‪ #DontSpoilTheEndgame‬, Petrosian vs. Korchnoi (Moscow, 1963)

This position is from Petrosian vs. Korchnoi, Moscow 1963. Viktor Korchnoi (Black) has just played 34… Rf8.

Now Tigran Petrosian has serious winning chances and plays 35. Rxh6. Was this a good move?