- Alfonso X book. Website with pictures from historical book on games.
- Ancient Chess. Site dedicated to the history and evolution of Chess! Author: Rick Knowlton.
- EDILÁN. EDILÁN has available facsimiles of many of the books of King Alfonso X, including his book on chess and other games.
- A Guide to Variant Chess. Variant Chess Games.
- Historical Variants. Case Western Reserve University Medieval Society Games Page. Author: Jess Rudolph.
Total items listed: 5