The Ragozin Complex covers lines of the Queens Gambit where Black plays Bb4. It is the first time when it is explained in a comprehensive book. Material is divided into 7 chapters by the Whites 5th move: 5.Qa4+, 5.Qc2, 5.Qb3, 5.a3, 5.e3, 5.Bg5, 5.exd5. Some players who had the variation in their repertoire are Alekhine and Capablanca, or from current players Aronian, Kramnik or Ivanchuk. This is not a repertoire book - the analysis can be used for both sides. The book contains both analysis and word explanations, with several indexes in the end. Further information about the book is available at newinchess.com