Items Invented by John Leslie
- Hostage Chess. Pieces taken are held hostage and can be exchanged against other pieces and then dropped. (8x8, Cells: 64) (Recognized!) By John Leslie.
- Hostage Chess. Pieces taken are held hostage and can be exchanged against other pieces and then dropped. Author: Ed Friedlander. Inventor: John Leslie.
- Hostage Chess: Tactical Hints. Missing description By John Leslie.
- Hostage Chess. Play this Chessgi-like game in which no pieces change sides. (Recognized!) Author: Fergus Duniho. Inventor: John Leslie.
- Hostage Chess: Sample games. Missing description By John Leslie.
- Hostage Chess . Pieces taken are held hostage and can be exchanged against other pieces and then dropped. Author: Fergus Duniho. Inventor: John Leslie.