Items Invented by M. K. Morrison
- Big Battle. Commercial chess variant on 10 by 10 board. (10x10, Cells: 100) Author: David Milne. Inventor: M. K. Morrison.
- Big Battle. Large (10x10), commercial variant. By M. K. Morrison.
- Big Battle . Large (10x10), commercial variant. Author: David Milne. Inventor: M. K. Morrison.