Items Invented by Richard Stack
- Toystore Chess. A problem-like Chess variant on a 5x5 board with free placement. (5x5, Cells: 25) By Richard Stack.
- Toystore Chess. A problem-like Chess variant on a 5x5 board with free placement. Author: Ed Friedlander. Inventor: Richard Stack.
- Toystore Chess. A problem-like Chess variant on a 5x5 board with free placement. Author: Peter Aronson. Inventor: Richard Stack.