Author: Marc van Hal
Date: 14:26:31 11/08/02
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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. 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. In fact I today came to the idea guesing you where on a holiday on the Bahama's or Hawai. he he 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 (If it would not cost it to much money ofcourse) Because this way of teaching chess might be the way of the future. I am a chess teacher now and some of my coleges where asking for such an aproge also in the way you used the pointers for the pieces showing variations etc. so a job well done! The only bad part is Josh talks to fast Ok this is the way he usealy talks and I understand it. But for people not knowing the language too well it becomes dificult. Regards Marc
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