-20 moral "bonus" for inner prvince?

[igennem]

Hello Guys!


 How this inner prvince exactly works. The inner province must be sorrounded by 4 provinces directly or all of the sides (8) including the diagonals must be occupied by a province to get this -20 moral bonus against the attackiing army?


thx

[Madzoism]

The province has to be surrounded by 4 provinces on the sides