A pursuer (P) pursues an evader (E), with each party choosing a speed
in ignorance of the other's choice. Going extremely fast is pot wise f
or either party because doing so would quickly exhaust available energ
y. The situation is modeled as a two-person zero-sum game. The game ma
y or may not have a saddle point, depending on the energy ratio and ta
ctical parameters. (C) 1994 John Wiley & Sons, Inc.