Thanks for changing the links. Fair point about the Cannons, it's an absolute prevention rather than a mere deterrent. It occurs to me that you could also have a Spherical Shogi on the same board. The board could have a King on each pole with a wraparound form of this array in between:
I include the extra rank so that there would be four ranks of each camp plus four ranks in between, even if the actually numbers of cells - 28 per camp, 36 in between - would be different.
I include the extra rank so that there would be four ranks of each camp plus four ranks in between, even if the actually numbers of cells - 28 per camp, 36 in between - would be different.