You find your ball lying in the middle of the 12th green. You are playing the fourth hole.
Common sense says to not hack a big divot out of the green. But common sense isn’t always common:
Of course, it has long been a penalty to play a ball from the wrong green. But in 2019, that rule has been expanded further: you must take complete relief, stance included.
2019 USGA Rules Review: Ball on Wrong Green >
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