WARNING: We strongly recommend that you use either Google Chrome or the Firefox browser to download our database because Microsoft Edge tries to change the filename.
You only need to download one file, an encrypted ChessBase archive (CBZ file) of about 240 MB in size.
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The downloadable CBZ file is like an ordinary CBV archive except that it is password protected. It will not open without the password which we shall email to you after we receive PayPal's notification of your payment.
The password will normally be sent to you within an hour or two, unless we are asleep or out of the house, in which case there could be a delay of few hours.
You can either pay first or download first and pay afterwards. The downloaded file can be copied to where you need it will not open within ChessBase until you pay and receive the unlock code from us. The CBZ file contains all the separate files of the database and within a couple of minutes of entering the password you will have a functioning UltraCorr-2021 database.
Once expanded, the database will require a minimum of 839 MB on your hard drive. When you first do a search, ChessBase will probably ask to create a search booster file and other subsidiary files may be created too, so you need at least 1GB space to use the database properly.
Afterwards, should you wish, you will be able to convert it to PGN or other proprietary formats but we will not do this for you.
In Windows, right-click on the link below and select the destination folder for the database on your computer hard drive. It is advisable to create a new folder for it.
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Or first send your payment via PayPal.
Once you have downloaded the CBZ file, you should save it in a separate folder from the working folder. Large databases like this can easily get corrupted and you should make regular backups if you add your own games or edit the database.
We also recommend keeping a copy of the database on a backup resource, such as a USB, in case you have any problems later.
The version 2 uploaded today only differs very slightly from the original version but has a new password.
BACK to the UltraCorr2021 introduction page.