torus go; toroidal go; t-go
A go variant played on a board where the edges connect like a torus, so there are no boundaries. Also called 一色碁.
See also: 一色碁
In torus go, the edges of the board are connected, so the strategy differs greatly from regular go.
From English 'torus' + 碁 (go). The name describes the toroidal board shape.