8/8 FREE, PROTECTED
Re:Attacking down the river.
All attacks result from moves, but not all moves result in attacks. For example, the Witch King may "attack" sideways, thus may move sideways if the move results in an attack.
The Good player is allowed to move sideways along the path of the river. If this move is into a space with an opponent's piece it results in an attack.
Movement of any kind is only restricted by opponent's pieces when explicitly stated in the rules (such as in cases of retreating or special movement for some Dark units.)