Items Invented by Dr. Francesco Piacenza
- Archchess. Large chess variant from 17th century Italy. (10x10, Cells: 100) Author: Hans L. Bodlaender. Inventor: Dr. Francesco Piacenza.
- Archchess. Late 17th chess variant from Italy on large board with pieces which include modern queen and squirrel. Author: Jeremy Gabriel Good. Inventor: Dr. Francesco Piacenza.
- Squirrel. Jumps two orthogonally, two diagonally, or like a knight. Author: Hans L. Bodlaender and Fergus Duniho. Inventor: Dr. Francesco Piacenza.