Items Invented by John Zimmerman
- ZM Machiavellian Quadchess. Modernization of Chaturanga for four players. By John Zimmerman.
- Chaturanga for Four -- Machiavellian Version. Cutthroat new version. Author: Ed Friedlander. Inventor: John Zimmerman.
Check out Glinski's Hexagonal Chess, our featured variant for May, 2024.