Information from the Chessbase website:
"On master level, the Chigorin Defence has been played relatively seldom, and probably that's one of the reasons why it has been analysed less intensively than other openings - good prerequisites for freethinkers and adventurers on the chess board!" (Breutigam) The Chigorin Defence resulting after the moves 1.d4 d5 2.c4 Nc6 has become popular again thanks to the young Russian Alexander Morozevich, who with this choice has been holding his own even against the players of the absolute world top. It was high time for a publication to make the subtleties of this opening understandable also to the non-grandmaster, and this gap in chess literature now has been filled by FIDE master Martin Breutigam. In a small but swell database with 100 entries - 7 texts and 93 sample games - the long time player in the German Bundesliga has compiled all his knowledge on the Chigorin Defence. Another database includes 54 training questions enabling the user to test his freshly acquired knowledge. Furthermore, the CD features a big database of more than 4.000 games as a reference database plus a big tree of all games.