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TWIC files are downloadable as TwicXXXc.zip files (CBF/CBI zipped format) from http://...
Using ChessVU you can access those files without unzipping them. You can store them in a directory (e.g. \2003 for all 2003 files) and keep them like they are. ChessVU unzips and opens the selected CBF/CBI files, whenever needed. This new feature saves disk space and makes the TWIC archive on your PC much cleaner.
Even though you can search the files in their original format, and produce all the export files you need, you may want to prepare some intermediate summary file. There are several reasons to do this:
- ChessVU offers a nice List Window, with column sorting capability; with a single file you can have all the games easily sorted by player, ELO, opening, source etc.
- doubles: the same game may appear in different TwicXXXc.zip files, because of progressive editions, or other needs; with a single file you can easily detect and filter out doubles
- tournaments: they are often split in 2 files. ChessVU offers a nice function to show the Tournament Cross Table, that requires the games to be in the same file, sorted by source.
ChessVU allows fast merging of TwicXXXc.zip files into a single file (e.g. twic2003.cbf), by a new function (Merge databases), and then marking for deletion all the doubles. If you try these functions with 2003 TWIC files, you get a single file of 78000 games, that reduces to around 75000 after doubles deletion.
From your stored intermediate file (e.g. twic2003.cbf) you can now condense any kind of game subsets, perhaps filtering out zero length games (archived only for tournament tables completeness), blitz, simul, random etc., and/or searching specific game profiles with the Search Header function. You can do this by marking games (Mark blitz, rapid, blindfold etc.) and/or by Search Header function (that now also allows to consider marked/unmarked games). Search Header function also works on the original zipped files set (by input of "$.zip" string).
