Olympic sport that requires the highest intellect?

in Sports Talk
Distance running. particularly the Marathon.
Speed is important, but strategy equally so.
Tough to compete for over two hours without any rest. And Summer weather is less than ideal.
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Rodgers was 40th in Montreal 1976, but probably favored in 1980, but got boycotted out.
Wrestling. Obviously.
Llamas and alpacas are camels. They aren't like camels, or related. They are camels. When was anyone going to tell me this?! How long had Bill Nye been holding out on us?
I am not too knowledgeable about this sport from the winter Olympics, but curling seems to require some gray matter strategy.