The GM that Owned Bobby Fischer♟️Staggering Losses in His Favorite Opening

How do you beat World Champion Bobby Fischer?
Soviet Grandmaster Efim Geller finished with a lifetime record of 5 wins and 3 losses to Bobby Fischer with a few draws. The only other player was Tal to have a winning against record against Bobby, he had 4 wins and 2 losses.
What was it about Geller that gave Bobby so much trouble? His deep Opening preparation? His willingness to challenge Bobby in tactical positions? Or was it his Endgame expertise? All of these are display in our 5 games.
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