This is the 2058th most frequent Korean word.
수를
"수를" means "a way, means, or method" or "number" depending on context.
Here, '수를' is used to refer to a move or method.
그는 최후의 수를 사용했습니다.
He used his final move.
In this sentence, '수를' refers to a way or means to achieve something.
제가 할 수를 찾았어요.
I found a way to do it.
'수를' in this context relates to any means or methods one might employ.