Chess Explained: The Queen’s Indian was released in 2006 and was written by Peter Wells.
Rather than focus on variation after variation in a database style or the old opening manual style of Modern Chess Openings, they have focused instead, on explaining in a great of detail, the ideas behind the opening and have done so in a manner that will appeal to the novice or intermediate player rather than an expert or a master. While other publishers have also done this, notably Everyman’s “Starting Out” series, the key difference for Gambit is the length to which their author, in this case Peter Wells, explains the kinds of middle games that each variation tends to create and the depth and clarity of the annotation of the explanatory game.
For most players of intermediate strength, the first goal out of the opening is to get a playable middle game. While it is fashionable and probably correct to decry the overemphasis on the opening that occasionally afflicts weaker players, the hard truth is that if you don’t have a solid opening your opponent may very well achieve an advantage that is insurmountable later in the game. The author strikes a nice balance here and while the Queen’s Indian is not appropriate for every “1. d4” based opening, it is a very popular defense if you play the Nimzo Indian as your main line and your opponent neglects to play 3.
Nc3! While you will still need another opening reference to navigate some of the specific variations you may face on the black side of the Queen’s Indian, this book will teach you a great deal about the opening and more importantly, a great deal about the game as well. I am looking forward to more volumes in this series and Gambit is to be commended for taking this approach. Over all, I am very pleased with both Gambit and Everyman for addressing the needs of this particular market. Highly recommended!!