The successful series "How does a chess professional analyse with ChessBase" with Regina Pokorna had shown the final episode on Sunday on the German ChessBase YouTube site. On the other hand, "How to prepare for a tournament like a professional chess player" with Lilit Mkrtchian has just started. In the first episode she shows us how she creates an opening repertoire, and has accumulated almost a terrabyte of opening data over the decades. Martin Fischer now shows us the version that ChessBase originally intended, so that amateur players also have an easier time starting their own repertoire.