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Text from R C Bell’s: Board and Table Games from many civilisations published in the 1960’s.
In 1949 North Korea invaded South Korea across the Thirty-ninth parallel and the war that followed made this obscure country a household word throughout the western world. The Kingdom of Korea was founded in 1122 B.C. and before the Christian era the Koreans were highly civilised. One of their games, Nyout, is an example of a Cross and Circle game that has survived unchanged down countless centuries.
The Nyout board consists of twenty-nine marks or circles which are often drawn on a piece of paper. The circle in the centre and at the four quarters are larger than the others. The X mark at the top is CH’UT—Exit.
The pieces are called Mal or horses, and are usually made of wood, stone or paper and are moved according to the throws of four dice known as PAM-NYOUT. These are about 1 inch in length, white, and flat on one side, convex and blackened by charring on the other. They are usually made of the wood of a thick bushy tree like the prunus. Ebony makes an excellent substitute. To prevent cheating the dice are thrown through a ring of straw about 2 inches in diameter, which is fastened to the end of a stick a foot long which is stuck in the ground.
The game today is called Yutnori in Korea and usually played on a square design but R C Bell calls the game after the dice sticks. Which name is the correct one for the earlier version, I can not say.
Modern Nyout Boards aka Yutnori