Historical riddle: Petrosian vs Tal, Curacao 1962

Join in and have fun by analysing a historically important endgame: At the Candidates Tournament 1962 in Curacao Mikhail Tal lost a tricky rook endgame against the eventual tournament winner and World Champion to be Tigran Petrosian. But was the endgame really objectively lost or did Tal lose only after one or more mistakes? Karsten Müller asks for your help!

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