Another game with a killer move is T.Petrosian v B. Spassky World championship 1966 game 10.
What a move 30.Qh8+ a temporary queen sacrifice that leads to a won position.
This would be a great move to play in a normal tournament game,but in a World Championship game,wow.
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Petrosian is known for grinding an opponent down positionally,his games to some seem boring.
But on occasion he could when the position deemed it produce the Tal/Morphy type firework moves.(but alas not very often)