Tigran Petrosian is a titan of chess history. All agree he was a genius of strategy, defence and sacrifice, but didn-t he take too many draws? Possibly so, but when Petrosian selected and annotated his best games, that flaw disappeared, leaving only brilliance and profound chess understanding. As Garry Kasparov said: -My games with the 9th World Champion broadened my understanding of chess. Had it not been for these two defeats, I would possibly not have reached the top in chess.-This book is an English translation of a Russian classic that is a favourite of many grandmasters, including Mihail Marin and Levon Aronian. A literal translation of the Russian title might be -The Strategy of Soundness- but Python Strategy is a better fit for Petrosian-s more ambitious games. As another World Champion, Max Euwe, once wrote: -Petrosian is not a tiger that pounces on its prey, but rather a python that smothers its victim.-