The book contains biographies of Aljechin and Capablanca with about 80 annotated games they played both against each other and against other players. In The Duel, Alessandro Bossi and Claudio Brovelli go deep into the lives of these two legendary World Champions, who have left their mark in an unforgettable manner on their epoch. The choice to present in parallel the two biographies shows clearly and effectively similarities and differences, not only in the style of play, but also in the approaches to life of the two protagonists: Capablanca, friendly and charming in society, genial and nearly invincible on the chessboard, and Alekhine, who combined a wonderful talent with a capacity for work, a competitive attitude and an energy which was truly enviable. Further information about the book and a sample are available at thinkerspublishing.com. 6 pictures.