To hide a room in a conceptual way, the project is inspired by a traditional board game call Go, the black and white pieces are placed on a 19x19 grid board, the side captures the more territory wins. In the process of game, the defi nition of territory is constantly changing, there are also moments of ambiguity where the territory belongs to both side. Thus The concept of hiding is thus not really to hide a room, but to create this experiential ambiguity of space. In this project the most obvious space is the conceptual hidden, it is where the overlapping of four rooms is. The maze like circulation makes people confuse about where he is, when constantly encountering this void in the middle, but unable to get to it unless the right path is taken. The process of walking through the building is a manifestation of how Go is played, from ambiguous territory to defi ned territory.