Black and white pieces called stones are placed one at a time on the grid's intersectio .
Black and white pieces called stones are placed one at a time on the grid's intersectio .
黑色或白色的棋子每次只能下一颗于格子交叉处。
Black and white pieces called stones are placed one at a time on the grid's intersectio .
黑色或白色的棋子每次只能下一颗于格子交叉处。