This book contains hundreds of examples of extremely difficult positional chess. It is one of the most important chess books. Nimzowitsch is difficult to comprehend, but his vision and his principles can take you to the promised land where you have a sense of really understanding chess. Absorb this book, and your chess will become more interesting and rational. You will have reasons for your moves. This book, and Nimzo's vision of chess, is mostly about pawn play in the final analysis. Pawns ARE the soul of chess, and I have never seen books that really get at the heart of pawn play like Nimzo's. This book contains heavily annoated games by this chess genius. Plus, there are many narrative discussions where he further elucidates the principles of pawn play in chess. Absolutely essential for any serious chess book collection.