also found the random number of the chessmaster book are not making the book
>better.
>meaning known bad moves will apear on the board.

Are you saying that if a move has a priority of zero, it can still be played by
a computer personality? I'm not sure what you mean by "random number of the
chessmaster book".

>By the way a new question I am prety sure if you besides the games of Josh
>Waitzikin in English you also could translate it in the languages of the
>country's where the product is being shipped

Only a "fully translated" version of Chessmaster will have the Josh feature in a
different language. It does cost quite a bit of money to translate Chessmaster,
even just the Josh feature, which contains over 19 hours of audio. The
soon-to-be-released French version will contain fully translated audio for the
games in the Kids Room, and the games in the Classroom will have subtitles only.

jm



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