World Chess Champion Mikhail Botvinnik writes the story of the 1963 match in which he lost his title to fellow Russian Tigran Petrosian. Botvinnik, one of the greatest chess players of all time, analyses the games, reveals his match strategy and comments on the strategic choices of his opponent. Botvinnik's revealing essay: ?Why In lost the match? is counterbalanced by Petrosian's analysis of his win, which is also included in this important historical document. A fascinating and highly instructive report.