The Barry Attack is a highly aggressive system that arises after 1 d4 Nf6 2 Nf3 g6 3 Nc3 d5 4 Bf4. Although the concept of the Barry Attack has been known for a century or so, the modern interpretation (as with a number of other dynamic white systems) has mainly been developed by English grandmasters over the past couple of decades.
This “modern interpretation” is often not very subtle. If Black provides a target by castling early on the kingside, White will often let rip with moves such as Qd2, Bh6, 0-0-0 and h4-h5, playing very directly for a quick checkmate. If this strikes you as too crude to have a chance against a sophisticated and competent defender, then a quick glance through this book will undoubtedly change your mind. You will witness countless games where very strong players are destroyed on the black side in less than 30 moves. Sometimes a lot less.