2 x 2 Zero sum game
Author: Don Bindner

Z = (1, 0)
vert = Line(Z, yAxis)
A0 = Point(yAxis)
A1 = Point(vert)
B0 = Point(yAxis)
B1 = Point(vert)
a = Segment(A0, A1)
b = Segment(B0, B1)
P = Intersect(a, b)
SegA = Function((y(A1) - y(A0)) x + y(A0), 0, 1)
SegB = Function((y(B1) - y(B0)) x + y(B0), 0, 1)
L = Function(If[SegA(x) < SegB(x), SegA(x), SegB(x)], 0, 1)
U = Function(SegA(x) + SegB(x) - L(x), 0, 1)