The Cambridge Springs is a popular defense to the Queen's Gambit that takes its name from the famous tournament in 1904 during which it was tested in a number of games. Since then it has become firmly established as a club-player's favorite, since Black sets a number of traps and can generate a very quick initiative if White fails to respond precisely. Several world champions have used the Cambridge Springs, most notably Alekhine and Smyslov, while Kasparov has played it on occasion, including a sensationally quick victory over Karpov in 1985. It currently has a good theoretical reputation and is frequently played at grandmaster level. This is the first major work on the Cambridge Springs. The authors combine thorough research with a wealth of original material to offer comprehensive coverage of this combative system. While the main body of the book covers both sides of the Cambridge Springs, it also offers Black a repertoire against White's alternative options in the Queen's Gambit, the most important of which is the Exchange Variation. Krzysztof Panczyk is an international master from Poland, who was placed third in the 1991 Polish Championship. Jacek Ilczuk is a strong correspondence player (a semi-finalist in the e-mail world championship) and has worked as a journalist and editor on a computer magazine.