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.
Khanhoo Khanhoo or Kanhu is a non-partnership Chinese card game of the draw-and-discard structure. It was first recorded during the late Ming dynasty as a multi-trick taking game, a type of game that may be as old as "T'ienkiu" ("Heaven and Nines"), revised in its rules and published in an authorized edition by Emperor Kao Tsung in 1130 AD for the information of his subjects. Meaning "watch the pot", it is very possibly the ancestor of all rummy games.