One natural way to generalize scoring in go is to assign different point values to different intersections. This can be done in lots of different ways, but I think a simple pattern is preferable, so that it’s easy to keep track of point values without some sort of special overlay.
My suggestion is to start with a value of 1 along the first line, and then increase by 1 point per line all the way into tengen. On a 9x9 board the point values would be distributed like so:
My working title for this variant is “Pyramid go”, since the point values could also be visualized like a square pyramid:
Area scoring is used (or should I say volume scoring? ): In the position below black has 16Ă—3 + 8Ă—4 + 5 = 85 points, while white has 32Ă—1 + 24Ă—2 = 80 points, so black is winning (assuming no komi).
If we were to change one of the 3-3 points from black to white, this would reverse the result (the new score would be black 82 to white 83).
Although I’ve used a 9x9 board to demonstrate the idea, I think bigger boards would be even more interesting. I expect a 19x19 game to start with fighting in the center, with tengen quite possibly being the optimal first move.
Pyramid go could be played like a normal game on OGS, except you will have to do the scoring manually or with some separate tool (maybe I’ll even try to figure out how to parse SGF files if I’m feeling adventurous ).
Anybody interested in trying it out? I’m open to any board size, time settings, etc.