we make it difficult for Black to play for a flat equality. I have spent many years developing the Polar Bear System. I know it inside out. Indeed I have turned every stone in the system. Since there is no theory of importance, I had to work hard. I read everything about the Dutch defence and used the ideas with reversed colours. Therefore the theory in this book was mainly created through my games and analysis. I had to select the best ideas. Omitting lines in which I do not believe. Every game and every move have been checked by the chess programs Stockfish and Fritz 13. It will not be easy for the reader to find a tactical mistake in the text. The suggestions are for club players but also professionals can get inspiration. GM Henrik Danielsen www.polarbearsystem.com