Which TOS episode is that gif of Spock turning around and raising eyebrow from?

Question

I'm looking for a Star Trek (the original series) clip where Spock slowly turns around and raises an eyebrow like in the below gif:

Or this one.

Could anyone help me find the episode of this or a comparable scene?

Answer 1

This is from TOS: Court Martial, timestamp 29:44.

Spock's actual line is

"chess?"