Which game is a chess variant, Ubongo or Ouk-Khmer?
Ouk-Khmer (Hill's version) Ouk-Khmer (also known as Cambodian Chess) is a chess variant which D. B. Pritchard claimed was played in Cambodia although its actual origins appear to be unknown. Pritchard gives the source as P. A. Hill. It combines elements of makruk and xiangqi. Similar to xiangqi, it is played on the intersections of an 8×8 monotone board (Instead of 8x9). Contrary to Pritchard's claim, the actual variety of chess played in Cambodia today, known as "Ok" or "Ouk Chatrang" is nearly identical to Makruk. The authenticity of the game described by Pritchard remains doubtful.
Game of the Seven Kingdoms Game of the Seven Kingdoms (Chinese: 七國象棋 , "qī-guó-xiàng-qí" ;) is a seven-player variant of the game xiangqi ("Chinese chess"). It is traditionally ascribed to Sima Guang, although he died well before the 13th century, to which this game is traditionally dated. There is skepticism regarding the game's 13th-century formulation.