Makruk (thai หมากรุก) (or Thai Chess. Expressed "Makruk", with a low-"shaking" tone while saying "Mak" and a high-level tone when saying "ruk") is a board game descended from the 6th century Indian game of chaturanga or a close relative thereof, and therefore related to Western chess. It is regarded as the most similar living game to this common ancestor of all chess variants.