Petrosian's Exchange Sacrifice

In The Exchange Sacrifice, I quoted Petrosian on the psychological difficulty of sacrificing a Rook for a minor piece. The source of that quote, a chapter titled 'The Positional Exchange Sacrifice' in Petrosian's Legacy, offers seven examples illustrating the theme from Petrosian's own games:-

1953 Switzerland, Reshevsky - Petrosian
1962 Varna, Petrosian - Gligoric
1972 San Antonio, Portisch - Petrosian
1958 Riga, Tal - Petrosian
1946 Leningrad, Dunaev - Petrosian
1953 Bucharest, Troianescu - Petrosian
1971 Moscow, Parma - Petrosian

Kasparov used several of the same key positions in the Petrosian chapter of Predecessors III. These games will be the basis for my next analytical series.