"This book is essential to understanding that relationship of friendship and confrontation which, like no other, shaped the history of chess in the first half of the twentieth century."
— Miguel A. Sánchez, author of José Raúl Capablanca. A Chess Biography
"The painstaking research behind the facts narrated in this book is also the work of an archaeologist, someone intent on unearthing the truth"
— Manuel Azuaga, journalist, writer, and chess researcher
"Rarely have I held in my hands such a good book, especially in its content, but also in its presentation, which is excellent as well. It has everything: wisdom, history, anecdotes, and chess, along with historical photos."
— Carlos Matamoros, Grandmaster and a legend of Latin chess
"The book comments on many games and analyzes the performances and chess personality of these two champions, but what interested me most are the behind-the-scenes stories and the episodes of their defining moments."
— Antonio Gude, chess author, journalist, and translator
“My overall conception of this book poses a challenge, as most books on chess history don't focus much on making the commentaries on the games instructive, while books on game collections don't delve too deeply into historical topics. I intended the book to be revealing and insightful for those interested in the historical aspect. On the other hand, I tried to ensure that chess enthusiasts find in the games material that provides them with knowledge and is useful for their progress.”