Database window: Edit – Properties – button "Training"
A database that only contains training material can be defined as a training database. In the properties select “Training” in the list of database types.
Clicking on the button Training displays the number of training lessons done and the points that were earned.
If you switch on the Random training box then you get a random lesson every time you double-click the database icon. ChessBase will actually remember which positions have already been presented and repeat them only after all the games have been loaded at least once. In this way you can spend several weeks working with a collection of tactical or training positions and then repeat the lessons with the positions in a different order (which amounts to a good memory test). Reset deletes all records and starts the database again.