The long-awaited revision is updated to include the latest world champions. This major revision lowers the price under the 20 price point, and at the same time, concentrates on a much simpler presentation, more targeted to the average chess player. The book is divided into key opening groups where the readers learn the key points of the opening and how the world champions would play them. Reading as much like an encyclopedia of the must-know openings crucial to every chess players knowledge as a powerful tool showing the insights, concepts and secrets as used by the greatest players of all time, WCO covers an astounding 9.990 variations of crucial openings in full conceptual detail with many actual games from the champs themselves.