Manual de ChessBase 13 2014 | Page 200

200 ChessBase 13 2. It is usually much more sensible to limit the length of the variations relative to the ECO classification. This results in long variations for theoretical main lines (ECO classification position found late in the game) and short variations for side lines i.e. early deviations. Obviously, if you choose a shorter length the tree will be compact. But then you are liable to lose some valuable information. If you choose a very large value then the tree will be gigantic, and it will contain a lot of superfluous information. A good practical value for adding games to the tree is the default of ECO + 20. Variations You can also include variations, i.e. analysis that might be included in the games. But these are not included in the statistical analysis. 3.4.19 Manage Databases ChessBase stores games in databases The database window is your control center to access, copy, delete, edit, merge and backup databases. Open a database for browsing in a list window by double-clicking on its symbol in the database window. Copy games by Drag & Drop or by menu Edit – Copy and menu Edit – Paste. Edit type and title of a database by right-clicking on the symbol – Properties. Call advanced database management functions by right-clicking on the symbol – Tools. The most important tool is to backup a database i nto a single compressed file: Right -c lic k, T ools Ba c kup Da t a ba se . ChessBase 2014