1911 Encyclopædia Britannica, Volume 12… (1911)
“ The original Japanese Go is played on a board divided into squares by 19 horizontal and 19 vertical lines, making 361 intersections, upon which the flat round men, 181 white and 181 black, are placed one by one as the game proceeds. The men are placed by the two players on any intersections (me) that may seem advantageous, the object being to surround with one’s men as many unoccupied intersections as possible, the player enclosing the greater number of vacant points being the winner. Completely surrounded men are captured and removed from the board. ”
