This guide focuses on one of the main difficulties encountered by the aspiring bridge player: how to diagnose play problems. It guides the reader through various patterns of recognition, building up the ability to recognize common themes and declarer-play situations. As a next step, the author explains the techniques that are appropriate to solving each group of problems. The reader's new skills are then tested by a series of play quizzes. For each of them, the author provides the correct solution and several tips on the applicable do's and don'ts.