Toward Spatial Reasoning about "Natural" Objects

Until now, most of works about Spatial Reasoning focused on artificial objects. This paper addresses Spatial Reasoning in the game of Go that is a domain where the objects look like "natural". Two criterias toward a definition of "natural" objects is proposed : fractal structure of objects and dependency between genesis and use of objects. Combinatorial complexity of the game of Go obliges the Computer Go community to study spatial representations of human players that are complex. These representations contain the concepts of grouping and fractioning. Spatial Reasoning in Go is qualitative. It creates objects and relationships between them. Our work is linked with mereotopology and Geographical Information Systems. We assume that studies about Spatial Reasoning in Go is a path toward a general theory of Spatial Reasoning about natural objects.