A dual effort between David Sklansky and Mason Malmuth, this book touches on various advanced poker subjects for the Hold'em player. In this, the 21st century edition, psychology, semi-bluffing, reading hands and other advanced parts of the game are discussed at length.

This book is not as easy to read as many others and the reader should have a good knowledge of at least basic of Hold'Em strategy. However, it has been wildly recognised as a valuable piece of literature to own, if you're serioius about improving your game.