Author: Uri Blass
Date: 19:14:43 11/14/05
Go up one level in this thread
On November 14, 2005 at 21:03:09, chandler yergin wrote: >On November 14, 2005 at 14:49:10, Günther Simon wrote: > >>On November 14, 2005 at 13:57:46, chandler yergin wrote: >> >>>On November 14, 2005 at 13:45:57, William Penn wrote: >>> >>>>I wonder if there's any way to see what it contains, such as by converting it to >>>>a format that a GUI can read? My very superficial look so far agrees that it's a >>>>good book, but I'd like to see and know all the details!? >>>>WP >>> The .ctg File can be copied to a .pgn File then sent as an E-Mail >>>Attachment. >> >>I wonder what you are talking about? >Quote above: >"My very superficial look so far agrees that it's a >good book, but I'd like to see and know all the details!?" > >He said he'd like to see it. I explained how he could, >if someone wanted to send it to him. > > >>The whole thread is about >>Fruits native own book, which is of course no *.ctg file. > >Oh.. and how are Opening Books filed? Certainly not .pgn >They are .ctg Fruit has its own format that is not .ctg or .pgn Fruit's own format is based on pgn but it is not pgn by itself and I think that you cannot translate it to pgn The book may include only positions and moves when position may be reached by different games so you cannot get the games from the book. In some cases book even does not include exact positions but only hash key of the positions and you cannot get position based on hash key but only hash key based on position. hash key is a 64 bit number that is used to save space because book with the full position may be larger. In theory it is possible that the program may think that it is in book when it is not in book because the hash key is the same as the hash key of a book position but practically the probability for it is so low that it may happen in less than 1 of million games so the programmers do not care about that problem. Uri
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