What are examples of Go played on non-flat surfaces, like on a sphere?

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2024-04-23 13:30:35

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I know there was some thought put into how Go looks or feels like if it's not plaey on a flat, rectangular surface, but the surface of a 3-d object like a sphere or a donut. I'm mostly interested in:

How is the grid mapped to the surface, so that every node has 4 neighbors (the number of neighbors is important for how hard it is to capture stones)?

What are variants that are actually taken seriously as a game and played, and not only seen as obscure applications of weird topologies?

Your other question suggests that you're envisaging playing go on the surface of an actual sphere/torus. In particular that question mentions that you want "all nodes more or less equidistant". Searching on the internet, I didn't find much evidence that this is how go is played on other topologies.