Go (game)
Two players, "Black" and "White", take turns placing a "stone" (game piece) of their own color on a vacant "point" (intersection) of the grid on a Go board. Black plays first. If there is a large difference in skill between the players, the weaker player typically uses Black and is allowed to place two or more stones on the board to compensate for the difference (see Go handicaps). The official grid comprises 19×19 lines, though the rules can be applied to any grid size. 13×13 and 9×9 boards are popular choices to teach beginners, or for playing quick games. Once placed, a stone may not be moved to a different point.
Go (game)
Go has also been featured in a number of television series. Starz's science fiction thriller "Counterpart", for instance, is rich in references (the opening itself featuring developments on a Go board), including applications of the game's metaphors, a book about life and death being displayed, and Go matches, accurately played, relevant to the plot. Another example is Syfy's "12 Monkeys": In the first season's episode "Atari", one of the characters explains the homonymous concept, using it as an analogy to the situation he was facing, and his son is briefly seen playing Go later on.