Geo Chess (1992)

"This is a circular 3 person variant of chess with all three players having starting pieces on the outside of the board as well as on a central inner circle. This 3-player chess variant is played on a board that is a torus. It has an interesting set-up in that each player's King starts in an "isolated" board square, which makes them both not immediately accessible nor able to escape quickly. It also has "walls" between various board areas that can't be crossed. "