Keywords: Rules, Theory

In rules parlance, a region is a set of rook-wise connected intersections. Note that whether these intersections are black, white, or empty do not factor in the definition of region.

More formally, a go board of n lines by n lines can be seen as a two-dimensional n x n [ext] grid graph. Then a region is a [ext] connected [ext] subgraph of this grid graph.

Note that a chain is a kind of region.

Region also has a related usage as locale.

Region last edited by on August 7, 2019 - 14:35
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