Snark is an early 1970s text-based computer game for BASIC designed by People's Computer Company in which one must "net" the "snark," a point on a 10x10 Cartesian coordinate system. The game asks for the x and y coordinates and radius of your "net", a circle that would be plotted on the grid (if the grid were to appear in the game!). The computer tells you if the snark is in, on (along the circumference), or outside of the "net," and the object is to capture the snark by finding its exact coordinates with a net of 0 radius.