Popular and vibrant Enhanced defence of Steinitz is a solid black weapon in the Spanish Party. The specific nature of its systems will be of an interest to both fans of combinations and chess players who prefer complex and maneuverable combat. The book provides a summary analysis of the current state of the theory and practice of Enhanced Steinitz defence. The main moves are illustrated with games from Bulgarian and international tournaments. Despite its popular character, the book is also of interest to highly skilled chess players.