- CHESS Eccentricities, By Major George Hope Verney. Images from the book (complete).
- Fortress chess. An old Russian variant for four players. (Cells: 192)
- A Guide to Variant Chess. Variant Chess Games.
- Russian fortress chess. An old Russian variant for four players. (Cells: 192)
- Russian Fortress Chess. Missing description
- Vierschach. 19th Century 4-player game where allies start off at right angles to each other. (14x14, Cells: 160)
Total items listed: 6