This is a visual exercise on the complex numbers: any non-zero complex
number has exactly n complex roots of degree n, for n>1.

You are shown the plane
of complex numbers, together with a point in this plane representing a
complex number z.
And you have only to click (shoot) on the complex plane, at the points
representing the (square, cubic, quartic, or quintic) roots of z.
You will have a score computed in function of the average
precision of your shots.