Items Invented by Peter Michaelsen
- Cannon Shogi and Cannon Chess. Played on a 9x9 Shogi board, feature various types of 'Cannon' pieces. (9x9, Cells: 81) By Peter Michaelsen.
- Cannon Chess . Played on a 9x9 Shogi board, feature various types of 'Cannon' pieces. Inventor: Peter Michaelsen.
- Cannon Shogi . Played on a 9x9 Shogi board, feature various types of 'Cannon' pieces. Inventor: Peter Michaelsen.