Manual de Fritz 15 2015 | Page 111

Reference 111 2. It is more sensible to limit 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 – absolute or ECO-relative – 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 importing games is ECO-relative 20. You can also include variations (i.e., analysis that might be included in the games), but these are not included in the statistical analysis. 3.3.11 Import analysis into openings book Ana ly s is O pe nings bo o k Add prio rity a na ly s is Imports the variations of a specified database and marks the moves as preferred tournament moves. In effect, the program is learning from the analysis of the grandmasters. The analysis is incorporated as (green) tournament moves. In the dialog box that appears you can specify how the individual lines will be treated: Repertoire White: Every white move becomes a tournament move, black moves are ignored. Repertoire Black: Every black move becomes a tournament move, white moves are ignored. Moves that are annotated with a que st ion m a rk are not played in tournament mode, and appear red in the book window. ! = Only move: This option makes moves that are annotated with an exclamation mark the only moves that will be played. They appear green in the book window, while all alternatives become red (i.e., they won't be played in serious tournament games). © ChessBase 2015