- 4 x 4 x 8 Tridimensional Chess. Clever 3-D variant, closer to Raumschach, but according to Gilman, solves some of Raumschach's design flaws. Author: Jeremy Gabriel Good. Inventor: Alberto Monteiro and Silvio Levy.
- Quadruple Besiege Chess. Toroidal Variant with piece movements defined by stretches. Author: Jeremy Gabriel Good. Inventor: Charles Gilman.
Total items listed: 3