Zones of Control, abbreviated as ZOC, is a game concept which prevents you moving freely in zones controlled (or partially controlled) by enemy forces. The general rule is that a land unit which is adjacent to an enemy occupied square cannot move directly to another square which is also adjacent to an enemy occupied square. Here an enemy occupied square means a land square with an enemy unit on it. Adjacency means any of the eight squares surrounding a unit. In the following special cases ZOC does not apply: