Do I need to go through?

Kunituna

Isn't the search rate 100% without passing through this dotted line?
Do I have to go through?

Kill_Grey

No, as long as the tile has been covered, its considered explored. The dotted line is just there for aesthetics.

xNig

Exploration only considers nodes.

That line there just gives you a choice on which side to go to.

Kunituna

Thank you for your reply!

understood!