Infinite Chess

A variant form of chess played with the usual pieces on an infinity-symbol-shaped board. While the rules are nearly identical to those of standard chess, the differing topology changes the game substantially.

Original websites for it are no longer up, but the WayBack Machine has a cached version at https://web.archive.org/web/20141017211751/http://www.colebank.com:80/ichess/index.asp