Graham Downes
An elegant antisymmetric solution showing, or suggesting, ten circles.
Duncan Jones
Eric Solomon
An (m-n) solution has m regions of one color and n of the other. This is the only (2-2) solution known. There is no (1-1) solution, but there may be a (1-2) solution.
Duncan Jones
This (7-7) is the most fragmented solution known.
Eric Solomon
The largest region of a single color.
John Taylor
