- Exploring Jetan. Analysis and extended rules for Edgar Rice Burroughs' "Martian chess" jetan. By Fredrik Ekman.
- Green Chess. More than 100 chess variants playable online. By János M. Uray.
- A Guide to Variant Chess. Variant Chess Games.
- The Symmetrical Chess Collection . Web site containing a collection of Chess Variants based on perfect symmetry. By Derek Nalls.
Total items listed: 4